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/*
* Copyright (C) 2014 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 "SourceID.h"
#include <wtf/GenericHashKey.h>
#include <wtf/HashMap.h>
#include <wtf/HashTraits.h>
#include <wtf/Vector.h>
namespace JSC {
class FunctionHasExecutedCache {
public:
struct FunctionRange {
struct Hash {
static unsigned hash(const FunctionRange& key) { return key.hash(); }
static bool equal(const FunctionRange& a, const FunctionRange& b) { return a == b; }
static constexpr bool safeToCompareToEmptyOrDeleted = false;
};
FunctionRange() {}
friend bool operator==(const FunctionRange&, const FunctionRange&) = default;
unsigned hash() const
{
return m_start * m_end;
}
unsigned m_start;
unsigned m_end;
};
bool hasExecutedAtOffset(SourceID, unsigned offset);
void insertUnexecutedRange(SourceID, unsigned start, unsigned end);
void removeUnexecutedRange(SourceID, unsigned start, unsigned end);
Vector<std::tuple<bool, unsigned, unsigned>> getFunctionRanges(SourceID);
private:
using RangeMap = UncheckedKeyHashMap<GenericHashKey<FunctionRange, FunctionRange::Hash>, bool>;
using SourceIDToRangeMap = UncheckedKeyHashMap<GenericHashKey<intptr_t>, RangeMap>;
SourceIDToRangeMap m_rangeMap;
};
} // namespace JSC
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