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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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53
libc/calls/sigbits.h Normal file
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#ifndef COSMOPOLITAN_LIBC_CALLS_SIGBITS_H_
#define COSMOPOLITAN_LIBC_CALLS_SIGBITS_H_
#include "libc/bits/bits.h"
#include "libc/bits/progn.h"
#include "libc/str/str.h"
#include "libc/calls/struct/sigset.h"
#include "libc/sysv/errfuns.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct sigset;
int sigaddset(struct sigset *, int) paramsnonnull();
int sigdelset(struct sigset *, int) paramsnonnull();
int sigemptyset(struct sigset *) paramsnonnull();
int sigfillset(struct sigset *) paramsnonnull();
int sigismember(const struct sigset *, int) paramsnonnull() nosideeffect;
#define sigemptyset(SET) \
({ \
memset((SET), 0, sizeof(struct sigset)); \
0; \
})
#define sigfillset(SET) \
({ \
memset((SET), -1, sizeof(struct sigset)); \
0; \
})
#define sigaddset(SET, SIG) \
({ \
int Sig = (SIG); \
__IsValidSignal(Sig) ? PROGN(bts((SET)->sig, Sig - 1), 0) : einval(); \
})
#define sigdelset(SET, SIG) \
({ \
int Sig = (SIG); \
__IsValidSignal(Sig) ? PROGN(btr((SET)->sig, Sig - 1), 0) : einval(); \
})
#define sigismember(SET, SIG) \
({ \
int Sig = (SIG); \
__IsValidSignal(Sig) ? bt((SET)->sig, Sig - 1) : einval(); \
})
#define __IsValidSignal(SIG) (1 <= (SIG) && (SIG) <= NSIG)
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_SIGBITS_H_ */