tsan: add support for idle threads

llvm-svn: 177292

diff --git a/compiler-rt/lib/tsan/rtl/tsan_mman.cc b/compiler-rt/lib/tsan/rtl/tsan_mman.cc
index 1d887c6..7c7b89c 100644 (file)
--- a/compiler-rt/lib/tsan/rtl/tsan_mman.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_mman.cc
@@ -234,4 +234,9 @@ uptr __tsan_get_allocated_size(void *p) {
   MBlock *b = (MBlock*)allocator()->GetMetaData(p);
   return b->size;
 }
+
+void __tsan_on_thread_idle() {
+  ThreadState *thr = cur_thread();
+  allocator()->SwallowCache(&thr->alloc_cache);
+}
 }  // extern "C"