/usr/include/KF5/kjs/protect.h is in libkf5kjs-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* This file is part of the KDE libraries
* Copyright (C) 2004 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef _KJS_PROTECT_H_
#define _KJS_PROTECT_H_
#include "value.h"
#include "collector.h"
#include "JSLock.h"
namespace KJS
{
inline void gcProtect(JSValue *val)
{
Collector::protect(val);
}
inline void gcUnprotect(JSValue *val)
{
Collector::unprotect(val);
}
inline void gcProtectNullTolerant(JSValue *val)
{
if (val) {
gcProtect(val);
}
}
inline void gcUnprotectNullTolerant(JSValue *val)
{
if (val) {
gcUnprotect(val);
}
}
// FIXME: Share more code with RefPtr template? The only differences are the ref/deref operation
// and the implicit conversion to raw pointer
template <class T> class ProtectedPtr
{
public:
ProtectedPtr() : m_ptr(NULL) { }
ProtectedPtr(T *ptr);
ProtectedPtr(const ProtectedPtr &);
~ProtectedPtr();
template <class U> ProtectedPtr(const ProtectedPtr<U> &);
T *get() const
{
return m_ptr;
}
operator T *() const
{
return m_ptr;
}
T *operator->() const
{
return m_ptr;
}
bool operator!() const
{
return m_ptr == NULL;
}
ProtectedPtr &operator=(const ProtectedPtr &);
ProtectedPtr &operator=(T *);
private:
T *m_ptr;
};
template <class T> ProtectedPtr<T>::ProtectedPtr(T *ptr)
: m_ptr(ptr)
{
if (ptr) {
JSLock lock;
gcProtect(ptr);
}
}
template <class T> ProtectedPtr<T>::ProtectedPtr(const ProtectedPtr &o)
: m_ptr(o.get())
{
if (T *ptr = m_ptr) {
JSLock lock;
gcProtect(ptr);
}
}
template <class T> ProtectedPtr<T>::~ProtectedPtr()
{
if (T *ptr = m_ptr) {
JSLock lock;
gcUnprotect(ptr);
}
}
template <class T> template <class U> ProtectedPtr<T>::ProtectedPtr(const ProtectedPtr<U> &o)
: m_ptr(o.get())
{
if (T *ptr = m_ptr) {
JSLock lock;
gcProtect(ptr);
}
}
template <class T> ProtectedPtr<T> &ProtectedPtr<T>::operator=(const ProtectedPtr<T> &o)
{
JSLock lock;
T *optr = o.m_ptr;
gcProtectNullTolerant(optr);
gcUnprotectNullTolerant(m_ptr);
m_ptr = optr;
return *this;
}
template <class T> inline ProtectedPtr<T> &ProtectedPtr<T>::operator=(T *optr)
{
JSLock lock;
gcProtectNullTolerant(optr);
gcUnprotectNullTolerant(m_ptr);
m_ptr = optr;
return *this;
}
template <class T> inline bool operator==(const ProtectedPtr<T> &a, const ProtectedPtr<T> &b)
{
return a.get() == b.get();
}
template <class T> inline bool operator==(const ProtectedPtr<T> &a, const T *b)
{
return a.get() == b;
}
template <class T> inline bool operator==(const T *a, const ProtectedPtr<T> &b)
{
return a == b.get();
}
template <class T> inline bool operator!=(const ProtectedPtr<T> &a, const ProtectedPtr<T> &b)
{
return a.get() != b.get();
}
template <class T> inline bool operator!=(const ProtectedPtr<T> &a, const T *b)
{
return a.get() != b;
}
template <class T> inline bool operator!=(const T *a, const ProtectedPtr<T> &b)
{
return a != b.get();
}
} // namespace
#endif
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