48 lines
1.0 KiB
C++
48 lines
1.0 KiB
C++
// 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
|