| 199 | } |
| 200 | |
| 201 | static __inline sbintime_t |
| 202 | nstosbt(int64_t _ns) |
| 203 | { |
| 204 | sbintime_t sb = 0; |
| 205 | |
| 206 | #ifdef KASSERT |
| 207 | KASSERT(_ns >= 0, ("Negative values illegal for nstosbt: %jd", _ns)); |
| 208 | #endif |
| 209 | if (_ns >= SBT_1S) { |
| 210 | sb = (_ns / 1000000000) * SBT_1S; |
| 211 | _ns = _ns % 1000000000; |
| 212 | } |
| 213 | /* 9223372037 = ceil(2^63 / 1000000000) */ |
| 214 | sb += ((_ns * 9223372037ull) + 0x7fffffff) >> 31; |
| 215 | return (sb); |
| 216 | } |
| 217 | |
| 218 | static __inline int64_t |
| 219 | sbttous(sbintime_t _sbt) |