DFGCompilationKey.h [plain text]
#ifndef DFGCompilationKey_h
#define DFGCompilationKey_h
#include "DFGCompilationMode.h"
#include <wtf/HashMap.h>
namespace JSC {
class CodeBlock;
class CodeBlockSet;
namespace DFG {
class CompilationKey {
public:
CompilationKey()
: m_profiledBlock(0)
, m_mode(InvalidCompilationMode)
{
}
CompilationKey(WTF::HashTableDeletedValueType)
: m_profiledBlock(0)
, 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 const bool safeToCompareToEmptyOrDeleted = true;
};
} }
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> { };
}
#endif // DFGCompilationKey_h