From ad4f06aeb25bb5115971eff566d036b0c820233e Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 14 Feb 2005 23:02:03 +0000
Subject: [PATCH] Improve documentation of signal usage for HAVE_SIGPROCMASK
 and non-HAVE_SIGPROCMASK cases in pqinitmask().

---
 src/backend/libpq/pqsignal.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/backend/libpq/pqsignal.c b/src/backend/libpq/pqsignal.c
index 3d470d1050..00bfecdc54 100644
--- a/src/backend/libpq/pqsignal.c
+++ b/src/backend/libpq/pqsignal.c
@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/libpq/pqsignal.c,v 1.38 2004/12/31 21:59:50 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/backend/libpq/pqsignal.c,v 1.39 2005/02/14 23:02:03 momjian Exp $
  *
  * NOTES
  *		This shouldn't be in libpq, but the monitor and some other
@@ -75,7 +75,10 @@ void
 pqinitmask(void)
 {
 #ifdef HAVE_SIGPROCMASK
+
 	sigemptyset(&UnBlockSig);
+
+	/* First set all signals, then clear some. */
 	sigfillset(&BlockSig);
 	sigfillset(&AuthBlockSig);
 
@@ -126,6 +129,7 @@ pqinitmask(void)
 	sigdelset(&AuthBlockSig, SIGALRM);
 #endif
 #else
+	/* Set the signals we want. */
 	UnBlockSig = 0;
 	BlockSig = sigmask(SIGHUP) | sigmask(SIGQUIT) |
 		sigmask(SIGTERM) | sigmask(SIGALRM) |
-- 
2.40.0