#include <stdint.h>
#include "syscall.h"
#include "libc.h"
+#include "atomic.h"
static int sc_clock_gettime(clockid_t clk, struct timespec *ts)
{
return -1;
}
-weak_alias(sc_clock_gettime, __vdso_clock_gettime);
-
-int (*__cgt)(clockid_t, struct timespec *) = __vdso_clock_gettime;
+void *__vdsosym(const char *, const char *);
int __clock_gettime(clockid_t clk, struct timespec *ts)
{
- /* Conditional is to make this work prior to dynamic linking */
- return __cgt ? __cgt(clk, ts) : sc_clock_gettime(clk, ts);
+#ifdef VDSO_CGT_SYM
+ static int (*cgt)(clockid_t, struct timespec *);
+ if (!cgt) {
+ void *f = __vdsosym(VDSO_CGT_VER, VDSO_CGT_SYM);
+ if (!f) f = (void *)sc_clock_gettime;
+ a_cas_p(&cgt, 0, f);
+ }
+ return cgt(clk, ts);
+#else
+ return sc_clock_gettime(clk, ts);
+#endif
}
weak_alias(__clock_gettime, clock_gettime);