libsel4allocman/include/allocman/mspace/fixed_pool.h

/*
 * Copyright 2017, Data61, CSIRO (ABN 41 687 119 230)
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <autoconf.h>
#include <stdlib.h>
#include <stdint.h>
#include <sel4/types.h>
#include <allocman/mspace/mspace.h>
#include <allocman/mspace/k_r_malloc.h>

/* Performs allocation from a fixed pool of memory */

struct mspace_fixed_pool_config {
    void *pool;
    size_t size;
};

typedef struct mspace_fixed_pool {
    uintptr_t pool_ptr;
    size_t remaining;
    mspace_k_r_malloc_t k_r_malloc;
} mspace_fixed_pool_t;

void mspace_fixed_pool_create(mspace_fixed_pool_t *fixed_pool, struct mspace_fixed_pool_config config);

void *_mspace_fixed_pool_alloc(struct allocman *alloc, void *_fixed_pool, size_t bytes, int *error);
void _mspace_fixed_pool_free(struct allocman *alloc, void *_fixed_pool, void *ptr, size_t bytes);

static inline struct mspace_interface mspace_fixed_pool_make_interface(mspace_fixed_pool_t *fixed_pool) {
    return (struct mspace_interface){
        .alloc = _mspace_fixed_pool_alloc,
        .free = _mspace_fixed_pool_free,
        .properties = ALLOCMAN_DEFAULT_PROPERTIES,
        .mspace = fixed_pool
    };
}