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158 lines
3.7 KiB
C++
158 lines
3.7 KiB
C++
//
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// SharedLibrary_VX.cpp
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//
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// $Id: //poco/1.4/Foundation/src/SharedLibrary_VX.cpp#2 $
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//
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// Library: Foundation
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// Package: SharedLibrary
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// Module: SharedLibrary
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//
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// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/SharedLibrary_VX.h"
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#include "Poco/Exception.h"
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#include "Poco/Format.h"
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#include <loadLib.h>
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#include <unldLib.h>
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#include <ioLib.h>
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#include <symLib.h>
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#include <sysSymTbl.h>
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#include <cstring>
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struct SymLookup
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{
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const char* name;
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int group;
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void* addr;
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};
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extern "C" bool lookupFunc(char* name, int val, SYM_TYPE type, int arg, UINT16 group)
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{
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SymLookup* symLookup = reinterpret_cast<SymLookup*>(arg);
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if (group == symLookup->group && std::strcmp(name, symLookup->name) == 0)
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{
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symLookup->addr = reinterpret_cast<void*>(val);
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return TRUE;
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}
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else return FALSE;
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}
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namespace Poco {
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FastMutex SharedLibraryImpl::_mutex;
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SharedLibraryImpl::SharedLibraryImpl():
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_moduleId(0)
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{
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}
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SharedLibraryImpl::~SharedLibraryImpl()
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{
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}
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void SharedLibraryImpl::loadImpl(const std::string& path, int /*flags*/)
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{
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FastMutex::ScopedLock lock(_mutex);
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if (_moduleId) throw LibraryAlreadyLoadedException(path);
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int fd = open(const_cast<char*>(path.c_str()), O_RDONLY, 0);
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if (fd)
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{
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_moduleId = loadModule(fd, LOAD_GLOBAL_SYMBOLS);
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if (!_moduleId)
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{
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int err = errno;
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close(fd);
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throw LibraryLoadException(Poco::format("error %d", err));
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}
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}
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else
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{
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int err = errno;
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throw LibraryLoadException(Poco::format("cannot open library (error %d)", err));
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}
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_path = path;
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}
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void SharedLibraryImpl::unloadImpl()
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{
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FastMutex::ScopedLock lock(_mutex);
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if (_moduleId)
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{
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unldByModuleId(_moduleId, 0);
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_moduleId = 0;
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}
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}
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bool SharedLibraryImpl::isLoadedImpl() const
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{
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return _moduleId != 0;
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}
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void* SharedLibraryImpl::findSymbolImpl(const std::string& name)
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{
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poco_assert (_moduleId != 0);
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FastMutex::ScopedLock lock(_mutex);
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MODULE_INFO mi;
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if (!moduleInfoGet(_moduleId, &mi)) return 0;
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SymLookup symLookup;
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symLookup.name = name.c_str();
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symLookup.group = mi.group;
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symLookup.addr = 0;
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symEach(sysSymTbl, reinterpret_cast<FUNCPTR>(lookupFunc), reinterpret_cast<int>(&symLookup));
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return symLookup.addr;
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}
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const std::string& SharedLibraryImpl::getPathImpl() const
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{
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return _path;
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}
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std::string SharedLibraryImpl::suffixImpl()
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{
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return ".out";
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}
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} // namespace Poco
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