diff options
Diffstat (limited to 'chromium/third_party/glslang/src/OGLCompilersDLL/InitializeDll.cpp')
-rw-r--r-- | chromium/third_party/glslang/src/OGLCompilersDLL/InitializeDll.cpp | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/chromium/third_party/glslang/src/OGLCompilersDLL/InitializeDll.cpp b/chromium/third_party/glslang/src/OGLCompilersDLL/InitializeDll.cpp new file mode 100644 index 00000000000..cc2b742ed50 --- /dev/null +++ b/chromium/third_party/glslang/src/OGLCompilersDLL/InitializeDll.cpp @@ -0,0 +1,155 @@ +// +//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 <assert.h> + +#include "InitializeDll.h" +#include "../glslang/Include/InitializeGlobals.h" + +#include "../glslang/Public/ShaderLang.h" + +namespace glslang { + +OS_TLSIndex ThreadInitializeIndex = OS_INVALID_TLS_INDEX; + +bool InitProcess() +{ + glslang::GetGlobalLock(); + + if (ThreadInitializeIndex != OS_INVALID_TLS_INDEX) { + // + // Function is re-entrant. + // + + glslang::ReleaseGlobalLock(); + return true; + } + + ThreadInitializeIndex = OS_AllocTLSIndex(); + + if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) { + assert(0 && "InitProcess(): Failed to allocate TLS area for init flag"); + + glslang::ReleaseGlobalLock(); + return false; + } + + if (! InitializePoolIndex()) { + assert(0 && "InitProcess(): Failed to initialize global pool"); + + glslang::ReleaseGlobalLock(); + return false; + } + + if (! InitThread()) { + assert(0 && "InitProcess(): Failed to initialize thread"); + + glslang::ReleaseGlobalLock(); + return false; + } + + glslang::ReleaseGlobalLock(); + return true; +} + + +bool InitThread() +{ + // + // This function is re-entrant + // + if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) { + assert(0 && "InitThread(): Process hasn't been initalised."); + return false; + } + + if (OS_GetTLSValue(ThreadInitializeIndex) != 0) + return true; + + InitializeMemoryPools(); + + if (! OS_SetTLSValue(ThreadInitializeIndex, (void *)1)) { + assert(0 && "InitThread(): Unable to set init flag."); + return false; + } + + return true; +} + + +bool DetachThread() +{ + bool success = true; + + if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) + return true; + + // + // Function is re-entrant and this thread may not have been initialized. + // + if (OS_GetTLSValue(ThreadInitializeIndex) != 0) { + if (!OS_SetTLSValue(ThreadInitializeIndex, (void *)0)) { + assert(0 && "DetachThread(): Unable to clear init flag."); + success = false; + } + + FreeGlobalPools(); + + } + + return success; +} + +bool DetachProcess() +{ + bool success = true; + + if (ThreadInitializeIndex == OS_INVALID_TLS_INDEX) + return true; + + ShFinalize(); + + success = DetachThread(); + + FreePoolIndex(); + + OS_FreeTLSIndex(ThreadInitializeIndex); + ThreadInitializeIndex = OS_INVALID_TLS_INDEX; + + return success; +} + +} // end namespace glslang |