bart | f64ff03 | 2011-03-12 14:02:06 +0000 | [diff] [blame] | 1 | /* Stress test for the --free-is-write command-line option. */ |
| 2 | |
| 3 | #include <pthread.h> |
| 4 | #include <assert.h> |
| 5 | #include <unistd.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdio.h> |
| 8 | #include <pthread.h> |
| 9 | #include <string.h> |
| 10 | |
| 11 | #define MALLOC_SIZE 22816 |
| 12 | #define THREAD_COUNT 10 |
| 13 | #define MALLOC_COUNT 1000 |
| 14 | |
| 15 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
| 16 | // 'mutex' protects 'count'. |
| 17 | static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; |
| 18 | static unsigned count; |
| 19 | |
| 20 | void* thread_func(void* arg) |
| 21 | { |
| 22 | unsigned i; |
| 23 | |
| 24 | for (i = 0; i < MALLOC_COUNT; ++i) { |
| 25 | void* ptr; |
| 26 | |
| 27 | ptr = malloc(MALLOC_SIZE); |
| 28 | memset(ptr, 0, MALLOC_SIZE); |
| 29 | free(ptr); |
| 30 | } |
| 31 | |
| 32 | pthread_mutex_lock(&mutex); |
| 33 | ++count; |
| 34 | pthread_cond_signal(&cond); |
| 35 | pthread_mutex_unlock(&mutex); |
| 36 | |
| 37 | return 0; |
| 38 | } |
| 39 | |
| 40 | int main(int argc, char **argv) |
| 41 | { |
| 42 | pthread_t thread[THREAD_COUNT]; |
| 43 | int result; |
| 44 | int i; |
| 45 | |
| 46 | for (i = 0; i < THREAD_COUNT; i++) { |
| 47 | result = pthread_create(&thread[i], 0, thread_func, 0); |
| 48 | assert(result == 0); |
| 49 | } |
| 50 | |
| 51 | pthread_mutex_lock(&mutex); |
| 52 | while (count < THREAD_COUNT && pthread_cond_wait(&cond, &mutex) == 0) |
| 53 | ; |
| 54 | pthread_mutex_unlock(&mutex); |
| 55 | |
| 56 | for (i = 0; i < THREAD_COUNT; i++) |
| 57 | pthread_join(thread[i], 0); |
| 58 | |
| 59 | fflush(stdout); |
| 60 | |
| 61 | fprintf(stderr, "Done.\n"); |
| 62 | |
| 63 | return 0; |
| 64 | } |