[tsan] Expose __tsan_ignore_thread_begin and __tsan_ignore_thread_end in TSan interface

This patch is needed to implement the function attribute that disable TSan checking at run time.

Differential Revision: https://reviews.llvm.org/D25859

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@286658 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 11 insertions, 0 deletions

diff --git a/lib/tsan/rtl/tsan_interface.h b/lib/tsan/rtl/tsan_interface.h
index 9e234e958..17171a2a9 100644
--- a/lib/tsan/rtl/tsan_interface.h
+++ b/lib/tsan/rtl/tsan_interface.h
@@ -73,6 +73,9 @@ void __tsan_vptr_update(void **vptr_p, void *new_val);
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_entry(void *call_pc);
 SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_exit();
 
+SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_begin();
+SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_end();
+
 SANITIZER_INTERFACE_ATTRIBUTE
 void __tsan_read_range(void *addr, unsigned long size);  // NOLINT
 SANITIZER_INTERFACE_ATTRIBUTE
diff --git a/lib/tsan/rtl/tsan_interface_inl.h b/lib/tsan/rtl/tsan_interface_inl.h
index 8852aa348..fff83ee17 100644
--- a/lib/tsan/rtl/tsan_interface_inl.h
+++ b/lib/tsan/rtl/tsan_interface_inl.h
@@ -108,6 +108,14 @@ void __tsan_func_exit() {
   FuncExit(cur_thread());
 }
 
+void __tsan_ignore_thread_begin() {
+  ThreadIgnoreBegin(cur_thread(), CALLERPC);
+}
+
+void __tsan_ignore_thread_end() {
+  ThreadIgnoreEnd(cur_thread(), CALLERPC);
+}
+
 void __tsan_read_range(void *addr, uptr size) {
   MemoryAccessRange(cur_thread(), CALLERPC, (uptr)addr, size, false);
 }