mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
ede2c5031f
Summary: We are moving towards 100%-prettified files. That's the first step when we apply Clang Format for `ReactCommon`. Changelog: [Internal] Reviewed By: mdvacca Differential Revision: D20110895 fbshipit-source-id: 0a0ce4997cf1c3721b0b07ef78c1a57ce87d20f9
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
|
|
|
|
// It's Unix
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
|
|
#endif
|
|
|
|
#if defined(__APPLE__) && defined(__MACH__)
|
|
|
|
// It's iOS or macOS or one of derivatives.
|
|
#include <dispatch/dispatch.h>
|
|
#include <mach/mach.h>
|
|
#include <mach/mach_time.h>
|
|
|
|
#endif
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
inline static int64_t monotonicTimeInMilliseconds() {
|
|
#if defined(__APPLE__) && defined(__MACH__)
|
|
|
|
static struct mach_timebase_info tb_info = {0};
|
|
static dispatch_once_t onceToken;
|
|
dispatch_once(&onceToken, ^{
|
|
__unused int ret = mach_timebase_info(&tb_info);
|
|
assert(0 == ret);
|
|
});
|
|
|
|
return (mach_absolute_time() * tb_info.numer) / tb_info.denom / 1000000;
|
|
|
|
#elif defined(_POSIX_MONOTONIC_CLOCK)
|
|
|
|
// It's Unix with MONOTONIC_CLOCK support (e.g. Android)
|
|
|
|
constexpr static int64_t NANOSECONDS_IN_SECOND = 1000000000LL;
|
|
constexpr static int64_t NANOSECONDS_IN_MILLISECOND = 1000000LL;
|
|
|
|
// Since SystemClock.uptimeMillis() is commonly used for performance
|
|
// measurement in Java and uptimeMillis() internally uses
|
|
// clock_gettime(CLOCK_MONOTONIC), we use the same API here. We need that to
|
|
// make sure we use the same time system on both JS and Java sides. Links to
|
|
// the source code:
|
|
// https://android.googlesource.com/platform/frameworks/native/+/jb-mr1-release/libs/utils/SystemClock.cpp
|
|
// https://android.googlesource.com/platform/system/core/+/master/libutils/Timers.cpp
|
|
struct timespec now;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &now);
|
|
|
|
return (now.tv_sec * NANOSECONDS_IN_SECOND + now.tv_nsec) /
|
|
NANOSECONDS_IN_MILLISECOND;
|
|
|
|
#else
|
|
|
|
It's Unix *without* MONOTONIC_CLOCK support or Microsoft Windows. If you
|
|
run this on Microsoft Windows,
|
|
could you please implement the function using some Windows -
|
|
specific APIs,
|
|
and submit a PR
|
|
? https
|
|
: // stackoverflow.com/questions/5404277/porting-clock-gettime-to-windows
|
|
|
|
#endif
|
|
}
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|