From 3ef6d4b553a19b00bac47fdae8917672ec2c2f29 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Fri, 25 Jan 2013 22:04:23 +0100
Subject: Added win32 mutex support.

---
 hugin.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 69 insertions(+), 24 deletions(-)

diff --git a/hugin.c b/hugin.c
index 6aff5b8..98fb276 100644
--- a/hugin.c
+++ b/hugin.c
@@ -38,8 +38,64 @@
 #include <fcntl.h>
 
 #ifdef WITH_HUG_MUTEX
-#include <pthread.h>
+# ifdef WIN32
+#  include <windows.h>
+typedef HANDLE mutex_t;
+# else
+#  include <pthread.h>
+typedef pthread_mutex_t mutex_t;
+# endif
+
+void mutex_init(mutex_t *mutex)
+{
+#ifdef WIN32
+  *mutex = CreateMutex(NULL,  // default security attributes
+                       FALSE, // initially not owned
+                       NULL); // unnamed mutex
+#else
+  pthread_mutex_init (mutex, NULL);
+#endif
+}
+
+void mutex_close(mutex_t *mutex)
+{
+#ifdef WIN32
+  CloseHandle(*mutex);
+#else
+  pthread_mutex_destroy(mutex);
 #endif
+}
+
+void mutex_lock(mutex_t *mutex)
+{
+#ifdef WIN32
+  WaitForSingleObject(*mutex, // handle to mutex
+                      INFINITE);  // no time-out interval
+#else
+  pthread_mutex_lock(mutex);
+#endif
+}
+
+void mutex_unlock(mutex_t *mutex)
+{
+#ifdef WIN32
+  ReleaseMutex(*mutex);
+#else
+  pthread_mutex_unlock(mutex);
+#endif
+}
+
+#else/*WITH_HUG_MUTEX*/
+
+typedef int mutex_t;
+void mutex_init(mutex_t *mutex) {}
+void mutex_close(mutex_t *mutex) {}
+void mutex_lock(mutex_t *mutex) {}
+void mutex_unlock(mutex_t *mutex) {}
+
+#endif/*WITH_HUG_MUTEX*/
+
+mutex_t localtime_mutex;
 
 #ifdef WITH_HUG_FILTER
 #include "hugin_filter.h"
@@ -54,9 +110,7 @@ struct hug_config_t {
   int fd;
   int file_fd;
   int stdout_no_date;
-#ifdef WITH_HUG_MUTEX
-  pthread_mutex_t mutex;
-#endif
+  mutex_t mutex; 
 #ifdef WITH_HUG_SYSLOG
   const char* syslog_host;
   int syslog_port;
@@ -66,9 +120,9 @@ struct hug_config_t {
   -1, // fd
   -1, // file_fd
   0, //stdout_no_date
-#ifdef WITH_HUG_MUTEX
-  {}, // mutex;
-#endif
+  //#ifdef WITH_HUG_MUTEX
+  0, // mutex;
+  //#endif
 #ifdef WITH_HUG_SYSLOG
   "", // syslog_host;
   -1, // syslog_port;
@@ -81,26 +135,17 @@ struct hug_config_t {
   */
 }; 
 
-#ifdef WITH_HUG_MUTEX
-  pthread_mutex_t localtime_mutex;
-#endif
-
 struct tm *hug_localtime(const time_t *timep, struct tm *result)
 {
   struct tm *res = NULL;
-#ifdef WITH_HUG_MUTEX
-  pthread_mutex_lock(&localtime_mutex);
-#endif
+  mutex_lock(&localtime_mutex);
 
 	if(timep && result) {
     memcpy(result,localtime(timep),sizeof(*result)); 
     res = result;
   }
 
-#ifdef WITH_HUG_MUTEX
-  pthread_mutex_unlock(&localtime_mutex);
-#endif
-
+  mutex_unlock(&localtime_mutex);
   return res;
 }
 
@@ -109,10 +154,10 @@ static void hug_mutex_init()
 {
 #ifdef WITH_HUG_MUTEX
   if(hug_config.flags & HUG_FLAG_USE_MUTEX) {
-    pthread_mutex_init(&hug_config.mutex, NULL);
+    mutex_init(&hug_config.mutex);
   }
 
-  pthread_mutex_init(&localtime_mutex, NULL);
+  mutex_init(&localtime_mutex);
 #endif
 }
 
@@ -120,7 +165,7 @@ static void hug_mutex_lock()
 {
 #ifdef WITH_HUG_MUTEX
   if(hug_config.flags & HUG_FLAG_USE_MUTEX) {
-    pthread_mutex_lock(&hug_config.mutex);
+    mutex_lock(&hug_config.mutex);
   }
 #endif
 }
@@ -129,7 +174,7 @@ static void hug_mutex_unlock()
 {
 #ifdef WITH_HUG_MUTEX
   if(hug_config.flags & HUG_FLAG_USE_MUTEX) {
-    pthread_mutex_unlock(&hug_config.mutex);
+    mutex_unlock(&hug_config.mutex);
   }
 #endif
 }
@@ -141,10 +186,10 @@ static void hug_mutex_close()
     // Make sure we don't destroy the mutex while another thread is using it.
     hug_mutex_lock();
     hug_mutex_unlock();
-    pthread_mutex_destroy(&hug_config.mutex);
+    mutex_close(&hug_config.mutex);
   }
   
-  pthread_mutex_destroy(&localtime_mutex);
+  mutex_close(&localtime_mutex);
 #endif
 }
 
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