From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001
From: Reinhard Tartler <siretart@tauware.de>
Date: Mon, 10 Oct 2011 17:43:39 +0200
Subject: Imported nx-X11-3.1.0-1.tar.gz

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository
---
 .../Mesa/src/mesa/drivers/dri/mach64/mach64_lock.h | 104 +++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 nx-X11/extras/Mesa/src/mesa/drivers/dri/mach64/mach64_lock.h

(limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/mach64/mach64_lock.h')

diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/mach64/mach64_lock.h b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mach64/mach64_lock.h
new file mode 100644
index 000000000..973880ee2
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mach64/mach64_lock.h
@@ -0,0 +1,104 @@
+/* $XFree86$ */ /* -*- mode: c; c-basic-offset: 3 -*- */
+/*
+ * Copyright 2000 Gareth Hughes
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * Authors:
+ *	Gareth Hughes <gareth@valinux.com>
+ *
+ */
+
+#ifndef __MACH64_LOCK_H__
+#define __MACH64_LOCK_H__
+
+extern void mach64GetLock( mach64ContextPtr mmesa, GLuint flags );
+
+
+/* Turn DEBUG_LOCKING on to find locking conflicts.
+ */
+#define DEBUG_LOCKING	1
+
+#if DEBUG_LOCKING
+extern char *prevLockFile;
+extern int   prevLockLine;
+
+#define DEBUG_LOCK()							\
+   do {									\
+      prevLockFile = (__FILE__);					\
+      prevLockLine = (__LINE__);					\
+   } while (0)
+
+#define DEBUG_RESET()							\
+   do {									\
+      prevLockFile = 0;							\
+      prevLockLine = 0;							\
+   } while (0)
+
+#define DEBUG_CHECK_LOCK()						\
+   do {									\
+      if ( prevLockFile ) {						\
+	 fprintf( stderr,						\
+		  "LOCK SET!\n\tPrevious %s:%d\n\tCurrent: %s:%d\n",	\
+		  prevLockFile, prevLockLine, __FILE__, __LINE__ );	\
+	 exit( 1 );							\
+      }									\
+   } while (0)
+
+#else
+
+#define DEBUG_LOCK()
+#define DEBUG_RESET()
+#define DEBUG_CHECK_LOCK()
+
+#endif
+
+/*
+ * !!! We may want to separate locks from locks with validation.  This
+ * could be used to improve performance for those things commands that
+ * do not do any drawing !!!
+ */
+
+/* Lock the hardware and validate our state.
+ */
+#define LOCK_HARDWARE( mmesa )						\
+   do {									\
+      char __ret = 0;							\
+      DEBUG_CHECK_LOCK();						\
+      DRM_CAS( mmesa->driHwLock, mmesa->hHWContext,			\
+	       (DRM_LOCK_HELD | mmesa->hHWContext), __ret );		\
+      if ( __ret )							\
+	 mach64GetLock( mmesa, 0 );					\
+      DEBUG_LOCK();							\
+   } while (0)
+
+/* Unlock the hardware.
+ */
+#define UNLOCK_HARDWARE( mmesa )					\
+   do {									\
+      DRM_UNLOCK( mmesa->driFd,						\
+		  mmesa->driHwLock,					\
+		  mmesa->hHWContext );					\
+      DEBUG_RESET();							\
+   } while (0)
+
+#endif /* __MACH64_LOCK_H__ */
-- 
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