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Also copy the fallback code.

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Review URL: https://codereview.chromium.org/1519073003 .
This commit is contained in:
Ryan Macnak 2015-12-11 13:35:06 -08:00
parent 6d0453594a
commit 1a333dcdd2
1 changed files with 19 additions and 0 deletions
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19
runtime/bin/utils_win.cc
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@ -168,6 +168,25 @@ bool ShellUtils::GetUtf8Argv(int argc, char** argv) {
return true;
}
static int64_t GetCurrentTimeMicros() {
static const int64_t kTimeEpoc = 116444736000000000LL;
static const int64_t kTimeScaler = 10; // 100 ns to us.
// Although win32 uses 64-bit integers for representing timestamps,
// these are packed into a FILETIME structure. The FILETIME
// structure is just a struct representing a 64-bit integer. The
// TimeStamp union allows access to both a FILETIME and an integer
// representation of the timestamp. The Windows timestamp is in
// 100-nanosecond intervals since January 1, 1601.
union TimeStamp {
FILETIME ft_;
int64_t t_;
};
TimeStamp time;
GetSystemTimeAsFileTime(&time.ft_);
return (time.t_ - kTimeEpoc) / kTimeScaler;
}
int64_t TimerUtils::GetCurrentMonotonicMillis() {
return GetCurrentMonotonicMicros() / 1000;
}