poll.c File Reference

#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <assert.h>
#include <string.h>
#include <asterisk/poll-compat.h>

Go to the source code of this file.

Defines
#define	MAX(a, b)   ((a) > (b) ? (a) : (b))
Functions
int	poll (structpollfd *pArray, unsigned long n_fds, int timeout)

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Define Documentation

#define MAX (  a, b   )     ((a) > (b) ? (a) : (b))

Definition at line 87 of file poll.c.

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Function Documentation

int poll (  struct pollfd *  pArray, unsigned long  n_fds, int  timeout )

Definition at line 264 of file poll.c. Referenced by ast_carefulwrite(), ast_io_wait(), ast_waitfor_n_fd(), ast_waitfor_nandfds(), and main(). { fd_set read_descs; /* input file descs */ fd_set write_descs; /* output file descs */ fd_set except_descs; /* exception descs */ struct timeval stime; /* select() timeout value */ int ready_descriptors; /* function result */ int max_fd; /* maximum fd value */ struct timeval *pTimeout; /* actually passed */ FD_ZERO (&read_descs); FD_ZERO (&write_descs); FD_ZERO (&except_descs); assert (pArray != (struct pollfd *) NULL); /* Map the poll() file descriptor list in the select() data structures. */ max_fd = map_poll_spec (pArray, n_fds, &read_descs, &write_descs, &except_descs); /* Map the poll() timeout value in the select() timeout structure. */ pTimeout = map_timeout (timeout, &stime); /* Make the select() call. */ ready_descriptors = select (max_fd + 1, &read_descs, &write_descs, &except_descs, pTimeout); if (ready_descriptors >= 0) { map_select_results (pArray, n_fds, &read_descs, &write_descs, &except_descs); } return ready_descriptors; }

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