[TSan][libdispatch] Change test to have two simultaneous timers

Change test semantics by waiting for both timer callbacks at the end
instead of serializing operations: start/wait timer 1 then 2.

Reviewed By: kubamracek

Differential Revision: https://reviews.llvm.org/D60476

llvm-svn: 358204

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler-rt/test/tsan/Darwin/gcd-after.mm b/compiler-rt/test/tsan/Darwin/gcd-after.mm
index 38c2effcaf8..59281e76d6d 100644
--- a/compiler-rt/test/tsan/Darwin/gcd-after.mm
+++ b/compiler-rt/test/tsan/Darwin/gcd-after.mm
@@ -27,12 +27,12 @@ int main(int argc, const char *argv[]) {
 
     dispatch_semaphore_signal(done);
   });
-  dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
 
   my_global2 = 10;
   dispatch_after_f(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_MSEC)), q, NULL, &callback);
 
   dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
+  dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
   fprintf(stderr, "done\n");
   return 0;
 }