rpms/qt
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

- add poll support to fix QAbstractSocket errors with more than

Browse Source 
1024 file descriptors, thanks Florian for the patch
This commit is contained in:
Than Ngo 2012-10-31 13:20:22 +01:00
parent 9e4d52712f
commit 8e4c02d46d
2 changed files with 813 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

804
qt-4.8-poll.patch Normal file
View File

@ -0,0 +1,804 @@
--- a/src/corelib/io/qprocess_unix.cpp
+++ a/src/corelib/io/qprocess_unix.cpp
@@ -139,13 +139,6 @@ static void qt_sa_sigchld_handler(int signum)
oldAction(signum);
}
-static inline void add_fd(int &nfds, int fd, fd_set *fdset)
-{
- FD_SET(fd, fdset);
- if ((fd) > nfds)
- nfds = fd;
-}
-
struct QProcessInfo {
QProcess *process;
int deathPipe;
@@ -231,9 +224,9 @@ QProcessManager::~QProcessManager()
void QProcessManager::run()
{
forever {
- fd_set readset;
- FD_ZERO(&readset);
- FD_SET(qt_qprocess_deadChild_pipe[0], &readset);
+ pollfd fd;
+ fd.fd = qt_qprocess_deadChild_pipe[0];
+ fd.events = POLLIN;
#if defined (QPROCESS_DEBUG)
qDebug() << "QProcessManager::run() waiting for children to die";
@@ -242,8 +235,8 @@ void QProcessManager::run()
// block forever, or until activity is detected on the dead child
// pipe. the only other peers are the SIGCHLD signal handler, and the
// QProcessManager destructor.
- int nselect = select(qt_qprocess_deadChild_pipe[0] + 1, &readset, 0, 0, 0);
- if (nselect < 0) {
+ int ret = qt_safe_poll(&fd, 1, -1, /* retry_eintr */ false);
+ if (ret < 0) {
if (errno == EINTR)
continue;
break;
@@ -992,17 +985,6 @@ void QProcessPrivate::killProcess()
::kill(pid_t(pid), SIGKILL);
}
-static int select_msecs(int nfds, fd_set *fdread, fd_set *fdwrite, int timeout)
-{
- if (timeout < 0)
- return qt_safe_select(nfds, fdread, fdwrite, 0, 0);
-
- struct timeval tv;
- tv.tv_sec = timeout / 1000;
- tv.tv_usec = (timeout % 1000) * 1000;
- return qt_safe_select(nfds, fdread, fdwrite, 0, &tv);
-}
-
/*
Returns the difference between msecs and elapsed. If msecs is -1,
however, -1 is returned.
@@ -1025,10 +1007,10 @@ bool QProcessPrivate::waitForStarted(int msecs)
childStartedPipe[0]);
#endif
- fd_set fds;
- FD_ZERO(&fds);
- FD_SET(childStartedPipe[0], &fds);
- if (select_msecs(childStartedPipe[0] + 1, &fds, 0, msecs) == 0) {
+ pollfd fd;
+ fd.fd = childStartedPipe[0];
+ fd.events = POLLIN;
+ if (qt_safe_poll(&fd, 1, msecs) == 0) {
processError = QProcess::Timedout;
q->setErrorString(QProcess::tr("Process operation timed out"));
#if defined (QPROCESS_DEBUG)
@@ -1044,6 +1026,47 @@ bool QProcessPrivate::waitForStarted(int msecs)
return startedEmitted;
}
+class QProcessFDSet {
+ pollfd fds[5];
+
+ static size_t size()
+ {
+ return sizeof(fds)/sizeof(fds[0]);
+ }
+
+public:
+ QProcessFDSet(QProcessPrivate &proc)
+ {
+ for (size_t i = 0; i < size(); ++i) {
+ fds[i].fd = -1;
+ fds[i].events = POLLIN;
+ }
+ death().fd = proc.deathPipe[0];
+
+ if (proc.processState == QProcess::Starting)
+ started().fd = proc.childStartedPipe[0];
+
+ stdout().fd = proc.stdoutChannel.pipe[0];
+ stderr().fd = proc.stderrChannel.pipe[0];
+
+ if (!proc.writeBuffer.isEmpty()) {
+ stdin().fd = proc.stdinChannel.pipe[1];
+ stdin().events = POLLOUT;
+ }
+ }
+
+ int poll(int timeout)
+ {
+ return qt_safe_poll(fds, size(), timeout);
+ }
+
+ pollfd &death() { return fds[0]; }
+ pollfd &started() { return fds[1]; }
+ pollfd &stdout() { return fds[2]; }
+ pollfd &stderr() { return fds[3]; }
+ pollfd &stdin() { return fds[4]; }
+};
+
bool QProcessPrivate::waitForReadyRead(int msecs)
{
Q_Q(QProcess);
@@ -1055,28 +1078,9 @@ bool QProcessPrivate::waitForReadyRead(int msecs)
stopWatch.start();
forever {
- fd_set fdread;
- fd_set fdwrite;
-
- FD_ZERO(&fdread);
- FD_ZERO(&fdwrite);
-
- int nfds = deathPipe[0];
- FD_SET(deathPipe[0], &fdread);
-
- if (processState == QProcess::Starting)
- add_fd(nfds, childStartedPipe[0], &fdread);
-
- if (stdoutChannel.pipe[0] != -1)
- add_fd(nfds, stdoutChannel.pipe[0], &fdread);
- if (stderrChannel.pipe[0] != -1)
- add_fd(nfds, stderrChannel.pipe[0], &fdread);
-
- if (!writeBuffer.isEmpty() && stdinChannel.pipe[1] != -1)
- add_fd(nfds, stdinChannel.pipe[1], &fdwrite);
-
+ QProcessFDSet fdset(*this);
int timeout = qt_timeout_value(msecs, stopWatch.elapsed());
- int ret = select_msecs(nfds + 1, &fdread, &fdwrite, timeout);
+ int ret = fdset.poll(timeout);
if (ret < 0) {
break;
}
@@ -1086,18 +1090,18 @@ bool QProcessPrivate::waitForReadyRead(int msecs)
return false;
}
- if (childStartedPipe[0] != -1 && FD_ISSET(childStartedPipe[0], &fdread)) {
+ if (qt_readable(fdset.started())) {
if (!_q_startupNotification())
return false;
}
bool readyReadEmitted = false;
- if (stdoutChannel.pipe[0] != -1 && FD_ISSET(stdoutChannel.pipe[0], &fdread)) {
+ if (qt_readable(fdset.stdout())) {
bool canRead = _q_canReadStandardOutput();
if (processChannel == QProcess::StandardOutput && canRead)
readyReadEmitted = true;
}
- if (stderrChannel.pipe[0] != -1 && FD_ISSET(stderrChannel.pipe[0], &fdread)) {
+ if (qt_readable(fdset.stderr())) {
bool canRead = _q_canReadStandardError();
if (processChannel == QProcess::StandardError && canRead)
readyReadEmitted = true;
@@ -1105,13 +1109,13 @@ bool QProcessPrivate::waitForReadyRead(int msecs)
if (readyReadEmitted)
return true;
- if (stdinChannel.pipe[1] != -1 && FD_ISSET(stdinChannel.pipe[1], &fdwrite))
+ if (qt_writable(fdset.stdin()))
_q_canWrite();
- if (deathPipe[0] == -1 || FD_ISSET(deathPipe[0], &fdread)) {
+ if (qt_readable(fdset.death())) {
if (_q_processDied())
return false;
- }
+ }
}
return false;
}
@@ -1127,29 +1131,9 @@ bool QProcessPrivate::waitForBytesWritten(int msecs)
stopWatch.start();
while (!writeBuffer.isEmpty()) {
- fd_set fdread;
- fd_set fdwrite;
-
- FD_ZERO(&fdread);
- FD_ZERO(&fdwrite);
-
- int nfds = deathPipe[0];
- FD_SET(deathPipe[0], &fdread);
-
- if (processState == QProcess::Starting)
- add_fd(nfds, childStartedPipe[0], &fdread);
-
- if (stdoutChannel.pipe[0] != -1)
- add_fd(nfds, stdoutChannel.pipe[0], &fdread);
- if (stderrChannel.pipe[0] != -1)
- add_fd(nfds, stderrChannel.pipe[0], &fdread);
-
-
- if (!writeBuffer.isEmpty() && stdinChannel.pipe[1] != -1)
- add_fd(nfds, stdinChannel.pipe[1], &fdwrite);
-
+ QProcessFDSet fdset(*this);
int timeout = qt_timeout_value(msecs, stopWatch.elapsed());
- int ret = select_msecs(nfds + 1, &fdread, &fdwrite, timeout);
+ int ret = fdset.poll(timeout);
if (ret < 0) {
break;
}
@@ -1160,24 +1144,24 @@ bool QProcessPrivate::waitForBytesWritten(int msecs)
return false;
}
- if (childStartedPipe[0] != -1 && FD_ISSET(childStartedPipe[0], &fdread)) {
+ if (qt_readable(fdset.started())) {
if (!_q_startupNotification())
return false;
}
- if (stdinChannel.pipe[1] != -1 && FD_ISSET(stdinChannel.pipe[1], &fdwrite))
+ if (qt_writable(fdset.stdin()))
return _q_canWrite();
- if (stdoutChannel.pipe[0] != -1 && FD_ISSET(stdoutChannel.pipe[0], &fdread))
+ if (qt_readable(fdset.stdout()))
_q_canReadStandardOutput();
- if (stderrChannel.pipe[0] != -1 && FD_ISSET(stderrChannel.pipe[0], &fdread))
+ if (qt_readable(fdset.stderr()))
_q_canReadStandardError();
- if (deathPipe[0] == -1 || FD_ISSET(deathPipe[0], &fdread)) {
- if (_q_processDied())
- return false;
- }
+ if (qt_readable(fdset.death())) {
+ if (_q_processDied())
+ return false;
+ }
}
return false;
@@ -1194,29 +1178,9 @@ bool QProcessPrivate::waitForFinished(int msecs)
stopWatch.start();
forever {
- fd_set fdread;
- fd_set fdwrite;
- int nfds = -1;
-
- FD_ZERO(&fdread);
- FD_ZERO(&fdwrite);
-
- if (processState == QProcess::Starting)
- add_fd(nfds, childStartedPipe[0], &fdread);
-
- if (stdoutChannel.pipe[0] != -1)
- add_fd(nfds, stdoutChannel.pipe[0], &fdread);
- if (stderrChannel.pipe[0] != -1)
- add_fd(nfds, stderrChannel.pipe[0], &fdread);
-
- if (processState == QProcess::Running)
- add_fd(nfds, deathPipe[0], &fdread);
-
- if (!writeBuffer.isEmpty() && stdinChannel.pipe[1] != -1)
- add_fd(nfds, stdinChannel.pipe[1], &fdwrite);
-
+ QProcessFDSet fdset(*this);
int timeout = qt_timeout_value(msecs, stopWatch.elapsed());
- int ret = select_msecs(nfds + 1, &fdread, &fdwrite, timeout);
+ int ret = fdset.poll(timeout);
if (ret < 0) {
break;
}
@@ -1226,20 +1190,20 @@ bool QProcessPrivate::waitForFinished(int msecs)
return false;
}
- if (childStartedPipe[0] != -1 && FD_ISSET(childStartedPipe[0], &fdread)) {
+ if (qt_readable(fdset.started())) {
if (!_q_startupNotification())
return false;
}
- if (stdinChannel.pipe[1] != -1 && FD_ISSET(stdinChannel.pipe[1], &fdwrite))
+ if (qt_writable(fdset.stdin()))
_q_canWrite();
- if (stdoutChannel.pipe[0] != -1 && FD_ISSET(stdoutChannel.pipe[0], &fdread))
+ if (qt_readable(fdset.stdout()))
_q_canReadStandardOutput();
- if (stderrChannel.pipe[0] != -1 && FD_ISSET(stderrChannel.pipe[0], &fdread))
+ if (qt_readable(fdset.stderr()))
_q_canReadStandardError();
- if (deathPipe[0] == -1 || FD_ISSET(deathPipe[0], &fdread)) {
+ if (qt_readable(fdset.death())) {
if (_q_processDied())
return true;
}
@@ -1249,10 +1213,10 @@ bool QProcessPrivate::waitForFinished(int msecs)
bool QProcessPrivate::waitForWrite(int msecs)
{
- fd_set fdwrite;
- FD_ZERO(&fdwrite);
- FD_SET(stdinChannel.pipe[1], &fdwrite);
- return select_msecs(stdinChannel.pipe[1] + 1, 0, &fdwrite, msecs < 0 ? 0 : msecs) == 1;
+ pollfd fd;
+ fd.fd = stdinChannel.pipe[1];
+ fd.events = POLLIN;
+ return qt_safe_poll(&fd, 1, msecs);
}
void QProcessPrivate::findExitCode()
--- a/src/corelib/kernel/qcore_unix.cpp
+++ a/src/corelib/kernel/qcore_unix.cpp
@@ -103,4 +103,165 @@ int qt_safe_select(int nfds, fd_set *fdread, fd_set *fdwrite, fd_set *fdexcept,
}
}
+#ifndef Q_OS_VXWORKS
+
+int qt_safe_poll(struct pollfd *fds, int nfds, int timeout_ms, bool retry_eintr)
+{
+ if (nfds == 0)
+ return 0;
+ if (nfds < 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Retry on ret == 0 if the deadline has not yet passed because
+ // Linux can return early from the syscall, without setting EINTR.
+ if (timeout_ms < 0) {
+ forever {
+ int ret = ::poll(fds, nfds, -1);
+ if (ret > 0)
+ return ret;
+ if (retry_eintr) {
+ if (ret == 0 || ret == -1 && errno == EINTR) {
+ continue;
+ } else {
+ return -1;
+ }
+ }
+ if (ret == 0) {
+ errno = EINTR;
+ return -1;
+ }
+ return ret;
+ }
+ }
+
+ timeval previous = qt_gettime();
+ timeval deadline = previous;
+ deadline.tv_sec += timeout_ms / 1000;
+ deadline.tv_usec += (timeout_ms % 1000) * 1000;
+ if (deadline.tv_usec >= 1000000) {
+ ++deadline.tv_sec;
+ deadline.tv_usec -= 1000000;
+ }
+ int remaining = timeout_ms;
+
+ forever {
+ int ret = ::poll(fds, nfds, remaining);
+ if (ret > 0)
+ return ret;
+ timeval now = qt_gettime();
+ if ((now.tv_sec > deadline.tv_sec // past deadline
+ || (now.tv_sec == deadline.tv_sec
+ && now.tv_usec >= deadline.tv_usec))
+ || (now.tv_sec < previous.tv_sec // time warp
+ || (now.tv_sec == previous.tv_sec
+ && now.tv_usec < previous.tv_usec))
+ || (ret < 0 && (errno != EINTR || !retry_eintr))) // other error
+ return ret;
+ if (ret == 0 && !retry_eintr) {
+ errno = EINTR;
+ return -1;
+ }
+ remaining = (deadline.tv_sec - now.tv_sec) * 1000
+ + (deadline.tv_usec - now.tv_usec) / 1000;
+ previous = now;
+ }
+}
+
+#else
+
+// Poll emulation for VxWorks.
+
+static int mark_bad_descriptors(pollfd *fds, int nfds)
+{
+ fd_set r;
+ FD_ZERO(&r);
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 0;
+ int ret = 0;
+
+ // Check each descriptor invidually for badness.
+ for (int i = 0; i < nfds; ++i) {
+ pollfd &fd(fds[i]);
+ if (fd.fd >= 0) {
+ FD_SET(fd.fd, &r);
+ int ret = qt_safe_select(fd.fd + 1, &r, NULL, NULL, &tv);
+ FD_CLR(fd.fd, &r);
+ if (ret < 0 && errno == EBADF) {
+ fd.revents = POLLNVAL;
+ ++ret;
+ }
+ }
+ }
+ Q_ASSERT(ret > 0);
+ return ret;
+}
+
+int qt_safe_poll(pollfd *fds, int nfds, int timeout, bool retry_eintr)
+{
+ fd_set r, w;
+ FD_ZERO(&r);
+ FD_ZERO(&w);
+ int maxfd = -1;
+
+ // Extract the watched descriptors.
+ for (int i = 0; i < nfds; ++i) {
+ pollfd &fd(fds[i]);
+ if (fd.fd >= 0 && fd.fd < FD_SETSIZE) {
+ if (fd.events & POLLIN) {
+ FD_SET(fd.fd, &r);
+ if (fd.fd > maxfd)
+ maxfd = fd.fd;
+ }
+ if (fd.events & POLLOUT) {
+ FD_SET(fd.fd, &w);
+ if (fd.fd > maxfd)
+ maxfd = fd.fd;
+ }
+ }
+ }
+
+ // If timeout is negative, wait indefinitely for activity.
+ timeval tv;
+ timeval *ptv;
+ if (timeout >= 0) {
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000;
+ ptv = &tv;
+ } else
+ ptv = NULL;
+
+ int ret;
+ if (retry_eintr)
+ ret = qt_safe_select(maxfd + 1, &r, &w, NULL, ptv);
+ else
+ ret = ::select(maxfd + 1, &r, &w, NULL, ptv);
+ if (ret < 0 && errno == EBADF) {
+ return mark_bad_descriptors(fds, nfds);
+ }
+ if (ret <= 0)
+ return ret;
+
+ // Set the revents flags.
+ ret = 0;
+ for (int i = 0; i < nfds; ++i) {
+ pollfd &fd(fds[i]);
+ fd.revents = 0;
+ if (fd.fd >= 0 && fd.fd < FD_SETSIZE) {
+ if ((fd.events & POLLIN) && FD_ISSET(fd.fd, &r))
+ fd.revents |= POLLIN;
+ if ((fd.events & POLLOUT) && FD_ISSET(fd.fd, &w))
+ fd.revents |= POLLOUT;
+ if (fd.revents)
+ ++ret;
+ }
+ }
+ Q_ASSERT(ret > 0);
+ return ret;
+}
+
+#endif
+
QT_END_NAMESPACE
--- a/src/corelib/kernel/qcore_unix_p.h
+++ a/src/corelib/kernel/qcore_unix_p.h
@@ -316,9 +316,42 @@ static inline pid_t qt_safe_waitpid(pid_t pid, int *status, int options)
timeval qt_gettime(); // in qelapsedtimer_mac.cpp or qtimestamp_unix.cpp
+// Deprecated due to FD_SETSIZE limitation, use qt_safe_poll instead.
Q_CORE_EXPORT int qt_safe_select(int nfds, fd_set *fdread, fd_set *fdwrite, fd_set *fdexcept,
const struct timeval *tv);
+#ifndef Q_OS_VXWORKS
+#include <poll.h>
+#else
+
+// Poll emulation for VxWorks.
+
+struct pollfd {
+ int fd;
+ short events;
+ short revents;
+};
+
+#define POLLIN 1
+#define POLLOUT 2
+#define POLLERR 4
+#define POLLHUP 8
+#define POLLNVAL 16
+#endif
+
+inline bool qt_readable(const pollfd &fd)
+{
+ return fd.fd >= 0 && (fd.revents & (POLLIN | POLLHUP | POLLERR | POLLNVAL)) != 0;
+}
+
+inline bool qt_writable(const pollfd &fd)
+{
+ return fd.fd >= 0 && (fd.revents & (POLLOUT | POLLHUP | POLLERR | POLLNVAL)) != 0;
+}
+
+Q_CORE_EXPORT int qt_safe_poll(pollfd *fds, int nfds, int timeout,
+ bool retry_eintr = true);
+
// according to X/OPEN we have to define semun ourselves
// we use prefix as on some systems sem.h will have it
struct semid_ds;
--- a/src/network/socket/qlocalserver_unix.cpp
+++ a/src/network/socket/qlocalserver_unix.cpp
@@ -208,16 +208,11 @@ void QLocalServerPrivate::_q_onNewConnection()
void QLocalServerPrivate::waitForNewConnection(int msec, bool *timedOut)
{
- fd_set readfds;
- FD_ZERO(&readfds);
- FD_SET(listenSocket, &readfds);
+ struct pollfd fd;
+ fd.fd = listenSocket;
+ fd.events = POLLIN;
- timeval timeout;
- timeout.tv_sec = msec / 1000;
- timeout.tv_usec = (msec % 1000) * 1000;
-
- int result = -1;
- result = qt_safe_select(listenSocket + 1, &readfds, 0, 0, (msec == -1) ? 0 : &timeout);
+ int result = qt_safe_poll(&fd, 1, msec);
if (-1 == result) {
setError(QLatin1String("QLocalServer::waitForNewConnection"));
closeServer();
--- a/src/network/socket/qlocalsocket_unix.cpp
+++ a/src/network/socket/qlocalsocket_unix.cpp
@@ -56,10 +56,6 @@
#include <qdebug.h>
#include <qelapsedtimer.h>
-#ifdef Q_OS_VXWORKS
-# include <selectLib.h>
-#endif
-
#define QT_CONNECT_TIMEOUT 30000
QT_BEGIN_NAMESPACE
@@ -520,32 +516,17 @@ bool QLocalSocket::waitForConnected(int msec)
if (state() != ConnectingState)
return (state() == ConnectedState);
- fd_set fds;
- FD_ZERO(&fds);
- FD_SET(d->connectingSocket, &fds);
-
- timeval timeout;
- timeout.tv_sec = msec / 1000;
- timeout.tv_usec = (msec % 1000) * 1000;
-
- // timeout can not be 0 or else select will return an error.
- if (0 == msec)
- timeout.tv_usec = 1000;
+ pollfd fd;
+ fd.fd = d->connectingSocket;
+ fd.events = POLLIN | POLLOUT;
int result = -1;
// on Linux timeout will be updated by select, but _not_ on other systems.
QElapsedTimer timer;
+ int remaining = msec;
timer.start();
- while (state() == ConnectingState
- && (-1 == msec || timer.elapsed() < msec)) {
-#ifdef Q_OS_SYMBIAN
- // On Symbian, ready-to-write is signaled when non-blocking socket
- // connect is finised. Is ready-to-read really used on other
- // UNIX paltforms when using non-blocking AF_UNIX socket?
- result = ::select(d->connectingSocket + 1, 0, &fds, 0, &timeout);
-#else
- result = ::select(d->connectingSocket + 1, &fds, 0, 0, &timeout);
-#endif
+ while (state() == ConnectingState) {
+ result = qt_safe_poll(&fd, 1, remaining, /* retry_eintr */ false);
if (-1 == result && errno != EINTR) {
d->errorOccurred( QLocalSocket::UnknownSocketError,
QLatin1String("QLocalSocket::waitForConnected"));
@@ -553,6 +534,11 @@ bool QLocalSocket::waitForConnected(int msec)
}
if (result > 0)
d->_q_connectToSocket();
+ if (msec >= 0) {
+ remaining = timer.elapsed() - msec;
+ if (remaining < 0)
+ break;
+ }
}
return (state() == ConnectedState);
--- a/src/network/socket/qnativesocketengine_unix.cpp
+++ a/src/network/socket/qnativesocketengine_unix.cpp
@@ -1090,48 +1090,40 @@ qint64 QNativeSocketEnginePrivate::nativeRead(char *data, qint64 maxSize)
int QNativeSocketEnginePrivate::nativeSelect(int timeout, bool selectForRead) const
{
- fd_set fds;
- FD_ZERO(&fds);
- FD_SET(socketDescriptor, &fds);
-
- struct timeval tv;
- tv.tv_sec = timeout / 1000;
- tv.tv_usec = (timeout % 1000) * 1000;
-
- int retval;
- if (selectForRead)
- retval = qt_safe_select(socketDescriptor + 1, &fds, 0, 0, timeout < 0 ? 0 : &tv);
- else
- retval = qt_safe_select(socketDescriptor + 1, 0, &fds, 0, timeout < 0 ? 0 : &tv);
-
- return retval;
+ struct pollfd fd;
+ fd.fd = socketDescriptor;
+ if (selectForRead) {
+ fd.events = POLLIN;
+ } else {
+ fd.events = POLLOUT;
+ }
+ return qt_safe_poll(&fd, 1, timeout);
}
int QNativeSocketEnginePrivate::nativeSelect(int timeout, bool checkRead, bool checkWrite,
bool *selectForRead, bool *selectForWrite) const
{
- fd_set fdread;
- FD_ZERO(&fdread);
+ struct pollfd fd;
+ fd.fd = socketDescriptor;
if (checkRead)
- FD_SET(socketDescriptor, &fdread);
-
- fd_set fdwrite;
- FD_ZERO(&fdwrite);
+ fd.events = POLLIN;
+ else
+ fd.events = 0;
if (checkWrite)
- FD_SET(socketDescriptor, &fdwrite);
-
- struct timeval tv;
- tv.tv_sec = timeout / 1000;
- tv.tv_usec = (timeout % 1000) * 1000;
-
- int ret;
- ret = qt_safe_select(socketDescriptor + 1, &fdread, &fdwrite, 0, timeout < 0 ? 0 : &tv);
-
+ fd.events |= POLLOUT;
+ int ret = qt_safe_poll(&fd, 1, timeout);
if (ret <= 0)
- return ret;
- *selectForRead = FD_ISSET(socketDescriptor, &fdread);
- *selectForWrite = FD_ISSET(socketDescriptor, &fdwrite);
-
+ return ret;
+ bool r = (fd.revents & (POLLIN | POLLHUP | POLLERR)) != 0;
+ bool w = (fd.revents & (POLLOUT | POLLHUP | POLLERR)) != 0;
+ // Emulate the return value from select(2).
+ ret = 0;
+ if (r)
+ ++ret;
+ if (w)
+ ++ret;
+ *selectForRead = r;
+ *selectForWrite = w;
return ret;
}
--- a/src/qt3support/network/q3socketdevice_unix.cpp
+++ a/src/qt3support/network/q3socketdevice_unix.cpp
@@ -68,6 +68,7 @@ static inline int qt_socket_socket(int domain, int type, int protocol)
#endif
#include "q3socketdevice.h"
+#include "private/qcore_unix_p.h"
#ifndef QT_NO_NETWORK
@@ -588,19 +589,10 @@ Q_LONG Q3SocketDevice::waitForMore( int msecs, bool *timeout ) const
{
if ( !isValid() )
return -1;
- if ( fd >= FD_SETSIZE )
- return -1;
-
- fd_set fds;
- struct timeval tv;
-
- FD_ZERO( &fds );
- FD_SET( fd, &fds );
-
- tv.tv_sec = msecs / 1000;
- tv.tv_usec = (msecs % 1000) * 1000;
- int rv = select( fd+1, &fds, 0, 0, msecs < 0 ? 0 : &tv );
+ pollfd pfd;
+ pfd.fd = fd;
+ int rv = qt_safe_poll(&pfd, 1, msecs, /* retry_eintr */ false);
if ( rv < 0 )
return -1;
--- a/src/qt3support/other/q3process_unix.cpp
+++ a/src/qt3support/other/q3process_unix.cpp
@@ -981,13 +981,10 @@ bool Q3Process::isRunning() const
// On heavy processing, the socket notifier for the sigchild might not
// have found time to fire yet.
if ( d->procManager && d->procManager->sigchldFd[1] < FD_SETSIZE ) {
- fd_set fds;
- struct timeval tv;
- FD_ZERO( &fds );
- FD_SET( d->procManager->sigchldFd[1], &fds );
- tv.tv_sec = 0;
- tv.tv_usec = 0;
- if ( ::select( d->procManager->sigchldFd[1]+1, &fds, 0, 0, &tv ) > 0 )
+ pollfd fd;
+ fd.fd = d->procManager->sigchldFd[1];
+ fd.events = POLLIN;
+ if ( qt_safe_poll(&fd, 1, 0, /* retry_eintr */ false) > 0 )
d->procManager->sigchldHnd( d->procManager->sigchldFd[1] );
}
@@ -1124,29 +1121,21 @@ void Q3Process::socketRead( int fd )
}
}
- if ( fd < FD_SETSIZE ) {
- fd_set fds;
- struct timeval tv;
- FD_ZERO( &fds );
- FD_SET( fd, &fds );
- tv.tv_sec = 0;
- tv.tv_usec = 0;
- while ( ::select( fd+1, &fds, 0, 0, &tv ) > 0 ) {
- // prepare for the next round
- FD_ZERO( &fds );
- FD_SET( fd, &fds );
- // read data
- ba = new QByteArray( basize );
- n = ::read( fd, ba->data(), basize );
- if ( n > 0 ) {
- ba->resize( n );
- buffer->append( ba );
- ba = 0;
- } else {
- delete ba;
- ba = 0;
- break;
- }
+ pollfd pfd;
+ pfd.fd = fd;
+ pfd.events = POLLIN;
+ while (qt_safe_poll(&pfd, 1, 0)) {
+ // read data
+ ba = new QByteArray( basize );
+ n = ::read( fd, ba->data(), basize );
+ if ( n > 0 ) {
+ ba->resize( n );
+ buffer->append( ba );
+ ba = 0;
+ } else {
+ delete ba;
+ ba = 0;
+ break;
}
}

10
qt.spec
View File

@ -16,7 +16,7 @@ Summary: Qt toolkit
Name: qt
Epoch: 1
Version: 4.8.3
Release: 7%{?dist}
Release: 8%{?dist}
# See LGPL_EXCEPTIONS.txt, LICENSE.GPL3, respectively, for exception details
License: (LGPLv2 with exceptions or GPLv3 with exceptions) and ASL 2.0 and BSD and FTL and MIT
@ -116,6 +116,9 @@ Patch81: qt-everywhere-opensource-src-4.8.2--assistant-crash.patch
# QDir::homePath() should account for an empty HOME environment variable on X11
Patch82: qt-everywhere-opensource-src-4.8.3-QTBUG-4862.patch
# poll support
Patch83: qt-4.8-poll.patch
# upstream patches
# http://codereview.qt-project.org/#change,22006
Patch100: qt-everywhere-opensource-src-4.8.1-qtgahandle.patch
@ -466,6 +469,7 @@ rm -fv mkspecs/linux-g++*/qmake.conf.multilib-optflags
%patch80 -p1 -b .ld.gold
%patch81 -p1 -b .assistant-crash
%patch82 -p1 -b .QTBUG-4862
%patch83 -p1 -b .poll
# upstream patches
%patch100 -p1 -b .QTgaHandler
@ -1109,6 +1113,10 @@ fi
%changelog
* Wed Oct 31 2012 Than Ngo <than@redhat.com> - 1:4.8.3-8
- add poll support to fix QAbstractSocket errors with more than
1024 file descriptors, thanks Florian for the patch
* Wed Oct 24 2012 Rex Dieter <rdieter@fedoraproject.org> 1:4.8.3-7
- Crash in Qt script (QTBUG-27322)