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osl_getSystemTime: use high precision timer of W32, if available

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Change-Id: I7029f37639ead7a8b597ff39d1abcd295fab0551
This commit is contained in:
László Németh
2016-04-01 23:16:27 +02:00
parent 6b2d75f966
commit 3979afceec
1 changed files with 20 additions and 2 deletions
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22
sal/osl/w32/time.c
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@@ -35,10 +35,28 @@ sal_Bool SAL_CALL osl_getSystemTime(TimeValue* pTimeVal)
FILETIME CurTime, OffTime;
__int64 Value;
typedef BOOL (WINAPI *CheckTokenMembership_PROC)( HANDLE, PSID, PBOOL );
static HMODULE hModule = NULL;
static CheckTokenMembership_PROC pCheckTokenMembership = NULL;
OSL_ASSERT(pTimeVal != 0);
GetSystemTime(&SystemTime);
SystemTimeToFileTime(&SystemTime, &CurTime);
if ( !hModule )
{
hModule = GetModuleHandleA( "Kernel32.dll" );
if ( hModule )
pCheckTokenMembership = (CheckTokenMembership_PROC)GetProcAddress( hModule, "GetSystemTimePreciseAsFileTime" );
}
// use ~1 microsecond resolution if available
if ( pCheckTokenMembership )
GetSystemTimePreciseAsFileTime(&CurTime);
else
{
GetSystemTime(&SystemTime);
SystemTimeToFileTime(&SystemTime, &CurTime);
}
SystemTime.wYear = 1970;
SystemTime.wMonth = 1;