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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QV4IDENTIFIERHASHDATA_H
#define QV4IDENTIFIERHASHDATA_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qv4global_p.h>
#include <private/qv4propertykey_p.h>
#include <private/qv4identifiertable_p.h>
#include <QtCore/qatomic.h>
QT_BEGIN_NAMESPACE
namespace QV4 {
struct IdentifierHashEntry {
PropertyKey identifier;
int value;
};
struct IdentifierHashData
{
IdentifierHashData(IdentifierTable *table, int numBits)
: size(0)
, numBits(numBits)
, identifierTable(table)
{
refCount.storeRelaxed(1);
alloc = qPrimeForNumBits(numBits);
entries = (IdentifierHashEntry *)malloc(alloc*sizeof(IdentifierHashEntry));
memset(entries, 0, alloc*sizeof(IdentifierHashEntry));
identifierTable->addIdentifierHash(this);
}
explicit IdentifierHashData(IdentifierHashData *other)
: size(other->size)
, numBits(other->numBits)
, identifierTable(other->identifierTable)
{
refCount.storeRelaxed(1);
alloc = other->alloc;
entries = (IdentifierHashEntry *)malloc(alloc*sizeof(IdentifierHashEntry));
memcpy(entries, other->entries, alloc*sizeof(IdentifierHashEntry));
identifierTable->addIdentifierHash(this);
}
~IdentifierHashData() {
free(entries);
if (identifierTable)
identifierTable->removeIdentifierHash(this);
}
void markObjects(MarkStack *markStack) const
{
IdentifierHashEntry *e = entries;
IdentifierHashEntry *end = e + alloc;
while (e < end) {
if (Heap::Base *o = e->identifier.asStringOrSymbol())
o->mark(markStack);
++e;
}
}
QBasicAtomicInt refCount;
int alloc;
int size;
int numBits;
IdentifierTable *identifierTable;
IdentifierHashEntry *entries;
};
} // namespace QV4
QT_END_NAMESPACE
#endif // QV4IDENTIFIERHASHDATA_P_H
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