Stack sampling profiler: set process and thread information

chrome/browser/metrics/thread_watcher.h

 // 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.
 
 // This file defines a WatchDog thread that monitors the responsiveness of other
 // browser threads like UI, IO, DB, FILE and CACHED threads. It also defines
 // ThreadWatcher class which performs health check on threads that would like to
 // be watched. This file also defines ThreadWatcherList class that has list of
 // all active ThreadWatcher objects.
 //
@@ skipping 44 matching lines @@
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/profiler/stack_sampling_profiler.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/platform_thread.h"
 #include "base/threading/thread.h"
 #include "base/threading/watchdog.h"
 #include "base/time/time.h"
+#include "components/metrics/call_stack_profile_params.h"
 #include "components/omnibox/browser/omnibox_event_global_tracker.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class CustomThreadWatcher;
 class StartupTimeBomb;
 class ThreadWatcherList;
 class ThreadWatcherObserver;
 
@@ skipping 564 matching lines @@
   const base::PlatformThreadId thread_id_;
 
   DISALLOW_COPY_AND_ASSIGN(StartupTimeBomb);
 };
 
 // This is a wrapper class for metrics logging of the stack of a janky method.
 class JankTimeBomb {
  public:
   // This is instantiated when the jank needs to be detected in a method. Posts
   // an Alarm callback task on WatchDogThread with |duration| as the delay. This
-  // can be called on any thread.
-  explicit JankTimeBomb(base::TimeDelta duration);
+  // can be called on any thread, but the thread's identity should be provided
+  // in |thread|.
+  JankTimeBomb(base::TimeDelta duration,
+               metrics::CallStackProfileParams::Thread thread);
   virtual ~JankTimeBomb();
 
   // Returns true if JankTimeBomb is enabled.
   bool IsEnabled() const;
 
  protected:
   // Logs the call stack of given thread_id's janky method. This runs on
   // WatchDogThread. This is overridden in tests to prevent the metrics logging.
   virtual void Alarm(base::PlatformThreadId thread_id);
 
  private:
+  // The thread that instantiated this object.
+  const metrics::CallStackProfileParams::Thread thread_;
+
   // A profiler that periodically samples stack traces. Used to sample jank
   // behavior.
   std::unique_ptr<base::StackSamplingProfiler> sampling_profiler_;
 
   // We use this factory during creation and starting timer.
   base::WeakPtrFactory<JankTimeBomb> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(JankTimeBomb);
 };
 
@@ skipping 14 matching lines @@
   // shutdown_watchdog_ watches for hangs during shutdown.
   base::Watchdog* shutdown_watchdog_;
 
   // The |thread_id_| on which this object is constructed.
   const base::PlatformThreadId thread_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ShutdownWatcherHelper);
 };
 
 #endif  // CHROME_BROWSER_METRICS_THREAD_WATCHER_H_