#include "asterisk.h"#include <unistd.h>#include <sys/types.h>#include <sys/time.h>#include <assert.h>#include <string.h>#include <errno.h>#include "asterisk/utils.h"#include "asterisk/poll-compat.h"
Include dependency graph for poll.c:
Go to the source code of this file.
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. | |
Variables | |
| unsigned int | ast_FD_SETSIZE = FD_SETSIZE |
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
}
Variable Documentation
| unsigned int ast_FD_SETSIZE = FD_SETSIZE |
