Source/bmalloc/libpas/src/libpas/pas_enumerable_page_malloc.c

/*
 * Copyright (c) 2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#include "pas_config.h"

#if LIBPAS_ENABLED

#include "pas_enumerable_page_malloc.h"

#include "pas_page_malloc.h"

pas_enumerable_range_list pas_enumerable_page_malloc_page_list;

pas_aligned_allocation_result
pas_enumerable_page_malloc_try_allocate_without_deallocating_padding(
    size_t size, pas_alignment alignment)
{
    pas_aligned_allocation_result result;

    result = pas_page_malloc_try_allocate_without_deallocating_padding(size, alignment);

    if (result.result) {
        pas_enumerable_range_list_append(
            &pas_enumerable_page_malloc_page_list,
            pas_range_create(
                (uintptr_t)result.left_padding,
                (uintptr_t)result.right_padding + result.right_padding_size));
    }

    return result;
}

#endif /* LIBPAS_ENABLED */