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/*-------------------------------------------------------------------------
*
* pqsignal.h
* Backend signal(2) support (see also src/port/pqsignal.c)
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/libpq/pqsignal.h
*
*-------------------------------------------------------------------------
*/
#ifndef PQSIGNAL_H
#define PQSIGNAL_H
#include <signal.h>
#ifdef WIN32
/* Emulate POSIX sigset_t APIs on Windows */
typedef int sigset_t;
#define SA_RESTART 1
#define SA_NODEFER 2
struct sigaction
{
void (*sa_handler) (int);
/* sa_sigaction not yet implemented */
sigset_t sa_mask;
int sa_flags;
};
extern int pqsigprocmask(int how, const sigset_t *set, sigset_t *oset);
extern int pqsigaction(int signum, const struct sigaction *act,
struct sigaction *oldact);
#define SIG_BLOCK 1
#define SIG_UNBLOCK 2
#define SIG_SETMASK 3
#define sigprocmask(how, set, oset) pqsigprocmask((how), (set), (oset))
#define sigaction(signum, act, oldact) pqsigaction((signum), (act), (oldact))
#define sigemptyset(set) (*(set) = 0)
#define sigfillset(set) (*(set) = ~0)
#define sigaddset(set, signum) (*(set) |= (sigmask(signum)))
#define sigdelset(set, signum) (*(set) &= ~(sigmask(signum)))
#endif /* WIN32 */
extern PGDLLIMPORT sigset_t UnBlockSig;
extern PGDLLIMPORT sigset_t BlockSig;
extern PGDLLIMPORT sigset_t StartupBlockSig;
extern void pqinitmask(void);
#endif /* PQSIGNAL_H */
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