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authorBrecht Van Lommel <brechtvanlommel@pandora.be>2008-11-13 00:16:53 +0300
committerBrecht Van Lommel <brechtvanlommel@pandora.be>2008-11-13 00:16:53 +0300
commitbdfe7d89e2f1292644577972c716931b4ce3c6c3 (patch)
treed00eb50b749cb001e2b08272c91791e66740b05d /extern/bullet2/src/LinearMath/btPoolAllocator.h
parent78a1c27c4a6abe0ed31ca93ad21910f3df04da56 (diff)
parent7e4db234cee71ead34ee81a12e27da4bd548eb4b (diff)
Merge of trunk into blender 2.5:
svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r12987:17416 Issues: * GHOST/X11 had conflicting changes. Some code was added in 2.5, which was later added in trunk also, but reverted partially, specifically revision 16683. I have left out this reversion in the 2.5 branch since I think it is needed there. http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=16683 * Scons had various conflicting changes, I decided to go with trunk version for everything except priorities and some library renaming. * In creator.c, there were various fixes and fixes for fixes related to the -w -W and -p options. In 2.5 -w and -W is not coded yet, and -p is done differently. Since this is changed so much, and I don't think those fixes would be needed in 2.5, I've left them out. * Also in creator.c: there was code for a python bugfix where the screen was not initialized when running with -P. The code that initializes the screen there I had to disable, that can't work in 2.5 anymore but left it commented as a reminder. Further I had to disable some new function calls. using src/ and python/, as was done already in this branch, disabled function calls: * bpath.c: error reporting * BME_conversions.c: editmesh conversion functions. * SHD_dynamic: disabled almost completely, there is no python/. * KX_PythonInit.cpp and Ketsji/ build files: Mathutils is not there, disabled. * text.c: clipboard copy call. * object.c: OB_SUPPORT_MATERIAL. * DerivedMesh.c and subsurf_ccg, stipple_quarttone. Still to be done: * Go over files and functions that were moved to a different location but could still use changes that were done in trunk.
Diffstat (limited to 'extern/bullet2/src/LinearMath/btPoolAllocator.h')
-rw-r--r--extern/bullet2/src/LinearMath/btPoolAllocator.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/extern/bullet2/src/LinearMath/btPoolAllocator.h b/extern/bullet2/src/LinearMath/btPoolAllocator.h
new file mode 100644
index 00000000000..39d2559c747
--- /dev/null
+++ b/extern/bullet2/src/LinearMath/btPoolAllocator.h
@@ -0,0 +1,102 @@
+/*
+Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans http://continuousphysics.com/Bullet/
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#ifndef _BT_POOL_ALLOCATOR_H
+#define _BT_POOL_ALLOCATOR_H
+
+#include "btScalar.h"
+#include "btAlignedAllocator.h"
+
+///The btPoolAllocator class allows to efficiently allocate a large pool of objects, instead of dynamically allocating them separately.
+class btPoolAllocator
+{
+ int m_elemSize;
+ int m_maxElements;
+ int m_freeCount;
+ void* m_firstFree;
+ unsigned char* m_pool;
+
+public:
+
+ btPoolAllocator(int elemSize, int maxElements)
+ :m_elemSize(elemSize),
+ m_maxElements(maxElements)
+ {
+ m_pool = (unsigned char*) btAlignedAlloc( static_cast<unsigned int>(m_elemSize*m_maxElements),16);
+
+ unsigned char* p = m_pool;
+ m_firstFree = p;
+ m_freeCount = m_maxElements;
+ int count = m_maxElements;
+ while (--count) {
+ *(void**)p = (p + m_elemSize);
+ p += m_elemSize;
+ }
+ *(void**)p = 0;
+ }
+
+ ~btPoolAllocator()
+ {
+ btAlignedFree( m_pool);
+ }
+
+ int getFreeCount() const
+ {
+ return m_freeCount;
+ }
+
+ void* allocate(int size)
+ {
+ // release mode fix
+ (void)size;
+ btAssert(!size || size<=m_elemSize);
+ btAssert(m_freeCount>0);
+ void* result = m_firstFree;
+ m_firstFree = *(void**)m_firstFree;
+ --m_freeCount;
+ return result;
+ }
+
+ bool validPtr(void* ptr)
+ {
+ if (ptr) {
+ if (((unsigned char*)ptr >= m_pool && (unsigned char*)ptr < m_pool + m_maxElements * m_elemSize))
+ {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ void freeMemory(void* ptr)
+ {
+ if (ptr) {
+ btAssert((unsigned char*)ptr >= m_pool && (unsigned char*)ptr < m_pool + m_maxElements * m_elemSize);
+
+ *(void**)ptr = m_firstFree;
+ m_firstFree = ptr;
+ ++m_freeCount;
+ }
+ }
+
+ int getElementSize() const
+ {
+ return m_elemSize;
+ }
+
+
+};
+
+#endif //_BT_POOL_ALLOCATOR_H