Prevent code folding in the ThreadWatcher ThreadUnresponsive_X functions.

chrome/browser/metrics/thread_watcher.cc

 // Copyright (c) 2012 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 "chrome/browser/metrics/thread_watcher.h"
 
 #include <math.h>  // ceil
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 21 matching lines @@
 //
 // We disable optimizations for this block of functions so the compiler doesn't
 // merge them all together.
 
 // TODO(eroman): What is the equivalent for other compilers?
 #if defined(COMPILER_MSVC)
 #pragma optimize("", off)
 MSVC_PUSH_DISABLE_WARNING(4748)
 #endif
 
+int* NullPointer() {
+  return reinterpret_cast<int*>(NULL);
+}
+
 void ThreadUnresponsive_UI() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_DB() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_WEBKIT() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_FILE() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_FILE_USER_BLOCKING() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_PROCESS_LAUNCHER() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_CACHE() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 void ThreadUnresponsive_IO() {
-  CHECK(false);
+  *NullPointer() = __LINE__;
 }
 
 #if defined(COMPILER_MSVC)
 MSVC_POP_WARNING()
 #pragma optimize("", on)
 #endif
 
 void CrashBecauseThreadWasUnresponsive(BrowserThread::ID thread_id) {
   base::debug::Alias(&thread_id);
 
@@ skipping 15 matching lines @@
     case BrowserThread::IO:
       return ThreadUnresponsive_IO();
     case BrowserThread::ID_COUNT:
       CHECK(false);  // This shouldn't actually be reached!
       break;
 
     // Omission of the default hander is intentional -- that way the compiler
     // should warn if our switch becomes outdated.
   }
 
-  CHECK(false);  // Shouldn't be reached.
+  CHECK(false) << "Unknown thread was unresponsive.";  // Shouldn't be reached.
 }
 
 }  // namespace
 
 // ThreadWatcher methods and members.
 ThreadWatcher::ThreadWatcher(const WatchingParams& params)
     : thread_id_(params.thread_id),
       thread_name_(params.thread_name),
       watched_loop_(
           BrowserThread::GetMessageLoopProxyForThread(params.thread_id)),
@@ skipping 802 matching lines @@
 
 #if defined(OS_WIN)
   // On Windows XP, give twice the time for shutdown.
   if (base::win::GetVersion() <= base::win::VERSION_XP)
     actual_duration *= 2;
 #endif
 
   shutdown_watchdog_ = new ShutdownWatchDogThread(actual_duration);
   shutdown_watchdog_->Arm();
 }