PHP randomly crashes on filling TreeView

[Nijhuis]

When trying to filling a TreeView with code below, CLI just randomly crashes somtimes, while other times it will execute the code as intended.

 function Treeview_Fill($object, $columns = array(), $data = array(), $failer = false) {
     var_dump($object);
     echo "a";
     $column1 = new GtkTreeViewColumn("Name", new GtkCellRendererText(), "text", 0);
     echo "b";
     $object->append_column($column1);
     echo "c";
     $model = new GtkListStore(GObject::TYPE_STRING);
     echo "d";
     $object->set_model($model);
     echo "e";
 
     return true;
 }

Sometimes the code gets to b, sometimes to c, sometimes to d. There is no logic behind this and no errors to debug.

[scorninpc]

Hey Nijhuis, sorry for delay

Can you provide all code? what are calling Treeview_Fill ?

I imagine the problem is the 0 on GtkTreeViewColumn, always do ZERO will cause a memory problem, but I can only confirm if I can reproduce the problem

What package are you running? appimage? windows?

[Nijhuis]

I am running on Windows 11, using php-gtk3-x86_64-0.16-beta-windows. This code is a port from PHP5.6 and GTK2.
Replacing the 0 in the GtkTreeViewColumn function did not change anything.

The folowing glade file (MainApp.glade) gets loaded:
`

1400 940 False MyApp False True center-always True False vertical True False 950 400 True True never etched-in True True 20 48 1500 1500 True False False False center False -50 -50 True True 2 `

I have a PHP called GladeBase, that is used to build the screens from the gladefile above.
`<?php

class GladeBase {
public function load_glade($file) {
$this->window = new GtkBuilder();
$this->window->add_from_file($file);

    #print_r($this->window);

    $list_of_methods = get_class_methods($this);

    if (DEBUGGLADE) {
        echo print_r($list_of_methods, 1) . "\n\n";
    }

    for ($i = 0; $i < sizeof($list_of_methods); $i++) {

        if (DEBUGGLADE) {
            echo $list_of_methods[$i] . "\n";
        }

        if (strstr($list_of_methods[$i], "on_")) {
            if (preg_match('/on_(.+?)__(.+)$/', $list_of_methods[$i], $values)) {
                $widgetName = $values[1];
                $widget = $this->get_widget($widgetName);
                $signal = $values[2];
                $signal = str_replace('_', '-', $signal);

                if (DEBUGGLADE) {
                    echo $widgetName . " -> " . $signal . " -> " . $list_of_methods[$i] . "\n";
                }
                
                $widget->connect($signal, array($this, $list_of_methods[$i]));
                
            }
            else if (preg_match('/on_(.+?_.+)_(.+)$/', $list_of_methods[$i], $values)) {
                $widgetName = $values[1];
                $widget = $this->get_widget($widgetName);
                $signal = $values[2];

                if (DEBUGGLADE) {
                    echo $widgetName . " -> " . $signal . " -> " . $list_of_methods[$i] . "\n";
                }
                
                $widget->connect($signal, array($this, $list_of_methods[$i]));
                
            }
            else if (preg_match('/on_(.+?)_(.+?)$/', $list_of_methods[$i], $values)) {
                $widgetName = $values[1];
                $widget = $this->get_widget($widgetName);
                $signal = $values[2];

                if (DEBUGGLADE) {
                    echo $widgetName . " -> " . $signal . " -> " . $list_of_methods[$i] . "\n";
                }
                
                $widget->connect($signal, array($this, $list_of_methods[$i]));
            }
        }
    }

    if (DEBUGGLADE) {
        echo "\n\n";
    }

}

public function get_widget($widget) {
    return $this->window->get_object($widget);
}

public function BuildWindow($parent, $gladefile) {
    global $mainapp;

    if (DEBUGGLADE || DEVELOPMENT || OUTPUTLOG) {
        echo "Building windowname: " . $this->windowname . "\n";
        echo "Current memory usage: " . round(memory_get_usage()/1024, 2) . " KiB\n";
    }

    $this->windowShowed = false;

    // De actionTimeout weer op nul zetten
    $mainapp->actionTimeout = 0;

    $this->load_glade($gladefile);

    $this->childwindows = array();
    if (!is_string($parent)) {
        $this->parent = $parent;
        $this->parent->childwindows[$this->windowname] = $this;

        if (DEBUGGLADE || DEVELOPMENT || OUTPUTLOG) {
            echo "Added " . $this->windowname . " to " . $this->parent->windowname . "\n";
            echo "New memory usage: " . round(memory_get_usage()/1024, 2) . " KiB\n";
            echo "\n";
        }
    }
    else {
        if (DEBUGGLADE || DEVELOPMENT || OUTPUTLOG) {
            echo "Opened " . $this->windowname . "\n";
            echo "New memory usage: " . round(memory_get_usage()/1024, 2) . " KiB\n";
            echo "\n";
        }
    }

    $this->get_widget($this->windowname)->add_events(GdkEventMask::POINTER_MOTION_MASK);
    $this->get_widget($this->windowname)->connect("motion_notify-event", array($this, "MouseMove"));
    $this->get_widget($this->windowname)->connect("delete-event", array($this, "DeleteWindow"));
    $this->get_widget($this->windowname)->connect("destroy", array($this, "WindowDestroyed"));

    $this->get_widget($this->windowname)->connect("key-press-event", array($this, "KeyPressed")); 

    return true;
}

public function KeyPressed($widget, $event) {
    global $mainapp;

    // De actionTimeout weer op nul zetten
    $mainapp->LoginTimeoutCounter = 0;

    if (isset($eventArray->type) && $eventArray->type == 3) {
        // Mouse Move
        return true;
    }

    if (isset($eventArray->key->keyval)) {
        if ($eventArray->key->keyval === 65481) {
            // Als we op F12 drukken gaan we uitloggen en het loginscherm tonen
            $mainapp->EmployeeLogin();
        }
    }
    return false;
}

public function MouseMove($widget, $event) {
    $this->KeyPressed($widget, $event);
}

public function ShowWindow($setAsActiveWindow = true) {
    global $mainapp;

    $this->windowShowed = true;

    if (DEVELOPMENT) {
        $title = $this->get_widget($this->windowname)->get_title();

        if (strpos($title, "DEVELOPMENT") === false) {
            $this->get_widget($this->windowname)->set_title("DEVELOPMENT || " . $title . " || DEVELOPMENT");
        }
    }
    
    if (isset($this->parent)) {
        $this->get_widget($this->windowname)->set_transient_for($this->parent->get_widget($this->parent->windowname));
        $this->get_widget($this->windowname)->set_position(GTK::WIN_POS_CENTER_ON_PARENT);

        if (DEVELOPMENT || OUTPUTLOG) {
            echo "Showing " . $this->windowname . " (child from " . $this->parent->windowname . ")\n";
        }
    } else {
        if (DEVELOPMENT || OUTPUTLOG) {
            echo "Showing " . $this->windowname . " (godfather window)\n";
        }
    }

    if ($setAsActiveWindow) {
        $mainapp->activeWindow = $this;
    }

    if (DEVELOPMENT || OUTPUTLOG) {
        echo "Active window: " . $mainapp->activeWindow->windowname . "\n";
        echo "\n";
    }

    $this->get_widget($this->windowname)->show();

    return true;
}

public function AddIdToTitle($id) {
    $id = strval($id);
    if (strlen($id) > 0) {
        $title = $this->get_widget($this->windowname)->get_title();
        $this->get_widget($this->windowname)->set_title($title . " (id: " . $id . ")");
    }
    return true;
}

public function DeleteWindow() {
    // Dit is de functie die het scherm destroyed, mits de functie false returnd
    // We kunnen hiermee dus een alternatief iets uit laten voeren met het rode kruisje
    return false;
}

public function WindowDestroyed() {
    global $mainapp;
    // Dit is de functie die uitgevoerd wordt nadat het window destroyed is
    // de class is hier nog wel beschikbaar
    if (isset($this->parent)) {

        if (DEVELOPMENT || OUTPUTLOG) {
            echo "Removing " . $this->windowname . " from " . $this->parent->windowname . "\n";
            echo "Current memory usage: " . memory_get_usage() . "\n";

        }

        $this->parent->childwindows[$this->windowname] = null;
        unset($this->parent->childwindows[$this->windowname]);

        if ($mainapp->activeWindow->windowname !== $this->parent->windowname) {
            $this->parent->get_widget($this->parent->windowname)->present();
        }

        $mainapp->activeWindow = $this->parent;

        if (DEVELOPMENT || OUTPUTLOG) {
            echo "Active window: " . $mainapp->activeWindow->windowname . "\n";
            echo "New memory usage: " . memory_get_usage() . "\n";
            echo "\n";
        }
    }
}

public function EchoParentNames() {
    if (isset($this->parent)) {
        echo "" . $this->windowname . " = " . $this->get_widget($this->windowname)->get_transient_for()->get_title() . "\n";
        $this->parent->EchoParentNames();
    } else {
        echo "" . $this->windowname . " = no parent found\n";
    }
}

public function __destruct() {
    foreach ($this as $index => &$value) {
        $value = null;
        unset($this->{$index});
    }
    unset($value);
}

public function CloseChildWindows() {
    if (isset($this->childwindows) && is_array($this->childwindows)) {
        foreach ($this->childwindows as $windowName => $window) {
            $window->get_widget($windowName)->destroy();
        }
    }
}

public function FlushGlade() {
    while (Gtk::events_pending()) {
        Gtk::main_iteration();
    }

    return true;
}

}

?>`

Next I have a per-screen class that extends de GladeBase class, this runs the per-screen based code. Currently only working with one screen until I can get it to run stable.
`class MainApp extends GladeBase {

var $window;
var $windowname = "MainApp";

public function __construct() {
    global $datalayer, $mainapp;

    // Deze zetten we zodat we in alle classes het mainwindow kunnen benaderen
    $mainapp = $this;

    $this->BuildWindow("", "include/glade/" . $this->windowname . ".glade");

    $this->ShowWindow();

    $this->get_widget("textview_overlay")->set_visible(0);

    TreeView_Fill($this->get_widget("treeview_Preorders"), [], []);

}

?>
`

Function TreeView_Fill, simplified for testing purposes:
`

append_column($column1); echo "c"; $model = new GtkListStore(GObject::TYPE_STRING); echo "d"; $object->set_model($model); echo "e\n"; return true; ?>

`

Finaly I have a base file that starts the whole program:
`<?php

define("DEVELOPMENT", true);
define("DEBUGGLADE", false);

include("class.GladeBase.php");
include("function.Treeview_Fill.php");
include("class.MainApp.php");

Gtk::init();

$mainapp = new MainApp();

Gtk::main();

?>`

[Nijhuis]

I see that pasting code in the comment section messes things up. If you have a e-mail address I can send the files to you.

[scorninpc]

you can send me all working code / files into scorninpc at google mail

Did you recreate the glade file or are you using the same of Gtk2? Look that Glade does not have full compatibility between versions

[Nijhuis]

Thanks, I will send you the files.

I have rebuild the glade file with Glade User Interface Designer 3.40.

[scorninpc]

Thanks, I will send you the files.

I see, thank you

But i cannot find treeview_Preorders treeview inside MainApp.glade

[Nijhuis]

My bad, had the names mixed up when cleaning up the files. This has to be treeview_Statistieken in class.MainApp.php.

[scorninpc]

is that the problem?

[Nijhuis]

This doesnt look like a PHP error, what is the exact problem here?

[scorninpc]

but this is the error that you are facing?

because look:

<?php

Gtk::init();

$builder = \GtkBuilder::new_from_file("./MainApp.glade");


$builder->get_object("MainApp")->show();

$trv = $builder->get_object("treeview_Statistieken");

$column1 = new GtkTreeViewColumn("Name", new GtkCellRendererText(), "text", 0);
$trv->append_column($column1);

$model = new GtkListStore(GObject::TYPE_STRING);
$trv->set_model($model);

$builder->get_object("MainApp")->show_all();

Gtk::main();

works fine. I think you are refering MainApp class alot times, and this is a GladeBase subclass. You made $mainapp global, and set $this to. And to set actived class you refere $this again, but use $mainapp. My bet is that you are using wrong reference in some point and GtkBuilder are trying to free referenced object

Anyway, your problem are when you set_model, not column related

It's dificulte to parse your code to find the problem, sorry

[Nijhuis]

I dont know if that is the error I am facing, how can I get that debug info? I dont get any error messages, PHP just quits without any error message. It also dont quits every time, it crashes at random starts.

I just get this output and then it quits:
(php.exe:1872): Gtk-WARNING **: 20:22:43.565: Theme parsing error: gtk.css:1600:18: Not using units is deprecated. Assuming 'px'.
(php.exe:1872): Gtk-WARNING **: 20:22:43.569: Theme parsing error: gtk.css:2770:65: 'transparant' is not a valid color name

The code you are running is by far not the same as my code, but even the code below crashes at random starts.

`<?php

Gtk::init();

$builder = \GtkBuilder::new_from_file("./MainApp.glade");

$builder->get_object("MainApp")->show();

$builder->get_object("textview_overlay")->set_visible(0);

$trv = $builder->get_object("treeview_Statistieken");

$column1 = new GtkTreeViewColumn("Name", new GtkCellRendererText(), "text", 0);
$trv->append_column($column1);

$model = new GtkListStore(GObject::TYPE_STRING);
$trv->set_model($model);

Gtk::main();`

Thanks for you help!

[scorninpc]

debug are on by default, the prove is that you are getting warning of themes. Your code not crashing, it's exiting ...

[Nijhuis]

Well the result is the same, it is stopping for an unknown reason at random. Every 4 to 5 starts it is stopping when it is not supposed to.

Any ideas how to debug this?

[scorninpc]

this is random crashing before set model?

Sorry but you cannot debug glade iinternals =/

My best try was rewrite a simplest code and see if this work

[Nijhuis]

Dit some more testing with code below. When it quits/crashes it gets to L21, but neither the widget "textview_overlay" is hidden, nor is widget "treeview_Statistieken" filled. It looks like when it hits Gtk::main() it just quits in stead of keeping the script running.

<?php

echo "L:" . __LINE__ . "\n";
Gtk::init();
echo "L:" . __LINE__ . "\n";
$builder = \GtkBuilder::new_from_file("./include/glade/MainApp.glade");
echo "L:" . __LINE__ . "\n";
$builder->get_object("MainApp")->show();
echo "L:" . __LINE__ . "\n";
$builder->get_object("textview_overlay")->set_visible(0);
echo "L:" . __LINE__ . "\n";
$trv = $builder->get_object("treeview_Statistieken");
echo "L:" . __LINE__ . "\n";
$column1 = new GtkTreeViewColumn("Name", new GtkCellRendererText(), "text", 1);
echo "L:" . __LINE__ . "\n";
$trv->append_column($column1);
echo "L:" . __LINE__ . "\n";
$model = new GtkListStore(GObject::TYPE_STRING);
echo "L:" . __LINE__ . "\n";
$trv->set_model($model);
echo "L:" . __LINE__ . "\n";
Gtk::main();
echo "L:" . __LINE__ . "\n";

Output;

L:3
L:5

(php.exe:11936): Gtk-WARNING **: 15:31:32.009: Theme parsing error: gtk.css:1600:18: Not using units is deprecated. Assuming 'px'.

(php.exe:11936): Gtk-WARNING **: 15:31:32.009: Theme parsing error: gtk.css:2770:65: 'transparant' is not a valid color name
L:7
L:9
L:11
L:13
L:15
L:17
L:19
L:21