From 663631725ee2d633d9ec5821cd48953ffd188d00 Mon Sep 17 00:00:00 2001
From: ftrapero <frantracer@gmail.com>
Date: Tue, 27 Jun 2017 12:08:38 +0200
Subject: Squashed 'nx-X11/extras/Mesa_6.4.2/' content from commit 475b1f7

git-subtree-dir: nx-X11/extras/Mesa_6.4.2
git-subtree-split: 475b1f7b56fa36ef4f3b22a749f88a98ddc0d502
---
 .../slang/OGLCompilersDLL/Initialisation.cpp       | 151 +++++++++++++++++++++
 1 file changed, 151 insertions(+)
 create mode 100755 src/mesa/shader/slang/OGLCompilersDLL/Initialisation.cpp

(limited to 'src/mesa/shader/slang/OGLCompilersDLL/Initialisation.cpp')

diff --git a/src/mesa/shader/slang/OGLCompilersDLL/Initialisation.cpp b/src/mesa/shader/slang/OGLCompilersDLL/Initialisation.cpp
new file mode 100755
index 000000000..2e6f8c69b
--- /dev/null
+++ b/src/mesa/shader/slang/OGLCompilersDLL/Initialisation.cpp
@@ -0,0 +1,151 @@
+//
+//Copyright (C) 2002-2005  3Dlabs Inc. Ltd.
+//All rights reserved.
+//
+//Redistribution and use in source and binary forms, with or without
+//modification, are permitted provided that the following conditions
+//are met:
+//
+//    Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//
+//    Redistributions in binary form must reproduce the above
+//    copyright notice, this list of conditions and the following
+//    disclaimer in the documentation and/or other materials provided
+//    with the distribution.
+//
+//    Neither the name of 3Dlabs Inc. Ltd. nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+//POSSIBILITY OF SUCH DAMAGE.
+//
+
+#define SH_EXPORTING
+#include "Initialisation.h"
+#include "Include/InitializeGlobals.h"
+#include "Include/InitializeParseContext.h"
+#include "Public/ShaderLang.h"
+
+OS_TLSIndex GlobalProcessFlag   = OS_INVALID_TLS_INDEX;
+
+bool InitProcess()
+{
+    if (GlobalProcessFlag != OS_INVALID_TLS_INDEX) {
+        //
+        // Function is re-entrant.
+        //
+        return true;
+    }
+
+    GlobalProcessFlag = OS_AllocTLSIndex();
+
+    if (GlobalProcessFlag == OS_INVALID_TLS_INDEX) {
+        assert (0 && "InitProcess(): Failed to allocate TLS area for init flag");
+        return false;
+    }
+
+    if (!InitializePoolIndex()) {
+        assert (0 && "InitProcess(): Failed to initalize global pool");
+        return false;
+    }
+
+    if (!InitializeParseContextIndex()) {
+        assert (0 && "InitProcess(): Failed to initalize parse context");
+        return false;
+    }
+
+    InitThread();
+    return true;
+}
+
+
+bool InitThread()
+{
+    //
+    // This function is re-entrant
+    //
+    if (GlobalProcessFlag == OS_INVALID_TLS_INDEX) {
+        assert(0 && "InitThread(): Process hasn't been initalised.");
+        return false;
+    }
+
+    if (OS_GetTLSValue(GlobalProcessFlag) != 0) {
+        return true;
+    }
+
+    InitializeGlobalPools();
+
+    if(!InitializeGlobalParseContext()) 
+        return false;
+
+    if(!OS_SetTLSValue(GlobalProcessFlag, (void *)1)) {
+        assert(0 && "InitThread(): Unable to set init flag.");
+        return false;
+    }
+
+    return true;
+}
+
+
+bool DetachThread()
+{
+    bool retFlag = true;
+
+    if (GlobalProcessFlag == OS_INVALID_TLS_INDEX) {
+        assert(0 && "DetachThread(): Process hasn't been initalised.");
+        return false;
+    }
+
+    //
+    // Function is re-entrant and this thread may not have been initalised.
+    //
+    if (OS_GetTLSValue(GlobalProcessFlag) != 0)
+    {
+        if(!OS_SetTLSValue(GlobalProcessFlag, (void *)0)) {
+            assert(0 && "DetachThread(): Unable to clear init flag.");
+            retFlag = false;
+        }
+
+        FreeGlobalPools();
+
+        if (!FreeParseContext())
+            retFlag = false;
+    }
+
+    return retFlag;
+}
+
+bool DetachProcess()
+{
+    bool retFlag = true;
+
+    if (GlobalProcessFlag == OS_INVALID_TLS_INDEX)
+        return true;
+    
+    ShFinalize();
+
+    retFlag = DetachThread();
+
+    FreePoolIndex();
+
+    if(!FreeParseContextIndex())
+        retFlag = false;
+
+    OS_FreeTLSIndex(GlobalProcessFlag);
+    GlobalProcessFlag = OS_INVALID_TLS_INDEX;
+
+    return retFlag;
+}
+
-- 
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