coreboot-kgpe-d16/src/commonlib/mem_pool.c
Angel Pons ebda03ea56 src/commonlib: Use SPDX for GPL-2.0-only files
Done with sed and God Lines. Only done for C-like code for now.

Change-Id: I29e746115e3b0630238176a0f913a3b5340962eb
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40047
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-04-04 01:14:24 +00:00

35 lines
771 B
C

/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <commonlib/helpers.h>
#include <commonlib/mem_pool.h>
void *mem_pool_alloc(struct mem_pool *mp, size_t sz)
{
void *p;
/* Make all allocations be at least 8 byte aligned. */
sz = ALIGN_UP(sz, 8);
/* Determine if any space available. */
if ((mp->size - mp->free_offset) < sz)
return NULL;
p = &mp->buf[mp->free_offset];
mp->free_offset += sz;
mp->last_alloc = p;
return p;
}
void mem_pool_free(struct mem_pool *mp, void *p)
{
/* Determine if p was the most recent allocation. */
if (p == NULL || mp->last_alloc != p)
return;
mp->free_offset = mp->last_alloc - mp->buf;
/* No way to track allocation before this one. */
mp->last_alloc = NULL;
}