105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tb_mem.h"
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/*
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* Memory management routines for temporary memory.
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* That memory is used only during build phase and is released after
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* build is finished.
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*/
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static struct tb_mem_block *
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tb_pool(struct tb_mem_pool *pool, size_t sz)
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{
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struct tb_mem_block *block;
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uint8_t *ptr;
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size_t size;
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size = sz + pool->alignment - 1;
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block = calloc(1, size + sizeof(*pool->block));
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if (block == NULL) {
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RTE_LOG(ERR, MALLOC, "%s(%zu)\n failed, currently allocated "
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"by pool: %zu bytes\n", __func__, sz, pool->alloc);
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return NULL;
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}
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block->pool = pool;
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block->next = pool->block;
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pool->block = block;
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pool->alloc += size;
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ptr = (uint8_t *)(block + 1);
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block->mem = RTE_PTR_ALIGN_CEIL(ptr, pool->alignment);
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block->size = size - (block->mem - ptr);
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return block;
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}
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void *
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tb_alloc(struct tb_mem_pool *pool, size_t size)
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{
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struct tb_mem_block *block;
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void *ptr;
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size_t new_sz;
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size = RTE_ALIGN_CEIL(size, pool->alignment);
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block = pool->block;
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if (block == NULL || block->size < size) {
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new_sz = (size > pool->min_alloc) ? size : pool->min_alloc;
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block = tb_pool(pool, new_sz);
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if (block == NULL)
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return NULL;
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}
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ptr = block->mem;
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block->size -= size;
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block->mem += size;
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return ptr;
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}
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void
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tb_free_pool(struct tb_mem_pool *pool)
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{
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struct tb_mem_block *next, *block;
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for (block = pool->block; block != NULL; block = next) {
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next = block->next;
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free(block);
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}
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pool->block = NULL;
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pool->alloc = 0;
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}
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