mirror of
https://github.com/ioacademy-jikim/debugging
synced 2025-06-08 08:26:14 +00:00
70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
/* Stress test for the --free-is-write command-line option. */
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#include <assert.h>
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#include <limits.h>
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#include <pthread.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define MALLOC_SIZE 22816
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#define THREAD_COUNT 10
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#define MALLOC_COUNT 1000
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static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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// 'mutex' protects 'count'.
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static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
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static unsigned count;
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void* thread_func(void* arg)
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{
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unsigned i;
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for (i = 0; i < MALLOC_COUNT; ++i) {
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void* ptr;
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ptr = malloc(MALLOC_SIZE);
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memset(ptr, 0, MALLOC_SIZE);
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free(ptr);
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}
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pthread_mutex_lock(&mutex);
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++count;
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pthread_cond_signal(&cond);
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pthread_mutex_unlock(&mutex);
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return 0;
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}
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int main(int argc, char **argv)
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{
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pthread_t thread[THREAD_COUNT];
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int result;
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int i;
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for (i = 0; i < THREAD_COUNT; i++) {
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN + 4096);
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result = pthread_create(&thread[i], &attr, thread_func, 0);
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pthread_attr_destroy(&attr);
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assert(result == 0);
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}
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pthread_mutex_lock(&mutex);
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while (count < THREAD_COUNT && pthread_cond_wait(&cond, &mutex) == 0)
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;
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pthread_mutex_unlock(&mutex);
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for (i = 0; i < THREAD_COUNT; i++)
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pthread_join(thread[i], 0);
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fflush(stdout);
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fprintf(stderr, "Done.\n");
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return 0;
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}
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