Am 14.05.12 10:13, schrieb Thiago Macieira:
> On segunda-feira, 14 de maio de 2012 10.03.47, Till Oliver Knoll wrote:
>> However I noticed a warning message in the console output which
>> appears just after the listen() call above:
>>
>> QSocketNotifier: Can only be used with threads started with QThread
>
> Run the sub-process with QT_FATAL_WARNINGS=1 and give us the backtrace of that
> warning.
Hmmm, not sure whether that is of any help (one doesn't see from which
thread *my* process gets started - it would be nice to be able to
compare the entire stack trace with when I start my process
non-sandboxed), but anyway, here is the error message I get, see below.
My main() is in net.till-art.Airplay, which links against my own library
libKernel, where initIPC() gets called which simply does a:
QLocalServer::removeServer(QDir::homePath() + "/aircontrol-port");
if (d->localServer.listen(QDir::homePath() + "/aircontrol-port")) {
qDebug( "Listening on server name: %s full Server Name: %s",
qPrintable(d->localServer.serverName()),
qPrintable(d->localServer.fullServerName()));
} else {
qDebug("Listen failed, error: %s",
qPrintable(d->localServer.errorString()));
}
When I don't define
export QT_FATAL_WARNINGS=1
then I get the warning, however listen() seems to succeed (I do get true
as a result). If defining QT_FATAL_WARNINGS, I get the following error
dialog, together with latest Qt 4.8.1 Cocoa binary distribution
(downloaded via SDK Updater):
Process: Airwave [3556]
Path: /Users/USER/*/Airwave.app/Contents/MacOS/Airwave
Identifier: net.till-art.Airplay
Version: ??? (1.0)
Code Type: X86-64 (Native)
Parent Process: bash [1474]
Date/Time: 2012-05-14 23:29:10.477 +0200
OS Version: Mac OS X 10.7.4 (11E53)
Report Version: 9
...
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
objc[3556]: garbage collection is OFF
abort() called
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff90679ce2 __pthread_kill + 10
1 libsystem_c.dylib 0x00007fff8cf037d2 pthread_kill + 95
2 libsystem_c.dylib 0x00007fff8cef4a7a abort + 143
3 QtCore 0x0000000101f1b8d5
qt_message_output(QtMsgType, char const*) + 117
4 QtCore 0x0000000101f1bab7
_ZL10qt_message9QtMsgTypePKcP13__va_list_tag + 183
5 QtCore 0x0000000101f1be3a qWarning(char
const*, ...) + 170
6 QtCore 0x000000010205c69e
QSocketNotifier::QSocketNotifier(int, QSocketNotifier::Type, QObject*) + 126
7 QtNetwork 0x0000000101125e38
QLocalServerPrivate::listen(QString const&) + 472
8 QtNetwork 0x000000010111d56b
QLocalServer::listen(QString const&) + 267
9 libKernel.1.0.0.dylib 0x000000010000f379 AirPlay::initIPC()
+ 621 (AirPlay.cpp:55)
10 net.till-art.Airplay 0x00000001000031c9
MainWindow::MainWindow(QWidget*) + 123 (MainWindow.cpp:17)
11 net.till-art.Airplay 0x0000000100003203
MainWindow::MainWindow(QWidget*) + 9 (MainWindow.cpp:18)
12 net.till-art.Airplay 0x0000000100002f49 main + 55
(qwidget.h:494)
13 net.till-art.Airplay 0x0000000100002ef0 start + 52
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff9067a7e6 kevent + 10
1 libdispatch.dylib 0x00007fff8e4d078a
_dispatch_mgr_invoke + 923
2 libdispatch.dylib 0x00007fff8e4cf31a
_dispatch_mgr_thread + 54
Thread 2:
0 libsystem_kernel.dylib 0x00007fff9067a192 __workq_kernreturn
+ 10
1 libsystem_c.dylib 0x00007fff8cf03594 _pthread_wqthread
+ 758
2 libsystem_c.dylib 0x00007fff8cf04b85 start_wqthread + 13
Thread 3:
0 libsystem_kernel.dylib 0x00007fff9067a192 __workq_kernreturn
+ 10
1 libsystem_c.dylib 0x00007fff8cf03594 _pthread_wqthread
+ 758
2 libsystem_c.dylib 0x00007fff8cf04b85 start_wqthread + 13
Thread 4:
0 libsystem_kernel.dylib 0x00007fff90679df2 __select + 10
1 QtCore 0x0000000100e196b0
QProcessManager::run() + 96
2 QtCore 0x0000000100d315ba
QThreadPrivate::start(void*) + 298
3 libsystem_c.dylib 0x00007fff8cf018bf _pthread_start + 335
4 libsystem_c.dylib 0x00007fff8cf04b75 thread_start + 13
Thread 5:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x00007fff90679df2 __select + 10
1 com.apple.CoreFoundation 0x00007fff8c783c8b __CFSocketManager
+ 1355
2 libsystem_c.dylib 0x00007fff8cf018bf _pthread_start + 335
3 libsystem_c.dylib 0x00007fff8cf04b75 thread_start + 13
Followed by all the "binary images" (linked libraries) and some system
information like memory usage, hardware info and the like.
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