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author | Rajith Muditha Attapattu <rajith@apache.org> | 2007-11-20 13:59:54 +0000 |
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committer | Rajith Muditha Attapattu <rajith@apache.org> | 2007-11-20 13:59:54 +0000 |
commit | bcd011a10c0db4ffc6f78380c548d673e270e000 (patch) | |
tree | ae6961f122221a7ce574e10895be8abcca044f12 /Final/cpp/lib/common/sys/Module.h | |
parent | 5b7a0ca8896f20c85f176cd178735554833bcefc (diff) | |
download | qpid-python-bcd011a10c0db4ffc6f78380c548d673e270e000.tar.gz |
backing up the previous tag
git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/tags/M2@596673 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'Final/cpp/lib/common/sys/Module.h')
-rw-r--r-- | Final/cpp/lib/common/sys/Module.h | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/Final/cpp/lib/common/sys/Module.h b/Final/cpp/lib/common/sys/Module.h deleted file mode 100644 index 64ed309afb..0000000000 --- a/Final/cpp/lib/common/sys/Module.h +++ /dev/null @@ -1,163 +0,0 @@ -#ifndef _sys_Module_h -#define _sys_Module_h - -/* - * - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - * - */ -#include <boost/noncopyable.hpp> -#include <iostream> -#include <QpidError.h> - -namespace qpid { -namespace sys { -#if USE_APR -#include <apr_dso.h> - typedef apr_dso_handle_t* dso_handle_t; -#else - typedef void* dso_handle_t; -#endif - - template <class T> class Module : private boost::noncopyable - { - typedef T* create_t(); - typedef void destroy_t(T*); - - dso_handle_t handle; - destroy_t* destroy; - T* ptr; - - void load(const std::string& name); - void unload(); - void* getSymbol(const std::string& name); - - public: - Module(const std::string& name); - T* operator->(); - T* get(); - ~Module() throw(); - }; - -} -} - -using namespace qpid::sys; - -template <class T> Module<T>::Module(const std::string& module) : destroy(0), ptr(0) -{ - load(module); - //TODO: need a better strategy for symbol names to allow multiple - //modules to be loaded without clashes... - - //Note: need the double cast to avoid errors in casting from void* to function pointer with -pedantic - create_t* create = reinterpret_cast<create_t*>(reinterpret_cast<intptr_t>(getSymbol("create"))); - destroy = reinterpret_cast<destroy_t*>(reinterpret_cast<intptr_t>(getSymbol("destroy"))); - ptr = create(); -} - -template <class T> T* Module<T>::operator->() -{ - return ptr; -} - -template <class T> T* Module<T>::get() -{ - return ptr; -} - -template <class T> Module<T>::~Module() throw() -{ - try { - if (handle && ptr) { - destroy(ptr); - } - if (handle) unload(); - } catch (std::exception& e) { - std::cout << "Error while destroying module: " << e.what() << std::endl; - } - destroy = 0; - handle = 0; - ptr = 0; -} - -// APR ================================================================ -#if USE_APR - -#include <apr/APRBase.h> -#include <apr/APRPool.h> - -template <class T> void Module<T>::load(const std::string& name) -{ - apr_pool_t* pool = APRPool::get(); - CHECK_APR_SUCCESS(apr_dso_load(&handle, name.c_str(), pool)); - APRPool::free(pool); -} - -template <class T> void Module<T>::unload() -{ - CHECK_APR_SUCCESS(apr_dso_unload(handle)); -} - -template <class T> void* Module<T>::getSymbol(const std::string& name) -{ - apr_dso_handle_sym_t symbol; - CHECK_APR_SUCCESS(apr_dso_sym(&symbol, handle, name.c_str())); - return (void*) symbol; -} - -// POSIX================================================================ -#else - -#include <dlfcn.h> - -template <class T> void Module<T>::load(const std::string& name) -{ - dlerror(); - handle = dlopen(name.c_str(), RTLD_NOW); - const char* error = dlerror(); - if (error) { - THROW_QPID_ERROR(INTERNAL_ERROR, error); - } -} - -template <class T> void Module<T>::unload() -{ - dlerror(); - dlclose(handle); - const char* error = dlerror(); - if (error) { - THROW_QPID_ERROR(INTERNAL_ERROR, error); - } -} - -template <class T> void* Module<T>::getSymbol(const std::string& name) -{ - dlerror(); - void* sym = dlsym(handle, name.c_str()); - const char* error = dlerror(); - if (error) { - THROW_QPID_ERROR(INTERNAL_ERROR, error); - } - return sym; -} - -#endif //if USE_APR - -#endif //ifndef _sys_Module_h - |