ios/chrome/browser/crash_loop_detection_util.h

   1 // Copyright 2013 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.
   4
   5 #ifndef IOS_CHROME_BROWSER_CRASH_LOOP_DETECTION_UTIL_H_
   6 #define IOS_CHROME_BROWSER_CRASH_LOOP_DETECTION_UTIL_H_
   7
   8 namespace crash_util {
   9
  10 // Returns the number of consecutive failed startups ('instant' crashes) prior
  11 // to this one. This method always returns the number of prior failures even
  12 // after calls to increment or reset the value.
  13 int GetFailedStartupAttemptCount();
  14
  15 // Increases the failed startup count. This should be called immediately after
  16 // startup, so that if there is a crash, it is recorded.
  17 // If |flush_immediately| is true, the value will be persisted immediately. If
  18 // |flush_immediately| is false, this should be followed by a call to
  19 // [[NSUserDefaults standardUserDefaults] synchronize]. This is optional to
  20 // allow coallescing of the potentially expensive call during startup.
  21 void IncrementFailedStartupAttemptCount(bool flush_immediately);
  22
  23 // Resets the failed startup count. This should be called once there is some
  24 // indication the user isn't in a crash loop (e.g., some amount of time has
  25 // elapsed, or some deliberate user action has been taken).
  26 void ResetFailedStartupAttemptCount();
  27
  28 }  // namespace crash_util
  29
  30 #endif  // IOS_CHROME_BROWSER_CRASH_LOOP_DETECTION_UTIL_H_