mirror of https://github.com/grpc/grpc.git
David Garcia Quintas
9 years ago
commit
f47240e253
152 changed files with 6819 additions and 10833 deletions
@ -0,0 +1,2 @@ |
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dns: scheme name resolution, using getaddrbyname |
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(or other OS specific implementation) |
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@ -0,0 +1 @@ |
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Support for resolving ipv4:, ipv6:, unix: schemes |
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@ -0,0 +1 @@ |
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Zookeeper based name resolver: WIP |
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@ -1,42 +0,0 @@ |
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/*
|
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
||||
* met: |
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* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H |
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#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H |
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|
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#include "src/core/lib/client_config/resolver_factory.h" |
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|
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/** Create a dns resolver factory */ |
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grpc_resolver_factory *grpc_dns_resolver_factory_create(void); |
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|
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#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_DNS_RESOLVER_H */ |
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@ -1,42 +0,0 @@ |
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/*
|
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#ifndef GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H |
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#define GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H |
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|
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#include "src/core/lib/client_config/resolver_factory.h" |
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|
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/** Create a zookeeper resolver factory */ |
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grpc_resolver_factory *grpc_zookeeper_resolver_factory_create(void); |
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|
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#endif /* GRPC_CORE_LIB_CLIENT_CONFIG_RESOLVERS_ZOOKEEPER_RESOLVER_H */ |
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@ -0,0 +1,165 @@ |
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/*
|
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* |
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* Copyright 2015-2016, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#include <grpc/support/port_platform.h> |
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#ifdef GPR_POSIX_SOCKET |
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#include "src/core/lib/iomgr/ev_posix.h" |
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#include <grpc/support/log.h> |
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#include "src/core/lib/iomgr/ev_poll_and_epoll_posix.h" |
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|
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static const grpc_event_engine_vtable *g_event_engine; |
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grpc_poll_function_type grpc_poll_function = poll; |
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grpc_wakeup_fd grpc_global_wakeup_fd; |
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void grpc_event_engine_init(void) { |
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if ((g_event_engine = grpc_init_poll_and_epoll_posix())) { |
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return; |
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} |
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gpr_log(GPR_ERROR, "No event engine could be initialized"); |
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abort(); |
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} |
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void grpc_event_engine_shutdown(void) { g_event_engine->shutdown_engine(); } |
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|
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grpc_fd *grpc_fd_create(int fd, const char *name) { |
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return g_event_engine->fd_create(fd, name); |
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} |
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|
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int grpc_fd_wrapped_fd(grpc_fd *fd) { |
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return g_event_engine->fd_wrapped_fd(fd); |
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} |
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|
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void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done, |
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int *release_fd, const char *reason) { |
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g_event_engine->fd_orphan(exec_ctx, fd, on_done, release_fd, reason); |
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} |
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|
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void grpc_fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { |
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g_event_engine->fd_shutdown(exec_ctx, fd); |
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} |
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|
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void grpc_fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
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grpc_closure *closure) { |
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g_event_engine->fd_notify_on_read(exec_ctx, fd, closure); |
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} |
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|
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void grpc_fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
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grpc_closure *closure) { |
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g_event_engine->fd_notify_on_write(exec_ctx, fd, closure); |
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} |
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size_t grpc_pollset_size(void) { return g_event_engine->pollset_size; } |
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void grpc_pollset_init(grpc_pollset *pollset, gpr_mu **mu) { |
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g_event_engine->pollset_init(pollset, mu); |
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} |
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|
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void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
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grpc_closure *closure) { |
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g_event_engine->pollset_shutdown(exec_ctx, pollset, closure); |
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} |
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|
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void grpc_pollset_reset(grpc_pollset *pollset) { |
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g_event_engine->pollset_reset(pollset); |
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} |
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|
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void grpc_pollset_destroy(grpc_pollset *pollset) { |
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g_event_engine->pollset_destroy(pollset); |
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} |
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|
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void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
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grpc_pollset_worker **worker, gpr_timespec now, |
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gpr_timespec deadline) { |
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g_event_engine->pollset_work(exec_ctx, pollset, worker, now, deadline); |
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} |
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|
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void grpc_pollset_kick(grpc_pollset *pollset, |
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grpc_pollset_worker *specific_worker) { |
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g_event_engine->pollset_kick(pollset, specific_worker); |
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} |
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|
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void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
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struct grpc_fd *fd) { |
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g_event_engine->pollset_add_fd(exec_ctx, pollset, fd); |
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} |
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grpc_pollset_set *grpc_pollset_set_create(void) { |
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return g_event_engine->pollset_set_create(); |
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} |
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|
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void grpc_pollset_set_destroy(grpc_pollset_set *pollset_set) { |
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g_event_engine->pollset_set_destroy(pollset_set); |
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} |
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|
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void grpc_pollset_set_add_pollset(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, |
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grpc_pollset *pollset) { |
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g_event_engine->pollset_set_add_pollset(exec_ctx, pollset_set, pollset); |
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} |
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|
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void grpc_pollset_set_del_pollset(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, |
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grpc_pollset *pollset) { |
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g_event_engine->pollset_set_del_pollset(exec_ctx, pollset_set, pollset); |
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} |
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|
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void grpc_pollset_set_add_pollset_set(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *bag, |
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grpc_pollset_set *item) { |
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g_event_engine->pollset_set_add_pollset_set(exec_ctx, bag, item); |
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} |
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|
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void grpc_pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *bag, |
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grpc_pollset_set *item) { |
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g_event_engine->pollset_set_del_pollset_set(exec_ctx, bag, item); |
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} |
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|
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void grpc_pollset_set_add_fd(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, grpc_fd *fd) { |
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g_event_engine->pollset_set_add_fd(exec_ctx, pollset_set, fd); |
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} |
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|
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void grpc_pollset_set_del_fd(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, grpc_fd *fd) { |
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g_event_engine->pollset_set_del_fd(exec_ctx, pollset_set, fd); |
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} |
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|
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void grpc_kick_poller(void) { g_event_engine->kick_poller(); } |
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#endif // GPR_POSIX_SOCKET
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@ -0,0 +1,158 @@ |
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/*
|
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* |
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* Copyright 2015-2016, Google Inc. |
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* All rights reserved. |
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* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#ifndef GRPC_CORE_LIB_IOMGR_EV_POSIX_H |
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#define GRPC_CORE_LIB_IOMGR_EV_POSIX_H |
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#include <poll.h> |
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|
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#include "src/core/lib/iomgr/exec_ctx.h" |
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#include "src/core/lib/iomgr/pollset.h" |
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#include "src/core/lib/iomgr/pollset_set.h" |
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#include "src/core/lib/iomgr/wakeup_fd_posix.h" |
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typedef struct grpc_fd grpc_fd; |
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typedef struct grpc_event_engine_vtable { |
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size_t pollset_size; |
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|
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grpc_fd *(*fd_create)(int fd, const char *name); |
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int (*fd_wrapped_fd)(grpc_fd *fd); |
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void (*fd_orphan)(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done, |
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int *release_fd, const char *reason); |
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void (*fd_shutdown)(grpc_exec_ctx *exec_ctx, grpc_fd *fd); |
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void (*fd_notify_on_read)(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
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grpc_closure *closure); |
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void (*fd_notify_on_write)(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
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grpc_closure *closure); |
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|
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void (*pollset_init)(grpc_pollset *pollset, gpr_mu **mu); |
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void (*pollset_shutdown)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
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grpc_closure *closure); |
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void (*pollset_reset)(grpc_pollset *pollset); |
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void (*pollset_destroy)(grpc_pollset *pollset); |
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void (*pollset_work)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
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grpc_pollset_worker **worker, gpr_timespec now, |
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gpr_timespec deadline); |
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void (*pollset_kick)(grpc_pollset *pollset, |
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grpc_pollset_worker *specific_worker); |
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void (*pollset_add_fd)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
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struct grpc_fd *fd); |
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|
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grpc_pollset_set *(*pollset_set_create)(void); |
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void (*pollset_set_destroy)(grpc_pollset_set *pollset_set); |
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void (*pollset_set_add_pollset)(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, |
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grpc_pollset *pollset); |
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void (*pollset_set_del_pollset)(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, |
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grpc_pollset *pollset); |
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void (*pollset_set_add_pollset_set)(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *bag, |
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grpc_pollset_set *item); |
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void (*pollset_set_del_pollset_set)(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *bag, |
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grpc_pollset_set *item); |
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void (*pollset_set_add_fd)(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, grpc_fd *fd); |
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void (*pollset_set_del_fd)(grpc_exec_ctx *exec_ctx, |
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grpc_pollset_set *pollset_set, grpc_fd *fd); |
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|
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void (*kick_poller)(void); |
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|
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void (*shutdown_engine)(void); |
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} grpc_event_engine_vtable; |
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|
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void grpc_event_engine_init(void); |
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void grpc_event_engine_shutdown(void); |
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|
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/* Create a wrapped file descriptor.
|
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Requires fd is a non-blocking file descriptor. |
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This takes ownership of closing fd. */ |
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grpc_fd *grpc_fd_create(int fd, const char *name); |
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|
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/* Return the wrapped fd, or -1 if it has been released or closed. */ |
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int grpc_fd_wrapped_fd(grpc_fd *fd); |
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|
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/* Releases fd to be asynchronously destroyed.
|
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on_done is called when the underlying file descriptor is definitely close()d. |
||||
If on_done is NULL, no callback will be made. |
||||
If release_fd is not NULL, it's set to fd and fd will not be closed. |
||||
Requires: *fd initialized; no outstanding notify_on_read or |
||||
notify_on_write. |
||||
MUST NOT be called with a pollset lock taken */ |
||||
void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done, |
||||
int *release_fd, const char *reason); |
||||
|
||||
/* Cause any current callbacks to error out with GRPC_CALLBACK_CANCELLED. */ |
||||
void grpc_fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd); |
||||
|
||||
/* Register read interest, causing read_cb to be called once when fd becomes
|
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readable, on deadline specified by deadline, or on shutdown triggered by |
||||
grpc_fd_shutdown. |
||||
read_cb will be called with read_cb_arg when *fd becomes readable. |
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read_cb is Called with status of GRPC_CALLBACK_SUCCESS if readable, |
||||
GRPC_CALLBACK_TIMED_OUT if the call timed out, |
||||
and CANCELLED if the call was cancelled. |
||||
|
||||
Requires:This method must not be called before the read_cb for any previous |
||||
call runs. Edge triggered events are used whenever they are supported by the |
||||
underlying platform. This means that users must drain fd in read_cb before |
||||
calling notify_on_read again. Users are also expected to handle spurious |
||||
events, i.e read_cb is called while nothing can be readable from fd */ |
||||
void grpc_fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure *closure); |
||||
|
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/* Exactly the same semantics as above, except based on writable events. */ |
||||
void grpc_fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure *closure); |
||||
|
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/* pollset_posix functions */ |
||||
|
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/* Add an fd to a pollset */ |
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void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
struct grpc_fd *fd); |
||||
|
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/* pollset_set_posix functions */ |
||||
|
||||
void grpc_pollset_set_add_fd(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *pollset_set, grpc_fd *fd); |
||||
void grpc_pollset_set_del_fd(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *pollset_set, grpc_fd *fd); |
||||
|
||||
/* override to allow tests to hook poll() usage */ |
||||
typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int); |
||||
extern grpc_poll_function_type grpc_poll_function; |
||||
extern grpc_wakeup_fd grpc_global_wakeup_fd; |
||||
|
||||
#endif /* GRPC_CORE_LIB_IOMGR_EV_POSIX_H */ |
||||
@ -1,454 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#include <grpc/support/port_platform.h> |
||||
|
||||
#ifdef GPR_POSIX_SOCKET |
||||
|
||||
#include "src/core/lib/iomgr/fd_posix.h" |
||||
|
||||
#include <assert.h> |
||||
#include <sys/socket.h> |
||||
#include <unistd.h> |
||||
|
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/log.h> |
||||
#include <grpc/support/string_util.h> |
||||
#include <grpc/support/useful.h> |
||||
|
||||
#include "src/core/lib/iomgr/pollset_posix.h" |
||||
|
||||
#define CLOSURE_NOT_READY ((grpc_closure *)0) |
||||
#define CLOSURE_READY ((grpc_closure *)1) |
||||
|
||||
/* We need to keep a freelist not because of any concerns of malloc performance
|
||||
* but instead so that implementations with multiple threads in (for example) |
||||
* epoll_wait deal with the race between pollset removal and incoming poll |
||||
* notifications. |
||||
* |
||||
* The problem is that the poller ultimately holds a reference to this |
||||
* object, so it is very difficult to know when is safe to free it, at least |
||||
* without some expensive synchronization. |
||||
* |
||||
* If we keep the object freelisted, in the worst case losing this race just |
||||
* becomes a spurious read notification on a reused fd. |
||||
*/ |
||||
/* TODO(klempner): We could use some form of polling generation count to know
|
||||
* when these are safe to free. */ |
||||
/* TODO(klempner): Consider disabling freelisting if we don't have multiple
|
||||
* threads in poll on the same fd */ |
||||
/* TODO(klempner): Batch these allocations to reduce fragmentation */ |
||||
static grpc_fd *fd_freelist = NULL; |
||||
static gpr_mu fd_freelist_mu; |
||||
|
||||
static void freelist_fd(grpc_fd *fd) { |
||||
gpr_mu_lock(&fd_freelist_mu); |
||||
fd->freelist_next = fd_freelist; |
||||
fd_freelist = fd; |
||||
grpc_iomgr_unregister_object(&fd->iomgr_object); |
||||
gpr_mu_unlock(&fd_freelist_mu); |
||||
} |
||||
|
||||
static grpc_fd *alloc_fd(int fd) { |
||||
grpc_fd *r = NULL; |
||||
gpr_mu_lock(&fd_freelist_mu); |
||||
if (fd_freelist != NULL) { |
||||
r = fd_freelist; |
||||
fd_freelist = fd_freelist->freelist_next; |
||||
} |
||||
gpr_mu_unlock(&fd_freelist_mu); |
||||
if (r == NULL) { |
||||
r = gpr_malloc(sizeof(grpc_fd)); |
||||
gpr_mu_init(&r->mu); |
||||
} |
||||
|
||||
gpr_mu_lock(&r->mu); |
||||
r->shutdown = 0; |
||||
r->read_closure = CLOSURE_NOT_READY; |
||||
r->write_closure = CLOSURE_NOT_READY; |
||||
r->fd = fd; |
||||
r->inactive_watcher_root.next = r->inactive_watcher_root.prev = |
||||
&r->inactive_watcher_root; |
||||
r->freelist_next = NULL; |
||||
r->read_watcher = r->write_watcher = NULL; |
||||
r->on_done_closure = NULL; |
||||
r->closed = 0; |
||||
r->released = 0; |
||||
gpr_atm_rel_store(&r->refst, 1); |
||||
gpr_mu_unlock(&r->mu); |
||||
|
||||
return r; |
||||
} |
||||
|
||||
static void destroy(grpc_fd *fd) { |
||||
gpr_mu_destroy(&fd->mu); |
||||
gpr_free(fd); |
||||
} |
||||
|
||||
#ifdef GRPC_FD_REF_COUNT_DEBUG |
||||
#define REF_BY(fd, n, reason) ref_by(fd, n, reason, __FILE__, __LINE__) |
||||
#define UNREF_BY(fd, n, reason) unref_by(fd, n, reason, __FILE__, __LINE__) |
||||
static void ref_by(grpc_fd *fd, int n, const char *reason, const char *file, |
||||
int line) { |
||||
gpr_log(GPR_DEBUG, "FD %d %p ref %d %d -> %d [%s; %s:%d]", fd->fd, fd, n, |
||||
gpr_atm_no_barrier_load(&fd->refst), |
||||
gpr_atm_no_barrier_load(&fd->refst) + n, reason, file, line); |
||||
#else |
||||
#define REF_BY(fd, n, reason) ref_by(fd, n) |
||||
#define UNREF_BY(fd, n, reason) unref_by(fd, n) |
||||
static void ref_by(grpc_fd *fd, int n) { |
||||
#endif |
||||
GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&fd->refst, n) > 0); |
||||
} |
||||
|
||||
#ifdef GRPC_FD_REF_COUNT_DEBUG |
||||
static void unref_by(grpc_fd *fd, int n, const char *reason, const char *file, |
||||
int line) { |
||||
gpr_atm old; |
||||
gpr_log(GPR_DEBUG, "FD %d %p unref %d %d -> %d [%s; %s:%d]", fd->fd, fd, n, |
||||
gpr_atm_no_barrier_load(&fd->refst), |
||||
gpr_atm_no_barrier_load(&fd->refst) - n, reason, file, line); |
||||
#else |
||||
static void unref_by(grpc_fd *fd, int n) { |
||||
gpr_atm old; |
||||
#endif |
||||
old = gpr_atm_full_fetch_add(&fd->refst, -n); |
||||
if (old == n) { |
||||
freelist_fd(fd); |
||||
} else { |
||||
GPR_ASSERT(old > n); |
||||
} |
||||
} |
||||
|
||||
void grpc_fd_global_init(void) { gpr_mu_init(&fd_freelist_mu); } |
||||
|
||||
void grpc_fd_global_shutdown(void) { |
||||
gpr_mu_lock(&fd_freelist_mu); |
||||
gpr_mu_unlock(&fd_freelist_mu); |
||||
while (fd_freelist != NULL) { |
||||
grpc_fd *fd = fd_freelist; |
||||
fd_freelist = fd_freelist->freelist_next; |
||||
destroy(fd); |
||||
} |
||||
gpr_mu_destroy(&fd_freelist_mu); |
||||
} |
||||
|
||||
grpc_fd *grpc_fd_create(int fd, const char *name) { |
||||
grpc_fd *r = alloc_fd(fd); |
||||
char *name2; |
||||
gpr_asprintf(&name2, "%s fd=%d", name, fd); |
||||
grpc_iomgr_register_object(&r->iomgr_object, name2); |
||||
gpr_free(name2); |
||||
#ifdef GRPC_FD_REF_COUNT_DEBUG |
||||
gpr_log(GPR_DEBUG, "FD %d %p create %s", fd, r, name); |
||||
#endif |
||||
return r; |
||||
} |
||||
|
||||
int grpc_fd_is_orphaned(grpc_fd *fd) { |
||||
return (gpr_atm_acq_load(&fd->refst) & 1) == 0; |
||||
} |
||||
|
||||
static void pollset_kick_locked(grpc_fd_watcher *watcher) { |
||||
gpr_mu_lock(&watcher->pollset->mu); |
||||
GPR_ASSERT(watcher->worker); |
||||
grpc_pollset_kick_ext(watcher->pollset, watcher->worker, |
||||
GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP); |
||||
gpr_mu_unlock(&watcher->pollset->mu); |
||||
} |
||||
|
||||
static void maybe_wake_one_watcher_locked(grpc_fd *fd) { |
||||
if (fd->inactive_watcher_root.next != &fd->inactive_watcher_root) { |
||||
pollset_kick_locked(fd->inactive_watcher_root.next); |
||||
} else if (fd->read_watcher) { |
||||
pollset_kick_locked(fd->read_watcher); |
||||
} else if (fd->write_watcher) { |
||||
pollset_kick_locked(fd->write_watcher); |
||||
} |
||||
} |
||||
|
||||
static void wake_all_watchers_locked(grpc_fd *fd) { |
||||
grpc_fd_watcher *watcher; |
||||
for (watcher = fd->inactive_watcher_root.next; |
||||
watcher != &fd->inactive_watcher_root; watcher = watcher->next) { |
||||
pollset_kick_locked(watcher); |
||||
} |
||||
if (fd->read_watcher) { |
||||
pollset_kick_locked(fd->read_watcher); |
||||
} |
||||
if (fd->write_watcher && fd->write_watcher != fd->read_watcher) { |
||||
pollset_kick_locked(fd->write_watcher); |
||||
} |
||||
} |
||||
|
||||
static int has_watchers(grpc_fd *fd) { |
||||
return fd->read_watcher != NULL || fd->write_watcher != NULL || |
||||
fd->inactive_watcher_root.next != &fd->inactive_watcher_root; |
||||
} |
||||
|
||||
static void close_fd_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { |
||||
fd->closed = 1; |
||||
if (!fd->released) { |
||||
close(fd->fd); |
||||
} else { |
||||
grpc_remove_fd_from_all_epoll_sets(fd->fd); |
||||
} |
||||
grpc_exec_ctx_enqueue(exec_ctx, fd->on_done_closure, true, NULL); |
||||
} |
||||
|
||||
int grpc_fd_wrapped_fd(grpc_fd *fd) { |
||||
if (fd->released || fd->closed) { |
||||
return -1; |
||||
} else { |
||||
return fd->fd; |
||||
} |
||||
} |
||||
|
||||
void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done, |
||||
int *release_fd, const char *reason) { |
||||
fd->on_done_closure = on_done; |
||||
fd->released = release_fd != NULL; |
||||
if (!fd->released) { |
||||
shutdown(fd->fd, SHUT_RDWR); |
||||
} else { |
||||
*release_fd = fd->fd; |
||||
} |
||||
gpr_mu_lock(&fd->mu); |
||||
REF_BY(fd, 1, reason); /* remove active status, but keep referenced */ |
||||
if (!has_watchers(fd)) { |
||||
close_fd_locked(exec_ctx, fd); |
||||
} else { |
||||
wake_all_watchers_locked(fd); |
||||
} |
||||
gpr_mu_unlock(&fd->mu); |
||||
UNREF_BY(fd, 2, reason); /* drop the reference */ |
||||
} |
||||
|
||||
/* increment refcount by two to avoid changing the orphan bit */ |
||||
#ifdef GRPC_FD_REF_COUNT_DEBUG |
||||
void grpc_fd_ref(grpc_fd *fd, const char *reason, const char *file, int line) { |
||||
ref_by(fd, 2, reason, file, line); |
||||
} |
||||
|
||||
void grpc_fd_unref(grpc_fd *fd, const char *reason, const char *file, |
||||
int line) { |
||||
unref_by(fd, 2, reason, file, line); |
||||
} |
||||
#else |
||||
void grpc_fd_ref(grpc_fd *fd) { ref_by(fd, 2); } |
||||
|
||||
void grpc_fd_unref(grpc_fd *fd) { unref_by(fd, 2); } |
||||
#endif |
||||
|
||||
static void notify_on_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure **st, grpc_closure *closure) { |
||||
if (*st == CLOSURE_NOT_READY) { |
||||
/* not ready ==> switch to a waiting state by setting the closure */ |
||||
*st = closure; |
||||
} else if (*st == CLOSURE_READY) { |
||||
/* already ready ==> queue the closure to run immediately */ |
||||
*st = CLOSURE_NOT_READY; |
||||
grpc_exec_ctx_enqueue(exec_ctx, closure, !fd->shutdown, NULL); |
||||
maybe_wake_one_watcher_locked(fd); |
||||
} else { |
||||
/* upcallptr was set to a different closure. This is an error! */ |
||||
gpr_log(GPR_ERROR, |
||||
"User called a notify_on function with a previous callback still " |
||||
"pending"); |
||||
abort(); |
||||
} |
||||
} |
||||
|
||||
/* returns 1 if state becomes not ready */ |
||||
static int set_ready_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure **st) { |
||||
if (*st == CLOSURE_READY) { |
||||
/* duplicate ready ==> ignore */ |
||||
return 0; |
||||
} else if (*st == CLOSURE_NOT_READY) { |
||||
/* not ready, and not waiting ==> flag ready */ |
||||
*st = CLOSURE_READY; |
||||
return 0; |
||||
} else { |
||||
/* waiting ==> queue closure */ |
||||
grpc_exec_ctx_enqueue(exec_ctx, *st, !fd->shutdown, NULL); |
||||
*st = CLOSURE_NOT_READY; |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
static void set_ready(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure **st) { |
||||
/* only one set_ready can be active at once (but there may be a racing
|
||||
notify_on) */ |
||||
gpr_mu_lock(&fd->mu); |
||||
set_ready_locked(exec_ctx, fd, st); |
||||
gpr_mu_unlock(&fd->mu); |
||||
} |
||||
|
||||
void grpc_fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { |
||||
gpr_mu_lock(&fd->mu); |
||||
GPR_ASSERT(!fd->shutdown); |
||||
fd->shutdown = 1; |
||||
set_ready_locked(exec_ctx, fd, &fd->read_closure); |
||||
set_ready_locked(exec_ctx, fd, &fd->write_closure); |
||||
gpr_mu_unlock(&fd->mu); |
||||
} |
||||
|
||||
void grpc_fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure *closure) { |
||||
gpr_mu_lock(&fd->mu); |
||||
notify_on_locked(exec_ctx, fd, &fd->read_closure, closure); |
||||
gpr_mu_unlock(&fd->mu); |
||||
} |
||||
|
||||
void grpc_fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure *closure) { |
||||
gpr_mu_lock(&fd->mu); |
||||
notify_on_locked(exec_ctx, fd, &fd->write_closure, closure); |
||||
gpr_mu_unlock(&fd->mu); |
||||
} |
||||
|
||||
uint32_t grpc_fd_begin_poll(grpc_fd *fd, grpc_pollset *pollset, |
||||
grpc_pollset_worker *worker, uint32_t read_mask, |
||||
uint32_t write_mask, grpc_fd_watcher *watcher) { |
||||
uint32_t mask = 0; |
||||
grpc_closure *cur; |
||||
int requested; |
||||
/* keep track of pollers that have requested our events, in case they change
|
||||
*/ |
||||
GRPC_FD_REF(fd, "poll"); |
||||
|
||||
gpr_mu_lock(&fd->mu); |
||||
|
||||
/* if we are shutdown, then don't add to the watcher set */ |
||||
if (fd->shutdown) { |
||||
watcher->fd = NULL; |
||||
watcher->pollset = NULL; |
||||
watcher->worker = NULL; |
||||
gpr_mu_unlock(&fd->mu); |
||||
GRPC_FD_UNREF(fd, "poll"); |
||||
return 0; |
||||
} |
||||
|
||||
/* if there is nobody polling for read, but we need to, then start doing so */ |
||||
cur = fd->read_closure; |
||||
requested = cur != CLOSURE_READY; |
||||
if (read_mask && fd->read_watcher == NULL && requested) { |
||||
fd->read_watcher = watcher; |
||||
mask |= read_mask; |
||||
} |
||||
/* if there is nobody polling for write, but we need to, then start doing so
|
||||
*/ |
||||
cur = fd->write_closure; |
||||
requested = cur != CLOSURE_READY; |
||||
if (write_mask && fd->write_watcher == NULL && requested) { |
||||
fd->write_watcher = watcher; |
||||
mask |= write_mask; |
||||
} |
||||
/* if not polling, remember this watcher in case we need someone to later */ |
||||
if (mask == 0 && worker != NULL) { |
||||
watcher->next = &fd->inactive_watcher_root; |
||||
watcher->prev = watcher->next->prev; |
||||
watcher->next->prev = watcher->prev->next = watcher; |
||||
} |
||||
watcher->pollset = pollset; |
||||
watcher->worker = worker; |
||||
watcher->fd = fd; |
||||
gpr_mu_unlock(&fd->mu); |
||||
|
||||
return mask; |
||||
} |
||||
|
||||
void grpc_fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *watcher, |
||||
int got_read, int got_write) { |
||||
int was_polling = 0; |
||||
int kick = 0; |
||||
grpc_fd *fd = watcher->fd; |
||||
|
||||
if (fd == NULL) { |
||||
return; |
||||
} |
||||
|
||||
gpr_mu_lock(&fd->mu); |
||||
|
||||
if (watcher == fd->read_watcher) { |
||||
/* remove read watcher, kick if we still need a read */ |
||||
was_polling = 1; |
||||
if (!got_read) { |
||||
kick = 1; |
||||
} |
||||
fd->read_watcher = NULL; |
||||
} |
||||
if (watcher == fd->write_watcher) { |
||||
/* remove write watcher, kick if we still need a write */ |
||||
was_polling = 1; |
||||
if (!got_write) { |
||||
kick = 1; |
||||
} |
||||
fd->write_watcher = NULL; |
||||
} |
||||
if (!was_polling && watcher->worker != NULL) { |
||||
/* remove from inactive list */ |
||||
watcher->next->prev = watcher->prev; |
||||
watcher->prev->next = watcher->next; |
||||
} |
||||
if (got_read) { |
||||
if (set_ready_locked(exec_ctx, fd, &fd->read_closure)) { |
||||
kick = 1; |
||||
} |
||||
} |
||||
if (got_write) { |
||||
if (set_ready_locked(exec_ctx, fd, &fd->write_closure)) { |
||||
kick = 1; |
||||
} |
||||
} |
||||
if (kick) { |
||||
maybe_wake_one_watcher_locked(fd); |
||||
} |
||||
if (grpc_fd_is_orphaned(fd) && !has_watchers(fd) && !fd->closed) { |
||||
close_fd_locked(exec_ctx, fd); |
||||
} |
||||
gpr_mu_unlock(&fd->mu); |
||||
|
||||
GRPC_FD_UNREF(fd, "poll"); |
||||
} |
||||
|
||||
void grpc_fd_become_readable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { |
||||
set_ready(exec_ctx, fd, &fd->read_closure); |
||||
} |
||||
|
||||
void grpc_fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { |
||||
set_ready(exec_ctx, fd, &fd->write_closure); |
||||
} |
||||
|
||||
#endif |
||||
@ -1,192 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#ifndef GRPC_CORE_LIB_IOMGR_FD_POSIX_H |
||||
#define GRPC_CORE_LIB_IOMGR_FD_POSIX_H |
||||
|
||||
#include <grpc/support/atm.h> |
||||
#include <grpc/support/sync.h> |
||||
#include <grpc/support/time.h> |
||||
#include "src/core/lib/iomgr/iomgr_internal.h" |
||||
#include "src/core/lib/iomgr/pollset.h" |
||||
|
||||
typedef struct grpc_fd grpc_fd; |
||||
|
||||
typedef struct grpc_fd_watcher { |
||||
struct grpc_fd_watcher *next; |
||||
struct grpc_fd_watcher *prev; |
||||
grpc_pollset *pollset; |
||||
grpc_pollset_worker *worker; |
||||
grpc_fd *fd; |
||||
} grpc_fd_watcher; |
||||
|
||||
struct grpc_fd { |
||||
int fd; |
||||
/* refst format:
|
||||
bit0: 1=active/0=orphaned |
||||
bit1-n: refcount |
||||
meaning that mostly we ref by two to avoid altering the orphaned bit, |
||||
and just unref by 1 when we're ready to flag the object as orphaned */ |
||||
gpr_atm refst; |
||||
|
||||
gpr_mu mu; |
||||
int shutdown; |
||||
int closed; |
||||
int released; |
||||
|
||||
/* The watcher list.
|
||||
|
||||
The following watcher related fields are protected by watcher_mu. |
||||
|
||||
An fd_watcher is an ephemeral object created when an fd wants to |
||||
begin polling, and destroyed after the poll. |
||||
|
||||
It denotes the fd's interest in whether to read poll or write poll |
||||
or both or neither on this fd. |
||||
|
||||
If a watcher is asked to poll for reads or writes, the read_watcher |
||||
or write_watcher fields are set respectively. A watcher may be asked |
||||
to poll for both, in which case both fields will be set. |
||||
|
||||
read_watcher and write_watcher may be NULL if no watcher has been |
||||
asked to poll for reads or writes. |
||||
|
||||
If an fd_watcher is not asked to poll for reads or writes, it's added |
||||
to a linked list of inactive watchers, rooted at inactive_watcher_root. |
||||
If at a later time there becomes need of a poller to poll, one of |
||||
the inactive pollers may be kicked out of their poll loops to take |
||||
that responsibility. */ |
||||
grpc_fd_watcher inactive_watcher_root; |
||||
grpc_fd_watcher *read_watcher; |
||||
grpc_fd_watcher *write_watcher; |
||||
|
||||
grpc_closure *read_closure; |
||||
grpc_closure *write_closure; |
||||
|
||||
struct grpc_fd *freelist_next; |
||||
|
||||
grpc_closure *on_done_closure; |
||||
|
||||
grpc_iomgr_object iomgr_object; |
||||
}; |
||||
|
||||
/* Create a wrapped file descriptor.
|
||||
Requires fd is a non-blocking file descriptor. |
||||
This takes ownership of closing fd. */ |
||||
grpc_fd *grpc_fd_create(int fd, const char *name); |
||||
|
||||
/* Return the wrapped fd, or -1 if it has been released or closed. */ |
||||
int grpc_fd_wrapped_fd(grpc_fd *fd); |
||||
|
||||
/* Releases fd to be asynchronously destroyed.
|
||||
on_done is called when the underlying file descriptor is definitely close()d. |
||||
If on_done is NULL, no callback will be made. |
||||
If release_fd is not NULL, it's set to fd and fd will not be closed. |
||||
Requires: *fd initialized; no outstanding notify_on_read or |
||||
notify_on_write. |
||||
MUST NOT be called with a pollset lock taken */ |
||||
void grpc_fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, grpc_closure *on_done, |
||||
int *release_fd, const char *reason); |
||||
|
||||
/* Begin polling on an fd.
|
||||
Registers that the given pollset is interested in this fd - so that if read |
||||
or writability interest changes, the pollset can be kicked to pick up that |
||||
new interest. |
||||
Return value is: |
||||
(fd_needs_read? read_mask : 0) | (fd_needs_write? write_mask : 0) |
||||
i.e. a combination of read_mask and write_mask determined by the fd's current |
||||
interest in said events. |
||||
Polling strategies that do not need to alter their behavior depending on the |
||||
fd's current interest (such as epoll) do not need to call this function. |
||||
MUST NOT be called with a pollset lock taken */ |
||||
uint32_t grpc_fd_begin_poll(grpc_fd *fd, grpc_pollset *pollset, |
||||
grpc_pollset_worker *worker, uint32_t read_mask, |
||||
uint32_t write_mask, grpc_fd_watcher *rec); |
||||
/* Complete polling previously started with grpc_fd_begin_poll
|
||||
MUST NOT be called with a pollset lock taken |
||||
if got_read or got_write are 1, also does the become_{readable,writable} as |
||||
appropriate. */ |
||||
void grpc_fd_end_poll(grpc_exec_ctx *exec_ctx, grpc_fd_watcher *rec, |
||||
int got_read, int got_write); |
||||
|
||||
/* Return 1 if this fd is orphaned, 0 otherwise */ |
||||
int grpc_fd_is_orphaned(grpc_fd *fd); |
||||
|
||||
/* Cause any current callbacks to error out with GRPC_CALLBACK_CANCELLED. */ |
||||
void grpc_fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd); |
||||
|
||||
/* Register read interest, causing read_cb to be called once when fd becomes
|
||||
readable, on deadline specified by deadline, or on shutdown triggered by |
||||
grpc_fd_shutdown. |
||||
read_cb will be called with read_cb_arg when *fd becomes readable. |
||||
read_cb is Called with status of GRPC_CALLBACK_SUCCESS if readable, |
||||
GRPC_CALLBACK_TIMED_OUT if the call timed out, |
||||
and CANCELLED if the call was cancelled. |
||||
|
||||
Requires:This method must not be called before the read_cb for any previous |
||||
call runs. Edge triggered events are used whenever they are supported by the |
||||
underlying platform. This means that users must drain fd in read_cb before |
||||
calling notify_on_read again. Users are also expected to handle spurious |
||||
events, i.e read_cb is called while nothing can be readable from fd */ |
||||
void grpc_fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure *closure); |
||||
|
||||
/* Exactly the same semantics as above, except based on writable events. */ |
||||
void grpc_fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, |
||||
grpc_closure *closure); |
||||
|
||||
/* Notification from the poller to an fd that it has become readable or
|
||||
writable. |
||||
If allow_synchronous_callback is 1, allow running the fd callback inline |
||||
in this callstack, otherwise register an asynchronous callback and return */ |
||||
void grpc_fd_become_readable(grpc_exec_ctx *exec_ctx, grpc_fd *fd); |
||||
void grpc_fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd); |
||||
|
||||
/* Reference counting for fds */ |
||||
/*#define GRPC_FD_REF_COUNT_DEBUG*/ |
||||
#ifdef GRPC_FD_REF_COUNT_DEBUG |
||||
void grpc_fd_ref(grpc_fd *fd, const char *reason, const char *file, int line); |
||||
void grpc_fd_unref(grpc_fd *fd, const char *reason, const char *file, int line); |
||||
#define GRPC_FD_REF(fd, reason) grpc_fd_ref(fd, reason, __FILE__, __LINE__) |
||||
#define GRPC_FD_UNREF(fd, reason) grpc_fd_unref(fd, reason, __FILE__, __LINE__) |
||||
#else |
||||
void grpc_fd_ref(grpc_fd *fd); |
||||
void grpc_fd_unref(grpc_fd *fd); |
||||
#define GRPC_FD_REF(fd, reason) grpc_fd_ref(fd) |
||||
#define GRPC_FD_UNREF(fd, reason) grpc_fd_unref(fd) |
||||
#endif |
||||
|
||||
void grpc_fd_global_init(void); |
||||
void grpc_fd_global_shutdown(void); |
||||
|
||||
#endif /* GRPC_CORE_LIB_IOMGR_FD_POSIX_H */ |
||||
@ -1,324 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#include <grpc/support/port_platform.h> |
||||
|
||||
#ifdef GPR_LINUX_MULTIPOLL_WITH_EPOLL |
||||
|
||||
#include <errno.h> |
||||
#include <poll.h> |
||||
#include <string.h> |
||||
#include <sys/epoll.h> |
||||
#include <unistd.h> |
||||
|
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/log.h> |
||||
#include <grpc/support/useful.h> |
||||
#include "src/core/lib/iomgr/fd_posix.h" |
||||
#include "src/core/lib/iomgr/pollset_posix.h" |
||||
#include "src/core/lib/profiling/timers.h" |
||||
#include "src/core/lib/support/block_annotate.h" |
||||
|
||||
struct epoll_fd_list { |
||||
int *epoll_fds; |
||||
size_t count; |
||||
size_t capacity; |
||||
}; |
||||
|
||||
static struct epoll_fd_list epoll_fd_global_list; |
||||
static gpr_once init_epoll_fd_list_mu = GPR_ONCE_INIT; |
||||
static gpr_mu epoll_fd_list_mu; |
||||
|
||||
static void init_mu(void) { gpr_mu_init(&epoll_fd_list_mu); } |
||||
|
||||
static void add_epoll_fd_to_global_list(int epoll_fd) { |
||||
gpr_once_init(&init_epoll_fd_list_mu, init_mu); |
||||
|
||||
gpr_mu_lock(&epoll_fd_list_mu); |
||||
if (epoll_fd_global_list.count == epoll_fd_global_list.capacity) { |
||||
epoll_fd_global_list.capacity = |
||||
GPR_MAX((size_t)8, epoll_fd_global_list.capacity * 2); |
||||
epoll_fd_global_list.epoll_fds = |
||||
gpr_realloc(epoll_fd_global_list.epoll_fds, |
||||
epoll_fd_global_list.capacity * sizeof(int)); |
||||
} |
||||
epoll_fd_global_list.epoll_fds[epoll_fd_global_list.count++] = epoll_fd; |
||||
gpr_mu_unlock(&epoll_fd_list_mu); |
||||
} |
||||
|
||||
static void remove_epoll_fd_from_global_list(int epoll_fd) { |
||||
gpr_mu_lock(&epoll_fd_list_mu); |
||||
GPR_ASSERT(epoll_fd_global_list.count > 0); |
||||
for (size_t i = 0; i < epoll_fd_global_list.count; i++) { |
||||
if (epoll_fd == epoll_fd_global_list.epoll_fds[i]) { |
||||
epoll_fd_global_list.epoll_fds[i] = |
||||
epoll_fd_global_list.epoll_fds[--(epoll_fd_global_list.count)]; |
||||
break; |
||||
} |
||||
} |
||||
gpr_mu_unlock(&epoll_fd_list_mu); |
||||
} |
||||
|
||||
void grpc_remove_fd_from_all_epoll_sets(int fd) { |
||||
int err; |
||||
gpr_once_init(&init_epoll_fd_list_mu, init_mu); |
||||
gpr_mu_lock(&epoll_fd_list_mu); |
||||
if (epoll_fd_global_list.count == 0) { |
||||
gpr_mu_unlock(&epoll_fd_list_mu); |
||||
return; |
||||
} |
||||
for (size_t i = 0; i < epoll_fd_global_list.count; i++) { |
||||
err = epoll_ctl(epoll_fd_global_list.epoll_fds[i], EPOLL_CTL_DEL, fd, NULL); |
||||
if (err < 0 && errno != ENOENT) { |
||||
gpr_log(GPR_ERROR, "epoll_ctl del for %d failed: %s", fd, |
||||
strerror(errno)); |
||||
} |
||||
} |
||||
gpr_mu_unlock(&epoll_fd_list_mu); |
||||
} |
||||
|
||||
typedef struct { |
||||
grpc_pollset *pollset; |
||||
grpc_fd *fd; |
||||
grpc_closure closure; |
||||
} delayed_add; |
||||
|
||||
typedef struct { int epoll_fd; } pollset_hdr; |
||||
|
||||
static void finally_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
grpc_fd *fd) { |
||||
pollset_hdr *h = pollset->data.ptr; |
||||
struct epoll_event ev; |
||||
int err; |
||||
grpc_fd_watcher watcher; |
||||
|
||||
/* We pretend to be polling whilst adding an fd to keep the fd from being
|
||||
closed during the add. This may result in a spurious wakeup being assigned |
||||
to this pollset whilst adding, but that should be benign. */ |
||||
GPR_ASSERT(grpc_fd_begin_poll(fd, pollset, NULL, 0, 0, &watcher) == 0); |
||||
if (watcher.fd != NULL) { |
||||
ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET); |
||||
ev.data.ptr = fd; |
||||
err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD, fd->fd, &ev); |
||||
if (err < 0) { |
||||
/* FDs may be added to a pollset multiple times, so EEXIST is normal. */ |
||||
if (errno != EEXIST) { |
||||
gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s", fd->fd, |
||||
strerror(errno)); |
||||
} |
||||
} |
||||
} |
||||
grpc_fd_end_poll(exec_ctx, &watcher, 0, 0); |
||||
} |
||||
|
||||
static void perform_delayed_add(grpc_exec_ctx *exec_ctx, void *arg, |
||||
bool iomgr_status) { |
||||
delayed_add *da = arg; |
||||
|
||||
if (!grpc_fd_is_orphaned(da->fd)) { |
||||
finally_add_fd(exec_ctx, da->pollset, da->fd); |
||||
} |
||||
|
||||
gpr_mu_lock(&da->pollset->mu); |
||||
da->pollset->in_flight_cbs--; |
||||
if (da->pollset->shutting_down) { |
||||
/* We don't care about this pollset anymore. */ |
||||
if (da->pollset->in_flight_cbs == 0 && !da->pollset->called_shutdown) { |
||||
da->pollset->called_shutdown = 1; |
||||
grpc_exec_ctx_enqueue(exec_ctx, da->pollset->shutdown_done, true, NULL); |
||||
} |
||||
} |
||||
gpr_mu_unlock(&da->pollset->mu); |
||||
|
||||
GRPC_FD_UNREF(da->fd, "delayed_add"); |
||||
|
||||
gpr_free(da); |
||||
} |
||||
|
||||
static void multipoll_with_epoll_pollset_add_fd(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, |
||||
grpc_fd *fd, |
||||
int and_unlock_pollset) { |
||||
if (and_unlock_pollset) { |
||||
gpr_mu_unlock(&pollset->mu); |
||||
finally_add_fd(exec_ctx, pollset, fd); |
||||
} else { |
||||
delayed_add *da = gpr_malloc(sizeof(*da)); |
||||
da->pollset = pollset; |
||||
da->fd = fd; |
||||
GRPC_FD_REF(fd, "delayed_add"); |
||||
grpc_closure_init(&da->closure, perform_delayed_add, da); |
||||
pollset->in_flight_cbs++; |
||||
grpc_exec_ctx_enqueue(exec_ctx, &da->closure, true, NULL); |
||||
} |
||||
} |
||||
|
||||
/* TODO(klempner): We probably want to turn this down a bit */ |
||||
#define GRPC_EPOLL_MAX_EVENTS 1000 |
||||
|
||||
static void multipoll_with_epoll_pollset_maybe_work_and_unlock( |
||||
grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker, |
||||
gpr_timespec deadline, gpr_timespec now) { |
||||
struct epoll_event ep_ev[GRPC_EPOLL_MAX_EVENTS]; |
||||
int ep_rv; |
||||
int poll_rv; |
||||
pollset_hdr *h = pollset->data.ptr; |
||||
int timeout_ms; |
||||
struct pollfd pfds[2]; |
||||
|
||||
/* If you want to ignore epoll's ability to sanely handle parallel pollers,
|
||||
* for a more apples-to-apples performance comparison with poll, add a |
||||
* if (pollset->counter != 0) { return 0; } |
||||
* here. |
||||
*/ |
||||
|
||||
gpr_mu_unlock(&pollset->mu); |
||||
|
||||
timeout_ms = grpc_poll_deadline_to_millis_timeout(deadline, now); |
||||
|
||||
pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd); |
||||
pfds[0].events = POLLIN; |
||||
pfds[0].revents = 0; |
||||
pfds[1].fd = h->epoll_fd; |
||||
pfds[1].events = POLLIN; |
||||
pfds[1].revents = 0; |
||||
|
||||
/* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
|
||||
even going into the blocking annotation if possible */ |
||||
GPR_TIMER_BEGIN("poll", 0); |
||||
GRPC_SCHEDULING_START_BLOCKING_REGION; |
||||
poll_rv = grpc_poll_function(pfds, 2, timeout_ms); |
||||
GRPC_SCHEDULING_END_BLOCKING_REGION; |
||||
GPR_TIMER_END("poll", 0); |
||||
|
||||
if (poll_rv < 0) { |
||||
if (errno != EINTR) { |
||||
gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno)); |
||||
} |
||||
} else if (poll_rv == 0) { |
||||
/* do nothing */ |
||||
} else { |
||||
if (pfds[0].revents) { |
||||
grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd); |
||||
} |
||||
if (pfds[1].revents) { |
||||
do { |
||||
/* The following epoll_wait never blocks; it has a timeout of 0 */ |
||||
ep_rv = epoll_wait(h->epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, 0); |
||||
if (ep_rv < 0) { |
||||
if (errno != EINTR) { |
||||
gpr_log(GPR_ERROR, "epoll_wait() failed: %s", strerror(errno)); |
||||
} |
||||
} else { |
||||
int i; |
||||
for (i = 0; i < ep_rv; ++i) { |
||||
grpc_fd *fd = ep_ev[i].data.ptr; |
||||
/* TODO(klempner): We might want to consider making err and pri
|
||||
* separate events */ |
||||
int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP); |
||||
int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI); |
||||
int write_ev = ep_ev[i].events & EPOLLOUT; |
||||
if (fd == NULL) { |
||||
grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd); |
||||
} else { |
||||
if (read_ev || cancel) { |
||||
grpc_fd_become_readable(exec_ctx, fd); |
||||
} |
||||
if (write_ev || cancel) { |
||||
grpc_fd_become_writable(exec_ctx, fd); |
||||
} |
||||
} |
||||
} |
||||
} |
||||
} while (ep_rv == GRPC_EPOLL_MAX_EVENTS); |
||||
} |
||||
} |
||||
} |
||||
|
||||
static void multipoll_with_epoll_pollset_finish_shutdown( |
||||
grpc_pollset *pollset) {} |
||||
|
||||
static void multipoll_with_epoll_pollset_destroy(grpc_pollset *pollset) { |
||||
pollset_hdr *h = pollset->data.ptr; |
||||
close(h->epoll_fd); |
||||
remove_epoll_fd_from_global_list(h->epoll_fd); |
||||
gpr_free(h); |
||||
} |
||||
|
||||
static const grpc_pollset_vtable multipoll_with_epoll_pollset = { |
||||
multipoll_with_epoll_pollset_add_fd, |
||||
multipoll_with_epoll_pollset_maybe_work_and_unlock, |
||||
multipoll_with_epoll_pollset_finish_shutdown, |
||||
multipoll_with_epoll_pollset_destroy}; |
||||
|
||||
static void epoll_become_multipoller(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, grpc_fd **fds, |
||||
size_t nfds) { |
||||
size_t i; |
||||
pollset_hdr *h = gpr_malloc(sizeof(pollset_hdr)); |
||||
struct epoll_event ev; |
||||
int err; |
||||
|
||||
pollset->vtable = &multipoll_with_epoll_pollset; |
||||
pollset->data.ptr = h; |
||||
h->epoll_fd = epoll_create1(EPOLL_CLOEXEC); |
||||
if (h->epoll_fd < 0) { |
||||
/* TODO(klempner): Fall back to poll here, especially on ENOSYS */ |
||||
gpr_log(GPR_ERROR, "epoll_create1 failed: %s", strerror(errno)); |
||||
abort(); |
||||
} |
||||
add_epoll_fd_to_global_list(h->epoll_fd); |
||||
|
||||
ev.events = (uint32_t)(EPOLLIN | EPOLLET); |
||||
ev.data.ptr = NULL; |
||||
err = epoll_ctl(h->epoll_fd, EPOLL_CTL_ADD, |
||||
GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd), &ev); |
||||
if (err < 0) { |
||||
gpr_log(GPR_ERROR, "epoll_ctl add for %d failed: %s", |
||||
GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd), |
||||
strerror(errno)); |
||||
} |
||||
|
||||
for (i = 0; i < nfds; i++) { |
||||
multipoll_with_epoll_pollset_add_fd(exec_ctx, pollset, fds[i], 0); |
||||
} |
||||
} |
||||
|
||||
grpc_platform_become_multipoller_type grpc_platform_become_multipoller = |
||||
epoll_become_multipoller; |
||||
|
||||
#else /* GPR_LINUX_MULTIPOLL_WITH_EPOLL */ |
||||
|
||||
void grpc_remove_fd_from_all_epoll_sets(int fd) {} |
||||
|
||||
#endif /* GPR_LINUX_MULTIPOLL_WITH_EPOLL */ |
||||
@ -1,234 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#include <grpc/support/port_platform.h> |
||||
|
||||
#ifdef GPR_POSIX_SOCKET |
||||
|
||||
#include "src/core/lib/iomgr/pollset_posix.h" |
||||
|
||||
#include <errno.h> |
||||
#include <poll.h> |
||||
#include <stdlib.h> |
||||
#include <string.h> |
||||
|
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/log.h> |
||||
#include <grpc/support/useful.h> |
||||
|
||||
#include "src/core/lib/iomgr/fd_posix.h" |
||||
#include "src/core/lib/iomgr/iomgr_internal.h" |
||||
#include "src/core/lib/iomgr/pollset_posix.h" |
||||
#include "src/core/lib/support/block_annotate.h" |
||||
|
||||
typedef struct { |
||||
/* all polled fds */ |
||||
size_t fd_count; |
||||
size_t fd_capacity; |
||||
grpc_fd **fds; |
||||
/* fds that have been removed from the pollset explicitly */ |
||||
size_t del_count; |
||||
size_t del_capacity; |
||||
grpc_fd **dels; |
||||
} pollset_hdr; |
||||
|
||||
static void multipoll_with_poll_pollset_add_fd(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, |
||||
grpc_fd *fd, |
||||
int and_unlock_pollset) { |
||||
size_t i; |
||||
pollset_hdr *h = pollset->data.ptr; |
||||
/* TODO(ctiller): this is O(num_fds^2); maybe switch to a hash set here */ |
||||
for (i = 0; i < h->fd_count; i++) { |
||||
if (h->fds[i] == fd) goto exit; |
||||
} |
||||
if (h->fd_count == h->fd_capacity) { |
||||
h->fd_capacity = GPR_MAX(h->fd_capacity + 8, h->fd_count * 3 / 2); |
||||
h->fds = gpr_realloc(h->fds, sizeof(grpc_fd *) * h->fd_capacity); |
||||
} |
||||
h->fds[h->fd_count++] = fd; |
||||
GRPC_FD_REF(fd, "multipoller"); |
||||
exit: |
||||
if (and_unlock_pollset) { |
||||
gpr_mu_unlock(&pollset->mu); |
||||
} |
||||
} |
||||
|
||||
static void multipoll_with_poll_pollset_maybe_work_and_unlock( |
||||
grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker, |
||||
gpr_timespec deadline, gpr_timespec now) { |
||||
#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR) |
||||
#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR) |
||||
|
||||
int timeout; |
||||
int r; |
||||
size_t i, j, fd_count; |
||||
nfds_t pfd_count; |
||||
pollset_hdr *h; |
||||
/* TODO(ctiller): inline some elements to avoid an allocation */ |
||||
grpc_fd_watcher *watchers; |
||||
struct pollfd *pfds; |
||||
|
||||
h = pollset->data.ptr; |
||||
timeout = grpc_poll_deadline_to_millis_timeout(deadline, now); |
||||
/* TODO(ctiller): perform just one malloc here if we exceed the inline case */ |
||||
pfds = gpr_malloc(sizeof(*pfds) * (h->fd_count + 2)); |
||||
watchers = gpr_malloc(sizeof(*watchers) * (h->fd_count + 2)); |
||||
fd_count = 0; |
||||
pfd_count = 2; |
||||
pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd); |
||||
pfds[0].events = POLLIN; |
||||
pfds[0].revents = 0; |
||||
pfds[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd); |
||||
pfds[1].events = POLLIN; |
||||
pfds[1].revents = 0; |
||||
for (i = 0; i < h->fd_count; i++) { |
||||
int remove = grpc_fd_is_orphaned(h->fds[i]); |
||||
for (j = 0; !remove && j < h->del_count; j++) { |
||||
if (h->fds[i] == h->dels[j]) remove = 1; |
||||
} |
||||
if (remove) { |
||||
GRPC_FD_UNREF(h->fds[i], "multipoller"); |
||||
} else { |
||||
h->fds[fd_count++] = h->fds[i]; |
||||
watchers[pfd_count].fd = h->fds[i]; |
||||
GRPC_FD_REF(watchers[pfd_count].fd, "multipoller_start"); |
||||
pfds[pfd_count].fd = h->fds[i]->fd; |
||||
pfds[pfd_count].revents = 0; |
||||
pfd_count++; |
||||
} |
||||
} |
||||
for (j = 0; j < h->del_count; j++) { |
||||
GRPC_FD_UNREF(h->dels[j], "multipoller_del"); |
||||
} |
||||
h->del_count = 0; |
||||
h->fd_count = fd_count; |
||||
gpr_mu_unlock(&pollset->mu); |
||||
|
||||
for (i = 2; i < pfd_count; i++) { |
||||
grpc_fd *fd = watchers[i].fd; |
||||
pfds[i].events = (short)grpc_fd_begin_poll(fd, pollset, worker, POLLIN, |
||||
POLLOUT, &watchers[i]); |
||||
GRPC_FD_UNREF(fd, "multipoller_start"); |
||||
} |
||||
|
||||
/* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
|
||||
even going into the blocking annotation if possible */ |
||||
GRPC_SCHEDULING_START_BLOCKING_REGION; |
||||
r = grpc_poll_function(pfds, pfd_count, timeout); |
||||
GRPC_SCHEDULING_END_BLOCKING_REGION; |
||||
|
||||
if (r < 0) { |
||||
if (errno != EINTR) { |
||||
gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno)); |
||||
} |
||||
for (i = 2; i < pfd_count; i++) { |
||||
grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0); |
||||
} |
||||
} else if (r == 0) { |
||||
for (i = 2; i < pfd_count; i++) { |
||||
grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0); |
||||
} |
||||
} else { |
||||
if (pfds[0].revents & POLLIN_CHECK) { |
||||
grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd); |
||||
} |
||||
if (pfds[1].revents & POLLIN_CHECK) { |
||||
grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd); |
||||
} |
||||
for (i = 2; i < pfd_count; i++) { |
||||
if (watchers[i].fd == NULL) { |
||||
grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0); |
||||
continue; |
||||
} |
||||
grpc_fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN_CHECK, |
||||
pfds[i].revents & POLLOUT_CHECK); |
||||
} |
||||
} |
||||
|
||||
gpr_free(pfds); |
||||
gpr_free(watchers); |
||||
} |
||||
|
||||
static void multipoll_with_poll_pollset_finish_shutdown(grpc_pollset *pollset) { |
||||
size_t i; |
||||
pollset_hdr *h = pollset->data.ptr; |
||||
for (i = 0; i < h->fd_count; i++) { |
||||
GRPC_FD_UNREF(h->fds[i], "multipoller"); |
||||
} |
||||
for (i = 0; i < h->del_count; i++) { |
||||
GRPC_FD_UNREF(h->dels[i], "multipoller_del"); |
||||
} |
||||
h->fd_count = 0; |
||||
h->del_count = 0; |
||||
} |
||||
|
||||
static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) { |
||||
pollset_hdr *h = pollset->data.ptr; |
||||
multipoll_with_poll_pollset_finish_shutdown(pollset); |
||||
gpr_free(h->fds); |
||||
gpr_free(h->dels); |
||||
gpr_free(h); |
||||
} |
||||
|
||||
static const grpc_pollset_vtable multipoll_with_poll_pollset = { |
||||
multipoll_with_poll_pollset_add_fd, |
||||
multipoll_with_poll_pollset_maybe_work_and_unlock, |
||||
multipoll_with_poll_pollset_finish_shutdown, |
||||
multipoll_with_poll_pollset_destroy}; |
||||
|
||||
void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, grpc_fd **fds, |
||||
size_t nfds) { |
||||
size_t i; |
||||
pollset_hdr *h = gpr_malloc(sizeof(pollset_hdr)); |
||||
pollset->vtable = &multipoll_with_poll_pollset; |
||||
pollset->data.ptr = h; |
||||
h->fd_count = nfds; |
||||
h->fd_capacity = nfds; |
||||
h->fds = gpr_malloc(nfds * sizeof(grpc_fd *)); |
||||
h->del_count = 0; |
||||
h->del_capacity = 0; |
||||
h->dels = NULL; |
||||
for (i = 0; i < nfds; i++) { |
||||
h->fds[i] = fds[i]; |
||||
GRPC_FD_REF(fds[i], "multipoller"); |
||||
} |
||||
} |
||||
|
||||
#endif /* GPR_POSIX_SOCKET */ |
||||
|
||||
#ifdef GPR_POSIX_MULTIPOLL_WITH_POLL |
||||
grpc_platform_become_multipoller_type grpc_platform_become_multipoller = |
||||
grpc_poll_become_multipoller; |
||||
#endif |
||||
@ -1,633 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#include <grpc/support/port_platform.h> |
||||
|
||||
#ifdef GPR_POSIX_SOCKET |
||||
|
||||
#include "src/core/lib/iomgr/pollset_posix.h" |
||||
|
||||
#include <errno.h> |
||||
#include <stdlib.h> |
||||
#include <string.h> |
||||
#include <unistd.h> |
||||
|
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/log.h> |
||||
#include <grpc/support/thd.h> |
||||
#include <grpc/support/tls.h> |
||||
#include <grpc/support/useful.h> |
||||
#include "src/core/lib/iomgr/fd_posix.h" |
||||
#include "src/core/lib/iomgr/iomgr_internal.h" |
||||
#include "src/core/lib/iomgr/socket_utils_posix.h" |
||||
#include "src/core/lib/profiling/timers.h" |
||||
#include "src/core/lib/support/block_annotate.h" |
||||
|
||||
GPR_TLS_DECL(g_current_thread_poller); |
||||
GPR_TLS_DECL(g_current_thread_worker); |
||||
|
||||
/** Default poll() function - a pointer so that it can be overridden by some
|
||||
* tests */ |
||||
grpc_poll_function_type grpc_poll_function = poll; |
||||
|
||||
/** The alarm system needs to be able to wakeup 'some poller' sometimes
|
||||
* (specifically when a new alarm needs to be triggered earlier than the next |
||||
* alarm 'epoch'). |
||||
* This wakeup_fd gives us something to alert on when such a case occurs. */ |
||||
grpc_wakeup_fd grpc_global_wakeup_fd; |
||||
|
||||
static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) { |
||||
worker->prev->next = worker->next; |
||||
worker->next->prev = worker->prev; |
||||
} |
||||
|
||||
int grpc_pollset_has_workers(grpc_pollset *p) { |
||||
return p->root_worker.next != &p->root_worker; |
||||
} |
||||
|
||||
static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) { |
||||
if (grpc_pollset_has_workers(p)) { |
||||
grpc_pollset_worker *w = p->root_worker.next; |
||||
remove_worker(p, w); |
||||
return w; |
||||
} else { |
||||
return NULL; |
||||
} |
||||
} |
||||
|
||||
static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) { |
||||
worker->next = &p->root_worker; |
||||
worker->prev = worker->next->prev; |
||||
worker->prev->next = worker->next->prev = worker; |
||||
} |
||||
|
||||
static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) { |
||||
worker->prev = &p->root_worker; |
||||
worker->next = worker->prev->next; |
||||
worker->prev->next = worker->next->prev = worker; |
||||
} |
||||
|
||||
size_t grpc_pollset_size(void) { return sizeof(grpc_pollset); } |
||||
|
||||
void grpc_pollset_kick_ext(grpc_pollset *p, |
||||
grpc_pollset_worker *specific_worker, |
||||
uint32_t flags) { |
||||
GPR_TIMER_BEGIN("grpc_pollset_kick_ext", 0); |
||||
|
||||
/* pollset->mu already held */ |
||||
if (specific_worker != NULL) { |
||||
if (specific_worker == GRPC_POLLSET_KICK_BROADCAST) { |
||||
GPR_TIMER_BEGIN("grpc_pollset_kick_ext.broadcast", 0); |
||||
GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0); |
||||
for (specific_worker = p->root_worker.next; |
||||
specific_worker != &p->root_worker; |
||||
specific_worker = specific_worker->next) { |
||||
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd); |
||||
} |
||||
p->kicked_without_pollers = 1; |
||||
GPR_TIMER_END("grpc_pollset_kick_ext.broadcast", 0); |
||||
} else if (gpr_tls_get(&g_current_thread_worker) != |
||||
(intptr_t)specific_worker) { |
||||
GPR_TIMER_MARK("different_thread_worker", 0); |
||||
if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) { |
||||
specific_worker->reevaluate_polling_on_wakeup = 1; |
||||
} |
||||
specific_worker->kicked_specifically = 1; |
||||
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd); |
||||
} else if ((flags & GRPC_POLLSET_CAN_KICK_SELF) != 0) { |
||||
GPR_TIMER_MARK("kick_yoself", 0); |
||||
if ((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) != 0) { |
||||
specific_worker->reevaluate_polling_on_wakeup = 1; |
||||
} |
||||
specific_worker->kicked_specifically = 1; |
||||
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd); |
||||
} |
||||
} else if (gpr_tls_get(&g_current_thread_poller) != (intptr_t)p) { |
||||
GPR_ASSERT((flags & GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) == 0); |
||||
GPR_TIMER_MARK("kick_anonymous", 0); |
||||
specific_worker = pop_front_worker(p); |
||||
if (specific_worker != NULL) { |
||||
if (gpr_tls_get(&g_current_thread_worker) == (intptr_t)specific_worker) { |
||||
GPR_TIMER_MARK("kick_anonymous_not_self", 0); |
||||
push_back_worker(p, specific_worker); |
||||
specific_worker = pop_front_worker(p); |
||||
if ((flags & GRPC_POLLSET_CAN_KICK_SELF) == 0 && |
||||
gpr_tls_get(&g_current_thread_worker) == |
||||
(intptr_t)specific_worker) { |
||||
push_back_worker(p, specific_worker); |
||||
specific_worker = NULL; |
||||
} |
||||
} |
||||
if (specific_worker != NULL) { |
||||
GPR_TIMER_MARK("finally_kick", 0); |
||||
push_back_worker(p, specific_worker); |
||||
grpc_wakeup_fd_wakeup(&specific_worker->wakeup_fd->fd); |
||||
} |
||||
} else { |
||||
GPR_TIMER_MARK("kicked_no_pollers", 0); |
||||
p->kicked_without_pollers = 1; |
||||
} |
||||
} |
||||
|
||||
GPR_TIMER_END("grpc_pollset_kick_ext", 0); |
||||
} |
||||
|
||||
void grpc_pollset_kick(grpc_pollset *p, grpc_pollset_worker *specific_worker) { |
||||
grpc_pollset_kick_ext(p, specific_worker, 0); |
||||
} |
||||
|
||||
/* global state management */ |
||||
|
||||
void grpc_pollset_global_init(void) { |
||||
gpr_tls_init(&g_current_thread_poller); |
||||
gpr_tls_init(&g_current_thread_worker); |
||||
grpc_wakeup_fd_global_init(); |
||||
grpc_wakeup_fd_init(&grpc_global_wakeup_fd); |
||||
} |
||||
|
||||
void grpc_pollset_global_shutdown(void) { |
||||
grpc_wakeup_fd_destroy(&grpc_global_wakeup_fd); |
||||
gpr_tls_destroy(&g_current_thread_poller); |
||||
gpr_tls_destroy(&g_current_thread_worker); |
||||
grpc_wakeup_fd_global_destroy(); |
||||
} |
||||
|
||||
void grpc_kick_poller(void) { grpc_wakeup_fd_wakeup(&grpc_global_wakeup_fd); } |
||||
|
||||
/* main interface */ |
||||
|
||||
static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null); |
||||
|
||||
void grpc_pollset_init(grpc_pollset *pollset, gpr_mu **mu) { |
||||
gpr_mu_init(&pollset->mu); |
||||
*mu = &pollset->mu; |
||||
pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker; |
||||
pollset->in_flight_cbs = 0; |
||||
pollset->shutting_down = 0; |
||||
pollset->called_shutdown = 0; |
||||
pollset->kicked_without_pollers = 0; |
||||
pollset->idle_jobs.head = pollset->idle_jobs.tail = NULL; |
||||
pollset->local_wakeup_cache = NULL; |
||||
pollset->kicked_without_pollers = 0; |
||||
become_basic_pollset(pollset, NULL); |
||||
} |
||||
|
||||
void grpc_pollset_destroy(grpc_pollset *pollset) { |
||||
GPR_ASSERT(pollset->in_flight_cbs == 0); |
||||
GPR_ASSERT(!grpc_pollset_has_workers(pollset)); |
||||
GPR_ASSERT(pollset->idle_jobs.head == pollset->idle_jobs.tail); |
||||
pollset->vtable->destroy(pollset); |
||||
while (pollset->local_wakeup_cache) { |
||||
grpc_cached_wakeup_fd *next = pollset->local_wakeup_cache->next; |
||||
grpc_wakeup_fd_destroy(&pollset->local_wakeup_cache->fd); |
||||
gpr_free(pollset->local_wakeup_cache); |
||||
pollset->local_wakeup_cache = next; |
||||
} |
||||
} |
||||
|
||||
void grpc_pollset_reset(grpc_pollset *pollset) { |
||||
GPR_ASSERT(pollset->shutting_down); |
||||
GPR_ASSERT(pollset->in_flight_cbs == 0); |
||||
GPR_ASSERT(!grpc_pollset_has_workers(pollset)); |
||||
GPR_ASSERT(pollset->idle_jobs.head == pollset->idle_jobs.tail); |
||||
pollset->vtable->destroy(pollset); |
||||
pollset->shutting_down = 0; |
||||
pollset->called_shutdown = 0; |
||||
pollset->kicked_without_pollers = 0; |
||||
become_basic_pollset(pollset, NULL); |
||||
} |
||||
|
||||
void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
grpc_fd *fd) { |
||||
gpr_mu_lock(&pollset->mu); |
||||
pollset->vtable->add_fd(exec_ctx, pollset, fd, 1); |
||||
/* the following (enabled only in debug) will reacquire and then release
|
||||
our lock - meaning that if the unlocking flag passed to add_fd above is |
||||
not respected, the code will deadlock (in a way that we have a chance of |
||||
debugging) */ |
||||
#ifndef NDEBUG |
||||
gpr_mu_lock(&pollset->mu); |
||||
gpr_mu_unlock(&pollset->mu); |
||||
#endif |
||||
} |
||||
|
||||
static void finish_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset) { |
||||
GPR_ASSERT(grpc_closure_list_empty(pollset->idle_jobs)); |
||||
pollset->vtable->finish_shutdown(pollset); |
||||
grpc_exec_ctx_enqueue(exec_ctx, pollset->shutdown_done, true, NULL); |
||||
} |
||||
|
||||
void grpc_pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
grpc_pollset_worker **worker_hdl, gpr_timespec now, |
||||
gpr_timespec deadline) { |
||||
grpc_pollset_worker worker; |
||||
*worker_hdl = &worker; |
||||
|
||||
/* pollset->mu already held */ |
||||
int added_worker = 0; |
||||
int locked = 1; |
||||
int queued_work = 0; |
||||
int keep_polling = 0; |
||||
GPR_TIMER_BEGIN("grpc_pollset_work", 0); |
||||
/* this must happen before we (potentially) drop pollset->mu */ |
||||
worker.next = worker.prev = NULL; |
||||
worker.reevaluate_polling_on_wakeup = 0; |
||||
if (pollset->local_wakeup_cache != NULL) { |
||||
worker.wakeup_fd = pollset->local_wakeup_cache; |
||||
pollset->local_wakeup_cache = worker.wakeup_fd->next; |
||||
} else { |
||||
worker.wakeup_fd = gpr_malloc(sizeof(*worker.wakeup_fd)); |
||||
grpc_wakeup_fd_init(&worker.wakeup_fd->fd); |
||||
} |
||||
worker.kicked_specifically = 0; |
||||
/* If there's work waiting for the pollset to be idle, and the
|
||||
pollset is idle, then do that work */ |
||||
if (!grpc_pollset_has_workers(pollset) && |
||||
!grpc_closure_list_empty(pollset->idle_jobs)) { |
||||
GPR_TIMER_MARK("grpc_pollset_work.idle_jobs", 0); |
||||
grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL); |
||||
goto done; |
||||
} |
||||
/* If we're shutting down then we don't execute any extended work */ |
||||
if (pollset->shutting_down) { |
||||
GPR_TIMER_MARK("grpc_pollset_work.shutting_down", 0); |
||||
goto done; |
||||
} |
||||
/* Give do_promote priority so we don't starve it out */ |
||||
if (pollset->in_flight_cbs) { |
||||
GPR_TIMER_MARK("grpc_pollset_work.in_flight_cbs", 0); |
||||
gpr_mu_unlock(&pollset->mu); |
||||
locked = 0; |
||||
goto done; |
||||
} |
||||
/* Start polling, and keep doing so while we're being asked to
|
||||
re-evaluate our pollers (this allows poll() based pollers to |
||||
ensure they don't miss wakeups) */ |
||||
keep_polling = 1; |
||||
while (keep_polling) { |
||||
keep_polling = 0; |
||||
if (!pollset->kicked_without_pollers) { |
||||
if (!added_worker) { |
||||
push_front_worker(pollset, &worker); |
||||
added_worker = 1; |
||||
gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker); |
||||
} |
||||
gpr_tls_set(&g_current_thread_poller, (intptr_t)pollset); |
||||
GPR_TIMER_BEGIN("maybe_work_and_unlock", 0); |
||||
pollset->vtable->maybe_work_and_unlock(exec_ctx, pollset, &worker, |
||||
deadline, now); |
||||
GPR_TIMER_END("maybe_work_and_unlock", 0); |
||||
locked = 0; |
||||
gpr_tls_set(&g_current_thread_poller, 0); |
||||
} else { |
||||
GPR_TIMER_MARK("grpc_pollset_work.kicked_without_pollers", 0); |
||||
pollset->kicked_without_pollers = 0; |
||||
} |
||||
/* Finished execution - start cleaning up.
|
||||
Note that we may arrive here from outside the enclosing while() loop. |
||||
In that case we won't loop though as we haven't added worker to the |
||||
worker list, which means nobody could ask us to re-evaluate polling). */ |
||||
done: |
||||
if (!locked) { |
||||
queued_work |= grpc_exec_ctx_flush(exec_ctx); |
||||
gpr_mu_lock(&pollset->mu); |
||||
locked = 1; |
||||
} |
||||
/* If we're forced to re-evaluate polling (via grpc_pollset_kick with
|
||||
GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP) then we land here and force |
||||
a loop */ |
||||
if (worker.reevaluate_polling_on_wakeup) { |
||||
worker.reevaluate_polling_on_wakeup = 0; |
||||
pollset->kicked_without_pollers = 0; |
||||
if (queued_work || worker.kicked_specifically) { |
||||
/* If there's queued work on the list, then set the deadline to be
|
||||
immediate so we get back out of the polling loop quickly */ |
||||
deadline = gpr_inf_past(GPR_CLOCK_MONOTONIC); |
||||
} |
||||
keep_polling = 1; |
||||
} |
||||
} |
||||
if (added_worker) { |
||||
remove_worker(pollset, &worker); |
||||
gpr_tls_set(&g_current_thread_worker, 0); |
||||
} |
||||
/* release wakeup fd to the local pool */ |
||||
worker.wakeup_fd->next = pollset->local_wakeup_cache; |
||||
pollset->local_wakeup_cache = worker.wakeup_fd; |
||||
/* check shutdown conditions */ |
||||
if (pollset->shutting_down) { |
||||
if (grpc_pollset_has_workers(pollset)) { |
||||
grpc_pollset_kick(pollset, NULL); |
||||
} else if (!pollset->called_shutdown && pollset->in_flight_cbs == 0) { |
||||
pollset->called_shutdown = 1; |
||||
gpr_mu_unlock(&pollset->mu); |
||||
finish_shutdown(exec_ctx, pollset); |
||||
grpc_exec_ctx_flush(exec_ctx); |
||||
/* Continuing to access pollset here is safe -- it is the caller's
|
||||
* responsibility to not destroy when it has outstanding calls to |
||||
* grpc_pollset_work. |
||||
* TODO(dklempner): Can we refactor the shutdown logic to avoid this? */ |
||||
gpr_mu_lock(&pollset->mu); |
||||
} else if (!grpc_closure_list_empty(pollset->idle_jobs)) { |
||||
grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL); |
||||
gpr_mu_unlock(&pollset->mu); |
||||
grpc_exec_ctx_flush(exec_ctx); |
||||
gpr_mu_lock(&pollset->mu); |
||||
} |
||||
} |
||||
*worker_hdl = NULL; |
||||
GPR_TIMER_END("grpc_pollset_work", 0); |
||||
} |
||||
|
||||
void grpc_pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
grpc_closure *closure) { |
||||
GPR_ASSERT(!pollset->shutting_down); |
||||
pollset->shutting_down = 1; |
||||
pollset->shutdown_done = closure; |
||||
grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST); |
||||
if (!grpc_pollset_has_workers(pollset)) { |
||||
grpc_exec_ctx_enqueue_list(exec_ctx, &pollset->idle_jobs, NULL); |
||||
} |
||||
if (!pollset->called_shutdown && pollset->in_flight_cbs == 0 && |
||||
!grpc_pollset_has_workers(pollset)) { |
||||
pollset->called_shutdown = 1; |
||||
finish_shutdown(exec_ctx, pollset); |
||||
} |
||||
} |
||||
|
||||
int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline, |
||||
gpr_timespec now) { |
||||
gpr_timespec timeout; |
||||
static const int64_t max_spin_polling_us = 10; |
||||
if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) { |
||||
return -1; |
||||
} |
||||
if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros( |
||||
max_spin_polling_us, |
||||
GPR_TIMESPAN))) <= 0) { |
||||
return 0; |
||||
} |
||||
timeout = gpr_time_sub(deadline, now); |
||||
return gpr_time_to_millis(gpr_time_add( |
||||
timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN))); |
||||
} |
||||
|
||||
/*
|
||||
* basic_pollset - a vtable that provides polling for zero or one file |
||||
* descriptor via poll() |
||||
*/ |
||||
|
||||
typedef struct grpc_unary_promote_args { |
||||
const grpc_pollset_vtable *original_vtable; |
||||
grpc_pollset *pollset; |
||||
grpc_fd *fd; |
||||
grpc_closure promotion_closure; |
||||
} grpc_unary_promote_args; |
||||
|
||||
static void basic_do_promote(grpc_exec_ctx *exec_ctx, void *args, |
||||
bool success) { |
||||
grpc_unary_promote_args *up_args = args; |
||||
const grpc_pollset_vtable *original_vtable = up_args->original_vtable; |
||||
grpc_pollset *pollset = up_args->pollset; |
||||
grpc_fd *fd = up_args->fd; |
||||
|
||||
/*
|
||||
* This is quite tricky. There are a number of cases to keep in mind here: |
||||
* 1. fd may have been orphaned |
||||
* 2. The pollset may no longer be a unary poller (and we can't let case #1 |
||||
* leak to other pollset types!) |
||||
* 3. pollset's fd (which may have changed) may have been orphaned |
||||
* 4. The pollset may be shutting down. |
||||
*/ |
||||
|
||||
gpr_mu_lock(&pollset->mu); |
||||
/* First we need to ensure that nobody is polling concurrently */ |
||||
GPR_ASSERT(!grpc_pollset_has_workers(pollset)); |
||||
|
||||
gpr_free(up_args); |
||||
/* At this point the pollset may no longer be a unary poller. In that case
|
||||
* we should just call the right add function and be done. */ |
||||
/* TODO(klempner): If we're not careful this could cause infinite recursion.
|
||||
* That's not a problem for now because empty_pollset has a trivial poller |
||||
* and we don't have any mechanism to unbecome multipoller. */ |
||||
pollset->in_flight_cbs--; |
||||
if (pollset->shutting_down) { |
||||
/* We don't care about this pollset anymore. */ |
||||
if (pollset->in_flight_cbs == 0 && !pollset->called_shutdown) { |
||||
pollset->called_shutdown = 1; |
||||
finish_shutdown(exec_ctx, pollset); |
||||
} |
||||
} else if (grpc_fd_is_orphaned(fd)) { |
||||
/* Don't try to add it to anything, we'll drop our ref on it below */ |
||||
} else if (pollset->vtable != original_vtable) { |
||||
pollset->vtable->add_fd(exec_ctx, pollset, fd, 0); |
||||
} else if (fd != pollset->data.ptr) { |
||||
grpc_fd *fds[2]; |
||||
fds[0] = pollset->data.ptr; |
||||
fds[1] = fd; |
||||
|
||||
if (fds[0] && !grpc_fd_is_orphaned(fds[0])) { |
||||
grpc_platform_become_multipoller(exec_ctx, pollset, fds, |
||||
GPR_ARRAY_SIZE(fds)); |
||||
GRPC_FD_UNREF(fds[0], "basicpoll"); |
||||
} else { |
||||
/* old fd is orphaned and we haven't cleaned it up until now, so remain a
|
||||
* unary poller */ |
||||
/* Note that it is possible that fds[1] is also orphaned at this point.
|
||||
* That's okay, we'll correct it at the next add or poll. */ |
||||
if (fds[0]) GRPC_FD_UNREF(fds[0], "basicpoll"); |
||||
pollset->data.ptr = fd; |
||||
GRPC_FD_REF(fd, "basicpoll"); |
||||
} |
||||
} |
||||
|
||||
gpr_mu_unlock(&pollset->mu); |
||||
|
||||
/* Matching ref in basic_pollset_add_fd */ |
||||
GRPC_FD_UNREF(fd, "basicpoll_add"); |
||||
} |
||||
|
||||
static void basic_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
grpc_fd *fd, int and_unlock_pollset) { |
||||
grpc_unary_promote_args *up_args; |
||||
GPR_ASSERT(fd); |
||||
if (fd == pollset->data.ptr) goto exit; |
||||
|
||||
if (!grpc_pollset_has_workers(pollset)) { |
||||
/* Fast path -- no in flight cbs */ |
||||
/* TODO(klempner): Comment this out and fix any test failures or establish
|
||||
* they are due to timing issues */ |
||||
grpc_fd *fds[2]; |
||||
fds[0] = pollset->data.ptr; |
||||
fds[1] = fd; |
||||
|
||||
if (fds[0] == NULL) { |
||||
pollset->data.ptr = fd; |
||||
GRPC_FD_REF(fd, "basicpoll"); |
||||
} else if (!grpc_fd_is_orphaned(fds[0])) { |
||||
grpc_platform_become_multipoller(exec_ctx, pollset, fds, |
||||
GPR_ARRAY_SIZE(fds)); |
||||
GRPC_FD_UNREF(fds[0], "basicpoll"); |
||||
} else { |
||||
/* old fd is orphaned and we haven't cleaned it up until now, so remain a
|
||||
* unary poller */ |
||||
GRPC_FD_UNREF(fds[0], "basicpoll"); |
||||
pollset->data.ptr = fd; |
||||
GRPC_FD_REF(fd, "basicpoll"); |
||||
} |
||||
goto exit; |
||||
} |
||||
|
||||
/* Now we need to promote. This needs to happen when we're not polling. Since
|
||||
* this may be called from poll, the wait needs to happen asynchronously. */ |
||||
GRPC_FD_REF(fd, "basicpoll_add"); |
||||
pollset->in_flight_cbs++; |
||||
up_args = gpr_malloc(sizeof(*up_args)); |
||||
up_args->fd = fd; |
||||
up_args->original_vtable = pollset->vtable; |
||||
up_args->pollset = pollset; |
||||
up_args->promotion_closure.cb = basic_do_promote; |
||||
up_args->promotion_closure.cb_arg = up_args; |
||||
|
||||
grpc_closure_list_add(&pollset->idle_jobs, &up_args->promotion_closure, 1); |
||||
grpc_pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST); |
||||
|
||||
exit: |
||||
if (and_unlock_pollset) { |
||||
gpr_mu_unlock(&pollset->mu); |
||||
} |
||||
} |
||||
|
||||
static void basic_pollset_maybe_work_and_unlock(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, |
||||
grpc_pollset_worker *worker, |
||||
gpr_timespec deadline, |
||||
gpr_timespec now) { |
||||
#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR) |
||||
#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR) |
||||
|
||||
struct pollfd pfd[3]; |
||||
grpc_fd *fd; |
||||
grpc_fd_watcher fd_watcher; |
||||
int timeout; |
||||
int r; |
||||
nfds_t nfds; |
||||
|
||||
fd = pollset->data.ptr; |
||||
if (fd && grpc_fd_is_orphaned(fd)) { |
||||
GRPC_FD_UNREF(fd, "basicpoll"); |
||||
fd = pollset->data.ptr = NULL; |
||||
} |
||||
timeout = grpc_poll_deadline_to_millis_timeout(deadline, now); |
||||
pfd[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd); |
||||
pfd[0].events = POLLIN; |
||||
pfd[0].revents = 0; |
||||
pfd[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd); |
||||
pfd[1].events = POLLIN; |
||||
pfd[1].revents = 0; |
||||
nfds = 2; |
||||
if (fd) { |
||||
pfd[2].fd = fd->fd; |
||||
pfd[2].revents = 0; |
||||
GRPC_FD_REF(fd, "basicpoll_begin"); |
||||
gpr_mu_unlock(&pollset->mu); |
||||
pfd[2].events = (short)grpc_fd_begin_poll(fd, pollset, worker, POLLIN, |
||||
POLLOUT, &fd_watcher); |
||||
if (pfd[2].events != 0) { |
||||
nfds++; |
||||
} |
||||
} else { |
||||
gpr_mu_unlock(&pollset->mu); |
||||
} |
||||
|
||||
/* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
|
||||
even going into the blocking annotation if possible */ |
||||
/* poll fd count (argument 2) is shortened by one if we have no events
|
||||
to poll on - such that it only includes the kicker */ |
||||
GPR_TIMER_BEGIN("poll", 0); |
||||
GRPC_SCHEDULING_START_BLOCKING_REGION; |
||||
r = grpc_poll_function(pfd, nfds, timeout); |
||||
GRPC_SCHEDULING_END_BLOCKING_REGION; |
||||
GPR_TIMER_END("poll", 0); |
||||
|
||||
if (r < 0) { |
||||
if (errno != EINTR) { |
||||
gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno)); |
||||
} |
||||
if (fd) { |
||||
grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0); |
||||
} |
||||
} else if (r == 0) { |
||||
if (fd) { |
||||
grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0); |
||||
} |
||||
} else { |
||||
if (pfd[0].revents & POLLIN_CHECK) { |
||||
grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd); |
||||
} |
||||
if (pfd[1].revents & POLLIN_CHECK) { |
||||
grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd); |
||||
} |
||||
if (nfds > 2) { |
||||
grpc_fd_end_poll(exec_ctx, &fd_watcher, pfd[2].revents & POLLIN_CHECK, |
||||
pfd[2].revents & POLLOUT_CHECK); |
||||
} else if (fd) { |
||||
grpc_fd_end_poll(exec_ctx, &fd_watcher, 0, 0); |
||||
} |
||||
} |
||||
|
||||
if (fd) { |
||||
GRPC_FD_UNREF(fd, "basicpoll_begin"); |
||||
} |
||||
} |
||||
|
||||
static void basic_pollset_destroy(grpc_pollset *pollset) { |
||||
if (pollset->data.ptr != NULL) { |
||||
GRPC_FD_UNREF(pollset->data.ptr, "basicpoll"); |
||||
pollset->data.ptr = NULL; |
||||
} |
||||
} |
||||
|
||||
static const grpc_pollset_vtable basic_pollset = { |
||||
basic_pollset_add_fd, basic_pollset_maybe_work_and_unlock, |
||||
basic_pollset_destroy, basic_pollset_destroy}; |
||||
|
||||
static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null) { |
||||
pollset->vtable = &basic_pollset; |
||||
pollset->data.ptr = fd_or_null; |
||||
if (fd_or_null != NULL) { |
||||
GRPC_FD_REF(fd_or_null, "basicpoll"); |
||||
} |
||||
} |
||||
|
||||
#endif /* GPR_POSIX_POLLSET */ |
||||
@ -1,153 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_POSIX_H |
||||
#define GRPC_CORE_LIB_IOMGR_POLLSET_POSIX_H |
||||
|
||||
#include <poll.h> |
||||
|
||||
#include <grpc/support/sync.h> |
||||
|
||||
#include "src/core/lib/iomgr/exec_ctx.h" |
||||
#include "src/core/lib/iomgr/iomgr.h" |
||||
#include "src/core/lib/iomgr/pollset.h" |
||||
#include "src/core/lib/iomgr/wakeup_fd_posix.h" |
||||
|
||||
typedef struct grpc_pollset_vtable grpc_pollset_vtable; |
||||
|
||||
/* forward declare only in this file to avoid leaking impl details via
|
||||
pollset.h; real users of grpc_fd should always include 'fd_posix.h' and not |
||||
use the struct tag */ |
||||
struct grpc_fd; |
||||
|
||||
typedef struct grpc_cached_wakeup_fd { |
||||
grpc_wakeup_fd fd; |
||||
struct grpc_cached_wakeup_fd *next; |
||||
} grpc_cached_wakeup_fd; |
||||
|
||||
struct grpc_pollset_worker { |
||||
grpc_cached_wakeup_fd *wakeup_fd; |
||||
int reevaluate_polling_on_wakeup; |
||||
int kicked_specifically; |
||||
struct grpc_pollset_worker *next; |
||||
struct grpc_pollset_worker *prev; |
||||
}; |
||||
|
||||
struct grpc_pollset { |
||||
/* pollsets under posix can mutate representation as fds are added and
|
||||
removed. |
||||
For example, we may choose a poll() based implementation on linux for |
||||
few fds, and an epoll() based implementation for many fds */ |
||||
const grpc_pollset_vtable *vtable; |
||||
gpr_mu mu; |
||||
grpc_pollset_worker root_worker; |
||||
int in_flight_cbs; |
||||
int shutting_down; |
||||
int called_shutdown; |
||||
int kicked_without_pollers; |
||||
grpc_closure *shutdown_done; |
||||
grpc_closure_list idle_jobs; |
||||
union { |
||||
int fd; |
||||
void *ptr; |
||||
} data; |
||||
/* Local cache of eventfds for workers */ |
||||
grpc_cached_wakeup_fd *local_wakeup_cache; |
||||
}; |
||||
|
||||
struct grpc_pollset_vtable { |
||||
void (*add_fd)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
struct grpc_fd *fd, int and_unlock_pollset); |
||||
void (*maybe_work_and_unlock)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
grpc_pollset_worker *worker, |
||||
gpr_timespec deadline, gpr_timespec now); |
||||
void (*finish_shutdown)(grpc_pollset *pollset); |
||||
void (*destroy)(grpc_pollset *pollset); |
||||
}; |
||||
|
||||
/* Add an fd to a pollset */ |
||||
void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, |
||||
struct grpc_fd *fd); |
||||
|
||||
/* Returns the fd to listen on for kicks */ |
||||
int grpc_kick_read_fd(grpc_pollset *p); |
||||
/* Call after polling has been kicked to leave the kicked state */ |
||||
void grpc_kick_drain(grpc_pollset *p); |
||||
|
||||
/* Convert a timespec to milliseconds:
|
||||
- very small or negative poll times are clamped to zero to do a |
||||
non-blocking poll (which becomes spin polling) |
||||
- other small values are rounded up to one millisecond |
||||
- longer than a millisecond polls are rounded up to the next nearest |
||||
millisecond to avoid spinning |
||||
- infinite timeouts are converted to -1 */ |
||||
int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline, |
||||
gpr_timespec now); |
||||
|
||||
/* Allow kick to wakeup the currently polling worker */ |
||||
#define GRPC_POLLSET_CAN_KICK_SELF 1 |
||||
/* Force the wakee to repoll when awoken */ |
||||
#define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2 |
||||
/* As per grpc_pollset_kick, with an extended set of flags (defined above)
|
||||
-- mostly for fd_posix's use. */ |
||||
void grpc_pollset_kick_ext(grpc_pollset *p, |
||||
grpc_pollset_worker *specific_worker, |
||||
uint32_t flags); |
||||
|
||||
/* turn a pollset into a multipoller: platform specific */ |
||||
typedef void (*grpc_platform_become_multipoller_type)(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, |
||||
struct grpc_fd **fds, |
||||
size_t fd_count); |
||||
extern grpc_platform_become_multipoller_type grpc_platform_become_multipoller; |
||||
|
||||
void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset *pollset, struct grpc_fd **fds, |
||||
size_t fd_count); |
||||
|
||||
/* Return 1 if the pollset has active threads in grpc_pollset_work (pollset must
|
||||
* be locked) */ |
||||
int grpc_pollset_has_workers(grpc_pollset *pollset); |
||||
|
||||
void grpc_remove_fd_from_all_epoll_sets(int fd); |
||||
|
||||
/* override to allow tests to hook poll() usage */ |
||||
/* NOTE: Any changes to grpc_poll_function must take place when the gRPC
|
||||
is certainly not doing any polling anywhere. |
||||
Otherwise, there might be a race between changing the variable and actually |
||||
doing a polling operation */ |
||||
typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int); |
||||
extern grpc_poll_function_type grpc_poll_function; |
||||
extern grpc_wakeup_fd grpc_global_wakeup_fd; |
||||
|
||||
#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_POSIX_H */ |
||||
@ -1,202 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2015, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
#include <grpc/support/port_platform.h> |
||||
|
||||
#ifdef GPR_POSIX_SOCKET |
||||
|
||||
#include <stdlib.h> |
||||
#include <string.h> |
||||
|
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/useful.h> |
||||
|
||||
#include "src/core/lib/iomgr/pollset_posix.h" |
||||
#include "src/core/lib/iomgr/pollset_set_posix.h" |
||||
|
||||
struct grpc_pollset_set { |
||||
gpr_mu mu; |
||||
|
||||
size_t pollset_count; |
||||
size_t pollset_capacity; |
||||
grpc_pollset **pollsets; |
||||
|
||||
size_t pollset_set_count; |
||||
size_t pollset_set_capacity; |
||||
struct grpc_pollset_set **pollset_sets; |
||||
|
||||
size_t fd_count; |
||||
size_t fd_capacity; |
||||
grpc_fd **fds; |
||||
}; |
||||
|
||||
grpc_pollset_set *grpc_pollset_set_create(void) { |
||||
grpc_pollset_set *pollset_set = gpr_malloc(sizeof(*pollset_set)); |
||||
memset(pollset_set, 0, sizeof(*pollset_set)); |
||||
gpr_mu_init(&pollset_set->mu); |
||||
return pollset_set; |
||||
} |
||||
|
||||
void grpc_pollset_set_destroy(grpc_pollset_set *pollset_set) { |
||||
size_t i; |
||||
gpr_mu_destroy(&pollset_set->mu); |
||||
for (i = 0; i < pollset_set->fd_count; i++) { |
||||
GRPC_FD_UNREF(pollset_set->fds[i], "pollset_set"); |
||||
} |
||||
gpr_free(pollset_set->pollsets); |
||||
gpr_free(pollset_set->pollset_sets); |
||||
gpr_free(pollset_set->fds); |
||||
gpr_free(pollset_set); |
||||
} |
||||
|
||||
void grpc_pollset_set_add_pollset(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *pollset_set, |
||||
grpc_pollset *pollset) { |
||||
size_t i, j; |
||||
gpr_mu_lock(&pollset_set->mu); |
||||
if (pollset_set->pollset_count == pollset_set->pollset_capacity) { |
||||
pollset_set->pollset_capacity = |
||||
GPR_MAX(8, 2 * pollset_set->pollset_capacity); |
||||
pollset_set->pollsets = |
||||
gpr_realloc(pollset_set->pollsets, pollset_set->pollset_capacity * |
||||
sizeof(*pollset_set->pollsets)); |
||||
} |
||||
pollset_set->pollsets[pollset_set->pollset_count++] = pollset; |
||||
for (i = 0, j = 0; i < pollset_set->fd_count; i++) { |
||||
if (grpc_fd_is_orphaned(pollset_set->fds[i])) { |
||||
GRPC_FD_UNREF(pollset_set->fds[i], "pollset_set"); |
||||
} else { |
||||
grpc_pollset_add_fd(exec_ctx, pollset, pollset_set->fds[i]); |
||||
pollset_set->fds[j++] = pollset_set->fds[i]; |
||||
} |
||||
} |
||||
pollset_set->fd_count = j; |
||||
gpr_mu_unlock(&pollset_set->mu); |
||||
} |
||||
|
||||
void grpc_pollset_set_del_pollset(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *pollset_set, |
||||
grpc_pollset *pollset) { |
||||
size_t i; |
||||
gpr_mu_lock(&pollset_set->mu); |
||||
for (i = 0; i < pollset_set->pollset_count; i++) { |
||||
if (pollset_set->pollsets[i] == pollset) { |
||||
pollset_set->pollset_count--; |
||||
GPR_SWAP(grpc_pollset *, pollset_set->pollsets[i], |
||||
pollset_set->pollsets[pollset_set->pollset_count]); |
||||
break; |
||||
} |
||||
} |
||||
gpr_mu_unlock(&pollset_set->mu); |
||||
} |
||||
|
||||
void grpc_pollset_set_add_pollset_set(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *bag, |
||||
grpc_pollset_set *item) { |
||||
size_t i, j; |
||||
gpr_mu_lock(&bag->mu); |
||||
if (bag->pollset_set_count == bag->pollset_set_capacity) { |
||||
bag->pollset_set_capacity = GPR_MAX(8, 2 * bag->pollset_set_capacity); |
||||
bag->pollset_sets = |
||||
gpr_realloc(bag->pollset_sets, |
||||
bag->pollset_set_capacity * sizeof(*bag->pollset_sets)); |
||||
} |
||||
bag->pollset_sets[bag->pollset_set_count++] = item; |
||||
for (i = 0, j = 0; i < bag->fd_count; i++) { |
||||
if (grpc_fd_is_orphaned(bag->fds[i])) { |
||||
GRPC_FD_UNREF(bag->fds[i], "pollset_set"); |
||||
} else { |
||||
grpc_pollset_set_add_fd(exec_ctx, item, bag->fds[i]); |
||||
bag->fds[j++] = bag->fds[i]; |
||||
} |
||||
} |
||||
bag->fd_count = j; |
||||
gpr_mu_unlock(&bag->mu); |
||||
} |
||||
|
||||
void grpc_pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *bag, |
||||
grpc_pollset_set *item) { |
||||
size_t i; |
||||
gpr_mu_lock(&bag->mu); |
||||
for (i = 0; i < bag->pollset_set_count; i++) { |
||||
if (bag->pollset_sets[i] == item) { |
||||
bag->pollset_set_count--; |
||||
GPR_SWAP(grpc_pollset_set *, bag->pollset_sets[i], |
||||
bag->pollset_sets[bag->pollset_set_count]); |
||||
break; |
||||
} |
||||
} |
||||
gpr_mu_unlock(&bag->mu); |
||||
} |
||||
|
||||
void grpc_pollset_set_add_fd(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *pollset_set, grpc_fd *fd) { |
||||
size_t i; |
||||
gpr_mu_lock(&pollset_set->mu); |
||||
if (pollset_set->fd_count == pollset_set->fd_capacity) { |
||||
pollset_set->fd_capacity = GPR_MAX(8, 2 * pollset_set->fd_capacity); |
||||
pollset_set->fds = gpr_realloc( |
||||
pollset_set->fds, pollset_set->fd_capacity * sizeof(*pollset_set->fds)); |
||||
} |
||||
GRPC_FD_REF(fd, "pollset_set"); |
||||
pollset_set->fds[pollset_set->fd_count++] = fd; |
||||
for (i = 0; i < pollset_set->pollset_count; i++) { |
||||
grpc_pollset_add_fd(exec_ctx, pollset_set->pollsets[i], fd); |
||||
} |
||||
for (i = 0; i < pollset_set->pollset_set_count; i++) { |
||||
grpc_pollset_set_add_fd(exec_ctx, pollset_set->pollset_sets[i], fd); |
||||
} |
||||
gpr_mu_unlock(&pollset_set->mu); |
||||
} |
||||
|
||||
void grpc_pollset_set_del_fd(grpc_exec_ctx *exec_ctx, |
||||
grpc_pollset_set *pollset_set, grpc_fd *fd) { |
||||
size_t i; |
||||
gpr_mu_lock(&pollset_set->mu); |
||||
for (i = 0; i < pollset_set->fd_count; i++) { |
||||
if (pollset_set->fds[i] == fd) { |
||||
pollset_set->fd_count--; |
||||
GPR_SWAP(grpc_fd *, pollset_set->fds[i], |
||||
pollset_set->fds[pollset_set->fd_count]); |
||||
GRPC_FD_UNREF(fd, "pollset_set"); |
||||
break; |
||||
} |
||||
} |
||||
for (i = 0; i < pollset_set->pollset_set_count; i++) { |
||||
grpc_pollset_set_del_fd(exec_ctx, pollset_set->pollset_sets[i], fd); |
||||
} |
||||
gpr_mu_unlock(&pollset_set->mu); |
||||
} |
||||
|
||||
#endif /* GPR_POSIX_SOCKET */ |
||||
@ -0,0 +1,97 @@ |
||||
#region Copyright notice and license |
||||
|
||||
// Copyright 2016, Google Inc. |
||||
// All rights reserved. |
||||
// |
||||
// Redistribution and use in source and binary forms, with or without |
||||
// modification, are permitted provided that the following conditions are |
||||
// met: |
||||
// |
||||
// * Redistributions of source code must retain the above copyright |
||||
// notice, this list of conditions and the following disclaimer. |
||||
// * Redistributions in binary form must reproduce the above |
||||
// copyright notice, this list of conditions and the following disclaimer |
||||
// in the documentation and/or other materials provided with the |
||||
// distribution. |
||||
// * Neither the name of Google Inc. nor the names of its |
||||
// contributors may be used to endorse or promote products derived from |
||||
// this software without specific prior written permission. |
||||
// |
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
|
||||
#endregion |
||||
|
||||
using System; |
||||
using System.Collections.Generic; |
||||
using System.Diagnostics; |
||||
using System.Linq; |
||||
using System.Threading; |
||||
using System.Threading.Tasks; |
||||
|
||||
using Grpc.Core; |
||||
using Grpc.Core.Internal; |
||||
using Grpc.Core.Utils; |
||||
|
||||
using NUnit.Framework; |
||||
|
||||
namespace Grpc.Core.Tests |
||||
{ |
||||
public class HalfcloseTest |
||||
{ |
||||
MockServiceHelper helper; |
||||
Server server; |
||||
Channel channel; |
||||
|
||||
[SetUp] |
||||
public void Init() |
||||
{ |
||||
helper = new MockServiceHelper(); |
||||
|
||||
server = helper.GetServer(); |
||||
server.Start(); |
||||
channel = helper.GetChannel(); |
||||
} |
||||
|
||||
[TearDown] |
||||
public void Cleanup() |
||||
{ |
||||
channel.ShutdownAsync().Wait(); |
||||
server.ShutdownAsync().Wait(); |
||||
} |
||||
|
||||
/// <summary> |
||||
/// For client streaming and duplex streaming calls, if server does a full close |
||||
/// before we halfclose the request stream, an attempt to halfclose |
||||
/// (complete the request stream) shouldn't be treated as an error. |
||||
/// </summary> |
||||
[Test] |
||||
public async Task HalfcloseAfterFullclose_ClientStreamingCall() |
||||
{ |
||||
helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) => |
||||
{ |
||||
return "PASS"; |
||||
}); |
||||
|
||||
var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall()); |
||||
// make sure server has fullclosed on us |
||||
Assert.AreEqual("PASS", await call.ResponseAsync); |
||||
|
||||
// sending close from client should be still fine because server can finish |
||||
// the call anytime and we cannot do anything about it on the client side. |
||||
await call.RequestStream.CompleteAsync(); |
||||
|
||||
// Second attempt to close from client is not allowed. |
||||
Assert.Throws(typeof(InvalidOperationException), async () => await call.RequestStream.CompleteAsync()); |
||||
} |
||||
} |
||||
} |
||||
@ -0,0 +1,126 @@ |
||||
/* |
||||
* |
||||
* Copyright 2016, Google Inc. |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
||||
* |
||||
* * Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
||||
* in the documentation and/or other materials provided with the |
||||
* distribution. |
||||
* * Neither the name of Google Inc. nor the names of its |
||||
* contributors may be used to endorse or promote products derived from |
||||
* this software without specific prior written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
* |
||||
*/ |
||||
|
||||
'use strict'; |
||||
|
||||
var _ = require('lodash'); |
||||
|
||||
var grpc = require('../../..'); |
||||
|
||||
var interop_client = require('../interop/interop_client'); |
||||
var MetricsServer = require('./metrics_server'); |
||||
|
||||
var running; |
||||
|
||||
var metrics_server; |
||||
|
||||
var start_time; |
||||
var query_count; |
||||
|
||||
function makeCall(client, test_cases) { |
||||
if (!running) { |
||||
return; |
||||
} |
||||
var test_case = test_cases[_.random(test_cases.length - 1)]; |
||||
interop_client.test_cases[test_case].run(client, function() { |
||||
query_count += 1; |
||||
makeCall(client, test_cases); |
||||
}); |
||||
} |
||||
|
||||
function makeCalls(client, test_cases, parallel_calls_per_channel) { |
||||
_.times(parallel_calls_per_channel, function() { |
||||
makeCall(client, test_cases); |
||||
}); |
||||
} |
||||
|
||||
function getQps() { |
||||
var diff = process.hrtime(start_time); |
||||
var seconds = diff[0] + diff[1] / 1e9; |
||||
return {long_value: query_count / seconds}; |
||||
} |
||||
|
||||
function start(server_addresses, test_cases, channels_per_server, |
||||
parallel_calls_per_channel, metrics_port) { |
||||
running = true; |
||||
/* Assuming that we are not calling unimplemented_method. The client class |
||||
* used by empty_unary is (currently) the client class used by every interop |
||||
* test except unimplemented_method */ |
||||
var Client = interop_client.test_cases.empty_unary.Client; |
||||
/* Make channels_per_server clients connecting to each server address */ |
||||
var channels = _.flatten(_.times( |
||||
channels_per_server, _.partial(_.map, server_addresses, function(address) { |
||||
return new Client(address, grpc.credentials.createInsecure()); |
||||
}))); |
||||
metrics_server = new MetricsServer(metrics_port); |
||||
metrics_server.registerGauge('qps', getQps); |
||||
start_time = process.hrtime(); |
||||
query_count = 0; |
||||
_.each(channels, _.partial(makeCalls, _, test_cases, |
||||
parallel_calls_per_channel)); |
||||
metrics_server.start(); |
||||
} |
||||
|
||||
function stop() { |
||||
running = false; |
||||
metrics_server.shutdown(); |
||||
console.log('QPS: ' + getQps().long_value); |
||||
} |
||||
|
||||
function main() { |
||||
var parseArgs = require('minimist'); |
||||
var argv = parseArgs(process.argv, { |
||||
string: ['server_addresses', 'test_cases', 'metrics_port'], |
||||
default: {'server_addresses': 'localhost:8080', |
||||
'test_duration-secs': -1, |
||||
'num_channels_per_server': 1, |
||||
'num_stubs_per_channel': 1, |
||||
'metrics_port': '8081'} |
||||
}); |
||||
var server_addresses = argv.server_addresses.split(','); |
||||
/* Generate an array of test cases, where the number of instances of each name |
||||
* corresponds to the number given in the argument. |
||||
* e.g. 'empty_unary:1,large_unary:2' => |
||||
* ['empty_unary', 'large_unary', 'large_unary'] */ |
||||
var test_cases = _.flatten(_.map(argv.test_cases.split(','), function(value) { |
||||
var split = value.split(':'); |
||||
return _.times(split[1], _.constant(split[0])); |
||||
})); |
||||
start(server_addresses, test_cases, argv.num_channels_per_server, |
||||
argv.num_stubs_per_channel, argv.metrics_port); |
||||
if (argv['test_duration-secs'] > -1) { |
||||
setTimeout(stop, argv['test_duration-secs'] * 1000); |
||||
} |
||||
} |
||||
|
||||
main(); |
||||
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Reference in new issue