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jwharm / java-gi

GObject-Introspection bindings generator for Java
GNU Lesser General Public License v2.1
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Async callbacks throw error #103

Closed pontaoski closed 5 months ago

pontaoski commented 5 months ago 
[error] java.lang.NullPointerException: Cannot invoke "java.lang.ref.WeakReference.get()" because "proxy" is null
[error]         at io.github.jwharm.javagi.gobject.InstanceCache.handleToggleNotify(InstanceCache.java:331)
[error]         at org.gnome.gio.FileEnumerator.nextFilesAsync(FileEnumerator.java:525)
[error]         at Shades.GIOFS2$.list$$anonfun$3$$anonfun$1$$anonfun$1$$anonfun$1(GIOFS2.scala:323)
                    MethodHandles.g_input_stream_read_async.invokeExact(handle(), 
                            (MemorySegment) (buffer == null ? MemorySegment.NULL : _bufferPointer), 
                            count, ioPriority, 
                            (MemorySegment) (cancellable == null ? MemorySegment.NULL : cancellable.handle()), 
                            (MemorySegment) (callback == null ? MemorySegment.NULL : callback.toCallback(_callbackScope)), 
                            MemorySegment.NULL);
enumerator.nextFilesAsync(1, GLib.GLib.PRIORITY_DEFAULT, cancellable, (obj, res, data) =>
    try
        val it = enumerator.nextFilesFinish(res)
        if it.isEmpty() then
            callback(Right(None))
        else
            println(it.iterator)
            println(it.iterator.next)
            callback(Right(Some(it.iterator.next, ())))
    catch case e => callback(Left(e))
) // <- stack trace here
[error] java.lang.NullPointerException: Cannot invoke "java.lang.ref.WeakReference.get()" because "proxy" is null
[error]         at io.github.jwharm.javagi.gobject.InstanceCache.handleToggleNotify(InstanceCache.java:331)
[error]         at org.gnome.gio.InputStream.readAsync(InputStream.java:530)
[error]         at Shades.ReadFileHandle.read$$anonfun$1$$anonfun$2$$anonfun$1(GIOFS2.scala:153)
                    MethodHandles.g_input_stream_read_async.invokeExact(handle(), 
                            (MemorySegment) (buffer == null ? MemorySegment.NULL : _bufferPointer), 
                            count, ioPriority, 
                            (MemorySegment) (cancellable == null ? MemorySegment.NULL : cancellable.handle()), 
                            (MemorySegment) (callback == null ? MemorySegment.NULL : callback.toCallback(_callbackScope)), 
                            MemorySegment.NULL);
stream.readAsync(
    buffer,
    GLib.GLib.PRIORITY_DEFAULT,
    cancellable,
    (obj, res, data) => {
        try
            val nbytes = stream.readFinish(res)
            callback(
                Right(
                    Some(
                        Chunk.array(
                            Arrays.copyOfRange(
                                buffer.get(),
                                0,
                                nbytes.toInt,
                            )
                        )
                    )
                )
            )
        catch case e =>
            callback(Left(e))
    }, // <-- stack trace here
)

i think it has something to do with garbage collection because it's indeterminate which of these two throw and both involve callbacks passed into GObject land

jwharm commented 5 months ago

Probably caused by a missing ref() somewhere.

Can you run with environment variable "G_MESSAGES_DEBUG=all" and copy the output here?

pontaoski commented 5 months ago 
[error] WARNING: A restricted method in java.lang.foreign.SymbolLookup has been called
[error] WARNING: java.lang.foreign.SymbolLookup::libraryLookup has been called by io.github.jwharm.javagi.interop.Interop in an unnamed module
[error] WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
[error] WARNING: Restricted methods will be blocked in a future release unless native access is enabled
[info] (process:364022): GLib-DEBUG: 22:21:32.099: unsetenv() is not thread-safe and should not be used after threads are created
[info] (process:364022): GLib-DEBUG: 22:21:32.099: unsetenv() is not thread-safe and should not be used after threads are created
[info] (process:364022): GLib-DEBUG: 22:21:32.099: unsetenv() is not thread-safe and should not be used after threads are created
[info] (process:364022): java-gi-DEBUG: 22:21:33.150: New org.gnome.gtk.Application 140115938043968
[info] (process:364022): java-gi-DEBUG: 22:21:33.156: Toggle 140115938043968 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:33.180: Toggle 140115938043968 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:33.180: Toggle 140115938043968 to weak reference (is last ref)
[info] (java:364022): GLib-GIO-DEBUG: 22:21:33.181: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
[info] (java:364022): java-gi-DEBUG: 22:21:33.184: Toggle 140115938043968 to strong reference
[info] (java:364022): GLib-GIO-DEBUG: 22:21:33.219: _g_io_module_get_default: Found default implementation dconf (DConfSettingsBackend) for ‘gsettings-backend’
[info] (java:364022): dconf-DEBUG: 22:21:33.219: watch_fast: "/org/gnome/desktop/interface/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/desktop/peripherals/mouse/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/desktop/sound/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/desktop/privacy/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/desktop/wm/preferences/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/settings-daemon/plugins/xsettings/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/desktop/a11y/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:33.220: watch_fast: "/org/gnome/desktop/a11y/interface/" (establishing: 0, active: 0)
[info] (java:364022): GLib-GIO-DEBUG: 22:21:33.220: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
[info] (java:364022): dconf-DEBUG: 22:21:33.222: watch_established: "/org/gnome/desktop/interface/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/desktop/peripherals/mouse/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/desktop/sound/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/desktop/privacy/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/desktop/wm/preferences/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/settings-daemon/plugins/xsettings/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/desktop/a11y/" (establishing: 1)
[info] (java:364022): dconf-DEBUG: 22:21:33.228: watch_established: "/org/gnome/desktop/a11y/interface/" (establishing: 1)
[info] (java:364022): Gtk-DEBUG: 22:21:33.269: Connecting to session manager
[error] (java:364022): Gtk-WARNING **: 22:21:33.273: Unknown key gtk-modules in /home/jblackquill/.config/gtk-4.0/settings.ini
[info] (java:364022): Gtk-DEBUG: 22:21:33.269: Failed to get the GNOME session proxy: The name org.gnome.SessionManager is not owned
[info] (java:364022): Gtk-DEBUG: 22:21:33.270: Failed to get the Xfce session proxy: The name org.xfce.SessionManager is not owned
[info] (java:364022): GLib-GIO-DEBUG: 22:21:33.282: _g_io_module_get_default: Found default implementation gvfs (GDaemonVfs) for ‘gio-vfs’
[info] (java:364022): java-gi-DEBUG: 22:21:33.524: New org.gnome.gtk.Settings 140115940939968
[info] (java:364022): java-gi-DEBUG: 22:21:33.524: Ref org.gnome.gtk.Settings 140115940939968
[info] (java:364022): java-gi-DEBUG: 22:21:33.632: Ref org.gnome.gtk.Settings 140115940939968
[info] (java:364022): java-gi-DEBUG: 22:21:33.667: New org.gnome.gtk.ApplicationWindow 140115942486224
[info] (java:364022): java-gi-DEBUG: 22:21:33.668: Ref org.gnome.gobject.GObject 140115942486224
[info] (java:364022): java-gi-DEBUG: 22:21:33.675: New org.gnome.gtk.HeaderBar 140115941491504
[info] (java:364022): java-gi-DEBUG: 22:21:33.675: Ref org.gnome.gobject.GObject 140115941491504
[info] (java:364022): java-gi-DEBUG: 22:21:33.692: New org.gnome.gtk.Box 140115941070816
[info] (java:364022): java-gi-DEBUG: 22:21:33.692: Ref org.gnome.gobject.GObject 140115941070816
[info] (java:364022): java-gi-DEBUG: 22:21:33.692: Ref org.gnome.gobject.GObject 140115941070816
[info] (java:364022): java-gi-DEBUG: 22:21:33.701: New org.gnome.gtk.Button 140115942824048
[info] (java:364022): java-gi-DEBUG: 22:21:33.701: Ref org.gnome.gobject.GObject 140115942824048
[info] (java:364022): java-gi-DEBUG: 22:21:33.702: Ref org.gnome.gtk.Button 140115942824048
[info] (java:364022): java-gi-DEBUG: 22:21:33.706: New org.gnome.gtk.Button 140115942771216
[info] (java:364022): java-gi-DEBUG: 22:21:33.706: Ref org.gnome.gobject.GObject 140115942771216
[info] (java:364022): java-gi-DEBUG: 22:21:33.707: Ref org.gnome.gtk.Button 140115942771216
[info] (java:364022): java-gi-DEBUG: 22:21:33.713: New org.gnome.gtk.Button 140115942701376
[info] (java:364022): java-gi-DEBUG: 22:21:33.713: Ref org.gnome.gobject.GObject 140115942701376
[info] (java:364022): java-gi-DEBUG: 22:21:33.714: Ref org.gnome.gtk.Button 140115942701376
[error] يونيو 03, 2024 10:21:35 م dev.ludovic.netlib.blas.InstanceBuilder initializeNative
[info] trying to return java 16 instance
[error] WARNING: Failed to load implementation from:dev.ludovic.netlib.blas.JNIBLAS
[error] يونيو 03, 2024 10:21:35 م dev.ludovic.netlib.blas.InstanceBuilder initializeJava
[error] WARNING: Failed to load implementation from:dev.ludovic.netlib.blas.VectorBLAS
[info] return java 11 instance
[info] (java:364022): java-gi-DEBUG: 22:21:35.351: New Shades.LayerWidget 140115955324128
[info] (java:364022): java-gi-DEBUG: 22:21:35.352: Ref org.gnome.gobject.GObject 140115955324128
[info] (java:364022): java-gi-DEBUG: 22:21:35.355: New org.gnome.gtk.EventControllerScroll 140115955337952
[info] (java:364022): java-gi-DEBUG: 22:21:35.356: Toggle 140115955337952 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:35.391: Toggle 140115955337952 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:35.394: New org.gnome.gtk.GestureZoom 140115955510480
[info] (java:364022): java-gi-DEBUG: 22:21:35.394: Toggle 140115955510480 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:35.403: Toggle 140115955510480 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:35.404: New org.gnome.gtk.EventControllerMotion 140115955531648
[info] (java:364022): java-gi-DEBUG: 22:21:35.405: Toggle 140115955531648 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:35.405: Toggle 140115955531648 to strong reference
[info] (java:364022): Gtk-DEBUG: 22:21:35.498: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:35.498: snapshot symbolic icon using mask
[info] (java:364022): java-gi-DEBUG: 22:21:37.267: New org.gnome.gtk.FileDialog 140115958425792
[info] (java:364022): java-gi-DEBUG: 22:21:37.268: Toggle 140115958425792 to weak reference (is last ref)
[info] (java:364022): dconf-DEBUG: 22:21:37.314: watch_fast: "/org/gtk/gtk4/settings/file-chooser/" (establishing: 0, active: 0)
[info] (java:364022): dconf-DEBUG: 22:21:37.315: watch_established: "/org/gtk/gtk4/settings/file-chooser/" (establishing: 1)
[info] (java:364022): java-gi-DEBUG: 22:21:37.315: Toggle 140115958425792 to strong reference
[info] (java:364022): Gtk-DEBUG: 22:21:37.315: Got version 3 for portal interface 'org.freedesktop.portal.FileChooser'
[info] (java:364022): Gtk-DEBUG: 22:21:37.564: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.564: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.579: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.580: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.595: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.596: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.615: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.615: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.628: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.628: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.643: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.643: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.658: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.658: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.680: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.680: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.692: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.692: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.709: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.710: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.736: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.736: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.758: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:37.758: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:43.947: snapshot symbolic icon using mask
[info] (java:364022): Gtk-DEBUG: 22:21:43.947: snapshot symbolic icon using mask
[info] (java:364022): java-gi-DEBUG: 22:21:43.960: New org.gnome.gio.File$FileImpl 140115936330752
[info] (java:364022): java-gi-DEBUG: 22:21:44.028: New org.gnome.gio.File$FileImpl 140115936540736
[info] (java:364022): java-gi-DEBUG: 22:21:44.028: Toggle 140115936540736 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.041: New org.gnome.gio.Cancellable 140115456299904
[info] (java:364022): java-gi-DEBUG: 22:21:44.042: Toggle 140115456299904 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.052: Toggle 140115936540736 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.052: Toggle 140115958425792 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.052: Toggle 140115456299904 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.065: Toggle 140115936330752 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.068: New org.gnome.gio.FileEnumerator 140114584251328
[info] (java:364022): java-gi-DEBUG: 22:21:44.070: Toggle 140114584251328 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.070: Toggle 140115456299904 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.163: Unref 140115456299904
[info] (java:364022): java-gi-DEBUG: 22:21:44.289: New org.gnome.gio.Cancellable 140115458444272
[info] (java:364022): java-gi-DEBUG: 22:21:44.289: Toggle 140115458444272 to weak reference (is last ref)
[info] org.gnome.gio.FileEnumerator@8b4c4d3
[info] (java:364022): java-gi-DEBUG: 22:21:44.296: Toggle 140114584251328 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.296: Toggle 140115458444272 to strong reference
[info] org.gnome.glib.List$1@57070dea
[info] org.gnome.gio.FileInfo@d261e83
[info] (java:364022): java-gi-DEBUG: 22:21:44.303: Toggle 140114584251328 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.304: Toggle 140115458444272 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.316: New org.gnome.gio.File$FileImpl 140115993200144
[info] (java:364022): java-gi-DEBUG: 22:21:44.316: Toggle 140115993200144 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.318: New org.gnome.gio.File$FileImpl 140115993207808
[info] (java:364022): java-gi-DEBUG: 22:21:44.318: Toggle 140115993207808 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.323: New org.gnome.gio.Cancellable 140115993233824
[info] (java:364022): java-gi-DEBUG: 22:21:44.323: Toggle 140115993233824 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.326: Toggle 140115993207808 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.326: Toggle 140115993233824 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.329: New org.gnome.gio.FileInputStream 140114584243168
[info] (java:364022): java-gi-DEBUG: 22:21:44.329: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.330: Toggle 140115993207808 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.330: Toggle 140115993233824 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.352: New org.gnome.gio.Cancellable 140116194590544
[info] (java:364022): java-gi-DEBUG: 22:21:44.352: Toggle 140116194590544 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.383: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.384: Toggle 140116194590544 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 512
[info] (java:364022): java-gi-DEBUG: 22:21:44.397: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.399: Toggle 140116194590544 to weak reference (is last ref)
[info] {
[info] glyphname = "a-sp";
[info] layers = (
[info] {
[info] background = {
[info] shapes = (
[info] {
[info] closed = 1;
[info] nodes = (
[info] (906,1490,l),
[info] (906,816,l),
[info] (1096,816,l),
[info] (1096,1490,l)
[info] );
[info] },
[info] {
[info] closed = 1;
[info] nodes = (
[info] (1076,-8,o),
[info] (1141,52,o),
[info] (1168,111,c),
[info] (1177,111,l),
[info] (1178,0,l),
[info] (1348,0,l),
[info] (1347,619,l),
[info] (1175,619,l),
[info] (1176,499,l),
[info] (1169,499,l),
[info] (1143,562,o),
[info] (1077,625,o),
[info] (949,625,cs),
[info] (792,625,o),
[info] (654,530,o),
[info] (653,309,cs),
[info] (653,100,o),
[info] (782,-8,o),
[info] (949,-8,cs)
[info] );
[info] },
[info] {
[info] closed = 1;
[info] nodes = (
[info] (890,124,o),
[info] (829,202,o),
[info] (830,311,cs),
[info] (831,414,o),
[info] (888,4
[info] (java:364022): java-gi-DEBUG: 22:21:44.446: New org.gnome.gio.Cancellable 140115458558880
[info] (java:364022): java-gi-DEBUG: 22:21:44.446: Toggle 140115458558880 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.449: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.450: Toggle 140115458558880 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 512
[info] (java:364022): java-gi-DEBUG: 22:21:44.455: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.455: Toggle 140115458558880 to weak reference (is last ref)
[info] 
[info] (java:364022): java-gi-DEBUG: 22:21:44.457: New org.gnome.gio.Cancellable 140113644360064
[info] (java:364022): java-gi-DEBUG: 22:21:44.457: Toggle 140113644360064 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.458: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.459: Toggle 140113644360064 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 512
[info] norAxisWidth = 15;
[info] };
[info] "Letterink-NibStyleId" = 1;
[info] })
[info] );
[info] },
[info] {
[info] closed = 1;
[info] nodes = (
[info] (1045,688,o),
[info] (805,490,cs,{
[info] "Letterink-NibData" = {
[info] MainAxisWidth = 110;
[info] MinorAxisWidth = 105;
[info] ValidForParentMainAxisWidth = 30;
[info] ValidForParentMinorAxisWidth = 15;
[info] };
[info] "Letterink-NibStyleId" = 1;
[info] }),
[info] (534,268,o),
[info] (855,-116,o),
[info] (1105,130,cs,{
[info] "Letterink-NibData" = {
[info] MainAxisWidth = 110;
[info] MinorAxisWidth = 105;
[info] ValidForParentMainAxisWidth = 30;
[info] ValidForParentMinorAxisWidth = 15;
[info] };
[info] "Letterink-NibStyleId" = 1;
[info] }),
[info] (1327,348,o)
[info] );
[info] }
[info] (java:364022): java-gi-DEBUG: 22:21:44.463: New org.gnome.gio.Cancellable 140113778583520
[info] (java:364022): java-gi-DEBUG: 22:21:44.463: Toggle 140113778583520 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.464: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.465: Toggle 140113644360064 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.465: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.465: Toggle 140113778583520 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 467
[info] (java:364022): java-gi-DEBUG: 22:21:44.468: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.468: Toggle 140113778583520 to weak reference (is last ref)
[info] ,
[info] {
[info] closed = 0;
[info] nodes = (
[info] (1259,583,l,{
[info] "Letterink-NibData" = {
[info] MainAxisWidth = 110;
[info] MinorAxisWidth = 105;
[info] ValidForParentMainAxisWidth = 30;
[info] ValidForParentMinorAxisWidth = 15;
[info] };
[info] "Letterink-NibStyleId" = 1;
[info] }),
[info] (1196,496,o),
[info] (1214,42,o),
[info] (1242,6,c,{
[info] "Letterink-NibData" = {
[info] MainAxisWidth = 110;
[info] MinorAxisWidth = 105;
[info] ValidForParentMainAxisWidth = 30;
[info] ValidForParentMinorAxisWidth = 15;
[info] };
[info] "Letterink-NibStyleId" = 1;
[info] })
[info] );
[info] }
[info] );
[info] width = 2000;
[info] }
[info] );
[info] unicode = 989440;
[info] }
[info] (java:364022): java-gi-DEBUG: 22:21:44.469: New org.gnome.gio.Cancellable 140116127745456
[info] (java:364022): java-gi-DEBUG: 22:21:44.470: Toggle 140116127745456 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.471: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.472: Toggle 140116127745456 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.474: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.474: Toggle 140116127745456 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.475: New org.gnome.gio.Cancellable 140116261659472
[info] (java:364022): java-gi-DEBUG: 22:21:44.476: Toggle 140116261659472 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.477: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.477: Toggle 140116261659472 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.480: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.481: New org.gnome.gio.Cancellable 140116396298528
[info] (java:364022): java-gi-DEBUG: 22:21:44.481: Toggle 140116261659472 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.481: Toggle 140116396298528 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.482: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.483: Toggle 140116396298528 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.486: New org.gnome.gio.Cancellable 140115791854176
[info] (java:364022): java-gi-DEBUG: 22:21:44.486: Toggle 140115791854176 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.487: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.487: Toggle 140116396298528 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.488: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.488: Toggle 140115791854176 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.492: New org.gnome.gio.Cancellable 140116194738608
[info] (java:364022): java-gi-DEBUG: 22:21:44.492: Toggle 140116194738608 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.493: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.493: Toggle 140115791854176 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.494: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.494: Toggle 140116194738608 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.500: New org.gnome.gio.Cancellable 140115458557312
[info] (java:364022): java-gi-DEBUG: 22:21:44.500: Toggle 140115458557312 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.501: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.501: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.502: Toggle 140115458557312 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.502: Toggle 140116194738608 to weak reference (is last ref)
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.506: New org.gnome.gio.Cancellable 140116127747680
[info] (java:364022): java-gi-DEBUG: 22:21:44.507: Toggle 140116127747680 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.511: Toggle 140116127747680 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.512: Toggle 140115458557312 to weak reference (is last ref)
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.519: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.519: Toggle 140116127747680 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.520: New org.gnome.gio.Cancellable 140116194739136
[info] (java:364022): java-gi-DEBUG: 22:21:44.520: Toggle 140116194739136 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.522: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.522: Toggle 140116194739136 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.525: New org.gnome.gio.Cancellable 140116395825904
[info] (java:364022): java-gi-DEBUG: 22:21:44.525: Toggle 140116395825904 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.527: Toggle 140116395825904 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.528: Toggle 140116194739136 to weak reference (is last ref)
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.530: New org.gnome.gio.Cancellable 140116127748944
[info] (java:364022): java-gi-DEBUG: 22:21:44.531: Toggle 140116127748944 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.532: Toggle 140116127748944 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.533: Toggle 140116395825904 to weak reference (is last ref)
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.535: New org.gnome.gio.Cancellable 140116194739440
[info] (java:364022): java-gi-DEBUG: 22:21:44.536: Toggle 140116194739440 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.538: Toggle 140116194739440 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.539: Toggle 140116127748944 to weak reference (is last ref)
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[error] java.lang.NullPointerException: Cannot invoke "java.lang.ref.WeakReference.get()" because "proxy" is null
[error]         at io.github.jwharm.javagi.gobject.InstanceCache.handleToggleNotify(InstanceCache.java:331)
[error]         at org.gnome.gio.InputStream.readAsync(InputStream.java:530)
[info] (java:364022): java-gi-DEBUG: 22:21:44.541: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.542: Toggle 140116194739440 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.542: New org.gnome.gio.Cancellable 140115791854096
[info] (java:364022): java-gi-DEBUG: 22:21:44.542: Toggle 140115791854096 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.545: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.546: Toggle 140115791854096 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.549: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.549: Toggle 140115791854096 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.550: New org.gnome.gio.Cancellable 140116261659840
[info] (java:364022): java-gi-DEBUG: 22:21:44.550: Toggle 140116261659840 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.551: Toggle 140114584243168 to strong reference
[error]         at Shades.ReadFileHandle.read$$anonfun$1$$anonfun$2$$anonfun$1(GIOFS2.scala:157)
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[info] (java:364022): java-gi-DEBUG: 22:21:44.552: Toggle 140116261659840 to strong reference
[error]         at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error]         at cats.effect.IO$$anon$5.apply$$anonfun$3$$anonfun$1$$anonfun$1(IO.scala:1317)
[error]         at cats.effect.IO$$anon$5.apply$$anonfun$3$$anonfun$1$$anonfun$adapted$1(IO.scala:1317)
[error]         at cats.effect.IOFiber.runLoop(IOFiber.scala:396)
[error]         at cats.effect.IOFiber.execR(IOFiber.scala:1364)
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[error]         at cats.effect.IOFiber.run(IOFiber.scala:112)
[info] (java:364022): java-gi-DEBUG: 22:21:44.554: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.554: Toggle 140116261659840 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.555: New org.gnome.gio.Cancellable 140116060294176
[info] (java:364022): java-gi-DEBUG: 22:21:44.555: Toggle 140116060294176 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.556: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.557: Toggle 140116060294176 to strong reference
[error]         at cats.effect.unsafe.WorkerThread.run(WorkerThread.scala:743)
[error] Unrecoverable uncaught exception encountered. The VM will now exit
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.559: New org.gnome.gio.Cancellable 140116194739760
[info] (java:364022): java-gi-DEBUG: 22:21:44.560: Toggle 140116194739760 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.561: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.561: Toggle 140116060294176 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.562: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.562: Toggle 140116194739760 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.565: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.565: Toggle 140116194739760 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.565: New org.gnome.gio.Cancellable 140116395829488
[info] (java:364022): java-gi-DEBUG: 22:21:44.566: Toggle 140116395829488 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.568: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.568: Toggle 140116395829488 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.572: New org.gnome.gio.Cancellable 140116194741104
[info] (java:364022): java-gi-DEBUG: 22:21:44.573: Toggle 140116194741104 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.573: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.574: Toggle 140116395829488 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.574: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.575: Toggle 140116194741104 to strong reference
[info] org.gnome.gio.FileInputStream@8b8a0f3
[info] 0
[info] (java:364022): java-gi-DEBUG: 22:21:44.584: New org.gnome.gio.Cancellable 140115993241088
[info] (java:364022): java-gi-DEBUG: 22:21:44.584: Toggle 140115993241088 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.586: Toggle 140114584243168 to strong reference
[info] (java:364022): java-gi-DEBUG: 22:21:44.587: Toggle 140114584243168 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:44.587: Toggle 140116194741104 to weak reference (is last ref)
[info] (java:364022): java-gi-DEBUG: 22:21:51.445: Toggle 140115938043968 to weak reference (is last ref)
[info] (java:364022): dconf-DEBUG: 22:21:51.445: sync
[error] tcache_thread_shutdown(): unaligned tcache chunk detected

some of the output is intermixed with my application prints

jwharm commented 5 months ago

The FileInputStream at address 140114584243168 emits a ToggleNotify with is_last_ref=false twice in a row. As result java-gi attempst to change the weak ref into a strong ref twice. This explains the NPE for the weak reference.

I think my assumption was incorrect, and this can happen in an async context when multiple threads access the same object concurrently. I will change the ToggleNotify event handler to handle this more gracefully.

jwharm commented 5 months ago

I changed the toggle reference functionality to handle the situation described above. I also found another bug related to refcounting: for all objects with floating references (i.e. all Gtk widgets) an extra call to g_object_ref was done when java-gi added them to the InstanceCache. This is a memory leak, so I fixed this as well.

I published a 0.10.2-SNAPSHOT release with both these fixes. Can you please retest?

For snapshot dependencies, add https://s01.oss.sonatype.org/content/repositories/snapshots to the repositories in your build script.

pontaoski commented 5 months ago

Looks like it fixed the issue for me

jwharm commented 5 months ago

Fixed with commit ae67610