dynamiclibrary.cpp

网络游戏通用架构, 这是基于boost和libevent写的一个程序

#include "dynamiclibrary.h"

/*
The most codes here is from the ICE(www.zeroc.com). Thanks a lot. ;-)
*/

DynamicLibrary::DynamicLibrary()
{
    _hnd= NULL;
}


DynamicLibrary::~DynamicLibrary()
{
    unload();
}


bool DynamicLibrary::load( const string& __filename )
{
#ifdef _WIN32
    _hnd = LoadLibrary( __filename.c_str() );
#else
    int flags = RTLD_NOW | RTLD_GLOBAL;
#ifdef _AIX
    flags |= RTLD_MEMBER;
#endif
    _hnd= dlopen( __filename.c_str(), flags );
    if( _hnd == 0 ){
        // Remember the most recent error in _err.
        const char* err= dlerror();
        if( err ){
            _err= err;
        }
    }
#endif
    return _hnd != NULL;
}


void* DynamicLibrary::getSymbol( const string& __name )
{
    if( _hnd ){
    #ifdef _WIN32
        return GetProcAddress( _hnd, __name.c_str() );
    #else
        void* result= dlsym( _hnd, __name.c_str() );
        if( result == NULL ){
            // Remember the most recent error in _err.
            const char* err= dlerror();
            if( err ){
                _err= err;
            }
        }
        return result;
    #endif
    }
    return NULL;
}


void DynamicLibrary::unload(void)
{
#ifdef _WIN32
    FreeLibrary( _hnd );
#else
    dlclose( _hnd );
#endif
    _hnd= NULL;
}