#ifndef _RCLMON_H_INCLUDED_
#define _RCLMON_H_INCLUDED_
#include "autoconfig.h"
#ifdef RCL_MONITOR
/* @(#$Id: rclmon.h,v 1.5 2006-10-24 14:28:38 dockes Exp $ (C) 2006 J.F.Dockes */
/**
* Definitions for the real-time monitoring recoll.
* We're interested in file modifications, deletions and renaming.
* We use two threads, one to receive events from the source, the
* other to perform adequate processing.
*
* The two threads communicate through an event buffer which is
* actually a hash map indexed by file path for easy coalescing of
* multiple events to the same file.
*/
#include <string>
#include <map>
#include "rclconfig.h"
#ifndef NO_NAMESPACES
using std::string;
using std::multimap;
#endif
/**
* Monitoring event: something changed in the filesystem
*/
class RclMonEvent {
public:
enum EvType {RCLEVT_NONE, RCLEVT_MODIFY, RCLEVT_DELETE,
RCLEVT_DIRCREATE, RCLEVT_RENAME};
string m_path;
string m_opath;
EvType m_etyp;
RclMonEvent() : m_etyp(RCLEVT_NONE) {}
};
/**
* Monitoring event queue. This is the shared object between the main thread
* (which does the actual indexing work), and the monitoring thread which
* receives events from FAM / inotify / etc.
*/
class RclEQData;
class RclMonEventQueue {
public:
RclMonEventQueue();
~RclMonEventQueue();
/** Unlock queue and wait until there are new events.
* Returns with the queue locked */
bool wait(int secs = -1, bool *timedout = 0);
/** Unlock queue */
bool unlock();
/** Lock queue. */
bool lock();
/** Lock queue and add event. */
bool pushEvent(const RclMonEvent &ev);
void setTerminate(); /* To all threads: end processing */
bool ok();
bool empty();
RclMonEvent pop();
// Convenience function for initially communicating config to mon thr
void setConfig(RclConfig *conf);
RclConfig *getConfig();
private:
RclEQData *m_data;
};
/** Start monitoring on the topdirs described in conf */
extern bool startMonitor(RclConfig *conf, bool nofork);
/** Main routine for the event receiving thread */
extern void *rclMonRcvRun(void *);
/** There can only be one of us. Name of the lock file inside the config
* directory. We write our pid in there */
#define RCL_MONITOR_PIDFILENAME "rclmonpid"
#endif // RCL_MONITOR
#endif /* _RCLMON_H_INCLUDED_ */