xref: /aosp_15_r20/external/compiler-rt/test/tsan/bench_single_writer.cc (revision 7c3d14c8b49c529e04be81a3ce6f5cc23712e4c6) 
1*7c3d14c8STreehugger Robot // RUN: %clangxx_tsan %s -o %t
2*7c3d14c8STreehugger Robot // RUN: %run %t 2>&1 | FileCheck %s
3*7c3d14c8STreehugger Robot 
4*7c3d14c8STreehugger Robot // bench.h needs pthread barriers which are not available on OS X
5*7c3d14c8STreehugger Robot // UNSUPPORTED: darwin
6*7c3d14c8STreehugger Robot 
7*7c3d14c8STreehugger Robot #include "bench.h"
8*7c3d14c8STreehugger Robot 
9*7c3d14c8STreehugger Robot int x;
10*7c3d14c8STreehugger Robot 
thread(int tid)11*7c3d14c8STreehugger Robot void thread(int tid) {
12*7c3d14c8STreehugger Robot   if (tid == 0) {
13*7c3d14c8STreehugger Robot     for (int i = 0; i < bench_niter; i++)
14*7c3d14c8STreehugger Robot       __atomic_store_n(&x, 0, __ATOMIC_RELEASE);
15*7c3d14c8STreehugger Robot   } else {
16*7c3d14c8STreehugger Robot     for (int i = 0; i < bench_niter; i++)
17*7c3d14c8STreehugger Robot       __atomic_load_n(&x, __ATOMIC_ACQUIRE);
18*7c3d14c8STreehugger Robot   }
19*7c3d14c8STreehugger Robot }
20*7c3d14c8STreehugger Robot 
bench()21*7c3d14c8STreehugger Robot void bench() {
22*7c3d14c8STreehugger Robot   start_thread_group(bench_nthread, thread);
23*7c3d14c8STreehugger Robot }
24*7c3d14c8STreehugger Robot 
25*7c3d14c8STreehugger Robot // CHECK: DONE
26*7c3d14c8STreehugger Robot 
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