401 lines
8.8 KiB
C++
401 lines
8.8 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "stdpch.h"
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#include "nel/misc/debug.h"
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#include "nel/misc/hierarchical_timer.h"
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#include "module_manager.h"
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using namespace NLMISC;
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using namespace std;
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/*
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* Static variables
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*/
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uint CModuleManager::_MaxModules = 0;
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NLMISC::CMutex *CModuleManager::_ModMutexes = NULL;
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vector<CModuleManager*> CModuleManager::_RegisteredManagers;
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// Constructor
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CModuleManager::CModuleManager(const char *name, bool independent)
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{
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_Independent = independent;
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_Thread = NULL;
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_StopThread = false;
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_ThreadStopped = false;
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_StackName = (name != NULL) ? string(name) : "<unnamed>";
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_Id = _RegisteredManagers.size();
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_Cycle = 0;
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_CompleteCycle = false;
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_RegisteredManagers.push_back(this);
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}
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// Destructor
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CModuleManager::~CModuleManager()
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{
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if (_Thread != NULL)
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{
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nlwarning("FEMMAN: [%s] Execution is not finished yet. Brutal thread killing", _StackName.c_str());
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_Thread->terminate();
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delete _Thread;
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}
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}
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//
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void CModuleManager::init(uint maxModules)
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{
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nlassert(_MaxModules == 0);
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nlassert(_ModMutexes == NULL);
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_MaxModules = maxModules;
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_ModMutexes = new CMutex[maxModules];
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}
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//
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void CModuleManager::release()
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{
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_MaxModules = 0;
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delete [] _ModMutexes;
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_ModMutexes = NULL;
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}
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//
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void CModuleManager::startAll()
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{
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// first reset cycle
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resetCycle();
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uint i;
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// and start all managers at once
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for (i=0; i<_RegisteredManagers.size(); ++i)
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if (_RegisteredManagers[i]->_Independent)
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_RegisteredManagers[i]->start();
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}
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void CModuleManager::stopAll(TTime timeout)
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{
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uint i;
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// send soft stop
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for (i=0; i<_RegisteredManagers.size(); ++i)
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_RegisteredManagers[i]->stop(false, 0);
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// wait for all managers to stop or timeout
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TTime before = CTime::getLocalTime();
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while (!allStopped() && CTime::getLocalTime()-before < timeout)
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nlSleep(10);
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// and hard stop
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for (i=0; i<_RegisteredManagers.size(); ++i)
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_RegisteredManagers[i]->stop(true, 0);
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}
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void CModuleManager::resetCycle()
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{
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uint i;
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// reset all managers cycle counter
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for (i=0; i<_RegisteredManagers.size(); ++i)
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_RegisteredManagers[i]->_Cycle = 0;
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}
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bool CModuleManager::allReady()
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{
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uint i;
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// checks if all managers are at the same cycle
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for (i=0; i<_RegisteredManagers.size()-1; ++i)
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if (_RegisteredManagers[i]->_Cycle != _RegisteredManagers[i+1]->_Cycle)
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return false;
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return true;
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}
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bool CModuleManager::allComplete()
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{
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uint i;
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// checks if all managers have set the stop flag
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for (i=0; i<_RegisteredManagers.size()-1; ++i)
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if (_RegisteredManagers[i]->_CompleteCycle != _RegisteredManagers[i+1]->_CompleteCycle)
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return false;
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return true;
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}
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bool CModuleManager::allStopped()
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{
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uint i;
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// checks if all managers have set the stop flag
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for (i=0; i<_RegisteredManagers.size(); ++i)
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if (!_RegisteredManagers[i]->_ThreadStopped)
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return false;
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return true;
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}
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void CModuleManager::resetManagers()
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{
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// clear all registered managers
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_RegisteredManagers.clear();
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}
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//
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void CModuleManager::addModule(uint id, TModuleExecCallback cb)
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{
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nlassert(id < _MaxModules);
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nlassert(cb != NULL);
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nldebug("FEMMAN: [%s] Added module %d (Cb=%p) to stack", _StackName.c_str(), id, cb);
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_ExecutionStack.push_back(CExecutionItem());
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_ExecutionStack.back().Type = Module;
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_ExecutionStack.back().Id = id;
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_ExecutionStack.back().Cb = cb;
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_ExecutedModules.push_back(id);
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}
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//
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void CModuleManager::addWait(uint id)
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{
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nlassert(id < _MaxModules);
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nldebug("FEMMAN: [%s] Added wait %d to stack", _StackName.c_str(), id);
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_ExecutionStack.push_back(CExecutionItem());
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_ExecutionStack.back().Type = Wait;
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_ExecutionStack.back().Id = id;
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_ExecutionStack.back().Cb = NULL;
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}
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//
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void CModuleManager::start()
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{
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_Thread = IThread::create(this);
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_StopThread = false;
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_ThreadStopped = false;
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_Thread->start();
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//nlinfo("FEMMAN: [%s] Start", _StackName.c_str());
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}
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//
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void CModuleManager::runOnce()
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{
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_StopThread = false;
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_ThreadStopped = false;
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//nlinfo("FEMMAN: [%s] Running one time", _StackName.c_str());
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// step cycle
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stepCycle();
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// wait for all managers to sync on the same cycle before entering mutexes
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waitAllReady();
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// lock mutexes
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enterMutexes();
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completeCycle();
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// and wait for all managers to finish entering mutexes
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waitAllComplete();
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//H_BEFORE(MMExecuteStack);
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executeStack();
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//H_AFTER(MMExecuteStack);
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_ThreadStopped = true;
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}
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//
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void CModuleManager::stop(bool blockingMode, TTime timeout)
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{
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// non independent modules (called by main thread) are always stopped at this point, no need to force stop
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if (!_Independent)
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{
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_ThreadStopped = true;
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return;
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}
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if (!blockingMode)
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{
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// if soft stop, just send stop message and leave
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nlinfo("FEMMAN: [%s] soft stop", _StackName.c_str());
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_StopThread = true;
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return;
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}
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if (!_StopThread)
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{
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// if not yet called stop, send message stop
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nlinfo("FEMMAN: [%s] hard stop", _StackName.c_str());
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_StopThread = true;
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// wait for stop or timeout
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TTime before = CTime::getLocalTime();
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while (!_ThreadStopped && CTime::getLocalTime()-before < timeout)
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nlSleep(10);
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}
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if ( _Thread )
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{
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// if timeout, terminate thread
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if (!_ThreadStopped)
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{
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nlwarning("FEMMAN: [%s] Can't stop. Brutal thread killing", _StackName.c_str());
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_Thread->terminate();
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}
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delete _Thread;
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_Thread = NULL;
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}
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}
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//
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void CModuleManager::run()
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{
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nldebug("FEMMAN: [%s] attached thread loop start", _StackName.c_str());
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while (true)
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{
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// step cycle
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stepCycle();
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// wait for all managers to sync on the same cycle before entering mutexes
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waitAllReady();
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// lock mutexes
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enterMutexes();
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completeCycle();
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// and wait for all managers to finish entering mutexes
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waitAllComplete();
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//H_BEFORE(MMExecuteStack);
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executeStack();
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//H_AFTER(MMExecuteStack);
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// if stop sent, just leave
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if (_StopThread)
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break;
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}
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nldebug("FEMMAN: [%s] attached thread loop end", _StackName.c_str());
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_ThreadStopped = true;
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}
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//
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void CModuleManager::executeStack()
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{
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// for each item,
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// if a module,
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// calls associated callback
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// leaves mutex
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// else
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// enters mutex
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// leaves mutex
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//nldebug("FEMMAN: [%s] execute stack", _StackName.c_str());
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uint i;
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for (i=0; i<_ExecutionStack.size(); ++i)
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{
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CExecutionItem &item = _ExecutionStack[i];
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if (item.Type == Module)
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{
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//nldebug("FEMMAN: [%s] execute module %d at %p", _StackName.c_str(), item.Id, item.Cb);
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//H_BEFORE(MMCall);
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item.Cb();
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//H_AFTER(MMCall);
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_ModMutexes[item.Id].leave();
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}
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else if (item.Type == Wait)
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{
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//nldebug("FEMMAN: [%s] wait for module %d to finish", _StackName.c_str(), item.Id);
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//H_BEFORE(MMWait);
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//TTime t = CTime::getLocalTime();
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_ModMutexes[item.Id].enter();
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//nlinfo( "Waited %u ms", (uint32)(CTime::getLocalTime()-t) );
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_ModMutexes[item.Id].leave();
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//H_AFTER(MMWait);
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}
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else
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{
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nlwarning("FEMMAN: Unexpected ExecutionItem type (%d) at item %d of the execution stack %s", item.Type, i, _StackName.c_str());
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uint j;
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for (j=0; j<_ExecutionStack.size(); ++j)
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nlwarning("FEMMAN: > %d [%s] Id=%d Cb=%p", j, (item.Type == Module) ? "MOD" : (item.Type == Wait) ? "WAIT" : "ERR", item.Id, item.Cb);
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nlerror("FEMMAN: Error in execution stack %s", _StackName.c_str());
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}
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}
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//nldebug("FEMMAN: [%s] stack executed", _StackName.c_str());
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}
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void CModuleManager::enterMutexes()
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{
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// enters all controlled mutexes
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//nldebug("FEMMAN: [%s] Entering all controlled mutexes", _StackName.c_str());
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uint i;
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for (i=0; i<_ExecutedModules.size(); ++i)
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{
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//nldebug("FEMMAN: [%s] Entering mutex %d", _StackName.c_str(), _ExecutedModules[i]);
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//TTime t = CTime::getLocalTime();
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_ModMutexes[_ExecutedModules[i]].enter();
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//nlinfo( "Waited %u ms", (uint32)(CTime::getLocalTime()-t) );
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}
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//nldebug("FEMMAN: [%s] All controlled mutexes successfully entered", _StackName.c_str());
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}
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