From e7a73b75a0dbd599187b8980b2e1e1cb5dfdaf6d Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Sun, 28 Aug 2016 11:05:14 +0200 Subject: gallium: switch drivers to the slab allocator in src/util --- src/gallium/auxiliary/Makefile.sources | 2 - src/gallium/auxiliary/util/u_slab.c | 171 --------------------------------- src/gallium/auxiliary/util/u_slab.h | 96 ------------------ 3 files changed, 269 deletions(-) delete mode 100644 src/gallium/auxiliary/util/u_slab.c delete mode 100644 src/gallium/auxiliary/util/u_slab.h (limited to 'src/gallium/auxiliary') diff --git a/src/gallium/auxiliary/Makefile.sources b/src/gallium/auxiliary/Makefile.sources index 093c45b48fe..f8954c90407 100644 --- a/src/gallium/auxiliary/Makefile.sources +++ b/src/gallium/auxiliary/Makefile.sources @@ -284,8 +284,6 @@ C_SOURCES := \ util/u_sampler.h \ util/u_simple_shaders.c \ util/u_simple_shaders.h \ - util/u_slab.c \ - util/u_slab.h \ util/u_split_prim.h \ util/u_sse.h \ util/u_string.h \ diff --git a/src/gallium/auxiliary/util/u_slab.c b/src/gallium/auxiliary/util/u_slab.c deleted file mode 100644 index 7e7d43bd830..00000000000 --- a/src/gallium/auxiliary/util/u_slab.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright 2010 Marek Olšák - * - * 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. */ - -#include "util/u_slab.h" - -#include "util/u_math.h" -#include "util/u_memory.h" -#include "util/simple_list.h" - -#include - -#define UTIL_SLAB_MAGIC 0xcafe4321 - -/* The block is either allocated memory or free space. */ -struct util_slab_block { - /* The header. */ - /* The first next free block. */ - struct util_slab_block *next_free; - - intptr_t magic; - - /* Memory after the last member is dedicated to the block itself. - * The allocated size is always larger than this structure. */ -}; - -static struct util_slab_block * -util_slab_get_block(struct util_slab_mempool *pool, - struct util_slab_page *page, unsigned index) -{ - return (struct util_slab_block*) - ((uint8_t*)page + sizeof(struct util_slab_page) + - (pool->block_size * index)); -} - -static void util_slab_add_new_page(struct util_slab_mempool *pool) -{ - struct util_slab_page *page; - struct util_slab_block *block; - unsigned i; - - page = MALLOC(pool->page_size); - insert_at_tail(&pool->list, page); - - /* Mark all blocks as free. */ - for (i = 0; i < pool->num_blocks-1; i++) { - block = util_slab_get_block(pool, page, i); - block->next_free = util_slab_get_block(pool, page, i+1); - block->magic = UTIL_SLAB_MAGIC; - } - - block = util_slab_get_block(pool, page, pool->num_blocks-1); - block->next_free = pool->first_free; - block->magic = UTIL_SLAB_MAGIC; - pool->first_free = util_slab_get_block(pool, page, 0); - pool->num_pages++; - -#if 0 - fprintf(stderr, "New page! Num of pages: %i\n", pool->num_pages); -#endif -} - -static void *util_slab_alloc_st(struct util_slab_mempool *pool) -{ - struct util_slab_block *block; - - if (!pool->first_free) - util_slab_add_new_page(pool); - - block = pool->first_free; - assert(block->magic == UTIL_SLAB_MAGIC); - pool->first_free = block->next_free; - - return (uint8_t*)block + sizeof(struct util_slab_block); -} - -static void util_slab_free_st(struct util_slab_mempool *pool, void *ptr) -{ - struct util_slab_block *block = - (struct util_slab_block*) - ((uint8_t*)ptr - sizeof(struct util_slab_block)); - - assert(block->magic == UTIL_SLAB_MAGIC); - block->next_free = pool->first_free; - pool->first_free = block; -} - -static void *util_slab_alloc_mt(struct util_slab_mempool *pool) -{ - void *mem; - - pipe_mutex_lock(pool->mutex); - mem = util_slab_alloc_st(pool); - pipe_mutex_unlock(pool->mutex); - return mem; -} - -static void util_slab_free_mt(struct util_slab_mempool *pool, void *ptr) -{ - pipe_mutex_lock(pool->mutex); - util_slab_free_st(pool, ptr); - pipe_mutex_unlock(pool->mutex); -} - -void util_slab_set_thread_safety(struct util_slab_mempool *pool, - enum util_slab_threading threading) -{ - pool->threading = threading; - - if (threading) { - pool->alloc = util_slab_alloc_mt; - pool->free = util_slab_free_mt; - } else { - pool->alloc = util_slab_alloc_st; - pool->free = util_slab_free_st; - } -} - -void util_slab_create(struct util_slab_mempool *pool, - unsigned item_size, - unsigned num_blocks, - enum util_slab_threading threading) -{ - item_size = align(item_size, sizeof(intptr_t)); - - pool->num_pages = 0; - pool->num_blocks = num_blocks; - pool->block_size = sizeof(struct util_slab_block) + item_size; - pool->block_size = align(pool->block_size, sizeof(intptr_t)); - pool->page_size = sizeof(struct util_slab_page) + - num_blocks * pool->block_size; - pool->first_free = NULL; - - make_empty_list(&pool->list); - - pipe_mutex_init(pool->mutex); - - util_slab_set_thread_safety(pool, threading); -} - -void util_slab_destroy(struct util_slab_mempool *pool) -{ - struct util_slab_page *page, *temp; - - if (pool->list.next) { - foreach_s(page, temp, &pool->list) { - remove_from_list(page); - FREE(page); - } - } - - pipe_mutex_destroy(pool->mutex); -} diff --git a/src/gallium/auxiliary/util/u_slab.h b/src/gallium/auxiliary/util/u_slab.h deleted file mode 100644 index 0df039bcd57..00000000000 --- a/src/gallium/auxiliary/util/u_slab.h +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright 2010 Marek Olšák - * - * 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: transfer_map - * - * @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); - -static inline void * -util_slab_alloc(struct util_slab_mempool *pool) -{ - return pool->alloc(pool); -} - -static inline void -util_slab_free(struct util_slab_mempool *pool, void *ptr) -{ - pool->free(pool, ptr); -} - -#endif -- cgit v1.2.3