poll-compat.h File Reference

#include "asterisk/select.h"
#include <sys/poll.h>

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Defines
#define	ast_poll(a, b, c)   poll(a, b, c)
Functions
int	ast_poll2 (struct pollfd *pArray, unsigned long n_fds, struct timeval *tv)
	Same as poll(2), except the time is specified in microseconds and the tv argument is modified to indicate the time remaining.
static int	ast_poll_fd_index (struct pollfd *haystack, int nfds, int needle)
	Shortcut for conversion of FD_ISSET to poll(2)-based.

---

Define Documentation

#define ast_poll	(		a,
			b,
			c
	)		poll(a, b, c)

Definition at line 88 of file poll-compat.h.

Referenced by _sip_tcp_helper_thread(), aji_io_recv(), ast_el_read_char(), ast_io_wait(), ast_remotecontrol(), ast_stun_request(), ast_wait_for_input(), ast_wait_for_output(), ast_waitfor_nandfds(), cb_events(), dispatch_thread_handler(), do_monitor(), do_parking_thread(), do_pktccops(), get_input(), hidthread(), launch_netscript(), listener(), misdn_read(), monitor_sig_flags(), monmp3thread(), netconsole(), read_pipe(), shaun_of_the_dead(), timed_read(), and timing_test().

---

Function Documentation

int ast_poll2	(	struct pollfd *	pArray,
		unsigned long	n_fds,
		struct timeval *	tv
	)

Same as poll(2), except the time is specified in microseconds and the tv argument is modified to indicate the time remaining.

Definition at line 268 of file poll.c.

References ast_select(), ast_tv(), ast_tvadd(), ast_tvdiff_ms(), ast_tvnow(), ast_tvsub(), and FD_ZERO.

Referenced by do_monitor().

{
#if !defined(AST_POLL_COMPAT)
   struct timeval start = ast_tvnow();
#if defined(HAVE_PPOLL)
   struct timespec ts = { tv ? tv->tv_sec : 0, tv ? tv->tv_usec * 1000 : 0 };
   int res = ppoll(pArray, n_fds, tv ? &ts : NULL, NULL);
#else
   int res = poll(pArray, n_fds, tv ? tv->tv_sec * 1000 + tv->tv_usec / 1000 : -1);
#endif
   struct timeval after = ast_tvnow();
   if (res > 0 && tv && ast_tvdiff_ms(ast_tvadd(*tv, start), after) > 0) {
      *tv = ast_tvsub(*tv, ast_tvsub(after, start));
   } else if (res > 0 && tv) {
      *tv = ast_tv(0, 0);
   }
   return res;
#else
   ast_fdset read_descs, write_descs, except_descs;
   int ready_descriptors, max_fd = 0;

   FD_ZERO(&read_descs);
   FD_ZERO(&write_descs);
   FD_ZERO(&except_descs);

   if (pArray) {
      max_fd = map_poll_spec(pArray, n_fds, &read_descs, &write_descs, &except_descs);
   }

   ready_descriptors = ast_select(max_fd + 1, &read_descs, &write_descs, &except_descs, tv);

   if (ready_descriptors >= 0) {
      map_select_results(pArray, n_fds, &read_descs, &write_descs, &except_descs);
   }

   return ready_descriptors;
#endif
}

static int ast_poll_fd_index	(	struct pollfd *	haystack,
		int	nfds,
		int	needle
	)		[inline, static]

Shortcut for conversion of FD_ISSET to poll(2)-based.

Definition at line 128 of file poll-compat.h.

Referenced by do_pktccops().

{
   int i;
   for (i = 0; i < nfds; i++) {
      if (haystack[i].fd == needle) {
         return i;
      }
   }
   return -1;
}