From 49f67c066a2a1e4ed52066245078be055c5ad817 Mon Sep 17 00:00:00 2001
From: heikki <heikki>
Date: Wed, 18 Mar 2009 08:44:49 +0000
Subject: [PATCH] Fix Windows-specific race condition in syslogger. This
 could've been the cause of the "could not write to log file: Bad file
 descriptor" errors reported at
 http://archives.postgresql.org//pgsql-general/2008-06/msg00193.php

Backpatch to 8.3, the race condition was introduced by the CSV logging
patch.

Analysis and patch by Gurjeet Singh.
---
 src/backend/postmaster/syslogger.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/backend/postmaster/syslogger.c b/src/backend/postmaster/syslogger.c
index 0f8d93a968..1b7c3bfa31 100644
--- a/src/backend/postmaster/syslogger.c
+++ b/src/backend/postmaster/syslogger.c
@@ -907,13 +907,14 @@ write_syslogger_file(const char *buffer, int count, int destination)
 	if (destination == LOG_DESTINATION_CSVLOG && csvlogFile == NULL)
 		open_csvlogfile();
 
-	logfile = destination == LOG_DESTINATION_CSVLOG ? csvlogFile : syslogFile;
-
-#ifndef WIN32
-	rc = fwrite(buffer, 1, count, logfile);
-#else
+#ifdef WIN32
 	EnterCriticalSection(&sysfileSection);
+#endif
+
+	logfile = destination == LOG_DESTINATION_CSVLOG ? csvlogFile : syslogFile;
 	rc = fwrite(buffer, 1, count, logfile);
+
+#ifdef WIN32
 	LeaveCriticalSection(&sysfileSection);
 #endif
 
-- 
2.11.4.GIT