7 files changed, 9 insertions, 74 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index a02eebcb27..8e7341ba45 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -35,7 +35,6 @@
 #include "catalog/catversion.h"
 #include "catalog/pg_control.h"
 #include "catalog/pg_database.h"
-#include "libpq/pqsignal.h"
 #include "miscadmin.h"
 #include "pgstat.h"
 #include "postmaster/bgwriter.h"
diff --git a/src/backend/libpq/pqsignal.c b/src/backend/libpq/pqsignal.c
index d088daeb7d..b621ba7add 100644
--- a/src/backend/libpq/pqsignal.c
+++ b/src/backend/libpq/pqsignal.c
@@ -1,8 +1,7 @@
 /*-------------------------------------------------------------------------
  *
  * pqsignal.c
- *	  reliable BSD-style signal(2) routine stolen from RWW who stole it
- *	  from Stevens...
+ *	  Backend signal(2) support (see also src/port/pqsignal.c)
  *
  * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
@@ -11,38 +10,11 @@
  * IDENTIFICATION
  *	  src/backend/libpq/pqsignal.c
  *
- * NOTES
- *		This shouldn't be in libpq, but the monitor and some other
- *		things need it...
- *
- *	A NOTE ABOUT SIGNAL HANDLING ACROSS THE VARIOUS PLATFORMS.
- *
- *	pg_config.h defines the macro HAVE_POSIX_SIGNALS for some platforms and
- *	not for others.  This file and pqsignal.h use that macro to decide
- *	how to handle signalling.
- *
- *	signal(2) handling - this is here because it affects some of
- *	the frontend commands as well as the backend processes.
- *
- *	Ultrix and SunOS provide BSD signal(2) semantics by default.
- *
- *	SVID2 and POSIX signal(2) semantics differ from BSD signal(2)
- *	semantics.	We can use the POSIX sigaction(2) on systems that
- *	allow us to request restartable signals (SA_RESTART).
- *
- *	Some systems don't allow restartable signals at all unless we
- *	link to a special BSD library.
- *
- *	We devoutly hope that there aren't any systems that provide
- *	neither POSIX signals nor BSD signals.	The alternative
- *	is to do signal-handler reinstallation, which doesn't work well
- *	at all.
- * ------------------------------------------------------------------------*/
+ * ------------------------------------------------------------------------
+ */
 
 #include "postgres.h"
 
-#include <signal.h>
-
 #include "libpq/pqsignal.h"
 
 
@@ -145,36 +117,3 @@ pqinitmask(void)
 		sigmask(SIGWINCH) | sigmask(SIGFPE);
 #endif
 }
-
-
-/* Win32 signal handling is in backend/port/win32/signal.c */
-#ifndef WIN32
-
-/*
- * Set up a signal handler
- */
-pqsigfunc
-pqsignal(int signo, pqsigfunc func)
-{
-#if !defined(HAVE_POSIX_SIGNALS)
-	return signal(signo, func);
-#else
-	struct sigaction act,
-				oact;
-
-	act.sa_handler = func;
-	sigemptyset(&act.sa_mask);
-	act.sa_flags = 0;
-	if (signo != SIGALRM)
-		act.sa_flags |= SA_RESTART;
-#ifdef SA_NOCLDSTOP
-	if (signo == SIGCHLD)
-		act.sa_flags |= SA_NOCLDSTOP;
-#endif
-	if (sigaction(signo, &act, &oact) < 0)
-		return SIG_ERR;
-	return oact.sa_handler;
-#endif   /* !HAVE_POSIX_SIGNALS */
-}
-
-#endif   /* WIN32 */
diff --git a/src/backend/main/main.c b/src/backend/main/main.c
index 1173bda620..8d4218e00b 100644
--- a/src/backend/main/main.c
+++ b/src/backend/main/main.c
@@ -41,9 +41,6 @@
 #include "utils/help_config.h"
 #include "utils/pg_locale.h"
 #include "utils/ps_status.h"
-#ifdef WIN32
-#include "libpq/pqsignal.h"
-#endif
 
 
 const char *progname;
diff --git a/src/backend/port/win32/signal.c b/src/backend/port/win32/signal.c
index 2c406bc7f2..8b2d98141b 100644
--- a/src/backend/port/win32/signal.c
+++ b/src/backend/port/win32/signal.c
@@ -13,7 +13,7 @@
 
 #include "postgres.h"
 
-#include <libpq/pqsignal.h>
+#include "libpq/pqsignal.h"
 
 /*
  * These are exported for use by the UNBLOCKED_SIGNAL_QUEUE() macro.
@@ -158,7 +158,11 @@ pqsigsetmask(int mask)
 }
 
 
-/* signal manipulation. Only called on main thread, no sync required */
+/*
+ * Unix-like signal handler installation
+ *
+ * Only called on main thread, no sync required
+ */
 pqsigfunc
 pqsignal(int signum, pqsigfunc handler)
 {
diff --git a/src/backend/port/win32/timer.c b/src/backend/port/win32/timer.c
index 1394104456..333beb44a8 100644
--- a/src/backend/port/win32/timer.c
+++ b/src/backend/port/win32/timer.c
@@ -18,8 +18,6 @@
 
 #include "postgres.h"
 
-#include "libpq/pqsignal.h"
-
 
 /* Communication area for inter-thread communication */
 typedef struct timerCA
diff --git a/src/backend/replication/walsender.c b/src/backend/replication/walsender.c
index 266cd64f6f..c05bb1e081 100644
--- a/src/backend/replication/walsender.c
+++ b/src/backend/replication/walsender.c
@@ -49,7 +49,6 @@
 #include "funcapi.h"
 #include "libpq/libpq.h"
 #include "libpq/pqformat.h"
-#include "libpq/pqsignal.h"
 #include "miscadmin.h"
 #include "nodes/replnodes.h"
 #include "replication/basebackup.h"
diff --git a/src/backend/utils/misc/timeout.c b/src/backend/utils/misc/timeout.c
index 2ee6e00ed2..b5a3c8f5df 100644
--- a/src/backend/utils/misc/timeout.c
+++ b/src/backend/utils/misc/timeout.c
@@ -16,7 +16,6 @@
 
 #include <sys/time.h>
 
-#include "libpq/pqsignal.h"
 #include "storage/proc.h"
 #include "utils/timeout.h"
 #include "utils/timestamp.h"