/* SPDX-License-Identifier: GPL-3.0-or-later

 * Copyright © 2016-2018 The TokTok team.

 * Copyright © 2013 Tox project.

 */

#include "mem.h"

#include <stdlib.h>

#include "ccompat.h"

nullable(1)

static void *sys_malloc(void *obj, uint32_t size)

{

    return malloc(size);

}

nullable(1)

static void *sys_calloc(void *obj, uint32_t nmemb, uint32_t size)

{

    return calloc(nmemb, size);

}

nullable(1, 2)

static void *sys_realloc(void *obj, void *ptr, uint32_t size)

{

    return realloc(ptr, size);

}

nullable(1, 2)

static void sys_free(void *obj, void *ptr)

{

    free(ptr);

}

static const Memory_Funcs os_memory_funcs = {

    sys_malloc,

    sys_calloc,

    sys_realloc,

    sys_free,

};

static const Memory os_memory_obj = {&os_memory_funcs};

const Memory *os_memory(void)

{

    return &os_memory_obj;

}

void *mem_balloc(const Memory *mem, uint32_t size)

{

    void *const ptr = mem->funcs->malloc(mem->obj, size);

    return ptr;

}

void *mem_alloc(const Memory *mem, uint32_t size)

{

    void *const ptr = mem->funcs->calloc(mem->obj, 1, size);

    return ptr;

}

void *mem_valloc(const Memory *mem, uint32_t nmemb, uint32_t size)

{

    const uint32_t bytes = nmemb * size;

    if (size != 0 && bytes / size != nmemb) {

        return nullptr;

    }

    void *const ptr = mem->funcs->calloc(mem->obj, nmemb, size);

    return ptr;

}

void *mem_vrealloc(const Memory *mem, void *ptr, uint32_t nmemb, uint32_t size)

{

    const uint32_t bytes = nmemb * size;

    if (size != 0 && bytes / size != nmemb) {

        return nullptr;

    }

    void *const new_ptr = mem->funcs->realloc(mem->obj, ptr, bytes);

    return new_ptr;

}

void mem_delete(const Memory *mem, void *ptr)

{

    mem->funcs->free(mem->obj, ptr);

}