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// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include "test.h"
#include <errno.h>
#include <sys/mman.h>
void *SubWorker(void *arg) {
(void)arg;
const int kMmapSize = 65536;
for (int i = 0; i < 500; i++) {
int *ptr = (int*)mmap(0, kMmapSize, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
*ptr = 42;
munmap(ptr, kMmapSize);
}
return 0;
}
void *Worker1(void *arg) {
(void)arg;
pthread_t th[4];
for (int i = 0; i < 4; i++)
pthread_create(&th[i], 0, SubWorker, 0);
for (int i = 0; i < 4; i++)
pthread_join(th[i], 0);
return 0;
}
void *Worker(void *arg) {
(void)arg;
pthread_t th[4];
for (int i = 0; i < 4; i++)
pthread_create(&th[i], 0, Worker1, 0);
for (int i = 0; i < 4; i++)
pthread_join(th[i], 0);
return 0;
}
int main() {
pthread_t th[4];
for (int i = 0; i < 4; i++)
pthread_create(&th[i], 0, Worker, 0);
for (int i = 0; i < 4; i++)
pthread_join(th[i], 0);
fprintf(stderr, "DONE\n");
}
// CHECK: DONE
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