Reviewers: ulan,
Description:
Revert "Adding a high-resolution timer to platform win32."
This reverts r12651.
Please review this at https://codereview.chromium.org/11033014/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/platform-win32.cc
Index: src/platform-win32.cc
diff --git a/src/platform-win32.cc b/src/platform-win32.cc
index
f9e37d86a2e8b11110d8edf1fa44bd11e15eeb44..65d31a94f9174c23e72ad0a26e199ef0deda29e2
100644
--- a/src/platform-win32.cc
+++ b/src/platform-win32.cc
@@ -591,16 +591,8 @@ double OS::TimeCurrentMillis() {
return t.ToJSTime();
}
-
-static LARGE_INTEGER frequency = 0;
-
-
-// Returns the tickcounter based on QueryPerformanceCounter or timeGetTime.
+// Returns the tickcounter based on timeGetTime.
int64_t OS::Ticks() {
- static LARGE_INTEGER tick;
- if (frequency != 0 && QueryPerformanceCounter(&tick)) {
- return static_cast<int64_t>(tick.QuadPart * 1e6 / frequency->QuadPart);
- }
return timeGetTime() * 1000; // Convert to microseconds.
}
@@ -2095,15 +2087,12 @@ void OS::SetUp() {
// call this setup code within the same millisecond.
uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis());
srand(static_cast<unsigned int>(seed));
- // Get the number of ticks per second that is used in OS::Ticks()
- QueryPerformanceFrequency(&frequency);
limit_mutex = CreateMutex();
SamplerThread::SetUp();
}
void OS::TearDown() {
- frequency = 0;
SamplerThread::TearDown();
delete limit_mutex;
}
--
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