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#include <bits/sigset_t.h>
#include <bits/ensure.h>
int sigemptyset(sigset_t *sigset) {
*sigset = 0;
return 0;
}
int sigfillset(sigset_t *sigset) {
*sigset = ~sigset_t(0);
return 0;
}
// TODO: Return EINVAL instead of __ensure()ing.
int sigaddset(sigset_t *sigset, int sig) {
int signo = sig - 1;
// TODO: do not hard code CHAR_BITS
__ensure((unsigned int)signo < sizeof(sigset_t) * 8);
*sigset |= sigset_t(1) << signo;
return 0;
}
int sigdelset(sigset_t *sigset, int sig) {
int signo = sig - 1;
// TODO: do not hard code CHAR_BITS
__ensure((unsigned int)signo < sizeof(sigset_t) * 8);
*sigset &= ~(sigset_t(1) << signo);
return 0;
}
int sigismember(const sigset_t *set, int sig) {
int signo = sig - 1;
// TODO: do not hard code CHAR_BITS
__ensure((unsigned int)signo < sizeof(sigset_t) * 8);
return (*set) & (sigset_t(1) << signo);
}
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