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MacOSX port: xiopoll() uses Select(), except when too many fds

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This commit is contained in:
Gerhard Rieger 2008-09-29 21:18:58 +02:00
parent 097608e8a9
commit b0d29f8dc7
6 changed files with 75 additions and 29 deletions
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39
socat.c
View File

@ -664,7 +664,6 @@ int socat(const char *address1, const char *address2) {
*/
int childleftdata(xiofile_t *xfd) {
struct pollfd in;
int timeout = 0; /* milliseconds */
int retval;
/* have to check if a child process died before, but left read data */
@ -673,6 +672,7 @@ int childleftdata(xiofile_t *xfd) {
XIO_RDSTREAM(xfd)->howtoend == END_CLOSE_KILL ||
XIO_RDSTREAM(xfd)->howtoend == END_SHUTDOWN_KILL) &&
XIO_RDSTREAM(xfd)->para.exec.pid == 0) {
struct timeval timeout = { 0, 0 };
if (XIO_READABLE(xfd) && !(XIO_RDSTREAM(xfd)->eof >= 2 && !XIO_RDSTREAM(xfd)->ignoreeof)) {
in.fd = XIO_GETRDFD(xfd);
@ -680,7 +680,7 @@ int childleftdata(xiofile_t *xfd) {
in.revents = 0;
}
do {
retval = xiopoll(&in, 1, timeout);
retval = xiopoll(&in, 1, &timeout);
} while (retval < 0 && errno == EINTR);
if (retval < 0) {
@ -767,7 +767,7 @@ int _socat(void) {
XIO_GETRDFD(sock2), XIO_GETWRFD(sock2));
while (XIO_RDSTREAM(sock1)->eof <= 1 ||
XIO_RDSTREAM(sock2)->eof <= 1) {
int timeout;
struct timeval timeout, *to = NULL;
Debug6("data loop: sock1->eof=%d, sock2->eof=%d, closing=%d, wasaction=%d, total_to={"F_tv_sec"."F_tv_usec"}",
XIO_RDSTREAM(sock1)->eof, XIO_RDSTREAM(sock2)->eof,
@ -799,21 +799,21 @@ int _socat(void) {
if (polling) {
/* there is a ignoreeof poll timeout, use it */
timeout = 1000*socat_opts.pollintv.tv_sec +
socat_opts.pollintv.tv_usec/1000; /*!!! overflow?*/
timeout = socat_opts.pollintv;
to = &timeout;
} else if (socat_opts.total_timeout.tv_sec != 0 ||
socat_opts.total_timeout.tv_usec != 0) {
/* there might occur a total inactivity timeout */
timeout = 1000*socat_opts.total_timeout.tv_sec +
socat_opts.total_timeout.tv_usec/1000;
timeout = socat_opts.total_timeout;
to = &timeout;
} else {
timeout = -1; /* forever */
to = NULL;
}
if (closing>=1) {
/* first eof already occurred, start end timer */
timeout = 1000*socat_opts.closwait.tv_sec +
socat_opts.closwait.tv_usec/1000;
timeout = socat_opts.pollintv;
to = &timeout;
closing = 2;
}
@ -826,17 +826,18 @@ int _socat(void) {
if (closing>=1) {
/* first eof already occurred, start end timer */
timeout = 1000*socat_opts.closwait.tv_sec +
socat_opts.closwait.tv_usec/1000;
timeout = socat_opts.closwait;
to = &timeout;
closing = 2;
}
/* use the ignoreeof timeout if appropriate */
if (polling) {
int ptimeout = 1000*socat_opts.pollintv.tv_sec +
socat_opts.pollintv.tv_usec/1000;
if (closing == 0 || ptimeout < timeout) {
timeout = ptimeout;
if (closing == 0 ||
(socat_opts.pollintv.tv_sec < timeout.tv_sec) ||
((socat_opts.pollintv.tv_sec == timeout.tv_sec) &&
socat_opts.pollintv.tv_usec < timeout.tv_usec)) {
timeout = socat_opts.pollintv;
}
}
@ -880,7 +881,7 @@ int _socat(void) {
fd2in->fd = -1;
}
/* frame 0: innermost part of the transfer loop: check FD status */
retval = xiopoll(fds, 4, timeout);
retval = xiopoll(fds, 4, to);
if (retval >= 0 || errno != EINTR) {
break;
}
@ -947,14 +948,14 @@ int _socat(void) {
}
mayrd2 = true;
}
if (XIO_GETWRFD(sock1) >= 0 && (fd1out->revents)) {
if (XIO_GETWRFD(sock1) >= 0 && fd1out->fd >= 0 && fd1out->revents) {
if (fd1out->revents & POLLNVAL) {
Error1("poll(...[%d]: invalid request", fd1out->fd);
return -1;
}
maywr1 = true;
}
if (XIO_GETWRFD(sock2) >= 0 && (fd2out->revents)) {
if (XIO_GETWRFD(sock2) >= 0 && fd2out->fd >= 0 && fd2out->revents) {
if (fd2out->revents & POLLNVAL) {
Error1("poll(...[%d]: invalid request", fd2out->fd);
return -1;

50
sysutils.c
View File

@ -413,12 +413,56 @@ const char *hstrerror(int err) {
/* this function behaves like poll(). It tries to do so even when the poll()
system call is not available. */
int xiopoll(struct pollfd fds[], nfds_t nfds, int timeout) {
int xiopoll(struct pollfd fds[], nfds_t nfds, struct timeval *timeout) {
int i, n = 0;
int result = 0;
while (true) { /* should be if (), but we want to break */
fd_set readfds;
fd_set writefds;
fd_set exceptfds;
FD_ZERO(&readfds); FD_ZERO(&writefds); FD_ZERO(&exceptfds);
for (i = 0; i < nfds; ++i) {
fds[i].revents = 0;
if (fds[i].fd < 0) { continue; }
if (fds[i].fd > FD_SETSIZE) { break; /* use poll */ }
if (fds[i].events & POLLIN) {
FD_SET(fds[i].fd, &readfds); n = MAX(n, fds[i].fd); }
if (fds[i].events & POLLOUT) {
FD_SET(fds[i].fd, &writefds); n = MAX(n, fds[i].fd); }
}
if (fds[i].fd > FD_SETSIZE) { break; /* use poll */ }
result = Select(n+1, &readfds, &writefds, &exceptfds, timeout);
if (result < 0) { return result; }
for (i = 0; i < nfds; ++i) {
if (fds[i].fd < 0) { continue; }
if ((fds[i].events & POLLIN) && FD_ISSET(fds[i].fd, &readfds)) {
fds[i].revents |= POLLIN; ++result;
}
if ((fds[i].events & POLLOUT) && FD_ISSET(fds[i].fd, &writefds)) {
fds[i].revents |= POLLOUT; ++result;
}
}
return result;
}
#if HAVE_POLL
return Poll(fds, nfds, timeout);
{
int ms = 0;
if (timeout == NULL) {
ms = -1;
} else {
ms = 1000*timeout->tv_sec + timeout->tv_usec/1000;
}
/*! timeout */
return Poll(fds, nfds, ms);
#else /* HAVE_POLL */
/*!!! wrap around Select() */
} else {
Error("poll() not available");
return -1;
#endif /* !HAVE_POLL */
}
}

2
sysutils.h
View File

@ -74,7 +74,7 @@ extern int getusergroups(const char *user, gid_t *list, size_t *ngroups);
extern const char *hstrerror(int err);
#endif
extern int xiopoll(struct pollfd fds[], nfds_t nfds, int timeout);
extern int xiopoll(struct pollfd fds[], nfds_t nfds, struct timeval *timeout);
extern int parseport(const char *portname, int proto);

2
test.sh
View File

@ -5697,6 +5697,7 @@ if ! feat=$(testaddrs pty); then
$PRINTF "test $F_n $TEST... ${YELLOW}$(echo $feat |tr a-z A-Z) not available${NORMAL}\n" $N
numCANT=$((numCANT+1))
else
set -vx
SIG="$(signum $signam)"
te="$td/test$N.stderr"
tpp="$td/test$N.ppid"
@ -5725,6 +5726,7 @@ else
numFAIL=$((numFAIL+1))
fi
wait
set +vx
fi ;; # feat
esac
N=$((N+1))

9
xio-socket.c
View File

@ -840,18 +840,17 @@ int _xioopen_connect(struct single *xfd, struct sockaddr *us, size_t uslen,
if (errno == EINPROGRESS) {
if (xfd->para.socket.connect_timeout.tv_sec != 0 ||
xfd->para.socket.connect_timeout.tv_usec != 0) {
int timeout;
struct timeval timeout;
struct pollfd writefd;
int result;
Info4("connect(%d, %s, "F_Zd"): %s",
xfd->fd, sockaddr_info(them, themlen, infobuff, sizeof(infobuff)),
themlen, strerror(errno));
timeout = 1000*xfd->para.socket.connect_timeout.tv_sec +
xfd->para.socket.connect_timeout.tv_usec/1000;
timeout = xfd->para.socket.connect_timeout;
writefd.fd = xfd->fd;
writefd.events = (POLLIN|POLLHUP|POLLERR);
result = Poll(&writefd, 1, timeout);
result = xiopoll(&writefd, 1, &timeout);
if (result < 0) {
Msg3(level, "poll({%d,POLLIN|POLLHUP|POLLER},,%d): %s",
xfd->fd, timeout, strerror(errno));
@ -1319,7 +1318,7 @@ int _xioopen_dgram_recvfrom(struct single *xfd, int xioflags,
}
readfd.fd = xfd->fd;
readfd.events = POLLIN;
if (Poll(&readfd, 1, -1) > 0) {
if (xiopoll(&readfd, 1, NULL) > 0) {
break;
}

2
xio-udp.c
View File

@ -205,7 +205,7 @@ int xioopen_ipdgram_listen(int argc, const char *argv[], struct opt *opts,
sockaddr_info(&us.soa, uslen, infobuff, sizeof(infobuff)));
readfd.fd = fd->stream.fd;
readfd.events = POLLIN|POLLERR;
while (Poll(&readfd, 1, -1) < 0) {
while (xiopoll(&readfd, 1, NULL) < 0) {
if (errno != EINTR) break;
}