#include "win32-headers.h"
#endif
-// Make sure CLOCK_{MONOTONIC,REALTIME}_COARSE is defined on Linux.
-#if V8_OS_LINUX
-# if !defined(CLOCK_REALTIME_COARSE)
-# define CLOCK_REALTIME_COARSE 5 // 2.6.32 and up.
-# endif
-# if !defined(CLOCK_MONOTONIC_COARSE)
-# define CLOCK_MONOTONIC_COARSE 6 // 2.6.32 and up.
-# endif
-#endif // V8_OS_LINUX
-
-
namespace v8 {
namespace internal {
#elif V8_OS_POSIX
Time Time::Now() {
-#if V8_LIBRT_NOT_AVAILABLE
- // TODO(bmeurer): This is a temporary hack to support cross-compiling
- // Chrome for Android in AOSP. Remove this once AOSP is fixed, also
- // cleanup the tools/gyp/v8.gyp file.
struct timeval tv;
int result = gettimeofday(&tv, NULL);
ASSERT_EQ(0, result);
USE(result);
return FromTimeval(tv);
-#elif defined(CLOCK_REALTIME_COARSE)
- struct timespec ts;
- // Use CLOCK_REALTIME_COARSE if it's available and has a precision of 1ms
- // or higher. It's serviced from the vDSO with no system call overhead.
- static clock_t clock_id = static_cast<clock_t>(-1);
- STATIC_ASSERT(CLOCK_REALTIME != static_cast<clock_t>(-1));
- STATIC_ASSERT(CLOCK_REALTIME_COARSE != static_cast<clock_t>(-1));
- if (clock_id == static_cast<clock_t>(-1)) {
- if (clock_getres(CLOCK_REALTIME_COARSE, &ts) == 0
- && ts.tv_nsec <= kNanosecondsPerMillisecond)
- clock_id = CLOCK_REALTIME_COARSE;
- else
- clock_id = CLOCK_REALTIME;
- }
- int result = clock_gettime(clock_id, &ts);
- ASSERT_EQ(0, result);
- USE(result);
- return FromTimespec(ts);
-#else
- struct timeval tv;
- int result = gettimeofday(&tv, NULL);
- ASSERT_EQ(0, result);
- USE(result);
- return FromTimeval(tv);
-#endif // V8_LIBRT_NOT_AVAILABLE
}
ticks = (tv.tv_sec * Time::kMicrosecondsPerSecond + tv.tv_usec);
#elif V8_OS_POSIX
struct timespec ts;
-#if defined(CLOCK_MONOTONIC_COARSE)
- // Use CLOCK_MONOTONIC_COARSE if it's available and has a precision of 1ms
- // or higher. It's serviced from the vDSO with no system call overhead.
- static clock_t clock_id = static_cast<clock_t>(-1);
- STATIC_ASSERT(CLOCK_MONOTONIC != static_cast<clock_t>(-1));
- STATIC_ASSERT(CLOCK_MONOTONIC_COARSE != static_cast<clock_t>(-1));
- if (clock_id == static_cast<clock_t>(-1)) {
- if (clock_getres(CLOCK_MONOTONIC_COARSE, &ts) == 0
- && ts.tv_nsec <= Time::kNanosecondsPerMillisecond)
- clock_id = CLOCK_MONOTONIC_COARSE;
- else
- clock_id = CLOCK_MONOTONIC;
- }
-#else
- static const clock_t clock_id = CLOCK_MONOTONIC;
-#endif // defined(CLOCK_MONOTONIC_COARSE)
- int result = clock_gettime(clock_id, &ts);
+ int result = clock_gettime(CLOCK_MONOTONIC, &ts);
ASSERT_EQ(0, result);
USE(result);
ticks = (ts.tv_sec * Time::kMicrosecondsPerSecond +