medfall

commit 01c3a5746d8422addfb3a67775a0cccd5db2d714
parent 947864ac502ee07207f5188d508339947affa7f3
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Wed Sep 14 20:53:53 +0100

platform_mutex.h/unix_mutex.h

Diffstat:
platform_mutex.h
 | 
10
++++++++++
unix_mutex.h
 | 
40
++++++++++++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/platform_mutex.h b/platform_mutex.h
@@ -0,0 +1,10 @@
+#ifndef _PLATFORM_MUTEX_H_
+#define _PLATFORM_MUTEX_H_
+
+#if defined( __linux__ )
+#include "unix_mutex.h"
+#else
+#error new platform
+#endif
+
+#endif // _PLATFORM_MUTEX_H_
diff --git a/unix_mutex.h b/unix_mutex.h
@@ -0,0 +1,40 @@
+#ifndef _UNIX_MUTEX_H_
+#define _UNIX_MUTEX_H_
+
+#include <err.h>
+#include <pthread.h>
+
+struct Mutex {
+	pthread_mutex_t mutex;
+};
+
+inline void mutex_init( Mutex * mutex ) {
+	int ok = pthread_mutex_init( &mutex->mutex, NULL );
+	if( ok != 0 ) {
+		err( 1, "pthread_mutex_init: %d", ok );
+	}
+}
+
+inline void mutex_lock( Mutex * mutex ) {
+	int ok = pthread_mutex_lock( &mutex->mutex );
+	if( ok != 0 ) {
+		err( 1, "pthread_mutex_lock: %d", ok );
+	}
+}
+
+inline bool mutex_trylock( Mutex * mutex ) {
+	int ok = pthread_mutex_trylock( &mutex->mutex );
+	if( ok == 0 ) return true;
+	if( ok == EBUSY ) return false;
+
+	err( 1, "pthread_mutex_lock: %d", ok );
+}
+
+inline void mutex_unlock( Mutex * mutex ) {
+	int ok = pthread_mutex_unlock( &mutex->mutex );
+	if( ok != 0 ) {
+		err( 1, "pthread_mutex_unlock: %d", ok );
+	}
+}
+
+#endif // _UNIX_MUTEX_H_