[svn] * src/lock.h,src/lock.c,src/noffle.c: Add lazy lock release. Only release the lock and close the databases if (a) another process signals us SIGUSR1 indicating it wants the lock, or (b) it is explicitly requested by a call to new function Lock_syncDatabases(). When waiting for the lock, SIGUSR1 the holding process every second. This is all an attempt to minimise the number of times we need to close and open the database. When (ha!) the database is replaced by something that can handle multiple simultaneous writers (with appropriate locking) this won't be necessary.

/*
  fetch.h

  Do the daily business by using client.c

  $Id: fetch.h 51 2000-05-05 23:49:38Z uh1763 $
*/

#ifndef FETCH_H
#define FETCH_H

#if HAVE_CONFIG_H
#include <config.h>
#endif

#include "common.h"
#include "database.h"
#include "fetchlist.h"

Bool
Fetch_init( const char *serv );

void
Fetch_close( void );

void
Fetch_getNewGrps( void );

void
Fetch_updateGrps( void );

void
Fetch_getReq_( void );

void
Fetch_postArts( void );

/* Get new articles in group "grp", using fetch mode "mode". */
void
Fetch_getNewArts( const char *grp, FetchMode mode );

#endif