1 files changed, 54 insertions, 0 deletions
diff --git a/src/include/libpq/pqsignal.h b/src/include/libpq/pqsignal.h
new file mode 100644
index 0000000..023bcd1
--- /dev/null
+++ b/src/include/libpq/pqsignal.h
@@ -0,0 +1,54 @@
+/*-------------------------------------------------------------------------
+ *
+ * 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 */