38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
#include <time.h>
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#include <limits.h>
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#include "pthread_impl.h"
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#define IS32BIT(x) !((x)+0x80000000ULL>>32)
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int timer_settime(timer_t t, int flags, const struct itimerspec *restrict val, struct itimerspec *restrict old)
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{
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if ((intptr_t)t < 0) {
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pthread_t td = (void *)((uintptr_t)t << 1);
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t = (void *)(uintptr_t)(td->timer_id & INT_MAX);
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}
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#ifdef SYS_timer_settime64
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time_t is = val->it_interval.tv_sec, vs = val->it_value.tv_sec;
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long ins = val->it_interval.tv_nsec, vns = val->it_value.tv_nsec;
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int r = -ENOSYS;
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if (SYS_timer_settime == SYS_timer_settime64
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|| !IS32BIT(is) || !IS32BIT(vs) || (sizeof(time_t)>4 && old))
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r = __syscall(SYS_timer_settime64, t, flags,
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((long long[]){is, ins, vs, vns}), old);
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if (SYS_timer_settime == SYS_timer_settime64 || r!=-ENOSYS)
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return __syscall_ret(r);
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if (!IS32BIT(is) || !IS32BIT(vs))
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return __syscall_ret(-ENOTSUP);
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long old32[4];
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r = __syscall(SYS_timer_settime, t, flags,
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((long[]){is, ins, vs, vns}), old32);
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if (!r && old) {
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old->it_interval.tv_sec = old32[0];
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old->it_interval.tv_nsec = old32[1];
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old->it_value.tv_sec = old32[2];
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old->it_value.tv_nsec = old32[3];
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}
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return __syscall_ret(r);
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#endif
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return syscall(SYS_timer_settime, t, flags, val, old);
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}
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