From 78f88d8b8799f013e4ab3abc87666b25071ed917 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Wed, 15 Jul 2009 22:25:28 +0200 Subject: r300/program_pair: Dynamically allocate instructions temporarily MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In preparation of using TGSI, where we cannot easily predict the number of instructions. Signed-off-by: Nicolai Hähnle --- src/mesa/drivers/dri/r300/compiler/memory_pool.h | 49 ++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/mesa/drivers/dri/r300/compiler/memory_pool.h (limited to 'src/mesa/drivers/dri/r300/compiler/memory_pool.h') diff --git a/src/mesa/drivers/dri/r300/compiler/memory_pool.h b/src/mesa/drivers/dri/r300/compiler/memory_pool.h new file mode 100644 index 0000000000..ce23c319ad --- /dev/null +++ b/src/mesa/drivers/dri/r300/compiler/memory_pool.h @@ -0,0 +1,49 @@ +/* + * Copyright 2009 Nicolai Hähnle + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. */ + +#ifndef MEMORY_POOL_H +#define MEMORY_POOL_H + +struct memory_block; + +/** + * Provides a pool of memory that can quickly be allocated from, at the + * cost of being unable to explicitly free one of the allocated blocks. + * Instead, the entire pool can be freed at once. + * + * The idea is to allow one to quickly allocate a flexible amount of + * memory during operations like shader compilation while avoiding + * reference counting headaches. + */ +struct memory_pool { + unsigned char * head; + unsigned char * end; + unsigned int total_allocated; + struct memory_block * blocks; +}; + + +void memory_pool_init(struct memory_pool * pool); +void memory_pool_destroy(struct memory_pool * pool); +void * memory_pool_malloc(struct memory_pool * pool, unsigned int bytes); + +#endif /* MEMORY_POOL_H */ -- cgit v1.2.3