diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_slab.h')
-rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_slab.h | 174 |
1 files changed, 87 insertions, 87 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_slab.h b/mesalib/src/gallium/auxiliary/util/u_slab.h index f49dca27d..3ed8b12d3 100644 --- a/mesalib/src/gallium/auxiliary/util/u_slab.h +++ b/mesalib/src/gallium/auxiliary/util/u_slab.h @@ -1,87 +1,87 @@ -/*
- * Copyright 2010 Marek Olšák <maraeo@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. */
-
-/**
- * @file
- * Simple slab allocator for equally sized memory allocations.
- * util_slab_alloc and util_slab_free have time complexity in O(1).
- *
- * Good for allocations which have very low lifetime and are allocated
- * and freed very often. Use a profiler first to know if it's worth using it!
- *
- * Candidates: get_transfer, user_buffer_create
- *
- * @author Marek Olšák
- */
-
-#ifndef U_SLAB_H
-#define U_SLAB_H
-
-#include "os/os_thread.h"
-
-enum util_slab_threading {
- UTIL_SLAB_SINGLETHREADED = FALSE,
- UTIL_SLAB_MULTITHREADED = TRUE
-};
-
-/* The page is an array of blocks (allocations). */
-struct util_slab_page {
- /* The header (linked-list pointers). */
- struct util_slab_page *prev, *next;
-
- /* Memory after the last member is dedicated to the page itself.
- * The allocated size is always larger than this structure. */
-};
-
-struct util_slab_mempool {
- /* Public members. */
- void *(*alloc)(struct util_slab_mempool *pool);
- void (*free)(struct util_slab_mempool *pool, void *ptr);
-
- /* Private members. */
- struct util_slab_block *first_free;
-
- struct util_slab_page list;
-
- unsigned block_size;
- unsigned page_size;
- unsigned num_blocks;
- unsigned num_pages;
- enum util_slab_threading threading;
-
- pipe_mutex mutex;
-};
-
-void util_slab_create(struct util_slab_mempool *pool,
- unsigned item_size,
- unsigned num_blocks,
- enum util_slab_threading threading);
-
-void util_slab_destroy(struct util_slab_mempool *pool);
-
-void util_slab_set_thread_safety(struct util_slab_mempool *pool,
- enum util_slab_threading threading);
-
-#define util_slab_alloc(pool) (pool)->alloc(pool)
-#define util_slab_free(pool, ptr) (pool)->free(pool, ptr)
-
-#endif
+/* + * Copyright 2010 Marek Olšák <maraeo@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. */ + +/** + * @file + * Simple slab allocator for equally sized memory allocations. + * util_slab_alloc and util_slab_free have time complexity in O(1). + * + * Good for allocations which have very low lifetime and are allocated + * and freed very often. Use a profiler first to know if it's worth using it! + * + * Candidates: get_transfer + * + * @author Marek Olšák + */ + +#ifndef U_SLAB_H +#define U_SLAB_H + +#include "os/os_thread.h" + +enum util_slab_threading { + UTIL_SLAB_SINGLETHREADED = FALSE, + UTIL_SLAB_MULTITHREADED = TRUE +}; + +/* The page is an array of blocks (allocations). */ +struct util_slab_page { + /* The header (linked-list pointers). */ + struct util_slab_page *prev, *next; + + /* Memory after the last member is dedicated to the page itself. + * The allocated size is always larger than this structure. */ +}; + +struct util_slab_mempool { + /* Public members. */ + void *(*alloc)(struct util_slab_mempool *pool); + void (*free)(struct util_slab_mempool *pool, void *ptr); + + /* Private members. */ + struct util_slab_block *first_free; + + struct util_slab_page list; + + unsigned block_size; + unsigned page_size; + unsigned num_blocks; + unsigned num_pages; + enum util_slab_threading threading; + + pipe_mutex mutex; +}; + +void util_slab_create(struct util_slab_mempool *pool, + unsigned item_size, + unsigned num_blocks, + enum util_slab_threading threading); + +void util_slab_destroy(struct util_slab_mempool *pool); + +void util_slab_set_thread_safety(struct util_slab_mempool *pool, + enum util_slab_threading threading); + +#define util_slab_alloc(pool) (pool)->alloc(pool) +#define util_slab_free(pool, ptr) (pool)->free(pool, ptr) + +#endif |