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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 /source/blender/blenlib/intern/BLI_mempool.c
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 'source/blender/blenlib/intern/BLI_mempool.c')
-rw-r--r--source/blender/blenlib/intern/BLI_mempool.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/BLI_mempool.c b/source/blender/blenlib/intern/BLI_mempool.c
new file mode 100644
index 00000000000..7ac7b8b1791
--- /dev/null
+++ b/source/blender/blenlib/intern/BLI_mempool.c
@@ -0,0 +1,140 @@
+/**
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2008 by Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/*
+ Simple, fast memory allocator for allocating many elements of the same size.
+*/
+
+#include "MEM_guardedalloc.h"
+#include "BLI_blenlib.h"
+#include "DNA_listBase.h"
+#include "BLI_linklist.h"
+#include <string.h>
+
+typedef struct BLI_freenode{
+ struct BLI_freenode *next;
+}BLI_freenode;
+
+typedef struct BLI_mempool_chunk{
+ struct BLI_mempool_chunk *next, *prev;
+ void *data;
+}BLI_mempool_chunk;
+
+typedef struct BLI_mempool{
+ struct ListBase chunks;
+ int esize, csize, pchunk; /*size of elements and chunks in bytes and number of elements per chunk*/
+ struct BLI_freenode *free; /*free element list. Interleaved into chunk datas.*/
+}BLI_mempool;
+
+BLI_mempool *BLI_mempool_create(int esize, int tote, int pchunk)
+{ BLI_mempool *pool = NULL;
+ BLI_freenode *lasttail = NULL, *curnode = NULL;
+ int i,j, maxchunks;
+ char *addr;
+
+ /*allocate the pool structure*/
+ pool = MEM_mallocN(sizeof(BLI_mempool),"memory pool");
+ pool->esize = esize;
+ pool->pchunk = pchunk;
+ pool->csize = esize * pchunk;
+ pool->chunks.first = pool->chunks.last = NULL;
+
+ maxchunks = tote / pchunk;
+
+ /*allocate the actual chunks*/
+ for(i=0; i < maxchunks; i++){
+ BLI_mempool_chunk *mpchunk = MEM_mallocN(sizeof(BLI_mempool_chunk), "BLI_Mempool Chunk");
+ mpchunk->next = mpchunk->prev = NULL;
+ mpchunk->data = MEM_mallocN(pool->csize, "BLI Mempool Chunk Data");
+ BLI_addtail(&(pool->chunks), mpchunk);
+
+ if(i==0) pool->free = mpchunk->data; /*start of the list*/
+ /*loop through the allocated data, building the pointer structures*/
+ for(addr = mpchunk->data, j=0; j < pool->pchunk; j++){
+ curnode = ((BLI_freenode*)addr);
+ addr += pool->esize;
+ curnode->next = (BLI_freenode*)addr;
+ }
+ /*final pointer in the previously allocated chunk is wrong.*/
+ if(lasttail) lasttail->next = mpchunk->data;
+ /*set the end of this chunks memoryy to the new tail for next iteration*/
+ lasttail = curnode;
+ }
+ /*terminate the list*/
+ curnode->next = NULL;
+ return pool;
+}
+void *BLI_mempool_alloc(BLI_mempool *pool){
+ void *retval=NULL;
+ BLI_freenode *curnode=NULL;
+ char *addr=NULL;
+ int j;
+
+ if(!(pool->free)){
+ /*need to allocate a new chunk*/
+ BLI_mempool_chunk *mpchunk = MEM_mallocN(sizeof(BLI_mempool_chunk), "BLI_Mempool Chunk");
+ mpchunk->next = mpchunk->prev = NULL;
+ mpchunk->data = MEM_mallocN(pool->csize, "BLI_Mempool Chunk Data");
+ BLI_addtail(&(pool->chunks), mpchunk);
+
+ pool->free = mpchunk->data; /*start of the list*/
+ for(addr = mpchunk->data, j=0; j < pool->pchunk; j++){
+ curnode = ((BLI_freenode*)addr);
+ addr += pool->esize;
+ curnode->next = (BLI_freenode*)addr;
+ }
+ curnode->next = NULL; /*terminate the list*/
+ }
+
+ retval = pool->free;
+ pool->free = pool->free->next;
+ //memset(retval, 0, pool->esize);
+ return retval;
+}
+
+void *BLI_mempool_calloc(BLI_mempool *pool){
+ void *retval=NULL;
+ retval = BLI_mempool_alloc(pool);
+ memset(retval, 0, pool->esize);
+ return retval;
+}
+
+
+
+void BLI_mempool_free(BLI_mempool *pool, void *addr){ //doesnt protect against double frees, dont be stupid!
+ BLI_freenode *newhead = addr;
+ newhead->next = pool->free;
+ pool->free = newhead;
+}
+void BLI_mempool_destroy(BLI_mempool *pool)
+{
+ BLI_mempool_chunk *mpchunk=NULL;
+ for(mpchunk = pool->chunks.first; mpchunk; mpchunk = mpchunk->next) MEM_freeN(mpchunk->data);
+ BLI_freelistN(&(pool->chunks));
+ MEM_freeN(pool);
+}