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https://gitlab.freedesktop.org/mesa/mesa.git
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b6fd679a9e
Right now there are two copies of mm: * mesa/main/mm.[ch] * gallium/auxiliary/util/u_mm.[ch] At some point they splitted, and from the commit message it was not clear why it was not possible to have only one copy at a common place. Taking into account that was several years ago, Im assuming that it was not possible then. This change would allow to have one copy of the same code, and also being able to use that code out of mesa/main or gallium, if needed. This commit moves u_mm and removes mm, as u_mm has slightly more changes. Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/**************************************************************************
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*
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* Copyright (C) 1999 Wittawat Yamwong
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Memory manager code. Primarily used by device drivers to manage texture
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* heaps, etc.
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*/
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#ifndef _U_MM_H_
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#define _U_MM_H_
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struct mem_block {
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struct mem_block *next, *prev;
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struct mem_block *next_free, *prev_free;
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struct mem_block *heap;
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int ofs,size;
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unsigned int free:1;
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unsigned int reserved:1;
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};
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/**
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* input: total size in bytes
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* return: a heap pointer if OK, NULL if error
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*/
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extern struct mem_block *u_mmInit(int ofs, int size);
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/**
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* Allocate 'size' bytes with 2^align2 bytes alignment,
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* restrict the search to free memory after 'startSearch'
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* depth and back buffers should be in different 4mb banks
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* to get better page hits if possible
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* input: size = size of block
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* align2 = 2^align2 bytes alignment
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* startSearch = linear offset from start of heap to begin search
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* return: pointer to the allocated block, 0 if error
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*/
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extern struct mem_block *u_mmAllocMem(struct mem_block *heap, int size, int align2,
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int startSearch);
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/**
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* Free block starts at offset
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* input: pointer to a block
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* return: 0 if OK, -1 if error
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*/
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extern int u_mmFreeMem(struct mem_block *b);
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/**
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* Free block starts at offset
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* input: pointer to a heap, start offset
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* return: pointer to a block
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*/
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extern struct mem_block *u_mmFindBlock(struct mem_block *heap, int start);
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/**
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* destroy MM
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*/
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extern void u_mmDestroy(struct mem_block *mmInit);
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/**
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* For debugging purposes.
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*/
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extern void u_mmDumpMemInfo(const struct mem_block *mmInit);
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#endif
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