[babl] Added a BablMutex type.

[Øyvind Kolås <ok src gnome org>]

commit 78b93e2c04ad92e52fe0b7e9ef19caacb55c95a6
Author: �yvind Kolås <pippin gimp org>
Date:   Sat Nov 21 15:55:11 2009 +0000

    Added a BablMutex type.
    
    Mutex abstraction for internal use pthreads by default and critical
    sections on win32.

 babl/Makefile.am     |    2 +
 babl/babl-internal.h |    1 +
 babl/babl-mutex.c    |   67 ++++++++++++++++++++++++++++++++++++++++++++++++++
 babl/babl-mutex.h    |   40 +++++++++++++++++++++++++++++
 4 files changed, 110 insertions(+), 0 deletions(-)
---
diff --git a/babl/Makefile.am b/babl/Makefile.am
index bc5b9ec..d62125c 100644
--- a/babl/Makefile.am
+++ b/babl/Makefile.am
@@ -27,6 +27,7 @@ c_sources =				\
 	babl-list.c			\
 	babl-memory.c			\
 	babl-model.c			\
+	babl-mutex.c			\
 	babl-sampling.c			\
 	babl-sanity.c			\
 	babl-type.c			\
@@ -53,6 +54,7 @@ h_sources  =				\
 	babl-macros.h			\
 	babl-memory.h			\
 	babl-model.h			\
+	babl-mutex.h			\
 	babl-sampling.h			\
 	babl-type.h			\
 	babl-types.h			\
diff --git a/babl/babl-internal.h b/babl/babl-internal.h
index 1323c12..bb71c2d 100644
--- a/babl/babl-internal.h
+++ b/babl/babl-internal.h
@@ -49,6 +49,7 @@
 #include "babl-ids.h"
 #include "babl-util.h"
 #include "babl-memory.h"
+#include "babl-mutex.h"
 #include "babl-cpuaccel.h"
 
 /* redefining some functions for the win32 platform */
diff --git a/babl/babl-mutex.c b/babl/babl-mutex.c
new file mode 100644
index 0000000..99c8615
--- /dev/null
+++ b/babl/babl-mutex.c
@@ -0,0 +1,67 @@
+/* babl - dynamically extendable universal pixel conversion library.
+ * Copyright (C) 2009, �yvind Kolås.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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 GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "babl-mutex.h"
+
+BablMutex  *
+babl_mutex_new (void)
+{
+  BablMutex *mutex = malloc (sizeof (BablMutex));
+#ifdef WIN32
+  InitializeCriticalSection (mutex);
+#else
+  pthread_mutex_init (mutex, NULL);
+#endif
+  return mutex;
+}
+
+void
+babl_mutex_destroy (BablMutex *mutex)
+{
+#ifdef WIN32
+  DeleteCriticalSection (mutex);
+#else
+  pthread_mutex_destroy(mutex);
+#endif
+  free (mutex);
+}
+
+void
+babl_mutex_lock (BablMutex *mutex)
+{
+#ifdef WIN32
+  EnterCriticalSection (mutex);
+#else
+  pthread_mutex_lock (mutex);
+#endif
+}
+
+void
+babl_mutex_unlock (BablMutex *mutex)
+{
+#ifdef WIN32
+  LeaveCriticalSection (mutex);
+#else
+  pthread_mutex_unlock (mutex);
+#endif
+}
diff --git a/babl/babl-mutex.h b/babl/babl-mutex.h
new file mode 100644
index 0000000..a73e480
--- /dev/null
+++ b/babl/babl-mutex.h
@@ -0,0 +1,40 @@
+/* babl - dynamically extendable universal pixel conversion library.
+ * Copyright (C) 2009, �yvind Kolås.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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 GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _BABL_MUTEX_H
+#define _BABL_MUTEX_H
+
+#ifndef WIN32
+#define __USE_GNU 1
+#include <pthread.h>
+#else
+#include <windows.h>
+#endif
+
+#ifdef WIN32
+  typedef  CriticalSection   BablMutex;
+#else
+  typedef  pthread_mutex_t   BablMutex;
+#endif
+
+BablMutex* babl_mutex_new     (void);
+void       babl_mutex_destroy (BablMutex *mutex);
+void       babl_mutex_lock    (BablMutex *mutex);
+void       babl_mutex_unlock  (BablMutex *mutex);
+
+#endif