zig/lib/libc/musl/src/thread/pthread_sigmask.c
Andrew Kelley 49d1a4c562 move lib dirs to lib subdir
also start prefering NtDll API. so far:
 * NtQueryInformationFile
 * NtClose

adds a performance workaround for windows unicode conversion. but that
should probably be removed before merging
2019-07-15 17:54:50 -04:00

20 lines
470 B
C

#include <signal.h>
#include <errno.h>
#include "syscall.h"
int pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict old)
{
int ret;
if (set && (unsigned)how - SIG_BLOCK > 2U) return EINVAL;
ret = -__syscall(SYS_rt_sigprocmask, how, set, old, _NSIG/8);
if (!ret && old) {
if (sizeof old->__bits[0] == 8) {
old->__bits[0] &= ~0x380000000ULL;
} else {
old->__bits[0] &= ~0x80000000UL;
old->__bits[1] &= ~0x3UL;
}
}
return ret;
}