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| // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include "java.h"
jptr varaddr;
jptr lockaddr;
void *Thread(void *p) {
while (__atomic_load_n((int*)lockaddr, __ATOMIC_RELAXED) == 0)
usleep(1000); // spin-wait
__tsan_java_acquire(lockaddr);
*(int*)varaddr = 42;
return 0;
}
int main() {
barrier_init(&barrier, 2);
int const kHeapSize = 1024 * 1024;
jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
__tsan_java_init(jheap, kHeapSize);
const int kBlockSize = 16;
__tsan_java_alloc(jheap, kBlockSize);
varaddr = jheap;
lockaddr = jheap + 8;
pthread_t th;
pthread_create(&th, 0, Thread, 0);
*(int*)varaddr = 43;
__tsan_java_release(lockaddr);
__atomic_store_n((int*)lockaddr, 1, __ATOMIC_RELAXED);
pthread_join(th, 0);
*(int*)lockaddr = 0;
pthread_create(&th, 0, Thread, 0);
*(int*)varaddr = 43;
__tsan_java_release_store(lockaddr);
__atomic_store_n((int*)lockaddr, 1, __ATOMIC_RELAXED);
pthread_join(th, 0);
__tsan_java_free(jheap, kBlockSize);
fprintf(stderr, "DONE\n");
return __tsan_java_fini();
}
// CHECK-NOT: WARNING: ThreadSanitizer: data race
// CHECK: DONE
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