| … | … | ||
|---|---|---|---|
| 31 | 31 | ||
| 32 | static inline cstamp | 32 | static inline cstamp |
| 33 | stamp (void) | 33 | stamp (void) |
| 34 | { | 34 | { |
| 35 | cstamp tsc; | 35 | cstamp tsc; |
| 36 | asm volatile ("rdtsc":"=a" (tsc)::"edx"); | 36 | asm volatile ("rdtsc" : "=a" (tsc) : : "edx"); |
| 37 | |||
| 38 | return tsc; | 37 | return tsc; |
| 39 | } | 38 | } |
| 40 | 39 | ||
| 41 | static inline cstamp | 40 | static inline cstamp |
| 42 | measure (cstamp t) | 41 | measure (cstamp t) |
| 43 | { | 42 | { |
| 44 | cstamp tsc; | 43 | return stamp () - t; |
| 45 | asm volatile ("rdtsc":"=a" (tsc)::"edx"); | ||
| 46 | |||
| 47 | if (tsc > t) | ||
| 48 | return tsc - t; | ||
| 49 | else | ||
| 50 | return t - tsc; | ||
| 51 | } | 44 | } |
| 52 | 45 | ||
| 53 | // cstamp s = stamp (); | 46 | // cstamp s = stamp (); |
| 54 | // s = measure (s); | 47 | // s = measure (s); |
| 55 | 48 |
| – | Removed lines |
| + | Added lines |
| < | Changed lines |
| > | Changed lines |