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// **********************************************************************
//
// Copyright (c) 2003 - 2004
// ZeroC, Inc.
// North Palm Beach, FL, USA
//
// All Rights Reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/DynamicLibrary.h>
#ifndef _WIN32
# include <dlfcn.h>
#endif
using namespace Ice;
using namespace IceInternal;
using namespace std;
void IceInternal::incRef(DynamicLibrary* p) { p->__incRef(); }
void IceInternal::decRef(DynamicLibrary* p) { p->__decRef(); }
void IceInternal::incRef(DynamicLibraryList* p) { p->__incRef(); }
void IceInternal::decRef(DynamicLibraryList* p) { p->__decRef(); }
IceInternal::DynamicLibrary::DynamicLibrary()
: _hnd(0)
{
}
IceInternal::DynamicLibrary::~DynamicLibrary()
{
/*
* Closing the library here can cause a crash at program exit if
* the application holds references to library resources in global
* or static variables. Instead, we let the process discard the
* library.
*
if(_hnd != 0)
{
#ifdef _WIN32
FreeLibrary(_hnd);
#else
dlclose(_hnd);
#endif
}
*/
}
IceInternal::DynamicLibrary::symbol_type
IceInternal::DynamicLibrary::loadEntryPoint(const string& entryPoint, bool useIceVersion)
{
string::size_type colon = entryPoint.rfind(':');
string::size_type comma = entryPoint.find(',');
if(colon == string::npos || colon == entryPoint.size() - 1 ||
(comma != string::npos && (comma > colon || comma == colon - 1)))
{
_err = "invalid entry point format `" + entryPoint + "'";
return 0;
}
string libSpec = entryPoint.substr(0, colon);
string funcName = entryPoint.substr(colon + 1);
string libName, version, debug;
if(comma == string::npos)
{
libName = libSpec;
if(useIceVersion)
{
int majorVersion = (ICE_INT_VERSION / 10000);
int minorVersion = (ICE_INT_VERSION / 100) - majorVersion * 100;
ostringstream os;
os << majorVersion * 10 + minorVersion;
version = os.str();
}
}
else
{
libName = libSpec.substr(0, comma);
version = libSpec.substr(comma + 1);
}
string lib;
#ifdef _WIN32
lib = libName + version;
# ifdef _DEBUG
lib += 'd';
# endif
lib += ".dll";
#elif defined(__APPLE__)
lib = "lib" + libName;
if(!version.empty())
{
lib += "." + version;
}
lib += ".dylib";
#elif defined(__hpux)
lib = "lib" + libName;
if(!version.empty())
{
lib += "." + version;
}
else
{
lib += ".sl";
}
#else
lib = "lib" + libName + ".so";
if(!version.empty())
{
lib += "." + version;
}
#endif
if(!load(lib))
{
return 0;
}
return getSymbol(funcName);
}
bool
IceInternal::DynamicLibrary::load(const string& lib)
{
#ifdef _WIN32
_hnd = LoadLibrary(lib.c_str());
#else
_hnd = dlopen(lib.c_str(), RTLD_NOW);
if(_hnd == 0)
{
//
// Remember the most recent error in _err.
//
const char* err = dlerror();
if(err)
{
_err = err;
}
}
#endif
return _hnd != 0;
}
IceInternal::DynamicLibrary::symbol_type
IceInternal::DynamicLibrary::getSymbol(const string& name)
{
assert(_hnd != 0);
#ifdef _WIN32
return GetProcAddress(_hnd, name.c_str());
#else
symbol_type result = dlsym(_hnd, name.c_str());
if(result == 0)
{
//
// Remember the most recent error in _err.
//
const char* err = dlerror();
if(err)
{
_err = err;
}
}
return result;
#endif
}
const string&
IceInternal::DynamicLibrary::getErrorMessage() const
{
return _err;
}
void
IceInternal::DynamicLibraryList::add(const DynamicLibraryPtr& library)
{
_libraries.push_back(library);
}
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