93 lines
2.1 KiB
C#
93 lines
2.1 KiB
C#
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using System;
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using System.Threading;
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using Gdk;
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using Gtk;
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namespace Samples
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{
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[Section (ContentType = typeof(PixbufDemo), Category = Category.Miscellaneous)]
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class PixbufSection : ListSection
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{
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public PixbufSection ()
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{
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AddItem ($"Press button to run / stop {nameof(PixbufDemo)} :", new PixbufDemo ("Press me"));
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}
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}
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class PixbufDemo : Button
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{
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public PixbufDemo (string text) : base (text) { }
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private bool running = false;
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public void DispatchPendingEvents ()
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{
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// The loop is limited to 1000 iterations as a workaround for an issue that some users
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// have experienced. Sometimes EventsPending starts return 'true' for all iterations,
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// causing the loop to never end.
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int n = 1000;
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Gdk.Threads.Enter ();
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while (Gtk.Application.EventsPending () && --n > 0) {
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Gtk.Application.RunIteration (false);
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}
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Gdk.Threads.Leave ();
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}
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protected override void OnPressed ()
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{
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base.OnPressed ();
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var count = 0;
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if (running) {
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running = false;
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return;
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}
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var startmem = GC.GetTotalMemory (true);
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var testfile = "Textpic.png";
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using (var writeTestFile = new Pixbuf (typeof(ImageSection).Assembly, "Testpic")) {
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writeTestFile.Save (testfile, "png");
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}
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using (var heatup = new Pixbuf (testfile)) {
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ApplicationOutput.WriteLine ($"{nameof(heatup)}.{nameof(Pixbuf.ByteLength)}\t{heatup.ByteLength:N0}");
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}
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startmem = GC.GetTotalMemory (true);
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ApplicationOutput.WriteLine ($"{nameof(GC.GetTotalMemory)} at start: {startmem:N}");
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running = true;
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var memAllocated = 0UL;
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while (running) {
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using (var source = new Pixbuf (typeof(ImageSection).Assembly, "Testpic")) {
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memAllocated += source.ByteLength;
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count++;
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}
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DispatchPendingEvents ();
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if (!running)
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break;
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}
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var endmem = GC.GetTotalMemory (true);
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ApplicationOutput.WriteLine ($"Leak:\t{(endmem - startmem):N0}\t{nameof(memAllocated)}");
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ApplicationOutput.WriteLine ($"{nameof(GC.GetTotalMemory)} at start: {startmem:N0}\tat end: {endmem:N0}\t{nameof(Pixbuf)} created: {count}");
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}
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}
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}
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