dmmlib/src/release_memory.c

/*
 *   Copyright 2012 Institute of Communication and Computer Systems (ICCS) 
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */

/**
 * @file   release_memory.c
 * @author Ioannis Koutras (joko@microlab.ntua.gr)
 * @date   September 2012
 * @brief  Implementation of the function to release memory space back to the
 * system.
 */

#include "release_memory.h"

#include <sys/mman.h>
#include "dmmlib/raw_block.h"

void release_memory(void *address) {
    raw_block_header_t *rb_header;

    rb_header = (raw_block_header_t *)((char *)address -
            sizeof(raw_block_header_t));

    munmap((void *)rb_header, rb_header->size);
}