moved winix directories to winixd subdirectory
git-svn-id: svn://ttmath.org/publicrep/winix/trunk@1027 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
528
winixd/core/plugin.cpp
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528
winixd/core/plugin.cpp
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/*
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* This file is a part of Winix
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* and is distributed under the 2-Clause BSD licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2008-2014, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <dlfcn.h>
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#include <string.h>
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#include "plugin.h"
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#include "pluginmsg.h"
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#include "misc.h"
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namespace Winix
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{
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void Plugin::UnloadPlugins()
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{
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size_t i;
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slots.clear();
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for(i=0 ; i<plugins.size() ; ++i)
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dlclose(plugins[i].handle);
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plugins.clear();
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}
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Plugin::Plugin()
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{
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current_plugin = -1;
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db = 0;
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config = 0;
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cur = 0;
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system = 0;
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functions = 0;
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templates = 0;
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synchro = 0;
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session_manager = 0;
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}
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Plugin::~Plugin()
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{
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UnloadPlugins();
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}
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void Plugin::SetDb(Db * pdb)
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{
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db = pdb;
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}
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void Plugin::SetConfig(Config * pconfig)
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{
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config = pconfig;
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}
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void Plugin::SetCur(Cur * pcur)
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{
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cur = pcur;
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}
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void Plugin::SetSystem(System * psystem)
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{
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system = psystem;
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}
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void Plugin::SetFunctions(Functions * pfunctions)
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{
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functions = pfunctions;
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}
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void Plugin::SetTemplates(Templates * ptemplates)
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{
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templates = ptemplates;
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}
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void Plugin::SetSynchro(Synchro * psynchro)
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{
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synchro = psynchro;
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}
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void Plugin::SetSessionManager(SessionManager * psession_manager)
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{
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session_manager = psession_manager;
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}
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void Plugin::Lock()
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{
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if( synchro )
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synchro->Lock();
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}
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void Plugin::Unlock()
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{
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if( synchro )
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synchro->Unlock();
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}
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bool Plugin::SetPointers(PluginInfo & info)
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{
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// for safety we call a plugin function only when all our pointers are not null
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bool res = (db && config && cur && system && functions && templates && synchro && session_manager);
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if( !res )
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{
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Lock();
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log << log1 << "Plugin: cannot call a function - some of the winix pointers are null" << logend;
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Unlock();
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}
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info.db = db;
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info.config = config;
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info.cur = cur;
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info.system = system;
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info.functions = functions;
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info.templates = templates;
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info.synchro = synchro;
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info.session_manager = session_manager;
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return res;
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}
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void Plugin::LoadPlugins(const std::wstring & plugins_dir, const std::vector<std::wstring> & plugins)
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{
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for(size_t i=0 ; i<plugins.size() ; ++i)
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{
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if( !plugins[i].empty() && plugins[i][0] == '/' )
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{
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LoadPlugin(plugins[i]);
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}
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else
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{
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temp_path = plugins_dir;
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temp_path += '/';
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temp_path += plugins[i];
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LoadPlugin(temp_path);
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}
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}
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}
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// we don't have to use Lock() here because plugins are read
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// before threads are started
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void * Plugin::LoadInitFun(const wchar_t * filename, Fun1 & fun_init)
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{
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char file[WINIX_OS_PATH_SIZE];
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if( !WideToUTF8(filename, file, WINIX_OS_PATH_SIZE) )
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return 0;
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void * p = dlopen(file, RTLD_NOW | RTLD_LOCAL);
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if( !p )
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{
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log << log1 << "Plugin: cannot load a plugin: \"" << filename << "\"" << logend;
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log << log1 << "Plugin: dlerror: " << dlerror() << logend;
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return 0;
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}
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fun_init = (Fun1)dlsym(p, "Init");
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if( !fun_init )
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{
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log << log1 << "Plugin: cannot load a plugin: " << filename
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<< " (there is no Init() function)" << logend;
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dlclose(p);
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return 0;
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}
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log << log2 << "Plugin: plugin loaded"
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<< ", file: " << filename
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<< ", index: " << plugins.size() << logend;
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return p;
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}
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void Plugin::LoadPlugin(const wchar_t * filename)
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{
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Fun1 fun_init;
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void * plugin_handle;
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int old_current_plugin;
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PluginInfo info;
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if( !SetPointers(info) )
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return;
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if( !(plugin_handle = LoadInitFun(filename, fun_init)) )
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return;
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info.Clear();
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old_current_plugin = current_plugin;
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current_plugin = (int)plugins.size();
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info.plugin_id = current_plugin;
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fun_init(info);
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PluginsItem item;
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item.handle = plugin_handle;
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item.plugin_name = reinterpret_cast<const wchar_t *>(info.p1);
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plugins.push_back(item);
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current_plugin = old_current_plugin;
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}
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void Plugin::LoadPlugin(const std::wstring & filename)
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{
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LoadPlugin(filename.c_str());
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}
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bool Plugin::HasPlugin(const wchar_t * name)
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{
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if( *name == 0 )
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return false;
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for(size_t i=0 ; i<plugins.size() ; ++i)
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{
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if( plugins[i].plugin_name && Equal(plugins[i].plugin_name, name) )
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return true;
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}
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return false;
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}
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bool Plugin::HasPlugin(const std::wstring & name)
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{
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return HasPlugin(name.c_str());
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}
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bool Plugin::HasMessage(int message)
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{
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return (slots.find(message) != slots.end());
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}
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void Plugin::Call(Session * ses, int message, Slots::iterator & slot, PluginInfo & info)
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{
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if( !SetPointers(info) )
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return;
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current_plugin = slot->second.index;
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info.plugin_id = current_plugin;
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info.session = ses;
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if( current_plugin != -1 && ses )
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info.plugin_data_base = ses->plugin_data.Get(current_plugin);
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else
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info.plugin_data_base = 0;
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if( !slot->second.is_running )
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{
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if( config->log_plugin_call )
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{
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Lock();
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log << log1 << "Plugin: calling plugin id: " << slot->second.index << ", message: " << message << logend;
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Unlock();
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}
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slot->second.is_running = true;
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if( slot->second.fun1 )
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slot->second.fun1(info);
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if( slot->second.fun2 )
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slot->second.fun2();
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slot->second.is_running = false;
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if( config->log_plugin_call )
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{
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Lock();
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log << log1 << "Plugin: returning from plugin id: " << slot->second.index << ", message: " << message
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<< ", result: " << (info.res? "true" : "false") << logend;
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Unlock();
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}
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}
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else
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{
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Lock();
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log << log1 << "Plugin: id: " << slot->second.index
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<< ", message: " << message
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<< ", recurrences are not allowed" << logend;
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Unlock();
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}
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}
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PluginRes Plugin::Call(Session * ses, int message, void * p1_, void * p2_, long l1_, long l2_)
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{
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PluginRes res;
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int old_current_plugin = current_plugin;
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PluginInfo info;
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Slots::iterator i = slots.lower_bound(message);
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for( ; i!=slots.end() && i->first==message ; ++i )
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{
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info.Clear();
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info.p1 = p1_;
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info.p2 = p2_;
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info.l1 = l1_;
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info.l2 = l2_;
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Call(ses, message, i, info);
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if( info.res )
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++res.res_true;
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else
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++res.res_false;
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}
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current_plugin = old_current_plugin;
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return res;
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}
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PluginRes Plugin::Call(int message)
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{
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return Call(cur->session, message, 0, 0, 0, 0);
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}
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PluginRes Plugin::Call(int message, void * p1_)
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{
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return Call(cur->session, message, p1_, 0, 0, 0);
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}
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PluginRes Plugin::Call(int message, void * p1_, void * p2_)
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{
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return Call(cur->session, message, p1_, p2_, 0, 0);
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}
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PluginRes Plugin::Call(int message, long l1_)
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{
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return Call(cur->session, message, 0, 0, l1_, 0);
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}
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PluginRes Plugin::Call(int message, long l1_, long l2_)
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{
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return Call(cur->session, message, 0, 0, l1_, l2_);
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}
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PluginRes Plugin::Call(int message, void * p1_, long l1_)
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{
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return Call(cur->session, message, p1_, 0, l1_, 0);
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}
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PluginRes Plugin::Call(int message, void * p1_, long l1_, long l2_)
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{
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return Call(cur->session, message, p1_, 0, l1_, l2_);
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}
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PluginRes Plugin::Call(int message, void * p1_, void * p2_, long l1_)
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{
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return Call(cur->session, message, p1_, p2_, l1_, 0);
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}
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PluginRes Plugin::Call(Session * ses, int message)
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{
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return Call(ses, message, 0, 0, 0, 0);
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}
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PluginRes Plugin::Call(Session * ses, int message, void * p1_)
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{
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return Call(ses, message, p1_, 0, 0, 0);
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}
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PluginRes Plugin::Call(Session * ses, int message, void * p1_, void * p2_)
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{
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return Call(ses, message, p1_, p2_, 0, 0);
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}
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PluginRes Plugin::Call(Session * ses, int message, long l1_)
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{
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return Call(ses, message, 0, 0, l1_, 0);
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}
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PluginRes Plugin::Call(Session * ses, int message, long l1_, long l2_)
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{
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return Call(ses, message, 0, 0, l1_, l2_);
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}
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PluginRes Plugin::Call(Session * ses, int message, void * p1_, long l1_)
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{
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return Call(ses, message, p1_, 0, l1_, 0);
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}
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PluginRes Plugin::Call(Session * ses, int message, void * p1_, long l1_, long l2_)
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{
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return Call(ses, message, p1_, 0, l1_, l2_);
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}
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PluginRes Plugin::Call(Session * ses, int message, void * p1_, void * p2_, long l1_)
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{
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return Call(ses, message, p1_, p2_, l1_, 0);
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}
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size_t Plugin::Size()
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{
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return plugins.size();
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}
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/*
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!! IMPROVE ME
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Assign() can work only if other threads are not started
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we can add some barrier/flag so when other threads starts
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then we cannot use Assign() method
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*/
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void Plugin::Assign(int message, Fun1 fun1)
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{
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Slot s;
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if( current_plugin == -1 )
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return;
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s.fun1 = fun1;
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s.index = current_plugin;
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slots.insert( std::make_pair(message, s) );
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log << log3 << "Plugin: added function for message: " << message << ", plugin index: " << s.index << logend;
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}
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void Plugin::Assign(int message, Fun2 fun2)
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{
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Slot s;
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if( current_plugin == -1 )
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return;
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s.fun2 = fun2;
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s.index = current_plugin;
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slots.insert( std::make_pair(message, s) );
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log << log3 << "Plugin: added function for message: " << message << ", plugin index: " << s.index << logend;
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}
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const Plugin::Plugins * Plugin::GetPlugins()
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{
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return &plugins;
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}
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} // namespace Winix
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