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/*-------------------------------------------------------------------------
*
* pqsignal.h
* Backend signal(2) support (see also src/port/pqsignal.c)
*
* Portions Copyright (c) 1996-2022, 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>
#define PG_SETMASK(mask) sigprocmask(SIG_SETMASK, mask, NULL)
#ifdef WIN32
/* Emulate POSIX sigset_t APIs on Windows */
typedef int sigset_t;
extern int pqsigprocmask(int how, const sigset_t *set, sigset_t *oset);
#define SIG_BLOCK 1
#define SIG_UNBLOCK 2
#define SIG_SETMASK 3
#define sigprocmask(how, set, oset) pqsigprocmask((how), (set), (oset))
#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);
/* pqsigfunc is declared in src/include/port.h */
extern pqsigfunc pqsignal_pm(int signo, pqsigfunc func);
#endif /* PQSIGNAL_H */
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