diff options
| -rw-r--r-- | src/time/clock_nanosleep.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/time/clock_nanosleep.c b/src/time/clock_nanosleep.c index 1174f510..e195499c 100644 --- a/src/time/clock_nanosleep.c +++ b/src/time/clock_nanosleep.c @@ -2,12 +2,37 @@ #include <errno.h> #include "syscall.h" +#define IS32BIT(x) !((x)+0x80000000ULL>>32) +#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63)) + int __clock_nanosleep(clockid_t clk, int flags, const struct timespec *req, struct timespec *rem) { if (clk == CLOCK_THREAD_CPUTIME_ID) return EINVAL; +#ifdef SYS_clock_nanosleep_time64 + time_t s = req->tv_sec; + long ns = req->tv_nsec; + int r = -ENOSYS; + if (SYS_clock_nanosleep == SYS_clock_nanosleep_time64 || !IS32BIT(s)) + r = __syscall_cp(SYS_clock_nanosleep_time64, clk, flags, + ((long long[]){s, ns}), rem); + if (SYS_clock_nanosleep == SYS_clock_nanosleep_time64 || r!=-ENOSYS) + return -r; + long long extra = s - CLAMP(s); + long ts32[2] = { CLAMP(s), ns }; + if (clk == CLOCK_REALTIME && !flags) + r = __syscall_cp(SYS_nanosleep, &ts32, &ts32); + else + r = __syscall_cp(SYS_clock_nanosleep, clk, flags, &ts32, &ts32); + if (r==-EINTR && rem && !(flags & TIMER_ABSTIME)) { + rem->tv_sec = ts32[0] + extra; + rem->tv_nsec = ts32[1]; + } + return -r; +#else if (clk == CLOCK_REALTIME && !flags) return -__syscall_cp(SYS_nanosleep, req, rem); return -__syscall_cp(SYS_clock_nanosleep, clk, flags, req, rem); +#endif } weak_alias(__clock_nanosleep, clock_nanosleep); |