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Issue 1128203010: base: Remove the remaining usage GG_(U)INTn_C macros. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: review Created 5 years, 7 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 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 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 5
6 // Windows Timer Primer 6 // Windows Timer Primer
7 // 7 //
8 // A good article: http://www.ddj.com/windows/184416651 8 // A good article: http://www.ddj.com/windows/184416651
9 // A good mozilla bug: http://bugzilla.mozilla.org/show_bug.cgi?id=363258 9 // A good mozilla bug: http://bugzilla.mozilla.org/show_bug.cgi?id=363258
10 // 10 //
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29 // 29 //
30 // To work around all this, we're going to generally use timeGetTime(). We 30 // To work around all this, we're going to generally use timeGetTime(). We
31 // will only increase the system-wide timer if we're not running on battery 31 // will only increase the system-wide timer if we're not running on battery
32 // power. 32 // power.
33 33
34 #include "base/time/time.h" 34 #include "base/time/time.h"
35 35
36 #pragma comment(lib, "winmm.lib") 36 #pragma comment(lib, "winmm.lib")
37 #include <windows.h> 37 #include <windows.h>
38 #include <mmsystem.h> 38 #include <mmsystem.h>
39 #include <stdint.h>
39 40
40 #include "base/basictypes.h" 41 #include "base/basictypes.h"
41 #include "base/cpu.h" 42 #include "base/cpu.h"
42 #include "base/lazy_instance.h" 43 #include "base/lazy_instance.h"
43 #include "base/logging.h" 44 #include "base/logging.h"
44 #include "base/synchronization/lock.h" 45 #include "base/synchronization/lock.h"
45 46
46 using base::Time; 47 using base::Time;
47 using base::TimeDelta; 48 using base::TimeDelta;
48 using base::TimeTicks; 49 using base::TimeTicks;
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99 100
100 } // namespace 101 } // namespace
101 102
102 // Time ----------------------------------------------------------------------- 103 // Time -----------------------------------------------------------------------
103 104
104 // The internal representation of Time uses FILETIME, whose epoch is 1601-01-01 105 // The internal representation of Time uses FILETIME, whose epoch is 1601-01-01
105 // 00:00:00 UTC. ((1970-1601)*365+89)*24*60*60*1000*1000, where 89 is the 106 // 00:00:00 UTC. ((1970-1601)*365+89)*24*60*60*1000*1000, where 89 is the
106 // number of leap year days between 1601 and 1970: (1970-1601)/4 excluding 107 // number of leap year days between 1601 and 1970: (1970-1601)/4 excluding
107 // 1700, 1800, and 1900. 108 // 1700, 1800, and 1900.
108 // static 109 // static
109 const int64 Time::kTimeTToMicrosecondsOffset = GG_INT64_C(11644473600000000); 110 const int64 Time::kTimeTToMicrosecondsOffset = INT64_C(11644473600000000);
110 111
111 // static 112 // static
112 Time Time::Now() { 113 Time Time::Now() {
113 if (initial_time == 0) 114 if (initial_time == 0)
114 InitializeClock(); 115 InitializeClock();
115 116
116 // We implement time using the high-resolution timers so that we can get 117 // We implement time using the high-resolution timers so that we can get
117 // timeouts which are smaller than 10-15ms. If we just used 118 // timeouts which are smaller than 10-15ms. If we just used
118 // CurrentWallclockMicroseconds(), we'd have the less-granular timer. 119 // CurrentWallclockMicroseconds(), we'd have the less-granular timer.
119 // 120 //
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518 TimeTicks TimeTicks::FromQPCValue(LONGLONG qpc_value) { 519 TimeTicks TimeTicks::FromQPCValue(LONGLONG qpc_value) {
519 return TimeTicks() + QPCValueToTimeDelta(qpc_value); 520 return TimeTicks() + QPCValueToTimeDelta(qpc_value);
520 } 521 }
521 522
522 // TimeDelta ------------------------------------------------------------------ 523 // TimeDelta ------------------------------------------------------------------
523 524
524 // static 525 // static
525 TimeDelta TimeDelta::FromQPCValue(LONGLONG qpc_value) { 526 TimeDelta TimeDelta::FromQPCValue(LONGLONG qpc_value) {
526 return QPCValueToTimeDelta(qpc_value); 527 return QPCValueToTimeDelta(qpc_value);
527 } 528 }
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