*/
#include "config.h"
#include "backoffice.h"
#include <time.h>
#if defined(_WIN32)
# include <windows.h>
#else
# include <unistd.h>
# include <sys/types.h>
# include <signal.h>
#endif

/*
** The BKOFCE_LEASE_TIME is the amount of time for which a single backoffice
** processing run is valid.  Each backoffice run monopolizes the lease for

static sqlite3_uint64 backofficeProcessId(void){
#if defined(_WIN32)
  return (sqlite3_uint64)GetCurrentProcessId();
#else
  return (sqlite3_uint64)getpid();
#endif
}

/*
** Set an alarm to cause the process to exit after "x" seconds.  This
** prevents any kind of bug from keeping a backoffice process running
** indefinitely.
*/
#if !defined(_WIN32)
static void backofficeSigalrmHandler(int x){
  fossil_panic("backoffice timeout");
}
#endif
static void backofficeTimeout(int x){
#if !defined(_WIN32)
  signal(SIGALRM, backofficeSigalrmHandler);
  alarm(x);
#endif
}


/*
** COMMAND: test-process-id
**
** Usage: %fossil [--sleep N] PROCESS-ID ...
**
** Show the current process id, and also tell whether or not all other

  if( g.db==0 ){
    fossil_panic("database not open for backoffice processing");
  }
  if( db_transaction_nesting_depth()!=0 ){
    fossil_panic("transaction %s not closed prior to backoffice processing",
                 db_transaction_start_point());
  }
  backofficeTimeout(BKOFCE_LEASE_TIME*2);
  idSelf = backofficeProcessId();
  while(1){
    tmNow = time(0);
    db_begin_write();
    backofficeReadLease(&x);
    if( x.tmNext>=tmNow
     && x.idNext!=idSelf

    }
    /* This process needs to queue up and wait for the current lease
    ** to expire before continuing. */
    x.idNext = idSelf;
    x.tmNext = (tmNow>x.tmCurrent ? tmNow : x.tmCurrent) + BKOFCE_LEASE_TIME;
    backofficeWriteLease(&x);
    db_end_transaction(0);
    if( g.fAnyTrace ){
      fprintf(stderr, "/***** Backoffice On-deck %d *****/\n",  getpid());
    }
    if( x.tmCurrent >= tmNow ){
      sqlite3_sleep(1000*(x.tmCurrent - tmNow + 1));
    }else{
      if( lastWarning+warningDelay < tmNow ){
        fossil_warning(
           "backoffice process %lld still running after %d seconds",
           x.idCurrent, (int)(BKOFCE_LEASE_TIME + tmNow - x.tmCurrent));