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// RUN: %clangxx_asan -O0 %s -pthread -o %t && %run %t
// RUN: %clangxx_asan -O2 %s -pthread -o %t && %run %t
// REQUIRES: stable-runtime
#include <assert.h>
#include <pthread.h>
#include <sanitizer/allocator_interface.h>
#include <stdio.h>
#include <stdlib.h>
const size_t kLargeAlloc = 1UL << 20;
void* allocate(void *arg) {
volatile void *ptr = malloc(kLargeAlloc);
free((void*)ptr);
return 0;
}
void* check_stats(void *arg) {
assert(__sanitizer_get_current_allocated_bytes() >= 0);
return 0;
}
int main() {
size_t used_mem = __sanitizer_get_current_allocated_bytes();
printf("Before: %zu\n", used_mem);
const int kNumIterations = 1000;
for (int iter = 0; iter < kNumIterations; iter++) {
pthread_t thr[4];
for (int j = 0; j < 4; j++) {
assert(0 ==
pthread_create(&thr[j], 0, (j < 2) ? allocate : check_stats, 0));
}
for (int j = 0; j < 4; j++)
assert(0 == pthread_join(thr[j], 0));
used_mem = __sanitizer_get_current_allocated_bytes();
if (used_mem > kLargeAlloc) {
printf("After iteration %d: %zu\n", iter, used_mem);
return 1;
}
}
printf("Success after %d iterations\n", kNumIterations);
return 0;
}
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