mirror of
https://github.com/darlinghq/darling-bmalloc.git
synced 2024-11-23 12:29:43 +00:00
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2019 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "IsoSharedConfig.h"
|
|
#include "IsoSharedPage.h"
|
|
#include "StaticPerProcess.h"
|
|
|
|
namespace bmalloc {
|
|
|
|
class AllIsoHeaps;
|
|
|
|
class VariadicBumpAllocator {
|
|
public:
|
|
VariadicBumpAllocator() = default;
|
|
|
|
VariadicBumpAllocator(char* payloadEnd, unsigned remaining)
|
|
: m_payloadEnd(payloadEnd)
|
|
, m_remaining(remaining)
|
|
{
|
|
}
|
|
|
|
template<unsigned, typename Func>
|
|
void* allocate(const Func& slowPath);
|
|
|
|
private:
|
|
char* m_payloadEnd { nullptr };
|
|
unsigned m_remaining { 0 };
|
|
};
|
|
|
|
class IsoSharedHeap : public StaticPerProcess<IsoSharedHeap> {
|
|
public:
|
|
IsoSharedHeap(const LockHolder&)
|
|
{
|
|
}
|
|
|
|
template<unsigned>
|
|
void* allocateNew(bool abortOnFailure);
|
|
|
|
private:
|
|
template<unsigned>
|
|
void* allocateSlow(const LockHolder&, bool abortOnFailure);
|
|
|
|
IsoSharedPage* m_currentPage { nullptr };
|
|
VariadicBumpAllocator m_allocator;
|
|
};
|
|
DECLARE_STATIC_PER_PROCESS_STORAGE(IsoSharedHeap);
|
|
|
|
} // namespace bmalloc
|
|
|
|
|