Exemple #1
0
/*
 * Class:     sage_Sage
 * Method:    getEventTime0
 * Signature: ()J
 */
JNIEXPORT jlong JNICALL Java_sage_Sage_getEventTime0(JNIEnv *env, jclass jc)
{
//    DWORD event_offset = GetMessageTime();
//    if (event_offset <= 0) {
//        event_offset = GetTickCount();
//    }
	// NARFLEX - I have no idea why this was using GetMessageTime; but that causes the value to
	// vary between threads which is very, very bad so we don't use that at all anymore.
	DWORD event_offset = GetTickCount();
    // All computations and stored values are in milliseconds. The Win32
    // FILETIME structure is in 100s of nanoseconds, so the FT2INT64 macro
    // divides by 10^4. (10^7 / 10^4 = 10^3).
    //
    // UTC time is milliseconds since January 1, 1970.
    // Windows system time is 100s of nanoseconds since January 1, 1601.
    // Windows event time is milliseconds since boot, but wraps every 49.7
    // days because it is only a DWORD.

    static const jlong WRAP_TIME_MILLIS = (jlong)((DWORD)-1);
    static jlong boot_time_utc = 0;
    static jlong boot_time_1601 = 0;
    static jlong utc_epoch_1601 = 0;

    if (utc_epoch_1601 == 0) {
        SYSTEMTIME sys_epoch_1601;
        FILETIME file_epoch_1601;
        
        memset(&sys_epoch_1601, 0, sizeof(SYSTEMTIME));
        sys_epoch_1601.wYear = 1970;
        sys_epoch_1601.wMonth = 1;
        sys_epoch_1601.wDay = 1;

        SystemTimeToFileTime(&sys_epoch_1601, &file_epoch_1601);
        utc_epoch_1601 = FT2INT64(file_epoch_1601);
    }

    SYSTEMTIME current_sys_time_1601;
    FILETIME current_file_time_1601;
    jlong current_time_1601;

    GetSystemTime(&current_sys_time_1601);
    SystemTimeToFileTime(&current_sys_time_1601, &current_file_time_1601);
    current_time_1601 = FT2INT64(current_file_time_1601);

    if ((current_time_1601 - boot_time_1601) > WRAP_TIME_MILLIS) {
        // Need to reset boot time
        DWORD since_boot_millis = GetTickCount();
        boot_time_1601 = current_time_1601 - since_boot_millis;
        boot_time_utc = boot_time_1601 - utc_epoch_1601;
    }

    return boot_time_utc + event_offset;
}
Exemple #2
0
long
dbgsysCurrentTimeMillis() {
    static long fileTime_1_1_70 = 0;    /* midnight 1/1/70 */
    SYSTEMTIME st0;
    FILETIME   ft0;

    /* initialize on first usage */
    if (fileTime_1_1_70 == 0) {
        memset(&st0, 0, sizeof(st0));
        st0.wYear  = 1970;
        st0.wMonth = 1;
        st0.wDay   = 1;
        SystemTimeToFileTime(&st0, &ft0);
        fileTime_1_1_70 = FT2INT64(ft0);
    }

    GetSystemTime(&st0);
    SystemTimeToFileTime(&st0, &ft0);

    return (FT2INT64(ft0) - fileTime_1_1_70) / 10000;
}
Exemple #3
0
jlong
sysThreadCPUTime()
{
    if (windowsNT) {
        FILETIME CreationTime;
        FILETIME ExitTime;
        FILETIME KernelTime;
        FILETIME UserTime;

        GetThreadTimes(GetCurrentThread(),
                       &CreationTime, &ExitTime, &KernelTime, &UserTime);
        return FT2INT64(UserTime) * 100;
    } else {
        return (jlong)sysGetMilliTicks() * 1000000;
    }
}