void
KCrash::setEmergencySaveFunction(HandlerType saveFunction)
{
s_emergencySaveFunction = saveFunction;
/*
* We need at least the default crash handler for
* emergencySaveFunction to be called
*/
if (s_emergencySaveFunction && !s_crashHandler) {
setCrashHandler(defaultCrashHandler);
}
}
SocketExternalInstance::SocketExternalInstance()
: ExternalInstance(), memory_(new QSharedMemory(GLOG_SERVICE_NAME) )
{
if ( !memory_->attach( QSharedMemory::ReadOnly ) ) {
throw CantCreateExternalErr();
}
#ifdef Q_OS_UNIX
// Handle any further termination signals to ensure the
// QSharedMemory block is deleted even if the process crashes
setCrashHandler(memory_);
#endif
}
void
KCrash::setFlags(KCrash::CrashFlags flags)
{
s_flags = flags;
if (s_flags & AutoRestart) {
// We need at least the default crash handler for autorestart to work.
if (!s_crashHandler) {
KCmdLineArgs *args = KCmdLineArgs::parsedArgs("kde");
if (!args->isSet("crashhandler")) // --nocrashhandler was passed, probably due to a crash, delay restart handler
new KCrashDelaySetHandler;
else // probably because KDE_DEBUG=1. set restart handler immediately.
setCrashHandler(defaultCrashHandler);
}
}
}
void SocketExternalCommunicator::startListening()
{
if ( memory_->create(sizeof(qint32))) {
#ifdef Q_OS_UNIX
// Handle any further termination signals to ensure the
// QSharedMemory block is deleted even if the process crashes
setCrashHandler(memory_);
#endif
*reinterpret_cast<qint32*>(memory_->data()) = version();
QLocalServer::removeServer(GLOG_SERVICE_NAME);
connect(server_, SIGNAL(newConnection()), SLOT(onConnection()));
server_->listen(GLOG_SERVICE_NAME);
}
}
void KCrash::setDrKonqiEnabled(bool enabled)
{
s_launchDrKonqi = enabled;
if (s_launchDrKonqi && !s_drkonqiPath) {
s_drkonqiPath = qstrdup(QFile::encodeName(KStandardDirs::findExe("drkonqi")).constData());
if (!s_drkonqiPath) {
kError() << "Could not find drkonqi";
s_launchDrKonqi = false;
}
}
//we need at least the default crash handler to launch drkonqi
if (s_launchDrKonqi && !s_crashHandler) {
setCrashHandler(defaultCrashHandler);
}
}
void
KCrash::defaultCrashHandler (int sig)
{
// WABA: Do NOT use kDebug() in this function because it is much too risky!
// Handle possible recursions
static int crashRecursionCounter = 0;
crashRecursionCounter++; // Nothing before this, please !
#if !defined(Q_OS_WIN)
signal(SIGALRM, SIG_DFL);
alarm(3); // Kill me... (in case we deadlock in malloc)
#endif
#ifdef Q_OS_SOLARIS
(void) printstack(2 /* stderr, assuming it's still open. */);
#endif
if (crashRecursionCounter < 2) {
if (s_emergencySaveFunction) {
s_emergencySaveFunction (sig);
}
if ((s_flags & AutoRestart) && s_autoRestartCommand) {
sleep(1);
startProcess(s_autoRestartArgc, const_cast<const char**>(s_autoRestartCommandLine), false);
}
crashRecursionCounter++;
}
#if !defined(Q_OS_WIN)
if (!(s_flags & KeepFDs))
closeAllFDs();
# if defined(Q_WS_X11)
else if (QX11Info::display())
close(ConnectionNumber(QX11Info::display()));
# endif
#endif
if (crashRecursionCounter < 3)
{
#ifndef NDEBUG
fprintf(stderr, "KCrash: crashing... crashRecursionCounter = %d\n",
crashRecursionCounter);
fprintf(stderr, "KCrash: Application Name = %s path = %s pid = %lld\n",
s_appName ? s_appName : "<unknown>" ,
s_appPath ? s_appPath : "<unknown>", QCoreApplication::applicationPid());
fprintf(stderr, "KCrash: Arguments: ");
for (int i = 0; s_autoRestartCommandLine[i]; ++i) {
fprintf(stderr, "%s ", s_autoRestartCommandLine[i]);
}
fprintf(stderr, "\n");
#else
fprintf(stderr, "KCrash: Application '%s' crashing...\n",
s_appName ? s_appName : "<unknown>");
#endif
if (!s_launchDrKonqi) {
setCrashHandler(0);
#if !defined(Q_OS_WIN)
raise(sig); // dump core, or whatever is the default action for this signal.
#endif
return;
}
const char * argv[27]; // don't forget to update this
int i = 0;
// argument 0 has to be drkonqi
argv[i++] = s_drkonqiPath;
#if defined Q_WS_X11
// start up on the correct display
argv[i++] = "-display";
if ( QX11Info::display() )
argv[i++] = XDisplayString(QX11Info::display());
else
argv[i++] = getenv("DISPLAY");
#elif defined(Q_WS_QWS)
// start up on the correct display
argv[i++] = "-display";
argv[i++] = getenv("QWS_DISPLAY");
#endif
argv[i++] = "--appname";
argv[i++] = s_appName ? s_appName : "<unknown>";
if (KApplication::loadedByKdeinit)
argv[i++] = "--kdeinit";
// only add apppath if it's not NULL
if (s_appPath && *s_appPath) {
argv[i++] = "--apppath";
argv[i++] = s_appPath;
}
// signal number -- will never be NULL
char sigtxt[ 10 ];
sprintf( sigtxt, "%d", sig );
argv[i++] = "--signal";
argv[i++] = sigtxt;
char pidtxt[ 20 ];
sprintf( pidtxt, "%lld", QCoreApplication::applicationPid());
argv[i++] = "--pid";
argv[i++] = pidtxt;
const KComponentData componentData = KGlobal::mainComponent();
const KAboutData *about = componentData.isValid() ? componentData.aboutData() : 0;
if (about) {
if (about->internalVersion()) {
argv[i++] = "--appversion";
argv[i++] = about->internalVersion();
}
if (about->internalProgramName()) {
argv[i++] = "--programname";
argv[i++] = about->internalProgramName();
}
if (about->internalBugAddress()) {
argv[i++] = "--bugaddress";
argv[i++] = about->internalBugAddress();
}
}
char sidtxt[256];
if ( kapp && !kapp->startupId().isNull()) {
argv[i++] = "--startupid";
strlcpy(sidtxt, kapp->startupId().constData(), sizeof(sidtxt));
argv[i++] = sidtxt;
}
if ( s_flags & SaferDialog )
argv[i++] = "--safer";
if ((s_flags & AutoRestart) && s_autoRestartCommand)
argv[i++] = "--restarted"; //tell drkonqi if the app has been restarted
#if defined(Q_OS_WIN)
char threadId[8] = { 0 };
sprintf( threadId, "%d", GetCurrentThreadId() );
argv[i++] = "--thread";
argv[i++] = threadId;
#endif
// NULL terminated list
argv[i] = NULL;
startProcess(i, argv, true);
}
if (crashRecursionCounter < 4)
{
fprintf(stderr, "Unable to start Dr. Konqi\n");
}
_exit(255);
}
