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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/base/platform/time.h" | 5 #include "src/base/platform/time.h" |
6 | 6 |
7 #if V8_OS_POSIX | 7 #if V8_OS_POSIX |
8 #include <fcntl.h> // for O_RDONLY | 8 #include <fcntl.h> // for O_RDONLY |
9 #include <sys/time.h> | 9 #include <sys/time.h> |
10 #include <unistd.h> | 10 #include <unistd.h> |
11 #endif | 11 #endif |
12 #if V8_OS_MACOSX | 12 #if V8_OS_MACOSX |
13 #include <mach/mach_time.h> | 13 #include <mach/mach_time.h> |
14 #endif | 14 #endif |
15 | 15 |
16 #include <cstring> | 16 #include <string.h> |
17 #include <ostream> | |
18 | 17 |
19 #if V8_OS_WIN | 18 #if V8_OS_WIN |
20 #include "src/base/lazy-instance.h" | 19 #include "src/base/lazy-instance.h" |
21 #include "src/base/win32-headers.h" | 20 #include "src/base/win32-headers.h" |
22 #endif | 21 #endif |
23 #include "src/base/cpu.h" | 22 #include "src/base/cpu.h" |
24 #include "src/base/logging.h" | 23 #include "src/base/logging.h" |
25 #include "src/base/platform/platform.h" | 24 #include "src/base/platform/platform.h" |
26 | 25 |
27 namespace v8 { | 26 namespace v8 { |
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349 return 0; | 348 return 0; |
350 } | 349 } |
351 if (IsMax()) { | 350 if (IsMax()) { |
352 // Preserve max without offset to prevent overflow. | 351 // Preserve max without offset to prevent overflow. |
353 return std::numeric_limits<double>::max(); | 352 return std::numeric_limits<double>::max(); |
354 } | 353 } |
355 return static_cast<double>(us_) / kMicrosecondsPerMillisecond; | 354 return static_cast<double>(us_) / kMicrosecondsPerMillisecond; |
356 } | 355 } |
357 | 356 |
358 | 357 |
359 std::ostream& operator<<(std::ostream& os, const Time& time) { | |
360 return os << time.ToJsTime(); | |
361 } | |
362 | |
363 | |
364 #if V8_OS_WIN | 358 #if V8_OS_WIN |
365 | 359 |
366 class TickClock { | 360 class TickClock { |
367 public: | 361 public: |
368 virtual ~TickClock() {} | 362 virtual ~TickClock() {} |
369 virtual int64_t Now() = 0; | 363 virtual int64_t Now() = 0; |
370 virtual bool IsHighResolution() = 0; | 364 virtual bool IsHighResolution() = 0; |
371 }; | 365 }; |
372 | 366 |
373 | 367 |
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647 | 641 |
648 | 642 |
649 // static | 643 // static |
650 bool TimeTicks::KernelTimestampAvailable() { | 644 bool TimeTicks::KernelTimestampAvailable() { |
651 return kernel_tick_clock.Pointer()->Available(); | 645 return kernel_tick_clock.Pointer()->Available(); |
652 } | 646 } |
653 | 647 |
654 #endif // V8_OS_WIN | 648 #endif // V8_OS_WIN |
655 | 649 |
656 } } // namespace v8::base | 650 } } // namespace v8::base |
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