| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| #include "src/core/lib/iomgr/port.h" |
| |
| /* This test only relevant on linux systems where epoll() is available */ |
| #ifdef GRPC_LINUX_EPOLL |
| #include "src/core/lib/iomgr/ev_epollsig_linux.h" |
| #include "src/core/lib/iomgr/ev_posix.h" |
| |
| #include <errno.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/thd.h> |
| #include <grpc/support/useful.h> |
| |
| #include "src/core/lib/iomgr/iomgr.h" |
| #include "test/core/util/test_config.h" |
| |
| typedef struct test_pollset { |
| grpc_pollset* pollset; |
| gpr_mu* mu; |
| } test_pollset; |
| |
| typedef struct test_fd { |
| int inner_fd; |
| grpc_fd* fd; |
| } test_fd; |
| |
| /* num_fds should be an even number */ |
| static void test_fd_init(test_fd* tfds, int* fds, int num_fds) { |
| int i; |
| int r; |
| |
| /* Create some dummy file descriptors. Currently using pipe file descriptors |
| * for this test but we could use any other type of file descriptors. Also, |
| * since pipe() used in this test creates two fds in each call, num_fds should |
| * be an even number */ |
| GPR_ASSERT((num_fds % 2) == 0); |
| for (i = 0; i < num_fds; i = i + 2) { |
| r = pipe(fds + i); |
| if (r != 0) { |
| gpr_log(GPR_ERROR, "Error in creating pipe. %d (%s)", errno, |
| strerror(errno)); |
| return; |
| } |
| } |
| |
| for (i = 0; i < num_fds; i++) { |
| tfds[i].inner_fd = fds[i]; |
| tfds[i].fd = grpc_fd_create(fds[i], "test_fd"); |
| } |
| } |
| |
| static void test_fd_cleanup(test_fd* tfds, int num_fds) { |
| int release_fd; |
| int i; |
| |
| for (i = 0; i < num_fds; i++) { |
| grpc_fd_shutdown(tfds[i].fd, |
| GRPC_ERROR_CREATE_FROM_STATIC_STRING("test_fd_cleanup")); |
| grpc_core::ExecCtx::Get()->Flush(); |
| |
| grpc_fd_orphan(tfds[i].fd, nullptr, &release_fd, false /* already_closed */, |
| "test_fd_cleanup"); |
| grpc_core::ExecCtx::Get()->Flush(); |
| |
| GPR_ASSERT(release_fd == tfds[i].inner_fd); |
| close(tfds[i].inner_fd); |
| } |
| } |
| |
| static void test_pollset_init(test_pollset* pollsets, int num_pollsets) { |
| int i; |
| for (i = 0; i < num_pollsets; i++) { |
| pollsets[i].pollset = |
| static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size())); |
| grpc_pollset_init(pollsets[i].pollset, &pollsets[i].mu); |
| } |
| } |
| |
| static void destroy_pollset(void* p, grpc_error* error) { |
| grpc_pollset_destroy((grpc_pollset*)p); |
| } |
| |
| static void test_pollset_cleanup(test_pollset* pollsets, int num_pollsets) { |
| grpc_closure destroyed; |
| int i; |
| |
| for (i = 0; i < num_pollsets; i++) { |
| GRPC_CLOSURE_INIT(&destroyed, destroy_pollset, pollsets[i].pollset, |
| grpc_schedule_on_exec_ctx); |
| grpc_pollset_shutdown(pollsets[i].pollset, &destroyed); |
| |
| grpc_core::ExecCtx::Get()->Flush(); |
| gpr_free(pollsets[i].pollset); |
| } |
| } |
| |
| /* |
| * Cases to test: |
| * case 1) Polling islands of both fd and pollset are NULL |
| * case 2) Polling island of fd is NULL but that of pollset is not-NULL |
| * case 3) Polling island of fd is not-NULL but that of pollset is NULL |
| * case 4) Polling islands of both fd and pollset are not-NULL and: |
| * case 4.1) Polling islands of fd and pollset are equal |
| * case 4.2) Polling islands of fd and pollset are NOT-equal (This results |
| * in a merge) |
| * */ |
| |
| #define NUM_FDS 8 |
| #define NUM_POLLSETS 4 |
| |
| static void test_add_fd_to_pollset() { |
| grpc_core::ExecCtx exec_ctx; |
| test_fd tfds[NUM_FDS]; |
| int fds[NUM_FDS]; |
| test_pollset pollsets[NUM_POLLSETS]; |
| void* expected_pi = nullptr; |
| int i; |
| |
| test_fd_init(tfds, fds, NUM_FDS); |
| test_pollset_init(pollsets, NUM_POLLSETS); |
| |
| /*Step 1. |
| * Create three polling islands (This will exercise test case 1 and 2) with |
| * the following configuration: |
| * polling island 0 = { fds:0,1,2, pollsets:0} |
| * polling island 1 = { fds:3,4, pollsets:1} |
| * polling island 2 = { fds:5,6,7 pollsets:2} |
| * |
| *Step 2. |
| * Add pollset 3 to polling island 0 (by adding fds 0 and 1 to pollset 3) |
| * (This will exercise test cases 3 and 4.1). The configuration becomes: |
| * polling island 0 = { fds:0,1,2, pollsets:0,3} <<< pollset 3 added here |
| * polling island 1 = { fds:3,4, pollsets:1} |
| * polling island 2 = { fds:5,6,7 pollsets:2} |
| * |
| *Step 3. |
| * Merge polling islands 0 and 1 by adding fd 0 to pollset 1 (This will |
| * exercise test case 4.2). The configuration becomes: |
| * polling island (merged) = {fds: 0,1,2,3,4, pollsets: 0,1,3} |
| * polling island 2 = {fds: 5,6,7 pollsets: 2} |
| * |
| *Step 4. |
| * Finally do one more merge by adding fd 3 to pollset 2. |
| * polling island (merged) = {fds: 0,1,2,3,4,5,6,7, pollsets: 0,1,2,3} |
| */ |
| |
| /* == Step 1 == */ |
| for (i = 0; i <= 2; i++) { |
| grpc_pollset_add_fd(pollsets[0].pollset, tfds[i].fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| } |
| |
| for (i = 3; i <= 4; i++) { |
| grpc_pollset_add_fd(pollsets[1].pollset, tfds[i].fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| } |
| |
| for (i = 5; i <= 7; i++) { |
| grpc_pollset_add_fd(pollsets[2].pollset, tfds[i].fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| } |
| |
| /* == Step 2 == */ |
| for (i = 0; i <= 1; i++) { |
| grpc_pollset_add_fd(pollsets[3].pollset, tfds[i].fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| } |
| |
| /* == Step 3 == */ |
| grpc_pollset_add_fd(pollsets[1].pollset, tfds[0].fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| |
| /* == Step 4 == */ |
| grpc_pollset_add_fd(pollsets[2].pollset, tfds[3].fd); |
| grpc_core::ExecCtx::Get()->Flush(); |
| |
| /* All polling islands are merged at this point */ |
| |
| /* Compare Fd:0's polling island with that of all other Fds */ |
| expected_pi = grpc_fd_get_polling_island(tfds[0].fd); |
| for (i = 1; i < NUM_FDS; i++) { |
| GPR_ASSERT(grpc_are_polling_islands_equal( |
| expected_pi, grpc_fd_get_polling_island(tfds[i].fd))); |
| } |
| |
| /* Compare Fd:0's polling island with that of all other pollsets */ |
| for (i = 0; i < NUM_POLLSETS; i++) { |
| GPR_ASSERT(grpc_are_polling_islands_equal( |
| expected_pi, grpc_pollset_get_polling_island(pollsets[i].pollset))); |
| } |
| |
| test_fd_cleanup(tfds, NUM_FDS); |
| test_pollset_cleanup(pollsets, NUM_POLLSETS); |
| } |
| |
| #undef NUM_FDS |
| #undef NUM_POLLSETS |
| |
| typedef struct threading_shared { |
| gpr_mu* mu; |
| grpc_pollset* pollset; |
| grpc_wakeup_fd* wakeup_fd; |
| grpc_fd* wakeup_desc; |
| grpc_closure on_wakeup; |
| int wakeups; |
| } threading_shared; |
| |
| static __thread int thread_wakeups = 0; |
| |
| static void test_threading_loop(void* arg) { |
| threading_shared* shared = static_cast<threading_shared*>(arg); |
| while (thread_wakeups < 1000000) { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_pollset_worker* worker; |
| gpr_mu_lock(shared->mu); |
| GPR_ASSERT(GRPC_LOG_IF_ERROR( |
| "pollset_work", |
| grpc_pollset_work(shared->pollset, &worker, GRPC_MILLIS_INF_FUTURE))); |
| gpr_mu_unlock(shared->mu); |
| } |
| } |
| |
| static void test_threading_wakeup(void* arg, grpc_error* error) { |
| threading_shared* shared = static_cast<threading_shared*>(arg); |
| ++shared->wakeups; |
| ++thread_wakeups; |
| if (error == GRPC_ERROR_NONE) { |
| GPR_ASSERT(GRPC_LOG_IF_ERROR( |
| "consume_wakeup", grpc_wakeup_fd_consume_wakeup(shared->wakeup_fd))); |
| grpc_fd_notify_on_read(shared->wakeup_desc, &shared->on_wakeup); |
| GPR_ASSERT(GRPC_LOG_IF_ERROR("wakeup_next", |
| grpc_wakeup_fd_wakeup(shared->wakeup_fd))); |
| } |
| } |
| |
| static void test_threading(void) { |
| threading_shared shared; |
| shared.pollset = static_cast<grpc_pollset*>(gpr_zalloc(grpc_pollset_size())); |
| grpc_pollset_init(shared.pollset, &shared.mu); |
| |
| gpr_thd_id thds[10]; |
| for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) { |
| gpr_thd_options opt = gpr_thd_options_default(); |
| gpr_thd_options_set_joinable(&opt); |
| gpr_thd_new(&thds[i], "test_thread", test_threading_loop, &shared, &opt); |
| } |
| grpc_wakeup_fd fd; |
| GPR_ASSERT(GRPC_LOG_IF_ERROR("wakeup_fd_init", grpc_wakeup_fd_init(&fd))); |
| shared.wakeup_fd = &fd; |
| shared.wakeup_desc = grpc_fd_create(fd.read_fd, "wakeup"); |
| shared.wakeups = 0; |
| { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_pollset_add_fd(shared.pollset, shared.wakeup_desc); |
| grpc_fd_notify_on_read( |
| shared.wakeup_desc, |
| GRPC_CLOSURE_INIT(&shared.on_wakeup, test_threading_wakeup, &shared, |
| grpc_schedule_on_exec_ctx)); |
| } |
| GPR_ASSERT(GRPC_LOG_IF_ERROR("wakeup_first", |
| grpc_wakeup_fd_wakeup(shared.wakeup_fd))); |
| for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) { |
| gpr_thd_join(thds[i]); |
| } |
| fd.read_fd = 0; |
| grpc_wakeup_fd_destroy(&fd); |
| { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_fd_shutdown(shared.wakeup_desc, GRPC_ERROR_CANCELLED); |
| grpc_fd_orphan(shared.wakeup_desc, nullptr, nullptr, |
| false /* already_closed */, "done"); |
| grpc_pollset_shutdown(shared.pollset, |
| GRPC_CLOSURE_CREATE(destroy_pollset, shared.pollset, |
| grpc_schedule_on_exec_ctx)); |
| } |
| gpr_free(shared.pollset); |
| } |
| |
| int main(int argc, char** argv) { |
| const char* poll_strategy = nullptr; |
| grpc_test_init(argc, argv); |
| grpc_init(); |
| { |
| grpc_core::ExecCtx exec_ctx; |
| |
| poll_strategy = grpc_get_poll_strategy_name(); |
| if (poll_strategy != nullptr && strcmp(poll_strategy, "epollsig") == 0) { |
| test_add_fd_to_pollset(); |
| test_threading(); |
| } else { |
| gpr_log(GPR_INFO, |
| "Skipping the test. The test is only relevant for 'epollsig' " |
| "strategy. and the current strategy is: '%s'", |
| poll_strategy); |
| } |
| } |
| |
| grpc_shutdown(); |
| return 0; |
| } |
| #else /* defined(GRPC_LINUX_EPOLL) */ |
| int main(int argc, char** argv) { return 0; } |
| #endif /* !defined(GRPC_LINUX_EPOLL) */ |