[BUG] startDetachedProcess dies after about 30 seconds

[fucksophie]

Expected behaviour

for startDetachedProcess in the scripting API to run a entierly seperate process

Actual behaviour

startDetachedProcess dies after about 30 seconds

Steps to reproduce

1. Create a startDetachedProcess that, for example, writes to a file every second.
2. Watch it stop writing and hit onDetachedProcessCallback in 29 or 30 seconds.

Exact code uses a python script and QML. https://git.sad.ovh/sophie/QOwnNotesDiscordRPC

Output from the debug section in the settings dialog

Expand

QOwnNotes Debug Information

General Info

Current Date: Sat Aug 3 03:29:54 2024 Version: 24.8.1 Build date: Aug 1 2024 Build number: 1116 Platform: linux (wayland) Operating System: Arch Linux Build architecture: x86_64 Current architecture: x86_64 Release: AUR Qt Version (build): 5.15.14 Qt Version (runtime): 5.15.14 Portable mode: no Settings path / key: /home/yf/.config/PBE/QOwnNotes.conf Application database path: /home/yf/.local/share/PBE/QOwnNotes/QOwnNotes.sqlite Application arguments: QOwnNotes Qt Debug: 0 Locale (system): en_US Locale (interface): en Primary screen resolution: 1920x1080 Screen resolution(s): 1920x1080, 1920x1080 Icon theme: breeze-dark-qownnotes Notes in current note folder: 27 Calendar items: 0 Enabled scripts: 3 Database drivers: QIBASE, QSQLITE, QMARIADB, QMYSQL, QMYSQL3, QODBC, QODBC3, QPSQL, QPSQL7, QTDS, QTDS7

Server Info

serverUrl: empty appIsValid: no notesPathExists: empty connectionErrorMessage: empty

Spellchecking

Enabled: false Selected language: empty Language codes: empty Language names: empty Application dictionaries path: /home/yf/.local/share/PBE/QOwnNotes/dicts

Note folders

currentNoteFolderId: 1

Note folder default

id: 1 isCurrent: yes activeTagId: 0 localPath: /home/yf/EncryptedSync/notes remotePath: Notes cloudConnectionId: 1 isShowSubfolders: yes isUseGit: no allowDifferentNoteFileName: yes activeNoteSubFolder name: Expense tracking database file: /home/yf/EncryptedSync/notes/notes.sqlite

Cloud connections

Cloud connection Noklusējums

id: 1 isCurrent: yes serverUrl: empty username: empty accountId: empty

Enabled scripts

Script AI Text Tool

id: 1 path: /home/yf/.local/share/PBE/QOwnNotes/scripts/ai-text-tool/ai-text-tool.qml variablesJson: empty identifier: ai-text-tool version: 0.1.0 minAppVersion: 24.5.7

Script AI Autocompletion

id: 2 path: /home/yf/.local/share/PBE/QOwnNotes/scripts/ai-autocompletion/ai-autocompletion.qml variablesJson: empty identifier: ai-autocompletion version: 0.0.1 minAppVersion: 24.5.3

Script main

id: 4 path: /home/yf/QOwnNotesDiscordRPC/main.qml variablesJson: empty

Settings

AboutDialog/geometry (QByteArray): <binary data> ActiveNoteHistoryItem (NoteHistoryItem): <binary data> Debug/fakeOldVersionNumber (QString): false Debug/fileLogging (QString): false Editor/CurrentSchemaKey (QString): EditorColorSchema-6033d61b-cb96-46d5-a3a8-20d5172017eb Editor/autoBracketClosing (QString): true Editor/autoBracketRemoval (QString): true Editor/disableCursorBlinking (QString): false Editor/editorWidthInDFMOnly (QString): true Editor/highlightCurrentLine (QString): true Editor/indentSize (QString): 4 Editor/removeTrailingSpaces (QString): false Editor/showLineNumbers (QString): false Editor/useTabIndent (QString): false Editor/vimMode (QString): false FileDialog/LastPath (QString): /home/yf/QOwnNotesDiscordRPC FileDialog/LastPath-ScriptPath (QString): /home/yf/QOwnNotesDiscordRPC ImageDialog/disableCopying (QString): false ImageDialog/geometry (QByteArray): <binary data> LastUpdateCheck (QDateTime): 2024-08-03T03:19:54.981 LocalTrashDialog/geometry (QByteArray): <binary data> MainWindow/geometry (QByteArray): <binary data> MainWindow/mainToolBar.iconSize (QString): 24 MainWindow/menuBarGeometry (QByteArray): <binary data> MainWindow/noteSubFolderTreeWidgetExpandState-1 (QStringList): misc MainWindow/noteTextEdit.code.font (QString): monospace,13,-1,2,50,0,0,0,0,0 MainWindow/noteTextEdit.font (QString): Sans Serif,13,-1,5,50,0,0,0,0,0 MainWindow/noteTextView.code.font (QString): monospace,9,-1,2,50,0,0,0,0,0 MainWindow/noteTextView.font (QString): Sans Serif,9,-1,5,50,0,0,0,0,0 MainWindow/noteTextView.ignoreCodeFontSize (QString): true MainWindow/noteTextView.refreshDebounceTime (QString): 600 MainWindow/noteTextView.rtl (QString): false MainWindow/noteTextView.underline (QString): true MainWindow/noteTextView.useEditorStyles (QString): true MainWindow/noteTextView.useInternalExportStyling (QString): true MainWindow/showNotesFromAllNoteSubFolders (QString): false MessageBoxOverride/remove-notes (QString): 16384 NoteFolder-1/NoteTabNameList (QStringList): Camera (python), syncthing.md, Note 2024-04-15T19.38.29, servermaint.md, August expense tracking, buildsystem.md, fluidsim.md, watch.md, rpi.md NoteFolder-1/NoteTabStickinessList (QString): 0 NoteFolder-1/NoteTabSubFolderPathDataList (QStringList): code, blog, , blog, Expense tracking , blog, blog, blog, blog NoteFolder-1/allowDifferentNoteFileName (bool): true NoteHistory-1 (QVariantList): <variant list with 69 item(s)> NoteHistoryCurrentIndex-1 (QString): 68 PiwikClientId (QString): <hidden> ScriptRepositoryDialog/geometry (QByteArray): <binary data> ScriptRepositoryDialog/mainSplitterState (QByteArray): <binary data> SearchEngineId (QString): 2 SettingsDialog/geometry (QByteArray): <binary data> SettingsDialog/mainSplitterState (QByteArray): <binary data> ShowSystemTray (QString): false StartHidden (QString): false TableDialog/geometry (QByteArray): <binary data> UpdateDialog/geometry (QByteArray): <binary data> WelcomeDialog/geometry (QByteArray): <binary data> acceptAllExternalModifications (QString): false ai/currentBackend (QString): groq ai/enabled (QString): true ai/groq/apiKey (QString): <hidden> ai/groq/currentModel (QString): llama3-70b-8192 ai/ollama/currentModel (QString): mistral:latest ai/openai/apiKey (QString): <hidden> allowNoteEditing (bool): true allowOnlyOneAppInstance (QString): true appMetrics/disableAppHeartbeat (QString): false appMetrics/disableTracking (QString): false appMetrics/notificationShown (QString): true autoReadOnlyMode (QString): false autoReadOnlyModeTimeout (QString): 30 automaticNoteFolderDatabaseClosing (QString): false checkSpelling (bool): false closeTodoListAfterSave (QString): false cryptoKey (QString): <hidden> currentNoteFolderId (QString): 1 currentWorkspace (QString): initial cursorWidth (QString): 1 darkMode (QString): false darkModeColors (QString): true darkModeIconTheme (QString): true darkModeTrayIcon (QString): false defaultNoteFileExtension (QString): md demoNotesCreated (QString): true disableAutomaticUpdateDialog (QString): true disableSavedSearchesAutoCompletion (QString): false dockWasInitializedOnce (QString): true enableNoteTree (QString): false enableSocketServer (QString): true enableWebAppSupport (QString): false externalEditorPath (QString): empty fullyHighlightedBlockquotes (QString): false gitCommitInterval (QString): 30 gitExecutablePath (QString): empty gitLogCommand (QString): empty guiFirstRunInit (bool): true ignoreAllExternalModifications (QString): false ignoreAllExternalNoteFolderChanges (QString): false ignoreNoteSubFolders (QString): ^\. ignoredNoteFiles (QString): empty imageScaleDown (QString): false imageScaleDownMaximumHeight (QString): 1024 imageScaleDownMaximumWidth (QString): 1024 initialLayoutIdentifier (QString): minimal insertTimeFormat (QString): empty interfaceFontSize (QString): 11 interfaceLanguage (QString): en internalIconTheme (QString): false itemHeight (QString): 17 legacyLinking (QString): false localTrash/autoCleanupDays (QString): 30 localTrash/autoCleanupEnabled (QString): true localTrash/supportEnabled (QString): true localTrashSplitterSizes (QByteArray): <binary data> markdownHighlightingEnabled (QString): true navigationPanelAutoSelect (QString): true navigationPanelHideSearch (QString): false networking/ignoreSSLErrors (QString): true networking/proxyType (QString): 2 newNoteAskHeadline (QString): false noteEditIsCentralWidget (QString): true noteFileExtensionList (QStringList): md, txt noteListPreview (QString): false noteSaveIntervalTime (QString): 10 noteSubfoldersPanelDisplayAsFullTree (QString): true noteSubfoldersPanelHideSearch (QString): false noteSubfoldersPanelOrder (QString): 0 noteSubfoldersPanelShowFullPath (QString): false noteSubfoldersPanelShowNotesRecursively (QString): false noteSubfoldersPanelShowRootFolderName (QString): true noteSubfoldersPanelSort (QString): 0 noteSubfoldersPanelTabsUnsetAllNotesSelection (QString): false notesPanelOrder (QString): 0 notesPanelSort (QString): 1 notesPath (QString): /home/yf/EncryptedSync/notes notifyAllExternalModifications (QString): false overrideInterfaceFontSize (QString): false ownCloud/supportEnabled (QString): false ownCloud/todoCalendarBackend (QString): 3 ownCloud/todoCalendarCalDAVPassword (QString): <hidden> ownCloud/todoCalendarCalDAVServerUrl (QString): empty ownCloud/todoCalendarCalDAVUsername (QString): empty ownCloud/todoCalendarCloudConnectionId (QString): 1 ownCloud/todoCalendarDisplayNameList: empty ownCloud/todoCalendarEnabledList: empty ownCloud/todoCalendarEnabledUrlList: empty ownCloud/todoCalendarUrlList: empty ownCloudInfo/appIsValid (bool): false ownCloudInfo/connectionErrorMessage (QString): empty ownCloudInfo/notesPathExistsText (QString): empty ownCloudInfo/serverVersion (QString): empty restoreCursorPosition (QString): true restoreLastNoteAtStartup (QString): true restoreNoteTabs (QString): true savedSearches/noteFolder-1 (QStringList): Note 2024-08-03T03.29.47, Note 2024-08-03T03.29.46, Note 2024-08-02T14.59.49, Note 2024-08-01T23.55.11, Note 2024-07-30T16.19.06, Note 2024-07-24T01.03.18, Note 2024-07-24T00.07.03, a, Note 2024-06-09T12.21.54, Note 2024-04-25T16.07.49, Note 2024-04-19T16.27.47, Note 2024-04-07T15.11.49, Note 2024-04-01T10.16.58, Note 2024-04-01T10.10.19, Note 2024-03-31T22.20.28, Note 2024-03-30T18.21.47, Note 2024-03-30T16.14.33, Note 2024-03-30T16.13.53, Note 2024-03-30T16.13.26, Note 2024-03-30T16.12.04, Note 2024-03-30T16.10.39, Note 2024-03-30T16.10.11, Note 2024-03-30T16.07.59, Note 2024-03-30T16.07.20, Note 2024-03-30T16.06.53, Note 2024-03-30T16.06.31, Note 2024-03-30T16.04.06, Note 2024-03-30T16.04.03, Note 2024-03-30T16.01.53, Note 2024-03-30T16.01.47 showMatches (QString): true showMenuBar (bool): true showStatusBar (bool): true showStatusBarNotePath (QString): true showStatusBarRelativeNotePath (QString): false startInReadOnlyMode (QString): false systemIconTheme (QString): false taggingShowNotesRecursively (QString): false tagsPanelHideNoteCount (QString): false tagsPanelHideSearch (QString): false tagsPanelOrder (QString): 0 tagsPanelSort (QString): 0 todoCalendarSupport (QString): true toolbar/1/items (QStringList): action_New_note, action_Find_note, action_Remove_note, action_Open_note_in_external_editor, actionShow_local_trash, actionAllow_note_editing, , action_Back_in_note_history, action_Forward_in_note_history, , action_Find_text_in_note, actionReplace_in_current_note, , actionShow_versions, actionShow_trash, actionShare_note, , actionShow_Todo_List toolbar/1/name (QString): mainToolBar toolbar/1/title (QString): main toolbar toolbar/2/items (QStringList): actionFormat_text_bold, actionFormat_text_italic, actionStrike_out_text, actionInsert_code_block, actionInsert_block_quote toolbar/2/name (QString): formattingToolbar toolbar/2/title (QString): formatting toolbar toolbar/3/items (QStringList): actionInsert_text_link, actionInsert_image, actionInsert_current_time toolbar/3/name (QString): insertingToolbar toolbar/3/title (QString): inserting toolbar toolbar/4/items (QStringList): action_Encrypt_note, actionEdit_encrypted_note, actionDecrypt_note toolbar/4/name (QString): encryptionToolbar toolbar/4/title (QString): encryption toolbar toolbar/5/items (QStringList): actionEnable_AI, actionAiBackendComboBox, actionAiModelComboBox toolbar/5/name (QString): aiToolbar toolbar/5/title (QString): AI toolbar toolbar/6/items (QStringList): actionWorkspaceComboBox, actionStore_as_new_workspace, actionRemove_current_workspace, actionRename_current_workspace, actionSwitch_to_previous_workspace, actionUnlock_panels, , actionToggle_distraction_free_mode, action_Increase_note_text_size, action_Decrease_note_text_size, action_Reset_note_text_size toolbar/6/name (QString): windowToolbar toolbar/6/title (QString): window toolbar toolbar/7/items (QString): action_Quit toolbar/7/name (QString): quitToolbar toolbar/7/title (QString): quit toolbar toolbar/size (QString): 7 useNoteFolderButtons (QString): false useUNIXNewline (QString): false webAppClientService/serverUrl (QString): wss://app.qownnotes.org webAppClientService/token (QString): <hidden> webSocketServerService/bookmarksNoteName (QString): Bookmarks webSocketServerService/bookmarksTag (QString): bookmarks webSocketServerService/commandSnippetsNoteName (QString): Commands webSocketServerService/commandSnippetsTag (QString): commands webSocketServerService/port (QString): 22222 workspace-initial/name (QString): Minimāls workspace-initial/noteSubFolderDockWidgetVisible (QString): true workspace-initial/windowState (QByteArray): <binary data> workspaces (QString): initial

System environment

SHELL: /bin/nu HYPRLAND_CMD: Hyprland CSF_MDTVTexturesDirectory: /usr/share/opencascade/resources/Textures XDG_CONFIG_DIRS: /etc/xdg XDG_BACKEND: wayland CSF_DrawPluginDefaults: /usr/share/opencascade/resources/DrawResources CSF_LANGUAGE: us CSF_MIGRATION_TYPES: /usr/share/opencascade/resources/StdResource/MigrationSheet.txt XDG_DATA_HOME: /home/yf/.local/share GRADLE_HOME: /usr/share/java/gradle XDG_CONFIG_HOME: /home/yf/.config MEMORY_PRESSURE_WRITE: c29tZSAyMDAwMDAgMjAwMDAwMAA= HL_INITIAL_WORKSPACE_TOKEN: f31eb1d3-fac7-4539-9c9a-bbce3809c27e CSF_OCCTResourcePath: /usr/share/opencascade/resources XCURSOR_SIZE: 24 CSF_STEPDefaults: /usr/share/opencascade/resources/XSTEPResource XDG_SEAT: seat0 PWD: /home/yf LOGNAME: yf XDG_SESSION_TYPE: wayland DRAWHOME: /usr/share/opencascade/resources/DrawResources SYSTEMD_EXEC_PID: 924 _: /usr/bin/rofi CSF_StandardLiteDefaults: /usr/share/opencascade/resources/StdResource MOTD_SHOWN: pam HOME: /home/yf LANG: en_US.UTF-8 _JAVA_AWT_WM_NONREPARENTING: 1 XDG_CURRENT_DESKTOP: Hyprland MEMORY_PRESSURE_WATCH: /sys/fs/cgroup/system.slice/lemurs.service/memory.pressure WAYLAND_DISPLAY: wayland-1 INVOCATION_ID: eb69f6f3832c4a9eabcf545cdf2d11cb CSF_ShadersDirectory: /usr/share/opencascade/resources/Shaders CSF_EXCEPTION_PROMPT: 1 CSF_XmlOcafResource: /usr/share/opencascade/resources/XmlOcafResource XDG_CACHE_HOME: /home/yf/.cache CSF_SHMessage: /usr/share/opencascade/resources/SHMessage XDG_SESSION_CLASS: user TERM: linux USER: yf CSF_StandardDefaults: /usr/share/opencascade/resources/StdResource CSF_IGESDefaults: /usr/share/opencascade/resources/XSTEPResource HYPRLAND_INSTANCE_SIGNATURE: 918d8340afd652b011b937d29d5eea0be08467f5_1722628069_198413616 DISPLAY: :0 CSF_XCAFDefaults: /usr/share/opencascade/resources/StdResource SHLVL: 0 MOZ_ENABLE_WAYLAND: 1 XDG_VTNR: 2 CSF_PluginDefaults: /usr/share/opencascade/resources/StdResource CSF_TObjMessage: /usr/share/opencascade/resources/TObj XDG_SESSION_ID: c1 CASROOT: /usr XDG_STATE_HOME: /home/yf/.local/state XDG_RUNTIME_DIR: /run/user/1000 HAXE_STD_PATH: /usr/share/haxe/std DEBUGINFOD_URLS: https://debuginfod.archlinux.org CSF_XSMessage: /usr/share/opencascade/resources/XSMessage MMGT_CLEAR: 1 XDG_DATA_DIRS: /var/lib/flatpak/exports/share:/home/yf/.local/share/flatpak/exports/share:/usr/share:/usr/local/share PATH: /usr/local/sbin:/usr/local/bin:/usr/bin:/usr/lib/emscripten:/var/lib/flatpak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/opt/rocm/bin:/usr/lib/rustup/bin CSF_TObjDefaults: /usr/share/opencascade/resources/StdResource DBUS_SESSION_BUS_ADDRESS: unix:path=/run/user/1000/bus HG: /usr/bin/hg MAIL: /var/spool/mail/yf DRAWDEFAULT: /usr/share/opencascade/resources/DrawResources/DrawDefault

Relevant log output in the Log panel

Expand

[03:26:13] [scripting] Open! [03:26:14] [scripting] true [03:26:15] [scripting] true [03:26:16] [scripting] true [03:26:17] [scripting] true [03:26:18] [scripting] true [03:26:19] [scripting] true [03:26:20] [scripting] true [03:26:21] [scripting] true [03:26:22] [scripting] true [03:26:23] [scripting] true [03:26:24] [scripting] true [03:26:25] [scripting] true [03:26:26] [scripting] true [03:26:27] [scripting] true [03:26:28] [scripting] true [03:26:29] [scripting] true [03:26:30] [scripting] true [03:26:31] [scripting] true [03:26:32] [scripting] true [03:26:33] [scripting] true [03:26:34] [scripting] true [03:26:35] [scripting] true [03:26:36] [scripting] true [03:26:37] [scripting] true [03:26:38] [scripting] true [03:26:38] [scripting] Error: The remote host closed the connection [03:26:38] [scripting] Socket closed

[pbek]

Seems like https://doc.qt.io/qt-6/qprocess.html#startDetached-1 has a timeout in

https://github.com/pbek/QOwnNotes/blob/e915cfc6b15cb7697127928fa265df5decdd4afd/src/utils/misc.cpp#L343-L370

But it doesn't look that you can get around that easily... But I also don't think it's a good idea to run processes from QOwnNotes in the background indefinitely...

What did you try to do with https://git.sad.ovh/sophie/QOwnNotesDiscordRPC/src/branch/main/main.py?

[fucksophie]

Seems like https://doc.qt.io/qt-6/qprocess.html#startDetached-1 has a timeout in

https://github.com/pbek/QOwnNotes/blob/e915cfc6b15cb7697127928fa265df5decdd4afd/src/utils/misc.cpp#L343-L370

But it doesn't look that you can get around that easily... But I also don't think it's a good idea to run processes from QOwnNotes in the background indefinitely...

What did you try to do with https://git.sad.ovh/sophie/QOwnNotesDiscordRPC/src/branch/main/main.py?

In short, I wanted to add Discord RPC to QOwnNotes. This requres a pretty complicated protocol and from what I know QML does not have a good binary writing and protocol making library (also, because I'm lazy.. who isn't? xD)

I've succeeded in this (however, it's quite buggy, due to this issue). The QML and python scripts manage state through a websocket.

1. QML starts Python
2. Python closes if already open
3. QML connects websocket to python
4. Python sends data
5. If no connection in 5s, python closes script

[pbek]

https://git.sad.ovh/sophie/QOwnNotesDiscordRPC/src/branch/main/main.qml

Nifty, websocket in QML 😉👍️

Hm, things you maybe could do...

• Find out if you can increase the timeout for QProcess, then I could add that feature
• Run your Python script periodically and do polling in your Python script (or do you need bidirectional communication between Discord and your Script?)
• Start your python script as system d service?

[Waqar144]

There is no timeout in QProcess::startDetached, it is mostly likely an issue in the python script you are launching. Try running a program with infinite loop and see if it stops after 30 seconds.

[pbek]

Ah, good insight! I hardly ever use Python. 😁

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.

[fucksophie]

Most likely my Python script.. This just fixed itself after a couple revisions to the python script.

[pbek]

Great 😉