From 4beaf8200aa658c15d2b138d1754983a7eb253e3 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 23 Jun 2012 22:25:58 +0000
Subject: [PATCH] -LRN: Lock the output on W32:   Purely W32 patch. It was
 needed for some threading-related debugging i did for select() wrapper.
 Shouldn't harm to have it, in case i do logging from multiple threads again.

---
 src/util/common_logging.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/util/common_logging.c b/src/util/common_logging.c
index 20f852c35..6c3dda9bc 100644
--- a/src/util/common_logging.c
+++ b/src/util/common_logging.c
@@ -737,6 +737,10 @@ GNUNET_logger_remove (GNUNET_Logger logger, void *logger_cls)
   GNUNET_free (pos);
 }
 
+#if WINDOWS
+CRITICAL_SECTION output_message_cs;
+#endif
+
 
 /**
  * Actually output the log message.
@@ -751,7 +755,9 @@ output_message (enum GNUNET_ErrorType kind, const char *comp,
                 const char *datestr, const char *msg)
 {
   struct CustomLogger *pos;
-
+#if WINDOWS
+  EnterCriticalSection (&output_message_cs);
+#endif
   if (NULL != GNUNET_stderr)
   {
     FPRINTF (GNUNET_stderr, "%s %s %s %s", datestr, comp,
@@ -764,6 +770,9 @@ output_message (enum GNUNET_ErrorType kind, const char *comp,
     pos->logger (pos->logger_cls, kind, comp, datestr, msg);
     pos = pos->next;
   }
+#if WINDOWS
+  LeaveCriticalSection (&output_message_cs);
+#endif
 }
 
 
@@ -1141,6 +1150,10 @@ void __attribute__ ((constructor)) GNUNET_util_cl_init ()
 #ifdef MINGW
   GNInitWinEnv (NULL);
 #endif
+#if WINDOWS
+  if (!InitializeCriticalSectionAndSpinCount (&output_message_cs, 0x00000400))
+    GNUNET_abort ();
+#endif
 }
 
 
@@ -1149,6 +1162,9 @@ void __attribute__ ((constructor)) GNUNET_util_cl_init ()
  */
 void __attribute__ ((destructor)) GNUNET_util_cl_fini ()
 {
+#if WINDOWS
+  DeleteCriticalSection (&output_message_cs);
+#endif
 #ifdef MINGW
   GNShutdownWinEnv ();
 #endif
-- 
2.25.1