libs/os/src/os_heap.c

/**
 * Copyright (c) 2015 Runtime Inc.
 *
 * 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.
 */


#include <assert.h>
#include "os/os_mutex.h"
#include "os/os_heap.h"

static struct os_mutex os_malloc_mutex;

static void
os_malloc_lock(void)
{
    int rc;

    if (g_os_started) {
        rc = os_mutex_pend(&os_malloc_mutex, 0xffffffff);
        assert(rc == 0);
    }
}

static void
os_malloc_unlock(void)
{
    int rc;

    if (g_os_started) {
        rc = os_mutex_release(&os_malloc_mutex);
        assert(rc == 0);
    }
}

void *
os_malloc(size_t size)
{
    void *ptr;

    os_malloc_lock();
    ptr = malloc(size);
    os_malloc_unlock();

    return ptr;
}

void
os_free(void *mem)
{
    os_malloc_lock();
    free(mem);
    os_malloc_unlock();
}

void *
os_realloc(void *ptr, size_t size)
{
    void *new_ptr;

    os_malloc_lock();
    new_ptr = realloc(ptr, size);
    os_malloc_unlock();

    return new_ptr;
}