trace_event support for thread names

base/threading/thread.cc

 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/threading/thread.h"
 
 #include "base/lazy_instance.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "base/threading/thread_local.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/debug/trace_event.h"
 
 namespace base {
 
 namespace {
 
 // We use this thread-local variable to record whether or not a thread exited
 // because its Stop method was called.  This allows us to catch cases where
 // MessageLoop::Quit() is called directly, which is unexpected when using a
 // Thread to setup and run a MessageLoop.
 base::LazyInstance<base::ThreadLocalBoolean> lazy_tls_bool(
@@ skipping 121 matching lines @@
 
 void Thread::ThreadMain() {
   {
     // The message loop for this thread.
     MessageLoop message_loop(startup_data_->options.message_loop_type);
 
     // Complete the initialization of our Thread object.
     thread_id_ = PlatformThread::CurrentId();
     PlatformThread::SetName(name_.c_str());
     ANNOTATE_THREAD_NAME(name_.c_str());  // Tell the name to race detector.
+    // Tell the name to TRACE_EVENT
+    debug::TraceLog::GetInstance()->SetCurrentThreadName(name_.c_str());

[scheib, 2011/07/26 18:47:16]

Isn't this redundant with the call to PlatformThread::SetName just above?

     message_loop.set_thread_name(name_);
     message_loop_ = &message_loop;
     message_loop_proxy_ = MessageLoopProxy::CreateForCurrentThread();
 
     // Let the thread do extra initialization.
     // Let's do this before signaling we are started.
     Init();
 
     startup_data_->event.Signal();
     // startup_data_ can't be touched anymore since the starting thread is now
     // unlocked.
 
     Run(message_loop_);
 
     // Let the thread do extra cleanup.
     CleanUp();
 
     // Assert that MessageLoop::Quit was called by ThreadQuitTask.
     DCHECK(GetThreadWasQuitProperly());
 
     // We can't receive messages anymore.
     message_loop_ = NULL;
     message_loop_proxy_ = NULL;
   }
   thread_id_ = kInvalidThreadId;
 }
 
 }  // namespace base