The Tor Browser: security/sandbox/chromium/base/tracking

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 // This is a simple struct with tracking information that is stored

     6 // with a PendingTask (when message_loop is handling the task).

     7 // Only the information that is shared with the profiler in tracked_objects

     8 // are included in this structure.

    11 #ifndef BASE_TRACKING_INFO_H_

    12 #define BASE_TRACKING_INFO_H_

    14 #include "base/base_export.h"

    15 #include "base/profiler/tracked_time.h"

    16 #include "base/time/time.h"

    18 namespace tracked_objects {

    19 class Location;

    20 class Births;

    21 }

    23 namespace base {

    25 // This structure is copied around by value.

    26 struct BASE_EXPORT TrackingInfo {

    27   TrackingInfo();

    28   TrackingInfo(const tracked_objects::Location& posted_from,

    29                base::TimeTicks delayed_run_time);

    30   ~TrackingInfo();

    32   // To avoid conflating our stats with the delay duration in a PostDelayedTask,

    33   // we identify such tasks, and replace their post_time with the time they

    34   // were scheduled (requested?) to emerge from the delayed task queue. This

    35   // means that queuing delay for such tasks will show how long they went

    36   // unserviced, after they *could* be serviced.  This is the same stat as we

    37   // have for non-delayed tasks, and we consistently call it queuing delay.

    38   tracked_objects::TrackedTime EffectiveTimePosted() const {

    39     return tracked_objects::TrackedTime(

    40         delayed_run_time.is_null() ? time_posted : delayed_run_time);

    41   }

    43   // Record of location and thread that the task came from.

    44   tracked_objects::Births* birth_tally;

    46   // Time when the related task was posted.

    47   base::TimeTicks time_posted;

    49   // The time when the task should be run.

    50   base::TimeTicks delayed_run_time;

    51 };

    53 }  // namespace base

    55 #endif  // BASE_TRACKING_INFO_H_

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