diff options
author | Nicolai Hähnle <nhaehnle@gmail.com> | 2009-07-15 22:25:28 +0200 |
---|---|---|
committer | Nicolai Hähnle <nhaehnle@gmail.com> | 2009-07-27 20:32:02 +0200 |
commit | 78f88d8b8799f013e4ab3abc87666b25071ed917 (patch) | |
tree | dd083a8461576cc167b66e6545fe7cd85cb50844 /src/mesa/drivers/dri/r300/compiler/memory_pool.h | |
parent | e5bed439be4fd7c3a349aedc4bff7eec4e4d363e (diff) |
r300/program_pair: Dynamically allocate instructions temporarily
In preparation of using TGSI, where we cannot easily predict the number
of instructions.
Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/memory_pool.h')
-rw-r--r-- | src/mesa/drivers/dri/r300/compiler/memory_pool.h | 49 |
1 files changed, 49 insertions, 0 deletions
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 <nhaehnle@gmail.com> + * + * 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 */ |