MercuryCallback.h

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#ifndef MERCURYCALLBACK_H
#define MERCURYCALLBACK_H

#include <map>
#include "global.h"
#include "PStack.h"

static const MString BLANKSTR;


typedef void (*MercuryCallbackFunction)( const MString &, void *, PStack & );

struct MercuryCallback
{
    MercuryCallback( ): funct( NULL ), luser(NULL) {}
    MercuryCallback( MercuryCallbackFunction f, void * userdata ) :
        funct( f ), luser( userdata ) { }

    MercuryCallbackFunction funct;  //Function name
    void * luser;                   //user data

    inline bool operator ==( const MercuryCallback & c )
    {   return ( ( c.funct == funct ) && (c.luser == luser )); }

    inline bool operator !=( void * c )
    {   return ( ( funct != c ) || ( luser != c )); }

};

//Thread safe
class ClbkManager
{
public:
    void Register(const void* addr)
    {
        MLockPtr< std::map< MVPtr, bool> > clbkMap(m_clbkMap, m_mutex);
        (*clbkMap)[(MVPtr)addr] = true;
    };

    bool IsValid(const void* addr) const
    {
        MLockPtr< std::map< MVPtr, bool> > clbkMap(m_clbkMap, m_mutex);
        std::map< MVPtr, bool>::const_iterator i = clbkMap->find((MVPtr)addr);
        if (i != clbkMap->end())
            return true;
        return false;
    };

    void Remove(const void* addr)
    {
        MLockPtr< std::map< MVPtr, bool> > clbkMap(m_clbkMap, m_mutex);
        std::map< MVPtr, bool>::iterator i = clbkMap->find((MVPtr)addr);
        if (i != clbkMap->end())
            clbkMap->erase(i);
    }
private:
    volatile std::map< MVPtr, bool > m_clbkMap;
    MercuryMutex m_mutex;
};

//extern ClbkManager CLBKMAN;

#endif

/* 
 * Copyright (c) 2005-2006 Charles Lohr
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *  -   Redistributions of source code must retain the above
 *      copyright notice, this list of conditions and the following disclaimer.
 *  -   Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the distribution.
 *  -   Neither the name of the Mercury Engine nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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