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| | #include <time.h>
#include <errno.h>
#include <stdint.h>
#include "syscall.h"
#include "libc.h"
#include "atomic.h"
static int sc_clock_gettime(clockid_t clk, struct timespec *ts)
{
return __syscall(SYS_clock_gettime, clk, ts);
}
static int sc_gettimeofday(clockid_t clk, struct timespec *ts)
{
if (clk != CLOCK_REALTIME)
return EINVAL;
__syscall(SYS_gettimeofday, ts, 0);
ts->tv_nsec = (int)ts->tv_nsec * 1000;
return 0;
}
void *__vdsosym(const char *, const char *);
int __clock_gettime(clockid_t clk, struct timespec *ts)
{
static int (*cgt)(clockid_t, struct timespec *);
if (!cgt) {
int (*f)(clockid_t, struct timespec *) = 0;
#ifdef VDSO_CGT_SYM
f = __vdsosym(VDSO_CGT_VER, VDSO_CGT_SYM);
#endif
if (!f) {
int r = sc_clock_gettime(clk, ts);
if (r == -ENOSYS) {
f = sc_gettimeofday;
} else {
a_cas_p(&cgt, 0, sc_clock_gettime);
return r;
}
}
a_cas_p(&cgt, 0, f);
}
return cgt(clk, ts);
}
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