23 #ifndef __AST_SELECT_H
24 #define __AST_SELECT_H
27 #include <sys/select.h>
38 #if !defined(HAVE_VARIABLE_FDSET) && defined(CONFIGURE_RAN_AS_ROOT)
39 #define ast_fdset fd_set
41 #define ast_FDMAX 32768
46 #define _bitsize(a) (sizeof(a) * 8)
51 TYPEOF_FD_SET_FDS_BITS *bytes = (TYPEOF_FD_SET_FDS_BITS *) a; \
53 for (i = 0; i < ast_FDMAX / _bitsize(TYPEOF_FD_SET_FDS_BITS); i++) { \
58 #define FD_SET(fd, fds) \
60 TYPEOF_FD_SET_FDS_BITS *bytes = (TYPEOF_FD_SET_FDS_BITS *) fds; \
63 if (fd / _bitsize(*bytes) + ((fd + 1) % _bitsize(*bytes) ? 1 : 0) < sizeof(*(fds)) / SIZEOF_FD_SET_FDS_BITS) { \
64 bytes[fd / _bitsize(*bytes)] |= ((TYPEOF_FD_SET_FDS_BITS) 1) << (fd % _bitsize(*bytes)); \
66 fprintf(stderr, "FD %d exceeds the maximum size of ast_fdset!\n", fd); \
84 return select(nfds, (fd_set *) rfds, (fd_set *) wfds, (fd_set *) efds, tvp);
88 struct timeval tv, tvstart, tvend, tvlen;
92 gettimeofday(&tvstart, NULL);
93 res = select(nfds, (fd_set *) rfds, (fd_set *) wfds, (fd_set *) efds, tvp);
95 gettimeofday(&tvend, NULL);
98 if (tvp->tv_sec < 0 || (tvp->tv_sec == 0 && tvp->tv_usec < 0)) {
106 return select(nfds, (fd_set *) rfds, (fd_set *) wfds, (fd_set *) efds, NULL);
#define SIZEOF_FD_SET_FDS_BITS
static int ast_select(int nfds, ast_fdset *rfds, ast_fdset *wfds, ast_fdset *efds, struct timeval *tvp)
Waits for activity on a group of channels.
#define TYPEOF_FD_SET_FDS_BITS
void timersub(struct timeval *tvend, struct timeval *tvstart, struct timeval *tvdiff)
unsigned int ast_FD_SETSIZE
General Definitions for Asterisk top level program Included by asterisk.h to handle platform-specific...