| 24 | } |
| 25 | |
| 26 | SystemTime getSystemTime() |
| 27 | { |
| 28 | LARGE_INTEGER t; |
| 29 | CompilerMemBar(); |
| 30 | if (!QueryPerformanceCounter(&t)) { |
| 31 | return static_cast<SystemTime>(-1); |
| 32 | } |
| 33 | CompilerMemBar(); |
| 34 | |
| 35 | return static_cast<SystemTime>(t.QuadPart); |
| 36 | } |
| 37 | |
| 38 | double getTimeDelta(SystemTime start) |
| 39 | { |