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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project 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 #include "src/platform/time.h" | 5 #include "src/platform/time.h" |
6 | 6 |
7 #if V8_OS_POSIX | 7 #if V8_OS_POSIX |
8 #include <sys/time.h> | 8 #include <sys/time.h> |
9 #endif | 9 #endif |
10 #if V8_OS_MACOSX | 10 #if V8_OS_MACOSX |
11 #include <mach/mach_time.h> | 11 #include <mach/mach_time.h> |
12 #endif | 12 #endif |
13 | 13 |
14 #include <string.h> | 14 #include <string.h> |
15 | 15 |
| 16 #if V8_OS_WIN |
| 17 #include "src/base/lazy-instance.h" |
| 18 #include "src/base/win32-headers.h" |
| 19 #endif |
16 #include "src/checks.h" | 20 #include "src/checks.h" |
17 #include "src/cpu.h" | 21 #include "src/cpu.h" |
18 #include "src/platform.h" | 22 #include "src/platform.h" |
19 #if V8_OS_WIN | |
20 #include "src/win32-headers.h" | |
21 #endif | |
22 | 23 |
23 namespace v8 { | 24 namespace v8 { |
24 namespace internal { | 25 namespace internal { |
25 | 26 |
26 TimeDelta TimeDelta::FromDays(int days) { | 27 TimeDelta TimeDelta::FromDays(int days) { |
27 return TimeDelta(days * Time::kMicrosecondsPerDay); | 28 return TimeDelta(days * Time::kMicrosecondsPerDay); |
28 } | 29 } |
29 | 30 |
30 | 31 |
31 TimeDelta TimeDelta::FromHours(int hours) { | 32 TimeDelta TimeDelta::FromHours(int hours) { |
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186 ::GetSystemTimeAsFileTime(&ft); | 187 ::GetSystemTimeAsFileTime(&ft); |
187 return Time::FromFiletime(ft); | 188 return Time::FromFiletime(ft); |
188 } | 189 } |
189 | 190 |
190 TimeTicks initial_ticks_; | 191 TimeTicks initial_ticks_; |
191 Time initial_time_; | 192 Time initial_time_; |
192 Mutex mutex_; | 193 Mutex mutex_; |
193 }; | 194 }; |
194 | 195 |
195 | 196 |
196 static LazyStaticInstance<Clock, | 197 static base::LazyStaticInstance<Clock, base::DefaultConstructTrait<Clock>, |
197 DefaultConstructTrait<Clock>, | 198 base::ThreadSafeInitOnceTrait>::type clock = |
198 ThreadSafeInitOnceTrait>::type clock = LAZY_STATIC_INSTANCE_INITIALIZER; | 199 LAZY_STATIC_INSTANCE_INITIALIZER; |
199 | 200 |
200 | 201 |
201 Time Time::Now() { | 202 Time Time::Now() { |
202 return clock.Pointer()->Now(); | 203 return clock.Pointer()->Now(); |
203 } | 204 } |
204 | 205 |
205 | 206 |
206 Time Time::NowFromSystemTime() { | 207 Time Time::NowFromSystemTime() { |
207 return clock.Pointer()->NowFromSystemTime(); | 208 return clock.Pointer()->NowFromSystemTime(); |
208 } | 209 } |
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455 return false; | 456 return false; |
456 } | 457 } |
457 | 458 |
458 private: | 459 private: |
459 Mutex mutex_; | 460 Mutex mutex_; |
460 DWORD last_seen_now_; | 461 DWORD last_seen_now_; |
461 int64_t rollover_ms_; | 462 int64_t rollover_ms_; |
462 }; | 463 }; |
463 | 464 |
464 | 465 |
465 static LazyStaticInstance<RolloverProtectedTickClock, | 466 static base::LazyStaticInstance< |
466 DefaultConstructTrait<RolloverProtectedTickClock>, | 467 RolloverProtectedTickClock, |
467 ThreadSafeInitOnceTrait>::type tick_clock = | 468 base::DefaultConstructTrait<RolloverProtectedTickClock>, |
468 LAZY_STATIC_INSTANCE_INITIALIZER; | 469 base::ThreadSafeInitOnceTrait>::type tick_clock = |
| 470 LAZY_STATIC_INSTANCE_INITIALIZER; |
469 | 471 |
470 | 472 |
471 struct CreateHighResTickClockTrait { | 473 struct CreateHighResTickClockTrait { |
472 static TickClock* Create() { | 474 static TickClock* Create() { |
473 // Check if the installed hardware supports a high-resolution performance | 475 // Check if the installed hardware supports a high-resolution performance |
474 // counter, and if not fallback to the low-resolution tick clock. | 476 // counter, and if not fallback to the low-resolution tick clock. |
475 LARGE_INTEGER ticks_per_second; | 477 LARGE_INTEGER ticks_per_second; |
476 if (!QueryPerformanceFrequency(&ticks_per_second)) { | 478 if (!QueryPerformanceFrequency(&ticks_per_second)) { |
477 return tick_clock.Pointer(); | 479 return tick_clock.Pointer(); |
478 } | 480 } |
479 | 481 |
480 // On Athlon X2 CPUs (e.g. model 15) the QueryPerformanceCounter | 482 // On Athlon X2 CPUs (e.g. model 15) the QueryPerformanceCounter |
481 // is unreliable, fallback to the low-resolution tick clock. | 483 // is unreliable, fallback to the low-resolution tick clock. |
482 CPU cpu; | 484 CPU cpu; |
483 if (strcmp(cpu.vendor(), "AuthenticAMD") == 0 && cpu.family() == 15) { | 485 if (strcmp(cpu.vendor(), "AuthenticAMD") == 0 && cpu.family() == 15) { |
484 return tick_clock.Pointer(); | 486 return tick_clock.Pointer(); |
485 } | 487 } |
486 | 488 |
487 return new HighResolutionTickClock(ticks_per_second.QuadPart); | 489 return new HighResolutionTickClock(ticks_per_second.QuadPart); |
488 } | 490 } |
489 }; | 491 }; |
490 | 492 |
491 | 493 |
492 static LazyDynamicInstance<TickClock, | 494 static base::LazyDynamicInstance<TickClock, |
493 CreateHighResTickClockTrait, | 495 CreateHighResTickClockTrait, |
494 ThreadSafeInitOnceTrait>::type high_res_tick_clock = | 496 base::ThreadSafeInitOnceTrait>::type high_res_tick_clock = |
495 LAZY_DYNAMIC_INSTANCE_INITIALIZER; | 497 LAZY_DYNAMIC_INSTANCE_INITIALIZER; |
496 | 498 |
497 | 499 |
498 TimeTicks TimeTicks::Now() { | 500 TimeTicks TimeTicks::Now() { |
499 // Make sure we never return 0 here. | 501 // Make sure we never return 0 here. |
500 TimeTicks ticks(tick_clock.Pointer()->Now()); | 502 TimeTicks ticks(tick_clock.Pointer()->Now()); |
501 ASSERT(!ticks.IsNull()); | 503 ASSERT(!ticks.IsNull()); |
502 return ticks; | 504 return ticks; |
503 } | 505 } |
504 | 506 |
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559 | 561 |
560 | 562 |
561 // static | 563 // static |
562 bool TimeTicks::IsHighResolutionClockWorking() { | 564 bool TimeTicks::IsHighResolutionClockWorking() { |
563 return true; | 565 return true; |
564 } | 566 } |
565 | 567 |
566 #endif // V8_OS_WIN | 568 #endif // V8_OS_WIN |
567 | 569 |
568 } } // namespace v8::internal | 570 } } // namespace v8::internal |
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