libsanitizer mege from upstream r171973

From-SVN: r195083

1 files changed, 9 insertions, 0 deletions

diff --git a/libsanitizer/asan/asan_thread.h b/libsanitizer/asan/asan_thread.h
index dff8c88528a..f385ec35fcd 100644
--- a/libsanitizer/asan/asan_thread.h
+++ b/libsanitizer/asan/asan_thread.h
@@ -37,6 +37,7 @@ class AsanThreadSummary {
       internal_memcpy(&stack_, stack, sizeof(*stack));
     }
     thread_ = 0;
+    name_[0] = 0;
   }
   u32 tid() { return tid_; }
   void set_tid(u32 tid) { tid_ = tid; }
@@ -47,6 +48,10 @@ class AsanThreadSummary {
   AsanThread *thread() { return thread_; }
   void set_thread(AsanThread *thread) { thread_ = thread; }
   static void TSDDtor(void *tsd);
+  void set_name(const char *name) {
+    internal_strncpy(name_, name, sizeof(name_) - 1);
+  }
+  const char *name() { return name_; }
 
  private:
   u32 tid_;
@@ -54,8 +59,12 @@ class AsanThreadSummary {
   bool announced_;
   StackTrace stack_;
   AsanThread *thread_;
+  char name_[128];
 };
 
+// AsanThreadSummary objects are never freed, so we need many of them.
+COMPILER_CHECK(sizeof(AsanThreadSummary) <= 4094);
+
 // AsanThread are stored in TSD and destroyed when the thread dies.
 class AsanThread {
  public: