| /* Stress test for the --free-is-write command-line option. */ |
| |
| #include <pthread.h> |
| #include <assert.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <pthread.h> |
| #include <string.h> |
| |
| #define MALLOC_SIZE 22816 |
| #define THREAD_COUNT 10 |
| #define MALLOC_COUNT 1000 |
| |
| static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
| // 'mutex' protects 'count'. |
| static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; |
| static unsigned count; |
| |
| void* thread_func(void* arg) |
| { |
| unsigned i; |
| |
| for (i = 0; i < MALLOC_COUNT; ++i) { |
| void* ptr; |
| |
| ptr = malloc(MALLOC_SIZE); |
| memset(ptr, 0, MALLOC_SIZE); |
| free(ptr); |
| } |
| |
| pthread_mutex_lock(&mutex); |
| ++count; |
| pthread_cond_signal(&cond); |
| pthread_mutex_unlock(&mutex); |
| |
| return 0; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| pthread_t thread[THREAD_COUNT]; |
| int result; |
| int i; |
| |
| for (i = 0; i < THREAD_COUNT; i++) { |
| result = pthread_create(&thread[i], 0, thread_func, 0); |
| assert(result == 0); |
| } |
| |
| pthread_mutex_lock(&mutex); |
| while (count < THREAD_COUNT && pthread_cond_wait(&cond, &mutex) == 0) |
| ; |
| pthread_mutex_unlock(&mutex); |
| |
| for (i = 0; i < THREAD_COUNT; i++) |
| pthread_join(thread[i], 0); |
| |
| fflush(stdout); |
| |
| fprintf(stderr, "Done.\n"); |
| |
| return 0; |
| } |