File: BumpPointerAllocator.cpp

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/*
 * Copyright (C) 2019 Sony Interactive Entertainment Inc.
 * Copyright (C) 2025 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. AND ITS CONTRIBUTORS ``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 ITS 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 "config.h"
#include <wtf/BumpPointerAllocator.h>
#include <wtf/StdLibExtras.h>

namespace TestWebKitAPI {

TEST(WTF_BumpPointerAllocator, AllocationWithOnlySmallerPoolsAvailable)
{
    WTF::BumpPointerAllocator allocator;
    WTF::BumpPointerPool* pool = allocator.startAllocator(4 * MB);

    pool = pool->ensureCapacity(0x2000);
    void* a = pool->alloc(0x2000);

    pool = pool->ensureCapacity(0x2000);
    void* b = pool->alloc(0x2000);

    pool = pool->dealloc(b);
    pool = pool->dealloc(a);

    pool = pool->ensureCapacity(0x5000);
    void* c = pool->alloc(0x5000);

    pool = pool->dealloc(c);

    allocator.stopAllocator();
}

} // namespace TestWebKitAPI