glib.c

/* glib.c, liboop, copyright 1999 Dan Egnor

   This is free software; you can redistribute it and/or modify it under the
   terms of the GNU Lesser General Public License, version 2.1 or later.
   See the file COPYING for details. */

#ifdef HAVE_GLIB

#include "glib.h"
#include "oop-glib.h"
#include "oop.h"

#include <assert.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>

#ifdef HAVE_POLL_H
#include <poll.h>
#endif

#ifdef HAVE_STRING_H
#  include <string.h>	/* Needed on NetBSD1.1/SPARC due to bzero/FD_ZERO. */
#endif

#ifdef HAVE_STRINGS_H
#  include <strings.h>  /* Needed on AIX 4.2 due to bzero/FD_ZERO. */
#endif

static int use_count = 0;
static oop_source_sys *sys;
static oop_adapter_select *sel;

static fd_set read_set,write_set,except_set;
static int count;
static void *ret = NULL;

static void *on_select(
	oop_adapter_select *s,int num,fd_set *r,fd_set *w,fd_set *x,
	struct timeval now,void *unused) 
{
	read_set = *r;
	write_set = *w;
	except_set = *x;
	count = num;
	return &use_count;
}

static gint on_poll(GPollFD *array,guint num,gint timeout) {
	struct timeval tv;
	int i;

	FD_ZERO(&read_set);
	FD_ZERO(&write_set);
	FD_ZERO(&except_set);
	count = 0;
	for (i = 0; i < num; ++i) {
		if (array[i].events & G_IO_IN)
			FD_SET(array[i].fd,&read_set);
		if (array[i].events & G_IO_OUT)
			FD_SET(array[i].fd,&write_set);
		if (array[i].events & G_IO_PRI)
			FD_SET(array[i].fd,&except_set);
		/* {G_IO_,POLL}{ERR,HUP,INVAL} don't correspond to anything
		   in select(2), and aren't `normal' events anyway. */
		if (array[i].fd >= count)
			count = 1 + array[i].fd;
	}