vasilito
cf12defd28
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/*
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This file is part of libkdbus
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SPDX-FileCopyrightText: 2019 Harald Sitter <sitter@kde.org>
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SPDX-License-Identifier: LGPL-2.0-or-later
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*/
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#include <QCoreApplication>
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#include <QDebug>
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#include <QThread>
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#include <kdbusservice.h>
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// sigaction
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#include <signal.h>
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// close
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#include <unistd.h>
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// rlimit
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#include <sys/resource.h>
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#include <sys/time.h>
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// USR1.
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// Close all sockets and eventually ABRT. This mimics behavior during KCrash
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// handling. Closing all sockets will effectively disconnect us from the bus
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// and result in the daemon reclaiming all our service names and allowing
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// other processes to register them instead.
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void usr1_handler(int signum)
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{
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qDebug() << "usr1" << signum << SIGSEGV;
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// Close all remaining file descriptors so we drop off of the bus.
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struct rlimit rlp;
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getrlimit(RLIMIT_NOFILE, &rlp);
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for (int i = 3; i < (int)rlp.rlim_cur; i++) {
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close(i);
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}
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// Sleep a bit for good measure. We could actually loop ad infinitum here
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// as after USR1 we are expected to get killed. In the interest of sane
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// behavior we'll simply exit on our own as well though.
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sleep(4);
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abort();
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}
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// Simple application under test.
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// Closes all sockets on USR1 and aborts to simulate a kcrash shutdown behavior
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// which can result in a service registration race.
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int main(int argc, char *argv[])
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{
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qDebug() << "hello there!";
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struct sigaction action;
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action.sa_handler = usr1_handler;
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sigemptyset(&action.sa_mask);
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sigaddset(&action.sa_mask, SIGUSR1);
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action.sa_flags = SA_RESTART;
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if (sigaction(SIGUSR1, &action, nullptr) < 0) {
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qDebug() << "failed to register segv handler";
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return 1;
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}
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QCoreApplication app(argc, argv);
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QCoreApplication::setApplicationName("kdbussimpleservice");
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QCoreApplication::setOrganizationDomain("kde.org");
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KDBusService service(KDBusService::Unique);
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if (!service.isRegistered()) {
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qDebug() << "service not registered => exiting";
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return 1;
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}
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qDebug() << "service registered";
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int ret = app.exec();
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qDebug() << "exiting deadservice";
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return ret;
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}
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