mirror of https://github.com/grpc/grpc.git
Craig Tiller
8 years ago
parent
f43c2e533e
commit
fe5f497f77
12 changed files with 423 additions and 13 deletions
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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 "test/core/util/passthru_endpoint.h" |
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#include <inttypes.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/string_util.h> |
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#include <grpc/support/useful.h> |
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#include "src/core/lib/iomgr/sockaddr.h" |
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#include "src/core/lib/slice/slice_internal.h" |
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typedef struct { |
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grpc_endpoint base; |
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grpc_endpoint *wrapped; |
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gpr_mu mu; |
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grpc_slice_buffer write_buffer; |
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grpc_slice_buffer writing_buffer; |
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grpc_error *error; |
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bool writing; |
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} trickle_endpoint; |
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static void te_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_slice_buffer *slices, grpc_closure *cb) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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grpc_endpoint_read(exec_ctx, te->wrapped, slices, cb); |
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} |
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static void te_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_slice_buffer *slices, grpc_closure *cb) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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for (size_t i = 0; i < slices->count; i++) { |
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grpc_slice_ref_internal(slices->slices[i]); |
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} |
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grpc_slice_buffer_addn(&te->write_buffer, slices->slices, slices->count); |
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gpr_mu_lock(&te->mu); |
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grpc_closure_sched(exec_ctx, cb, GRPC_ERROR_REF(te->error)); |
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gpr_mu_unlock(&te->mu); |
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} |
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static grpc_workqueue *te_get_workqueue(grpc_endpoint *ep) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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return grpc_endpoint_get_workqueue(te->wrapped); |
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} |
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static void te_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_pollset *pollset) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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grpc_endpoint_add_to_pollset(exec_ctx, te->wrapped, pollset); |
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} |
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static void te_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_pollset_set *pollset_set) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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grpc_endpoint_add_to_pollset_set(exec_ctx, te->wrapped, pollset_set); |
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} |
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static void te_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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grpc_error *why) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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gpr_mu_lock(&te->mu); |
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if (te->error == GRPC_ERROR_NONE) { |
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te->error = GRPC_ERROR_REF(why); |
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} |
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gpr_mu_unlock(&te->mu); |
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grpc_endpoint_shutdown(exec_ctx, te->wrapped, why); |
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} |
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static void te_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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grpc_endpoint_destroy(exec_ctx, te->wrapped); |
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gpr_mu_destroy(&te->mu); |
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grpc_slice_buffer_destroy_internal(exec_ctx, &te->write_buffer); |
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grpc_slice_buffer_destroy_internal(exec_ctx, &te->writing_buffer); |
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GRPC_ERROR_UNREF(te->error); |
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gpr_free(te); |
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} |
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static grpc_resource_user *te_get_resource_user(grpc_endpoint *ep) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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return grpc_endpoint_get_resource_user(te->wrapped); |
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} |
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static char *te_get_peer(grpc_endpoint *ep) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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return grpc_endpoint_get_peer(te->wrapped); |
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} |
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static int te_get_fd(grpc_endpoint *ep) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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return grpc_endpoint_get_fd(te->wrapped); |
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} |
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static void te_finish_write(grpc_exec_ctx *exec_ctx, void *arg, |
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grpc_error *error) { |
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trickle_endpoint *te = arg; |
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gpr_mu_lock(&te->mu); |
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te->writing = false; |
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grpc_slice_buffer_reset_and_unref(&te->writing_buffer); |
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gpr_mu_unlock(&te->mu); |
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} |
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static const grpc_endpoint_vtable vtable = {te_read, |
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te_write, |
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te_get_workqueue, |
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te_add_to_pollset, |
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te_add_to_pollset_set, |
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te_shutdown, |
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te_destroy, |
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te_get_resource_user, |
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te_get_peer, |
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te_get_fd}; |
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grpc_endpoint *grpc_trickle_endpoint_create(grpc_endpoint *wrap) { |
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trickle_endpoint *te = gpr_malloc(sizeof(*te)); |
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te->base.vtable = &vtable; |
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te->wrapped = wrap; |
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gpr_mu_init(&te->mu); |
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grpc_slice_buffer_init(&te->write_buffer); |
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grpc_slice_buffer_init(&te->writing_buffer); |
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te->error = GRPC_ERROR_NONE; |
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te->writing = false; |
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return &te->base; |
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} |
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size_t grpc_trickle_endpoint_trickle(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
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size_t bytes) { |
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trickle_endpoint *te = (trickle_endpoint *)ep; |
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gpr_mu_lock(&te->mu); |
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if (bytes > 0 && !te->writing) { |
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grpc_slice_buffer_move_first(&te->write_buffer, |
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GPR_MIN(bytes, te->write_buffer.length), |
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&te->writing_buffer); |
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te->writing = true; |
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grpc_endpoint_write( |
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exec_ctx, te->wrapped, &te->writing_buffer, |
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grpc_closure_create(te_finish_write, te, grpc_schedule_on_exec_ctx)); |
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} |
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size_t backlog = te->write_buffer.length; |
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gpr_mu_unlock(&te->mu); |
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return backlog; |
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} |
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@ -0,0 +1,45 @@ |
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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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#ifndef TRICKLE_ENDPOINT_H |
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#define TRICKLE_ENDPOINT_H |
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#include "src/core/lib/iomgr/endpoint.h" |
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grpc_endpoint *grpc_trickle_endpoint_create(grpc_endpoint *wrap); |
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/* Allow up to \a bytes through the endpoint. Returns the new backlog. */ |
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size_t grpc_trickle_endpoint_trickle(grpc_exec_ctx *exec_ctx, |
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grpc_endpoint *endpoint, size_t bytes); |
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#endif |
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