From afc30d1a33506d8c0fb08f6b2df7856071383430 Mon Sep 17 00:00:00 2001 From: Andre Susano Pinto Date: Tue, 15 Jul 2008 12:54:57 +0000 Subject: There was a problem with the last merge :S Somehow it didnt finished and didnt added some files under the svn control (found thanks to lguillaume that reported some files were missing) Last merge fixed and also merged modifications up to revision 15584. I checked the diff svn diff --new . --old https://svn.blender.org/svnroot/bf-blender/trunk/blender And everything seems to be right now --- source/blender/blenlib/BLI_mempool.h | 44 +++++++++ source/blender/blenlib/intern/BLI_mempool.c | 140 ++++++++++++++++++++++++++++ 2 files changed, 184 insertions(+) create mode 100644 source/blender/blenlib/BLI_mempool.h create mode 100644 source/blender/blenlib/intern/BLI_mempool.c (limited to 'source/blender/blenlib') diff --git a/source/blender/blenlib/BLI_mempool.h b/source/blender/blenlib/BLI_mempool.h new file mode 100644 index 00000000000..8b31459dd38 --- /dev/null +++ b/source/blender/blenlib/BLI_mempool.h @@ -0,0 +1,44 @@ +/** + * Simple fast memory allocator + * + * + * ***** 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 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Geoffrey Bantle. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef BLI_MEMPOOL_H +#define BLI_MEMPOOL_H + +struct BLI_mempool; +typedef struct BLI_mempool BLI_mempool; + +BLI_mempool *BLI_mempool_create(int esize, int tote, int pchunk); +void *BLI_mempool_alloc(BLI_mempool *pool); +void *BLI_mempool_calloc(BLI_mempool *pool); +void BLI_mempool_free(BLI_mempool *pool, void *addr); +void BLI_mempool_destroy(BLI_mempool *pool); + + +#endif 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 + +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); +} -- cgit v1.2.3