Source/WTF/wtf/MallocCommon.cpp

/*
 * Copyright (C) 2024-2025 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. ``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
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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 */

#include "config.h"
#include <wtf/MallocCommon.h>

namespace WTF {

#if ASSERT_ENABLED
thread_local static unsigned forbidMallocUseScopeCount;
thread_local static unsigned disableMallocRestrictionScopeCount;

ForbidMallocUseForCurrentThreadScope::ForbidMallocUseForCurrentThreadScope()
{
    ++forbidMallocUseScopeCount;
}

ForbidMallocUseForCurrentThreadScope::~ForbidMallocUseForCurrentThreadScope()
{
    ASSERT(forbidMallocUseScopeCount);
    --forbidMallocUseScopeCount;
}

DisableMallocRestrictionsForCurrentThreadScope::DisableMallocRestrictionsForCurrentThreadScope()
{
    ++disableMallocRestrictionScopeCount;
}

DisableMallocRestrictionsForCurrentThreadScope::~DisableMallocRestrictionsForCurrentThreadScope()
{
    ASSERT(disableMallocRestrictionScopeCount);
    --disableMallocRestrictionScopeCount;
}

void assertMallocRestrictionForCurrentThreadScope()
{
    ASSERT(!forbidMallocUseScopeCount || disableMallocRestrictionScopeCount);
}
#endif // ASSERT_ENABLED

}