The Quake III Arena sources as originally released under the GPL license on August 20, 2005.

common/mutex.c

@@ -0,0 +1,197 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code 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.
+
+Quake III Arena source code 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "cmdlib.h"
+#include "threads.h"
+#include "mutex.h"
+
+/*
+===================================================================
+
+WIN32
+
+===================================================================
+*/
+#ifdef WIN32
+
+#define	USED
+
+#include <windows.h>
+
+void MutexLock (mutex_t *m)
+{
+	CRITICAL_SECTION *crit;
+
+	if (!m)
+		return;
+	crit = (CRITICAL_SECTION *) m;
+	EnterCriticalSection (crit);
+}
+
+void MutexUnlock (mutex_t *m)
+{
+	CRITICAL_SECTION *crit;
+
+	if (!m)
+		return;
+	crit = (CRITICAL_SECTION *) m;
+	LeaveCriticalSection (crit);
+}
+
+mutex_t *MutexAlloc(void)
+{
+	CRITICAL_SECTION *crit;
+
+	if (numthreads == 1)
+		return NULL;
+	crit = (CRITICAL_SECTION *) malloc(sizeof(CRITICAL_SECTION));
+	InitializeCriticalSection (crit);
+	return (void *) crit;
+}
+
+#endif
+
+/*
+===================================================================
+
+OSF1
+
+===================================================================
+*/
+
+#ifdef __osf__
+#define	USED
+
+#include <pthread.h>
+
+void MutexLock (mutex_t *m)
+{
+	pthread_mutex_t	*my_mutex;
+
+	if (!m)
+		return;
+	my_mutex = (pthread_mutex_t *) m;
+	pthread_mutex_lock (my_mutex);
+}
+
+void MutexUnlock (mutex_t *m)
+{
+	pthread_mutex_t	*my_mutex;
+
+	if (!m)
+		return;
+	my_mutex = (pthread_mutex_t *) m;
+	pthread_mutex_unlock (my_mutex);
+}
+
+mutex_t *MutexAlloc(void)
+{
+	pthread_mutex_t	*my_mutex;
+	pthread_mutexattr_t	mattrib;
+
+	if (numthreads == 1)
+		return NULL;
+	my_mutex = malloc (sizeof(*my_mutex));
+	if (pthread_mutexattr_create (&mattrib) == -1)
+		Error ("pthread_mutex_attr_create failed");
+	if (pthread_mutexattr_setkind_np (&mattrib, MUTEX_FAST_NP) == -1)
+		Error ("pthread_mutexattr_setkind_np failed");
+	if (pthread_mutex_init (my_mutex, mattrib) == -1)
+		Error ("pthread_mutex_init failed");
+	return (void *) my_mutex;
+}
+
+#endif
+
+/*
+===================================================================
+
+IRIX
+
+===================================================================
+*/
+
+#ifdef _MIPS_ISA 
+#define	USED
+
+#include <task.h>
+#include <abi_mutex.h>
+#include <sys/types.h>
+#include <sys/prctl.h>
+
+void MutexLock (mutex_t *m)
+{
+	abilock_t *lck;
+
+	if (!m)
+		return;
+	lck = (abilock_t *) m;
+	spin_lock (lck);
+}
+
+void MutexUnlock (mutex_t *m)
+{
+	abilock_t *lck;
+
+	if (!m)
+		return;
+	lck = (abilock_t *) m;
+	release_lock (lck);
+}
+
+mutex_t *MutexAlloc(void)
+{
+	abilock_t *lck;
+
+	if (numthreads == 1)
+		return NULL;
+	lck = (abilock_t *) malloc(sizeof(abilock_t));
+	init_lock (lck);
+	return (void *) lck;
+}
+
+#endif
+
+/*
+=======================================================================
+
+  SINGLE THREAD
+
+=======================================================================
+*/
+
+#ifndef USED
+
+void MutexLock (mutex_t *m)
+{
+}
+
+void MutexUnlock (mutex_t *m)
+{
+}
+
+mutex_t *MutexAlloc(void)
+{
+	return NULL;
+}
+
+#endif