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/*
* Mutex
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_MUTEX_H__
#define BOTAN_MUTEX_H__
#include <botan/exceptn.h>
namespace Botan {
/**
* Mutex Base Class
*/
class Mutex
{
public:
/**
* Lock the mutex
*/
virtual void lock() = 0;
/**
* Unlock the mutex
*/
virtual void unlock() = 0;
virtual ~Mutex() {}
};
/**
* Mutex Factory
*/
class Mutex_Factory
{
public:
/**
* @return newly allocated mutex
*/
virtual Mutex* make() = 0;
virtual ~Mutex_Factory() {}
};
/**
* Mutex Holding Class for RAII
*/
class Mutex_Holder
{
public:
/**
* Hold onto a mutex until we leave scope
* @param m the mutex to lock
*/
Mutex_Holder(Mutex* m) : mux(m)
{
if(!mux)
throw Invalid_Argument("Mutex_Holder: Argument was NULL");
mux->lock();
}
~Mutex_Holder() { mux->unlock(); }
private:
Mutex* mux;
};
}
#endif
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