99a2dd955f
There is no reason for the DPDK libraries to all have 'librte_' prefix on the directory names. This prefix makes the directory names longer and also makes it awkward to add features referring to individual libraries in the build - should the lib names be specified with or without the prefix. Therefore, we can just remove the library prefix and use the library's unique name as the directory name, i.e. 'eal' rather than 'librte_eal' Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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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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* Note, that tb_pool/tb_alloc() are not supposed to return NULL.
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* Instead, in the case of failure to allocate memory,
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* it would do siglongjmp(pool->fail).
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* It is responsibility of the caller to save the proper context/environment,
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* in the pool->fail before calling tb_alloc() for the given pool first time.
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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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siglongjmp(pool->fail, -ENOMEM);
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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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}
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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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