base/perf_util.h - Issue 714273004: mac: Expose keychain access frequency to Telemetry.

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Issue 714273004: mac: Expose keychain access frequency to Telemetry. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@mock_keychain_sleep

Patch Set: Add a common subclass to measurements. Created 6 years, 1 month ago

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1 // Copyright 2014 The Chromium Authors. All rights reserved.	1 // Copyright 2014 The Chromium Authors. All rights reserved.

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

3 // found in the LICENSE file.	3 // found in the LICENSE file.

4	4

5 #ifndef BASE_PERF_UTIL_H_	5 #ifndef BASE_PERF_UTIL_H_

6 #define BASE_PERF_UTIL_H_	6 #define BASE_PERF_UTIL_H_

7	7

8 #include "base/basictypes.h"	8 #include "base/basictypes.h"

9	9

10 namespace base {	10 namespace base {

11	11

12 // Spins the CPU for the specified amount of time. Not for use in production	12 // Spins the CPU for the specified amount of time. Not for use in production

13 // code.	13 // code.

14 void SpinCpuMicroseconds(int64_t microseconds);	14 void SpinCpuMicroseconds(int64_t microseconds);

15	15

	16 // Emits a local histogram indicating that the keychain was accessed.

	17 void EmitAccessKeychainHistogram();

	18

16 } // namespace base	19 } // namespace base

17	20

18 #endif // BASE_PERF_UTIL_H_	21 #endif // BASE_PERF_UTIL_H_

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