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/* ***** BEGIN COPYRIGHT BLOCK *****
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version
* 2.1 of the License.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* ***** END COPYRIGHT BLOCK *****/
#ifndef COOLKEY_LOCKING_H
#define COOLKEY_LOCKING_H
#include "mypkcs11.h"
#include <assert.h>
class Mutex {
public:
virtual ~Mutex() { }
virtual void lock()=0;
virtual void unlock()=0;
};
class MutexFactory {
public:
MutexFactory(const CK_C_INITIALIZE_ARGS* initArgs);
~MutexFactory();
Mutex* createMutex() const;
private:
CK_C_INITIALIZE_ARGS *initArgs;
};
class Guardable;
class Guard {
public:
Guard(Mutex& mutex_) : mutex(&mutex_) { mutex->lock(); }
Guard(Mutex* mutex_) : mutex(mutex_) { mutex->lock(); }
Guard(Guardable& g);
Guard(Guardable* g);
~Guard() { if( mutex ) mutex->unlock(); }
Guard(Guard& g) {
mutex = g.mutex;
g.mutex = 0;
}
Guard& operator=(Guard&g) {
mutex = g.mutex;
g.mutex = 0;
return *this;
}
void unlock() { if( mutex ) mutex->unlock(); mutex = 0; }
private:
Mutex* mutex;
};
class Guardable {
private:
friend class Guard;
Mutex *mutex;
public:
Guardable(const MutexFactory* mutexFactory) {
mutex = mutexFactory->createMutex();
}
~Guardable() {
delete mutex;
}
};
inline
Guard::Guard(Guardable& g) {
mutex = g.mutex;
mutex->lock();
}
inline
Guard::Guard(Guardable* g) {
mutex = g->mutex;
mutex->lock();
}
#endif
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