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/*
* Copyright (C) 2013-2019 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 "DFGCompilationMode.h"
#include <wtf/HashMap.h>
namespace JSC {
class CodeBlock;
class CodeBlockSet;
namespace DFG {
class CompilationKey {
public:
CompilationKey()
: m_profiledBlock(nullptr)
, m_mode(InvalidCompilationMode)
{
}
CompilationKey(WTF::HashTableDeletedValueType)
: m_profiledBlock(nullptr)
, m_mode(DFGMode)
{
}
CompilationKey(CodeBlock* profiledBlock, CompilationMode mode)
: m_profiledBlock(profiledBlock)
, m_mode(mode)
{
}
bool operator!() const
{
return !m_profiledBlock && m_mode == InvalidCompilationMode;
}
bool isHashTableDeletedValue() const
{
return !m_profiledBlock && m_mode != InvalidCompilationMode;
}
CodeBlock* profiledBlock() const { return m_profiledBlock; }
CompilationMode mode() const { return m_mode; }
bool operator==(const CompilationKey& other) const
{
return m_profiledBlock == other.m_profiledBlock
&& m_mode == other.m_mode;
}
unsigned hash() const
{
return WTF::pairIntHash(WTF::PtrHash<CodeBlock*>::hash(m_profiledBlock), m_mode);
}
void dump(PrintStream&) const;
private:
CodeBlock* m_profiledBlock;
CompilationMode m_mode;
};
struct CompilationKeyHash {
static unsigned hash(const CompilationKey& key) { return key.hash(); }
static bool equal(const CompilationKey& a, const CompilationKey& b) { return a == b; }
static constexpr bool safeToCompareToEmptyOrDeleted = true;
};
} } // namespace JSC::DFG
namespace WTF {
template<typename T> struct DefaultHash;
template<> struct DefaultHash<JSC::DFG::CompilationKey> {
typedef JSC::DFG::CompilationKeyHash Hash;
};
template<typename T> struct HashTraits;
template<> struct HashTraits<JSC::DFG::CompilationKey> : SimpleClassHashTraits<JSC::DFG::CompilationKey> { };
} // namespace WTF