Merged silc_1_0_branch to trunk.

[silc.git] / lib / silcutil / win32 / silcwin32mutex.c

diff --git a/lib/silcutil/win32/silcwin32mutex.c b/lib/silcutil/win32/silcwin32mutex.c
index 11c03c9c8e354ff7ca985f7f4a603f9e0412e9bd..09e8e90ab01774d1edd5db1f1d13d80cb14c85eb 100644 (file)
--- a/lib/silcutil/win32/silcwin32mutex.c
+++ b/lib/silcutil/win32/silcwin32mutex.c
@@ -4,13 +4,12 @@
 
   Author: Pekka Riikonen <priikone@silcnet.org>
 
-  Copyright (C) 2001 Pekka Riikonen
+  Copyright (C) 2001 - 2005 Pekka Riikonen
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-  
+  the Free Software Foundation; version 2 of the License.
+
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ -22,9 +21,9 @@
 #include "silcincludes.h"
 
 /* SILC Mutex structure */
-struct SilcMutexStruct {       
+struct SilcMutexStruct {
 #ifdef SILC_THREADS
-  CRITICAL_SECTION mutex;  
+  CRITICAL_SECTION mutex;
   BOOL locked;
 #else
   void *tmp;
@@ -34,8 +33,8 @@ struct SilcMutexStruct {
 bool silc_mutex_alloc(SilcMutex *mutex)
 {
 #ifdef SILC_THREADS
-  *mutex = silc_calloc(1, sizeof(**mutex));  
-  InitializeCriticalSection(&((*mutex)->mutex));  
+  *mutex = silc_calloc(1, sizeof(**mutex));
+  InitializeCriticalSection(&((*mutex)->mutex));
 #endif /* SILC_THREADS */
   return TRUE;
 }
@@ -43,25 +42,31 @@ bool silc_mutex_alloc(SilcMutex *mutex)
 void silc_mutex_free(SilcMutex mutex)
 {
 #ifdef SILC_THREADS
-  DeleteCriticalSection(&mutex->mutex);
-  silc_free(mutex);
+  if (mutex) {
+    DeleteCriticalSection(&mutex->mutex);
+    silc_free(mutex);
+  }
 #endif /* SILC_THREADS */
 }
 
 void silc_mutex_lock(SilcMutex mutex)
 {
 #ifdef SILC_THREADS
-  EnterCriticalSection(&mutex->mutex);    
-  assert(mutex->locked == FALSE);
-  mutex->locked = TRUE;
+  if (mutex) {
+    EnterCriticalSection(&mutex->mutex);
+    assert(mutex->locked == FALSE);
+    mutex->locked = TRUE;
+  }
 #endif /* SILC_THREADS */
 }
 
 void silc_mutex_unlock(SilcMutex mutex)
 {
 #ifdef SILC_THREADS
-  assert(mutex->locked == TRUE);
-  mutex->locked = FALSE;
-  LeaveCriticalSection(&mutex->mutex);       
+  if (mutex) {
+    assert(mutex->locked == TRUE);
+    mutex->locked = FALSE;
+    LeaveCriticalSection(&mutex->mutex);
+  }
 #endif /* SILC_THREADS */
 }