Drop process output to nullDevice(), if an application does not request
forwarding, redirecting or reading from the device channel. This
prevents from accumulation of unnecessary data which can not be read.
Change-Id: Ia311a8c658a46cf580ffa9484c5369f3fc5f98a7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
All overloads of QProcess::start will now check whether the program
string is empty and in that case
- set error to FailedToStart,
- set errorString to "No program defined",
- emit error.
Until now only one of the three overloads behaved like this.
As a side effect, start(QString(), QStringList()) will not crash on
Windows anymore.
Task-number: QTBUG-47404
Change-Id: I2f93657204fe3643b1d74a74817843c05fc4a96b
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
[ChangeLog][QtCore][QProcess] Fixed a bug that caused QProcess to launch
a child process on Unix even if the directory specified with
setWorkingDirectory did not exist.
Task-number: QTBUG-47271
Change-Id: Ib306f8f647014b399b87ffff13f195158b0e52f5
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Make the name of the signal and the name of the getter unambiguous,
which in turn allows the easy use of Qt 5-style connects.
[ChangeLog][QtCore] Deprecated QProcess::error() signal in favor
of new QProcess::errorOccurred() one.
Change-Id: Ic5bcf7d6878e6985f1b4fed9dbe247527d13758c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
They didn't show up in the "old" CI runs because they usually pass the second
time they are executed - which the testrunner does. The new CI doesn't do that
anymore, instead we now mark those tests explicitly and will track their record
of passing and failing in the new metrics database.
Change-Id: Id34dd6f792f38995b07b6fec88f833df64de2f8b
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Outdated header.LGPL removed (use header.LGPL21 instead)
Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)
Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination
Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
QNX posix_spawn() implementation actually allows for detecting whether a
non-existent process has failed to start.
Change-Id: Ic1bf8da0d4636f1d7d9b7b4cf6ad45376f6df0ed
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Most posix_spawn implementations are done using fork(), so the only way
to report errors afer fork() is via a special exit code.
Reference: http://pubs.opengroup.org/onlinepubs/009695399/functions/posix_spawn.html
Change-Id: I3a37f81b0cb278bb31e5cb83c87e6b4c034dbc19
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Replace the existing code in QProcess that dealt with signaling of child
processes exiting with forkfd and spawnfd. The previous code was
convoluted and hard to maintain, having shown its age in the last
year. I've been running it for a year and a half and the new
implementation is definitely an improvement.
This change replaces support for the QNX Neutrino spawn() call with the
POSIX version. We lose the ability to do setsid(), but we gain quite a
few ioctls() that were done to fill in the file descriptor mapping
structure. That's also the only OS for which we have the ability to
thread-safely chdir() before the call to spawnfd().
Another advantage is that forkfd does not require a dedicated thread
running to handle child processes exiting.
Change-Id: I5eb76821dfdb6a8ed2989d7f53b3c31e515c3174
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
The previous implementation required one syscall per child we're waiting
on to see which one exited. That means the algorithm was O(n).
This implementation uses WNOWAIT to find out which child exited and then
goes straight to that one. So it's O(1) on the number of children, but
runs 2 * number_of_children_that_exited + 1 syscalls, assuming there are
no race conditions with other threads. If there are or if a child not
started by forkfd exits, we'll still iterate over each child we're
managing to see which one exited.
It modifies the existing code so that it will do a waitid() with WNOWAIT
to check on the status of the child: if the child has exited, we'll try
to lock the entry so only one thread will do the final wait(). In the
case we read the PID, then the child exited, was reaped by another
thread, the PID got recycled and that child exited again, we'll fail to
lock the ProcessInfo entry so no harm comes. If by an absurd coincidence
this other child was started by forkfd() and its ProcessInfo is exactly
the one we are looking at, then we'll succeed in locking but that's a
benign race: we'll do what the other thread was trying to do and the
other thread will give up.
Future improvements to the algorithm are discussed in the Gerrit change.
Change-Id: Ie74836dbc388cd9b3fa375a41a8d944602a32df1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Conflicts:
mkspecs/qnx-x86-qcc/qplatformdefs.h
src/corelib/global/qglobal.h
src/network/socket/qnativesocketengine_winrt.cpp
src/plugins/platforms/android/androidjniaccessibility.cpp
src/plugins/platforms/windows/qwindowswindow.cpp
Manually adjusted:
mkspecs/qnx-armle-v7-qcc/qplatformdefs.h
to include 9ce697f2d5
Thanks goes to Sergio for the qnx mkspecs adjustments.
Change-Id: I53b1fd6bc5bc884e5ee2c2b84975f58171a1cb8e
On Unix systems where the GUI event dispatcher uses a notification
system for socket notifiers that is out of band compared to select(),
it's possible for the QSocketNotifier to activate after the pipe has
been read from. When that happened, the ioctl(2) call with FIONREAD
might return 0 bytes available, which we interpreted to mean EOF.
Instead of doing that, always try to read at least one byte and examine
the returned byte count from read(2). If it returns 0, that's a real
EOF; if it returns -1 EWOULDBLOCK, we simply ignore the situation.
That's the case on OS X: the Cocoa event dispatcher uses CFSocket to get
notifications and those use kevent (and, apparently, an auxiliary
thread) instead of an in-thread select() or poll(). That means the event
loop would activate the QSocketNotifier even though there is nothing to
be read.
Task-number: QTBUG-39488
Change-Id: I1a58b5b1db7a47034fb36a78a005ebff96290efb
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
The intent is to provide compile time validation of signals and to help
detect signal overloading in the future.
Change-Id: I9d5d46ed4b70c5d0cd407deb5928b1e76d37e007
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>
This test takes more than 5000ms to finish some times, so waiting
for 10000ms should be enough to make it more stable on all
platforms.
../tst_qprocess.cpp:1072 :: [gui app]
QTestLib: This test case check ("proc.waitedForFinished") failed because the requested timeout (5000 ms) was too short, 6150 ms would have been sufficient this time.
Change-Id: I266ad0e65bf3c84e73b7ca6543dc15335dad4c99
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
It was not possible to get the actual process ID (in a cross-platform
manner) from QProcess, as the user would need to handle the returned
typedef (Q_PID) differently on Unix and Windows.
On Unix Q_PID is the actual process ID, but on Windows it's a pointer
to a PROCESS_INFORMATION structure, which among other fields contains
the process ID. Instead of returning a pointer on Windows,
QProcess::processId() will return the actual process ID on both Windows
and Unix.
[ChangeLog][QtCore][QProcess] Added processId() to QProcess. This
function will, unlike pid(), return the actual process identifier on
both Window and Unix.
Task-number: QTBUG-26136
Change-Id: I853ab721297e2dd9cda006666144179a9e25b73d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Commit 773dd01 introduced a general mingw platform scope, which
is cleaner and more flexible than matching the spec name.
Change-Id: Ie3a9cb791a83f7c8a51bc4e23069190c452ab521
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
To be able to call SetNamedPipeHandleState on stdin in a child
process, we must create a read-end pipe handle with the
FILE_WRITE_ATTRIBUTES flag set.
This can't be done with CreateNamedPipe but only with CreateFile.
Therefore we're creating the handles for the child process always
with CreateFile now. Besides, it's conceptually cleaner to have the
server handle of the named pipe in the calling process.
[ChangeLog][QtCore][Windows] Fix regression from Qt4 in QProcess.
It wasn't possible anymore to alter pipe modes of stdin in child
processes.
Task-number: QTBUG-35357
Change-Id: I85f09753d0c924bdc8a6cef1ea5dbe6b2299c604
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
this enables forwarding standard input from the parent process.
Change-Id: I7ee72b9842acc96320d4da693b95dd15d9a7b4d4
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
forwardedChannelsOutput() actually tests forwarding. also having the
older test only eats CPU cycles.
rename the new test to the old name for clarity.
Change-Id: I16a326c8692bb594d7df7897bc53d31b23c66d90
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
close stdin and let the process finish right away instead of first
waiting for a reaction (which is not supposed to come) and then
finishing.
Change-Id: Ifcf200eead5ed95217843e105f9d2dbb5398d646
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Invoking waitForStarted() on a QProcess before or after an unsuccessful
call to start() (e.g., with an empty command), would execute FD_SET with
an invalid file descriptor and cause the process to abort.
The bug can be reliably reproduced on OSX.
Task-number: QTBUG-32958
Change-Id: Id25b7781168489281645e21571361ca1a71d43e3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The rule for a new override is that it must still work if the old
implementation is called. The catch is that any class that derives from
QProcess and isn't recompiled will still have QIODevice::open in its
virtual table. That is equivalent to overriding open() and calling
QIODevice::open() (like the tests).
In Qt 5.0, QProcess::start() called QIODevice::open directly, not the
virtual open(), so there's no expectation that a user-overridden open()
be called. With that in mind, simply fix QProcess::start to not call the
virtual open at all.
Similarly with QLocalSocket, the calls to open were always non-virtual.
Task-number: QTBUG-32284
Change-Id: I88925f0ba08bc23c849658b54582744997e69a4c
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Instead of calling different wait functions on different platforms,
we use QTRY_COMPARE to check the process state.
Change-Id: I6489cabce9e63f9c8b1036f3cccbf35b52df72e7
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Andreas Holzammer <andreas.holzammer@kdab.com>
If a process dies before all output is read into the internal buffer
of QProcess, we might lose data. Therefore we must drain the output
pipes like we already do in the synchronous wait functions.
Task-number: QTBUG-30843
Change-Id: I8bbc5265275c9ebd33218ba600267ae87d93ed61
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Remove all trailing whitespace from the following list of files:
*.cpp *.h *.conf *.qdoc *.pro *.pri *.mm *.rc *.pl *.qps *.xpm *.txt *README
excluding 3rdparty, test-data and auto generated code.
Note A): the only non 3rdparty c++-files that still
have trailing whitespace after this change are:
* src/corelib/codecs/cp949codetbl_p.h
* src/corelib/codecs/qjpunicode.cpp
* src/corelib/codecs/qbig5codec.cpp
* src/corelib/xml/qxmlstream_p.h
* src/tools/qdoc/qmlparser/qqmljsgrammar.cpp
* src/tools/uic/ui4.cpp
* tests/auto/other/qtokenautomaton/tokenizers/*
* tests/benchmarks/corelib/tools/qstring/data.cpp
* util/lexgen/tokenizer.cpp
Note B): in about 30 files some overlapping 'leading tab' and
'TAB character in non-leading whitespace' issues have been fixed
to make the sanity bot happy. Plus some general ws-fixes here
and there as asked for during review.
Change-Id: Ia713113c34d82442d6ce4d93d8b1cf545075d11d
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Add setProgram() and setArguments() methods to the QProcess api.
Add a convenient start(QIODevice::OpenMode) method.
Move the implementation of QProcess::start() to QProcess::open()
unifying the QProcess api with other QIODevice subclasses.
Change-Id: Id1af57da05f750fe8d526d391589c05ee8037bca
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This is to ensure that the compiler won't optimise it out of existence.
Clang says it will do it:
testProcessCrash/main.cpp:50:5: warning: indirection of non-volatile null pointer will be deleted, not trap [-Wnull-dereference]
*(char*)0 = 0;
^~~~~~~~~
Change-Id: Iac7771046442f869e205e8789fffdd6443d58e67
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
These types are either built-in or 'automatically declared' and so
don't need to be explicitly declared as metatypes.
Change-Id: Ifd116dee32a450ff89a9a1011e26b434765d6e95
Reviewed-by: David Faure <david.faure@kdab.com>
this is much more elegant than the so far propagated !isEmpty(QT.foo.name).
also replace feature-specific tests (no-gui and no-widgets) and the
obsolete contains(QT_CONFIG, foo) syntax.
Change-Id: Ia4b3c8febcabf9eeca67b1f9173a523820b1038b
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Reviewed-by: Tasuku Suzuki <stasuku@gmail.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
The QSslSocket one is both wrong and redundant as there is a
Q_DECLARE_METATYPE for it already.
Change-Id: I63d065abfb3d0e3d82a8b1f29a6752b7676db847
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
If ReadFile returns with an error then we must set our internal state
accordingly. QWindowsPipeReader::readSequenceStarted must be set to
false. If ReadFile fails, we're not within a read sequence.
Also, we must handle the ERROR_BROKEN_PIPE error.
Task-number: QTBUG-25342
Change-Id: Ic9247f170fa9cc47fa7e45d0f47ccfedac06a593
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Remove QSKIP and instead omit the whole tests when appropriate.
Remove QSKIP from crashTest, crashTest2 and exitStatus on Windows,
the tests are now passing.
Add a guard in testForwarding to check if QT_NO_PROCESS is defined.
Change-Id: Icba4d773315e3bf87764a381742168b51cf169c0
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
Normalise all signal/slot signatures in tests/*/corelib,
except in tst_QObject, where they might be test data.
Change-Id: Id4e101f285b1676bb583b0afae06d235e599e24b
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
tst_QProcess::echoTest_performance() is not an unit test but a
performance test, so moving it from 'tests/auto/corelib/io/qprocess'
to 'tests/benchmarks/corelib/io/qprocess'
Change-Id: I796788534eafc5ca3b8d86c0ec46998285fd4b8f
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
