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//
// SharedLibrary_VX.cpp
//
// Library: Foundation
// Package: SharedLibrary
// Module: SharedLibrary
//
// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/SharedLibrary_VX.h"
#include "Poco/Exception.h"
#include "Poco/Format.h"
#error #include <loadLib.h>
#error #include <unldLib.h>
#include <ioLib.h>
#error #include <symLib.h>
#error #include <sysSymTbl.h>
#include <cstring>
struct SymLookup
{
const char* name;
int group;
void* addr;
};
extern "C" bool lookupFunc(char* name, int val, SYM_TYPE type, int arg, UINT16 group)
{
SymLookup* symLookup = reinterpret_cast<SymLookup*>(arg);
if (group == symLookup->group && std::strcmp(name, symLookup->name) == 0)
{
symLookup->addr = reinterpret_cast<void*>(val);
return TRUE;
}
else return FALSE;
}
namespace Poco {
FastMutex SharedLibraryImpl::_mutex;
SharedLibraryImpl::SharedLibraryImpl():
_moduleId(0)
{
}
SharedLibraryImpl::~SharedLibraryImpl()
{
}
void SharedLibraryImpl::loadImpl(const std::string& path, int /*flags*/)
{
FastMutex::ScopedLock lock(_mutex);
if (_moduleId) throw LibraryAlreadyLoadedException(path);
int fd = open(const_cast<char*>(path.c_str()), O_RDONLY, 0);
if (fd)
{
_moduleId = loadModule(fd, LOAD_GLOBAL_SYMBOLS);
if (!_moduleId)
{
int err = errno;
close(fd);
throw LibraryLoadException(Poco::format("error %d", err));
}
}
else
{
int err = errno;
throw LibraryLoadException(Poco::format("cannot open library (error %d)", err));
}
_path = path;
}
void SharedLibraryImpl::unloadImpl()
{
FastMutex::ScopedLock lock(_mutex);
if (_moduleId)
{
unldByModuleId(_moduleId, 0);
_moduleId = 0;
}
}
bool SharedLibraryImpl::isLoadedImpl() const
{
return _moduleId != 0;
}
void* SharedLibraryImpl::findSymbolImpl(const std::string& name)
{
poco_assert (_moduleId != 0);
FastMutex::ScopedLock lock(_mutex);
MODULE_INFO mi;
if (!moduleInfoGet(_moduleId, &mi)) return 0;
SymLookup symLookup;
symLookup.name = name.c_str();
symLookup.group = mi.group;
symLookup.addr = 0;
symEach(sysSymTbl, reinterpret_cast<FUNCPTR>(lookupFunc), reinterpret_cast<int>(&symLookup));
return symLookup.addr;
}
const std::string& SharedLibraryImpl::getPathImpl() const
{
return _path;
}
std::string SharedLibraryImpl::suffixImpl()
{
return ".out";
}
bool SharedLibraryImpl::setSearchPathImpl(const std::string&)
{
return false;
}
} // namespace Poco
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