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Update debug_external.cc testcase to use TSan-invisible barriers to reduce flakiness. 

llvm-svn: 298707
This commit is contained in:
Kuba Mracek 2017-03-24 16:37:02 +00:00
parent a7e1007c27
commit d8789fdf0b
1 changed files with 5 additions and 0 deletions
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5
compiler-rt/test/tsan/Darwin/debug_external.cc
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@ -6,6 +6,8 @@
#include <stdlib.h>
#include <string.h>
#include "../test.h"
extern "C" {
void __tsan_on_report(void *report);
int __tsan_get_report_loc(void *report, unsigned long idx, const char **type,
@ -20,11 +22,13 @@ void __tsan_external_assign_tag(void *addr, void *tag);
}
void *Thread(void *arg) {
barrier_wait(&barrier);
*((long *)arg) = 42;
return NULL;
}
int main() {
barrier_init(&barrier, 2);
void *tag = __tsan_external_register_tag("MyObject");
long *obj = (long *)malloc(sizeof(long));
fprintf(stderr, "obj = %p\n", obj);
@ -34,6 +38,7 @@ int main() {
pthread_t t;
pthread_create(&t, 0, Thread, obj);
*obj = 41;
barrier_wait(&barrier);
pthread_join(t, 0);
fprintf(stderr, "Done.\n");
return 0;