greenplumn pqsignal 源码
greenplumn pqsignal 代码
文件路径：/src/include/libpq/pqsignal.h
/*-------------------------------------------------------------------------
*
* pqsignal.h
* Backend signal(2) support (see also src/port/pqsignal.c)
*
* Portions Copyright (c) 1996-2019, 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>
#ifndef WIN32
#define PG_SETMASK(mask) sigprocmask(SIG_SETMASK, mask, NULL)
#else
/* Emulate POSIX sigset_t APIs on Windows */
typedef int sigset_t;
extern int pqsigsetmask(int mask);
#define PG_SETMASK(mask) pqsigsetmask(*(mask))
#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 sigset_t UnBlockSig,
BlockSig,
StartupBlockSig;
extern void pqinitmask(void);
#endif /* PQSIGNAL_H */
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