calvin.erfmann/librepods
1
0
Fork 0
mirror of https://github.com/kavishdevar/librepods.git synced 2026-01-28 22:01:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

linux: fix single-instance logic (#314)

Browse Source 
Replaced the previous QSharedMemory-based single-instance logic with a
clean QLocalServer approach. The old method left stale shared memory and
socket files after crashes, causing false "already running" states and
occasional segmentation faults.
This commit is contained in:
Ozan Durgut
2025-11-24 05:19:10 +01:00
committed by GitHub
parent 826e395379
commit fa30d3c09a
1 changed files with 27 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
linux/main.cpp
View File

@@ -987,30 +987,24 @@ private:
int main(int argc, char *argv[]) {
QApplication app(argc, argv);
QSharedMemory sharedMemory;
sharedMemory.setKey("TcpServer-Key2");
QLocalServer::removeServer("app_server");
// Check if app is already open
if(sharedMemory.create(1) == false)
{
LOG_INFO("Another instance already running! Opening App Window Instead");
QLocalSocket socket;
// Connect to the original app, then trigger the reopen signal
socket.connectToServer("app_server");
if (socket.waitForConnected(500)) {
socket.write("reopen");
socket.flush();
socket.waitForBytesWritten(500);
socket.disconnectFromServer();
app.exit(); // exit; process already running
return 0;
}
else
{
// Failed connection, log and open the app (assume it's not running)
LOG_ERROR("Failed to connect to the original app instance. Assuming it is not running.");
LOG_DEBUG("Socket error: " << socket.errorString());
}
QFile stale("/tmp/app_server");
if (stale.exists())
stale.remove();
QLocalSocket socket_check;
socket_check.connectToServer("app_server");
if (socket_check.waitForConnected(300)) {
LOG_INFO("Another instance already running! Reopening window...");
socket_check.write("reopen");
socket_check.flush();
socket_check.waitForBytesWritten(200);
socket_check.disconnectFromServer();
return 0;
}
app.setDesktopFileName("me.kavishdevar.librepods");
app.setQuitOnLastWindowClosed(false);
@@ -1092,8 +1086,16 @@ int main(int argc, char *argv[]) {
});
QObject::connect(&app, &QCoreApplication::aboutToQuit, [&]() {
LOG_DEBUG("Application is about to quit. Cleaning up...");
sharedMemory.detach();
LOG_DEBUG("Application quitting. Cleaning up local server...");
if (server.isListening()) {
server.close();
}
QLocalServer::removeServer("app_server");
QFile stale("/tmp/app_server");
if (stale.exists())
stale.remove();
});
return app.exec();
}