#include "select.h"

#include "open.h"

#include "trigger.h"

#include "hasnpbg1.h"

static int fd = -1;

#ifdef HASNAMEDPIPEBUG1

static int fdw = -1;

#endif

void trigger_set()

{

 if (fd != -1)

   close(fd);

#ifdef HASNAMEDPIPEBUG1

 if (fdw != -1)

   close(fdw);

#endif

 fd = open_read("lock/trigger");

#ifdef HASNAMEDPIPEBUG1

 fdw = open_write("lock/trigger");

#endif

}

void trigger_selprep(nfds,rfds)

int *nfds;

fd_set *rfds;

{

 if (fd != -1)

  {

   FD_SET(fd,rfds);

   if (*nfds < fd + 1) *nfds = fd + 1;

  }

}

int trigger_pulled(rfds)

fd_set *rfds;

{

 if (fd != -1) if (FD_ISSET(fd,rfds)) return 1;

 return 0;

}