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/*
* Copyright 2005-2014 Fabrice Colin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _WORKERTHREAD_HH
#define _WORKERTHREAD_HH
#include <time.h>
#include <string>
#include <set>
#include <map>
#include <pthread.h>
#include <sigc++/sigc++.h>
#include <glibmm/dispatcher.h>
#include <glibmm/thread.h>
#include <glibmm/ustring.h>
#include "Document.h"
#include "MonitorInterface.h"
#include "MonitorHandler.h"
class WorkerThread
{
public:
WorkerThread();
virtual ~WorkerThread();
typedef enum { UNKNOWN_ERROR = 10000, INDEX_ERROR, INDEXING_FAILED, UPDATE_FAILED, UNINDEXING_FAILED, \
QUERY_FAILED, HISTORY_FAILED, DOWNLOAD_FAILED, MONITORING_FAILED, OPENDIR_FAILED, \
UNKNOWN_INDEX, UNKNOWN_ENGINE, UNSUPPORTED_TYPE, UNSUPPORTED_PROTOCOL, \
ROBOTS_FORBIDDEN, NO_MONITORING } ThreadError;
static std::string errorToString(int errorNum);
static Glib::Dispatcher &getDispatcher(void);
static void immediateFlush(bool doFlush);
time_t getStartTime(void) const;
void setId(unsigned int id);
unsigned int getId(void) const;
void inBackground(void);
bool isBackground(void) const;
bool operator<(const WorkerThread &other) const;
Glib::Thread *start(void);
virtual std::string getType(void) const = 0;
virtual void stop(void);
bool isStopped(void) const;
bool isDone(void) const;
int getErrorNum(void) const;
std::string getStatus(void) const;
protected:
/// Use a Dispatcher for thread safety
static Glib::Dispatcher m_dispatcher;
static pthread_mutex_t m_dispatcherMutex;
static bool m_immediateFlush;
time_t m_startTime;
unsigned int m_id;
bool m_background;
bool m_stopped;
bool m_done;
int m_errorNum;
std::string m_errorParam;
void threadHandler(void);
virtual void doWork(void) = 0;
void emitSignal(void);
private:
WorkerThread(const WorkerThread &other);
WorkerThread &operator=(const WorkerThread &other);
};
class ThreadsManager : virtual public sigc::trackable
{
public:
ThreadsManager(const std::string &defaultIndexLocation,
unsigned int maxThreadsTime = 300);
virtual ~ThreadsManager();
static unsigned int get_next_id(void);
bool start_thread(WorkerThread *pWorkerThread, bool inBackground = false);
unsigned int get_threads_count(void);
void stop_threads(void);
virtual void connect(void);
virtual void disconnect(void);
void on_thread_signal();
bool read_lock_lists(void);
bool write_lock_lists(void);
void unlock_lists(void);
bool mustQuit(bool quit = false);
protected:
static unsigned int m_nextThreadId;
sigc::connection m_threadsEndConnection;
pthread_rwlock_t m_threadsLock;
pthread_rwlock_t m_listsLock;
std::map<unsigned int, WorkerThread *> m_threads;
bool m_mustQuit;
std::string m_defaultIndexLocation;
unsigned int m_maxIndexThreads;
unsigned int m_backgroundThreadsCount;
unsigned int m_foregroundThreadsMaxTime;
long m_numCPUs;
sigc::signal1<void, WorkerThread *> m_onThreadEndSignal;
std::set<std::string> m_beingIndexed;
bool read_lock_threads(void);
bool write_lock_threads(void);
void unlock_threads(void);
WorkerThread *get_thread(void);
private:
ThreadsManager(const ThreadsManager &other);
ThreadsManager &operator=(const ThreadsManager &other);
};
class MonitorThread : public WorkerThread
{
public:
MonitorThread(MonitorInterface *pMonitor, MonitorHandler *pHandler);
virtual ~MonitorThread();
virtual std::string getType(void) const;
virtual void stop(void);
protected:
int m_ctrlReadPipe;
int m_ctrlWritePipe;
MonitorInterface *m_pMonitor;
MonitorHandler *m_pHandler;
virtual bool isFileBlacklisted(const std::string &location);
virtual void fileModified(const std::string &location);
void processEvents(void);
virtual void doWork(void);
private:
MonitorThread(const MonitorThread &other);
MonitorThread &operator=(const MonitorThread &other);
};
#endif // _WORKERTHREAD_HH
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