| /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| |
| /* This test does not pretend to be cross-platform. */ |
| #ifndef _WIN32 |
| |
| #include "uv.h" |
| #include "task.h" |
| |
| #include <errno.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| |
| #define NUM_SIGNAL_HANDLING_THREADS 25 |
| #define NUM_LOOP_CREATING_THREADS 10 |
| |
| |
| static uv_sem_t sem; |
| static uv_mutex_t counter_lock; |
| static volatile int stop = 0; |
| |
| static volatile int signal1_cb_counter = 0; |
| static volatile int signal2_cb_counter = 0; |
| static volatile int loop_creation_counter = 0; |
| |
| |
| static void increment_counter(volatile int* counter) { |
| uv_mutex_lock(&counter_lock); |
| ++(*counter); |
| uv_mutex_unlock(&counter_lock); |
| } |
| |
| |
| static void signal1_cb(uv_signal_t* handle, int signum) { |
| ASSERT(signum == SIGUSR1); |
| increment_counter(&signal1_cb_counter); |
| uv_signal_stop(handle); |
| } |
| |
| |
| static void signal2_cb(uv_signal_t* handle, int signum) { |
| ASSERT(signum == SIGUSR2); |
| increment_counter(&signal2_cb_counter); |
| uv_signal_stop(handle); |
| } |
| |
| |
| static void signal_handling_worker(void* context) { |
| uintptr_t mask = (uintptr_t) context; |
| uv_loop_t* loop; |
| uv_signal_t signal1a; |
| uv_signal_t signal1b; |
| uv_signal_t signal2; |
| int r; |
| |
| loop = uv_loop_new(); |
| ASSERT(loop != NULL); |
| |
| /* Setup the signal watchers and start them. */ |
| if (mask & SIGUSR1) { |
| r = uv_signal_init(loop, &signal1a); |
| ASSERT(r == 0); |
| r = uv_signal_start(&signal1a, signal1_cb, SIGUSR1); |
| ASSERT(r == 0); |
| r = uv_signal_init(loop, &signal1b); |
| ASSERT(r == 0); |
| r = uv_signal_start(&signal1b, signal1_cb, SIGUSR1); |
| ASSERT(r == 0); |
| } |
| if (mask & SIGUSR2) { |
| r = uv_signal_init(loop, &signal2); |
| ASSERT(r == 0); |
| r = uv_signal_start(&signal2, signal2_cb, SIGUSR2); |
| ASSERT(r == 0); |
| } |
| |
| /* Signal watchers are now set up. */ |
| uv_sem_post(&sem); |
| |
| /* Wait for all signals. The signal callbacks stop the watcher, so uv_run |
| * will return when all signal watchers caught a signal. |
| */ |
| r = uv_run(loop, UV_RUN_DEFAULT); |
| ASSERT(r == 0); |
| |
| /* Restart the signal watchers. */ |
| if (mask & SIGUSR1) { |
| r = uv_signal_start(&signal1a, signal1_cb, SIGUSR1); |
| ASSERT(r == 0); |
| r = uv_signal_start(&signal1b, signal1_cb, SIGUSR1); |
| ASSERT(r == 0); |
| } |
| if (mask & SIGUSR2) { |
| r = uv_signal_start(&signal2, signal2_cb, SIGUSR2); |
| ASSERT(r == 0); |
| } |
| |
| /* Wait for signals once more. */ |
| uv_sem_post(&sem); |
| |
| r = uv_run(loop, UV_RUN_DEFAULT); |
| ASSERT(r == 0); |
| |
| /* Close the watchers. */ |
| if (mask & SIGUSR1) { |
| uv_close((uv_handle_t*) &signal1a, NULL); |
| uv_close((uv_handle_t*) &signal1b, NULL); |
| } |
| if (mask & SIGUSR2) { |
| uv_close((uv_handle_t*) &signal2, NULL); |
| } |
| |
| /* Wait for the signal watchers to close. */ |
| r = uv_run(loop, UV_RUN_DEFAULT); |
| ASSERT(r == 0); |
| |
| uv_loop_delete(loop); |
| } |
| |
| |
| static void signal_unexpected_cb(uv_signal_t* handle, int signum) { |
| ASSERT(0 && "signal_unexpected_cb should never be called"); |
| } |
| |
| |
| static void loop_creating_worker(void* context) { |
| (void) context; |
| |
| do { |
| uv_loop_t* loop; |
| uv_signal_t signal; |
| int r; |
| |
| loop = uv_loop_new(); |
| ASSERT(loop != NULL); |
| |
| r = uv_signal_init(loop, &signal); |
| ASSERT(r == 0); |
| |
| r = uv_signal_start(&signal, signal_unexpected_cb, SIGTERM); |
| ASSERT(r == 0); |
| |
| uv_close((uv_handle_t*) &signal, NULL); |
| |
| r = uv_run(loop, UV_RUN_DEFAULT); |
| ASSERT(r == 0); |
| |
| uv_loop_delete(loop); |
| |
| increment_counter(&loop_creation_counter); |
| } while (!stop); |
| } |
| |
| |
| TEST_IMPL(signal_multiple_loops) { |
| int i, r; |
| uv_thread_t loop_creating_threads[NUM_LOOP_CREATING_THREADS]; |
| uv_thread_t signal_handling_threads[NUM_SIGNAL_HANDLING_THREADS]; |
| sigset_t sigset; |
| |
| r = uv_sem_init(&sem, 0); |
| ASSERT(r == 0); |
| |
| r = uv_mutex_init(&counter_lock); |
| ASSERT(r == 0); |
| |
| /* Create a couple of threads that create a destroy loops continuously. */ |
| for (i = 0; i < NUM_LOOP_CREATING_THREADS; i++) { |
| r = uv_thread_create(&loop_creating_threads[i], |
| loop_creating_worker, |
| NULL); |
| ASSERT(r == 0); |
| } |
| |
| /* Create a couple of threads that actually handle signals. */ |
| for (i = 0; i < NUM_SIGNAL_HANDLING_THREADS; i++) { |
| uintptr_t mask; |
| |
| switch (i % 3) { |
| case 0: mask = SIGUSR1; break; |
| case 1: mask = SIGUSR2; break; |
| case 2: mask = SIGUSR1 | SIGUSR2; break; |
| } |
| |
| r = uv_thread_create(&signal_handling_threads[i], |
| signal_handling_worker, |
| (void*) mask); |
| ASSERT(r == 0); |
| } |
| |
| /* Wait until all threads have started and set up their signal watchers. */ |
| for (i = 0; i < NUM_SIGNAL_HANDLING_THREADS; i++) |
| uv_sem_wait(&sem); |
| |
| r = kill(getpid(), SIGUSR1); |
| ASSERT(r == 0); |
| r = kill(getpid(), SIGUSR2); |
| ASSERT(r == 0); |
| |
| /* Wait for all threads to handle these signals. */ |
| for (i = 0; i < NUM_SIGNAL_HANDLING_THREADS; i++) |
| uv_sem_wait(&sem); |
| |
| /* Block all signals to this thread, so we are sure that from here the signal |
| * handler runs in another thread. This is is more likely to catch thread and |
| * signal safety issues if there are any. |
| */ |
| sigfillset(&sigset); |
| pthread_sigmask(SIG_SETMASK, &sigset, NULL); |
| |
| r = kill(getpid(), SIGUSR1); |
| ASSERT(r == 0); |
| r = kill(getpid(), SIGUSR2); |
| ASSERT(r == 0); |
| |
| /* Wait for all signal handling threads to exit. */ |
| for (i = 0; i < NUM_SIGNAL_HANDLING_THREADS; i++) { |
| r = uv_thread_join(&signal_handling_threads[i]); |
| ASSERT(r == 0); |
| } |
| |
| /* Tell all loop creating threads to stop. */ |
| stop = 1; |
| |
| /* Wait for all loop creating threads to exit. */ |
| for (i = 0; i < NUM_LOOP_CREATING_THREADS; i++) { |
| r = uv_thread_join(&loop_creating_threads[i]); |
| ASSERT(r == 0); |
| } |
| |
| printf("signal1_cb calls: %d\n", signal1_cb_counter); |
| printf("signal2_cb calls: %d\n", signal2_cb_counter); |
| printf("loops created and destroyed: %d\n", loop_creation_counter); |
| |
| ASSERT(signal1_cb_counter == 4 * NUM_SIGNAL_HANDLING_THREADS); |
| ASSERT(signal2_cb_counter == 2 * NUM_SIGNAL_HANDLING_THREADS); |
| /* We don't know exactly how much loops will be created and destroyed, but at |
| * least there should be 1 for every loop creating thread. |
| */ |
| ASSERT(loop_creation_counter >= NUM_LOOP_CREATING_THREADS); |
| |
| MAKE_VALGRIND_HAPPY(); |
| return 0; |
| } |
| |
| #endif /* !_WIN32 */ |