mirror of https://github.com/grpc/grpc.git
Yuchen Zeng
8 years ago
commit
c007a6c879
112 changed files with 2640 additions and 450 deletions
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#Overview |
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This directory contains source code for gRPC protocol buffer compiler (*protoc*) plugins. Along with `protoc`, |
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these plugins are used to generate gRPC client and server stubs from `.proto` files. |
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/*
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* |
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* Copyright 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 |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* 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 |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* 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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#include <grpc/support/port_platform.h> |
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#ifdef GPR_POSIX_WAKEUP_FD |
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#include "src/core/lib/iomgr/wakeup_fd_cv.h" |
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#include <errno.h> |
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#include <string.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/sync.h> |
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#include <grpc/support/thd.h> |
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#include <grpc/support/time.h> |
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#include <grpc/support/useful.h> |
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#define MAX_TABLE_RESIZE 256 |
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extern cv_fd_table g_cvfds; |
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static grpc_error* cv_fd_init(grpc_wakeup_fd* fd_info) { |
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unsigned int i, newsize; |
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int idx; |
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gpr_mu_lock(&g_cvfds.mu); |
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if (!g_cvfds.free_fds) { |
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newsize = GPR_MIN(g_cvfds.size * 2, g_cvfds.size + MAX_TABLE_RESIZE); |
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g_cvfds.cvfds = gpr_realloc(g_cvfds.cvfds, sizeof(fd_node) * newsize); |
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for (i = g_cvfds.size; i < newsize; i++) { |
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g_cvfds.cvfds[i].is_set = 0; |
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g_cvfds.cvfds[i].cvs = NULL; |
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g_cvfds.cvfds[i].next_free = g_cvfds.free_fds; |
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g_cvfds.free_fds = &g_cvfds.cvfds[i]; |
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} |
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g_cvfds.size = newsize; |
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} |
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idx = (int)(g_cvfds.free_fds - g_cvfds.cvfds); |
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g_cvfds.free_fds = g_cvfds.free_fds->next_free; |
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g_cvfds.cvfds[idx].cvs = NULL; |
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g_cvfds.cvfds[idx].is_set = 0; |
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fd_info->read_fd = IDX_TO_FD(idx); |
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fd_info->write_fd = -1; |
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gpr_mu_unlock(&g_cvfds.mu); |
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return GRPC_ERROR_NONE; |
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} |
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static grpc_error* cv_fd_wakeup(grpc_wakeup_fd* fd_info) { |
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cv_node* cvn; |
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gpr_mu_lock(&g_cvfds.mu); |
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g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].is_set = 1; |
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cvn = g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].cvs; |
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while (cvn) { |
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gpr_cv_signal(cvn->cv); |
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cvn = cvn->next; |
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} |
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gpr_mu_unlock(&g_cvfds.mu); |
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return GRPC_ERROR_NONE; |
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} |
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static grpc_error* cv_fd_consume(grpc_wakeup_fd* fd_info) { |
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gpr_mu_lock(&g_cvfds.mu); |
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g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].is_set = 0; |
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gpr_mu_unlock(&g_cvfds.mu); |
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return GRPC_ERROR_NONE; |
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} |
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static void cv_fd_destroy(grpc_wakeup_fd* fd_info) { |
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if (fd_info->read_fd == 0) { |
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return; |
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} |
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gpr_mu_lock(&g_cvfds.mu); |
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// Assert that there are no active pollers
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GPR_ASSERT(!g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].cvs); |
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g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)].next_free = g_cvfds.free_fds; |
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g_cvfds.free_fds = &g_cvfds.cvfds[FD_TO_IDX(fd_info->read_fd)]; |
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gpr_mu_unlock(&g_cvfds.mu); |
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} |
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static int cv_check_availability(void) { return 1; } |
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const grpc_wakeup_fd_vtable grpc_cv_wakeup_fd_vtable = { |
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cv_fd_init, cv_fd_consume, cv_fd_wakeup, cv_fd_destroy, |
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cv_check_availability}; |
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#endif /* GPR_POSIX_WAKUP_FD */ |
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@ -0,0 +1,80 @@ |
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/*
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* |
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* Copyright 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 |
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|
* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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|
* * Redistributions of source code must retain the above copyright |
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|
* notice, this list of conditions and the following disclaimer. |
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|
* * Redistributions in binary form must reproduce the above |
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|
* copyright notice, this list of conditions and the following disclaimer |
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|
* in the documentation and/or other materials provided with the |
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|
* distribution. |
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|
* * Neither the name of Google Inc. nor the names of its |
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|
* contributors may be used to endorse or promote products derived from |
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|
* 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 |
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|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
* 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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* wakeup_fd_cv uses condition variables to implement wakeup fds. |
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* |
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* It is intended for use only in cases when eventfd() and pipe() are not |
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* available. It can only be used with the "poll" engine. |
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* |
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* Implementation: |
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* A global table of cv wakeup fds is mantained. A cv wakeup fd is a negative |
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* file descriptor. poll() is then run in a background thread with only the |
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* real socket fds while we wait on a condition variable trigged by either the |
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* poll() completion or a wakeup_fd() call. |
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* |
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*/ |
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#ifndef GRPC_CORE_LIB_IOMGR_WAKEUP_FD_CV_H |
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#define GRPC_CORE_LIB_IOMGR_WAKEUP_FD_CV_H |
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#include <grpc/support/sync.h> |
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#include "src/core/lib/iomgr/ev_posix.h" |
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#define FD_TO_IDX(fd) (-(fd)-1) |
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#define IDX_TO_FD(idx) (-(idx)-1) |
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typedef struct cv_node { |
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gpr_cv* cv; |
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struct cv_node* next; |
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} cv_node; |
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typedef struct fd_node { |
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int is_set; |
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cv_node* cvs; |
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struct fd_node* next_free; |
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} fd_node; |
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typedef struct cv_fd_table { |
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gpr_mu mu; |
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int pollcount; |
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int shutdown; |
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gpr_cv shutdown_complete; |
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fd_node* cvfds; |
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fd_node* free_fds; |
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unsigned int size; |
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grpc_poll_function_type poll; |
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} cv_fd_table; |
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#endif /* GRPC_CORE_LIB_IOMGR_WAKEUP_FD_CV_H */ |
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/*
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* |
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* Copyright 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 |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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|
* notice, this list of conditions and the following disclaimer. |
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|
* * Redistributions in binary form must reproduce the above |
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|
* copyright notice, this list of conditions and the following disclaimer |
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|
* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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|
* contributors may be used to endorse or promote products derived from |
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|
* 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 |
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|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
* 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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#include <pthread.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/thd.h> |
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#include <grpc/support/time.h> |
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#include <grpc/support/useful.h> |
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#include "src/core/lib/iomgr/ev_posix.h" |
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#include "src/core/lib/iomgr/iomgr_posix.h" |
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#include "src/core/lib/support/env.h" |
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typedef struct poll_args { |
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struct pollfd *fds; |
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nfds_t nfds; |
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int timeout; |
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int result; |
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} poll_args; |
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gpr_cv poll_cv; |
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gpr_mu poll_mu; |
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static int socket_event = 0; |
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// Trigger a "socket" POLLIN in mock_poll()
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void trigger_socket_event() { |
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gpr_mu_lock(&poll_mu); |
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socket_event = 1; |
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gpr_cv_broadcast(&poll_cv); |
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gpr_mu_unlock(&poll_mu); |
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} |
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void reset_socket_event() { |
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gpr_mu_lock(&poll_mu); |
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socket_event = 0; |
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gpr_mu_unlock(&poll_mu); |
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} |
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// Mocks posix poll() function
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int mock_poll(struct pollfd *fds, nfds_t nfds, int timeout) { |
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int res = 0; |
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gpr_timespec poll_time; |
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gpr_mu_lock(&poll_mu); |
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GPR_ASSERT(nfds == 3); |
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GPR_ASSERT(fds[0].fd == 20); |
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GPR_ASSERT(fds[1].fd == 30); |
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GPR_ASSERT(fds[2].fd == 50); |
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GPR_ASSERT(fds[0].events == (POLLIN | POLLHUP)); |
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GPR_ASSERT(fds[1].events == (POLLIN | POLLHUP)); |
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GPR_ASSERT(fds[2].events == POLLIN); |
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if (timeout < 0) { |
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poll_time = gpr_inf_future(GPR_CLOCK_REALTIME); |
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} else { |
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poll_time = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
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gpr_time_from_millis(timeout, GPR_TIMESPAN)); |
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} |
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if (socket_event || !gpr_cv_wait(&poll_cv, &poll_mu, poll_time)) { |
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fds[0].revents = POLLIN; |
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res = 1; |
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} |
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gpr_mu_unlock(&poll_mu); |
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return res; |
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} |
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void background_poll(void *args) { |
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poll_args *pargs = (poll_args *)args; |
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pargs->result = grpc_poll_function(pargs->fds, pargs->nfds, pargs->timeout); |
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} |
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void test_many_fds(void) { |
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int i; |
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grpc_wakeup_fd fd[1000]; |
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for (i = 0; i < 1000; i++) { |
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GPR_ASSERT(grpc_wakeup_fd_init(&fd[i]) == GRPC_ERROR_NONE); |
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} |
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for (i = 0; i < 1000; i++) { |
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grpc_wakeup_fd_destroy(&fd[i]); |
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} |
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} |
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void test_poll_cv_trigger(void) { |
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grpc_wakeup_fd cvfd1, cvfd2, cvfd3; |
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struct pollfd pfds[6]; |
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poll_args pargs; |
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gpr_thd_id t_id; |
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gpr_thd_options opt; |
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GPR_ASSERT(grpc_wakeup_fd_init(&cvfd1) == GRPC_ERROR_NONE); |
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GPR_ASSERT(grpc_wakeup_fd_init(&cvfd2) == GRPC_ERROR_NONE); |
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GPR_ASSERT(grpc_wakeup_fd_init(&cvfd3) == GRPC_ERROR_NONE); |
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GPR_ASSERT(cvfd1.read_fd < 0); |
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GPR_ASSERT(cvfd2.read_fd < 0); |
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GPR_ASSERT(cvfd3.read_fd < 0); |
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GPR_ASSERT(cvfd1.read_fd != cvfd2.read_fd); |
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GPR_ASSERT(cvfd2.read_fd != cvfd3.read_fd); |
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GPR_ASSERT(cvfd1.read_fd != cvfd3.read_fd); |
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pfds[0].fd = cvfd1.read_fd; |
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pfds[1].fd = cvfd2.read_fd; |
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pfds[2].fd = 20; |
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pfds[3].fd = 30; |
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pfds[4].fd = cvfd3.read_fd; |
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pfds[5].fd = 50; |
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pfds[0].events = 0; |
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pfds[1].events = POLLIN; |
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pfds[2].events = POLLIN | POLLHUP; |
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pfds[3].events = POLLIN | POLLHUP; |
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pfds[4].events = POLLIN; |
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pfds[5].events = POLLIN; |
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pargs.fds = pfds; |
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pargs.nfds = 6; |
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pargs.timeout = 1000; |
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pargs.result = -2; |
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opt = gpr_thd_options_default(); |
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gpr_thd_options_set_joinable(&opt); |
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gpr_thd_new(&t_id, &background_poll, &pargs, &opt); |
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// Wakeup wakeup_fd not listening for events
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GPR_ASSERT(grpc_wakeup_fd_wakeup(&cvfd1) == GRPC_ERROR_NONE); |
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gpr_thd_join(t_id); |
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GPR_ASSERT(pargs.result == 0); |
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GPR_ASSERT(pfds[0].revents == 0); |
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GPR_ASSERT(pfds[1].revents == 0); |
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GPR_ASSERT(pfds[2].revents == 0); |
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GPR_ASSERT(pfds[3].revents == 0); |
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GPR_ASSERT(pfds[4].revents == 0); |
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GPR_ASSERT(pfds[5].revents == 0); |
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// Pollin on socket fd
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pargs.timeout = -1; |
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pargs.result = -2; |
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gpr_thd_new(&t_id, &background_poll, &pargs, &opt); |
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trigger_socket_event(); |
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gpr_thd_join(t_id); |
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GPR_ASSERT(pargs.result == 1); |
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GPR_ASSERT(pfds[0].revents == 0); |
||||||
|
GPR_ASSERT(pfds[1].revents == 0); |
||||||
|
GPR_ASSERT(pfds[2].revents == POLLIN); |
||||||
|
GPR_ASSERT(pfds[3].revents == 0); |
||||||
|
GPR_ASSERT(pfds[4].revents == 0); |
||||||
|
GPR_ASSERT(pfds[5].revents == 0); |
||||||
|
|
||||||
|
// Pollin on wakeup fd
|
||||||
|
reset_socket_event(); |
||||||
|
pargs.result = -2; |
||||||
|
gpr_thd_new(&t_id, &background_poll, &pargs, &opt); |
||||||
|
GPR_ASSERT(grpc_wakeup_fd_wakeup(&cvfd2) == GRPC_ERROR_NONE); |
||||||
|
gpr_thd_join(t_id); |
||||||
|
|
||||||
|
GPR_ASSERT(pargs.result == 1); |
||||||
|
GPR_ASSERT(pfds[0].revents == 0); |
||||||
|
GPR_ASSERT(pfds[1].revents == POLLIN); |
||||||
|
GPR_ASSERT(pfds[2].revents == 0); |
||||||
|
GPR_ASSERT(pfds[3].revents == 0); |
||||||
|
GPR_ASSERT(pfds[4].revents == 0); |
||||||
|
GPR_ASSERT(pfds[5].revents == 0); |
||||||
|
|
||||||
|
// Pollin on wakeup fd + socket fd
|
||||||
|
trigger_socket_event(); |
||||||
|
pargs.result = -2; |
||||||
|
gpr_thd_new(&t_id, &background_poll, &pargs, &opt); |
||||||
|
gpr_thd_join(t_id); |
||||||
|
|
||||||
|
GPR_ASSERT(pargs.result == 2); |
||||||
|
GPR_ASSERT(pfds[0].revents == 0); |
||||||
|
GPR_ASSERT(pfds[1].revents == POLLIN); |
||||||
|
GPR_ASSERT(pfds[2].revents == POLLIN); |
||||||
|
GPR_ASSERT(pfds[3].revents == 0); |
||||||
|
GPR_ASSERT(pfds[4].revents == 0); |
||||||
|
GPR_ASSERT(pfds[5].revents == 0); |
||||||
|
|
||||||
|
// No Events
|
||||||
|
pargs.result = -2; |
||||||
|
pargs.timeout = 1000; |
||||||
|
reset_socket_event(); |
||||||
|
GPR_ASSERT(grpc_wakeup_fd_consume_wakeup(&cvfd1) == GRPC_ERROR_NONE); |
||||||
|
GPR_ASSERT(grpc_wakeup_fd_consume_wakeup(&cvfd2) == GRPC_ERROR_NONE); |
||||||
|
gpr_thd_new(&t_id, &background_poll, &pargs, &opt); |
||||||
|
gpr_thd_join(t_id); |
||||||
|
|
||||||
|
GPR_ASSERT(pargs.result == 0); |
||||||
|
GPR_ASSERT(pfds[0].revents == 0); |
||||||
|
GPR_ASSERT(pfds[1].revents == 0); |
||||||
|
GPR_ASSERT(pfds[2].revents == 0); |
||||||
|
GPR_ASSERT(pfds[3].revents == 0); |
||||||
|
GPR_ASSERT(pfds[4].revents == 0); |
||||||
|
GPR_ASSERT(pfds[5].revents == 0); |
||||||
|
} |
||||||
|
|
||||||
|
int main(int argc, char **argv) { |
||||||
|
gpr_setenv("GRPC_POLL_STRATEGY", "poll-cv"); |
||||||
|
grpc_poll_function = &mock_poll; |
||||||
|
gpr_mu_init(&poll_mu); |
||||||
|
gpr_cv_init(&poll_cv); |
||||||
|
|
||||||
|
grpc_iomgr_platform_init(); |
||||||
|
test_many_fds(); |
||||||
|
grpc_iomgr_platform_shutdown(); |
||||||
|
|
||||||
|
grpc_iomgr_platform_init(); |
||||||
|
test_poll_cv_trigger(); |
||||||
|
grpc_iomgr_platform_shutdown(); |
||||||
|
return 0; |
||||||
|
} |
||||||
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Reference in new issue