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/*
* 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. 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.
*/
#pragma once
#if PLATFORM(MAC) || PLATFORM(IOS_FAMILY)
// Probabilistic Guard Malloc is not really enabled on older platforms but opt those to system malloc too for consistency.
#define HAVE_PROBABILISTIC_GUARD_MALLOC 1
#endif
namespace WTF {
struct SystemMalloc {
static void* malloc(size_t size)
{
auto* result = ::malloc(size);
if (!result)
CRASH();
return result;
}
static void* tryMalloc(size_t size)
{
return ::malloc(size);
}
static void* zeroedMalloc(size_t size)
{
auto* result = ::malloc(size);
if (!result)
CRASH();
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
memset(result, 0, size);
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
return result;
}
static void* tryZeroedMalloc(size_t size)
{
auto* result = ::malloc(size);
if (!result)
return nullptr;
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
memset(result, 0, size);
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
return result;
}
static void* realloc(void* p, size_t size)
{
auto* result = ::realloc(p, size);
if (!result)
CRASH();
return result;
}
static void* tryRealloc(void* p, size_t size)
{
return ::realloc(p, size);
}
static void free(void* p)
{
::free(p);
}
static constexpr ALWAYS_INLINE size_t nextCapacity(size_t capacity)
{
return capacity + capacity / 4 + 1;
}
};
#if HAVE(PROBABILISTIC_GUARD_MALLOC)
using ProbabilisticGuardMalloc = SystemMalloc;
#endif
}
using WTF::SystemMalloc;
#if HAVE(PROBABILISTIC_GUARD_MALLOC)
using WTF::ProbabilisticGuardMalloc;
#endif
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