freeswitch/libs/xmlrpc-c/lib/libutil/select.c

62 lines
1.6 KiB
C

#define _XOPEN_SOURCE 600 /* Get pselect() in <sys/select.h> */
#include "xmlrpc_config.h"
#ifdef WIN32
#include <winsock.h>
#else
/* In some systems (SUS), the select() interface comes from <sys/time.h>;
in others, from <sys/select.h>, and other from both. Including both
in this order appears to work on all.
*/
#include <sys/time.h>
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#endif
#include <signal.h>
#include "xmlrpc-c/select_int.h"
/* xmlrpc_pselect() is just for use with sockets. In a POSIX system,
it technically works for any file descriptor, but in Windows, select()
is part of the socket facility.
*/
int
xmlrpc_pselect(int const n,
fd_set * const readfdsP,
fd_set * const writefdsP,
fd_set * const exceptfdsP,
const xmlrpc_timespec * const timeoutP,
sigset_t * const sigmaskP) {
int retval;
#if HAVE_PSELECT
#if !HAVE_TIMESPEC
#error "Impossible configuration -- has pselect(), but not struct timespec"
#else
retval = pselect(n, readfdsP, writefdsP, exceptfdsP, timeoutP, sigmaskP);
#endif
#else /* HAVE_PSELECT */
struct timeval timeout;
timeout.tv_sec = timeoutP->tv_sec;
timeout.tv_usec = timeoutP->tv_nsec/1000;
#ifdef WIN32
retval = select(n, readfdsP, writefdsP, exceptfdsP, &timeout);
#else
{
sigset_t origmask;
sigprocmask(SIG_SETMASK, sigmaskP, &origmask);
retval = select(n, readfdsP, writefdsP, exceptfdsP, &timeout);
sigprocmask(SIG_SETMASK, &origmask, NULL);
}
#endif
#endif
return retval;
}