[WIN32][UI-Freeze] Calls to methods in OS class became really slow (since update to 2024-03?)

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[WIN32][UI-Freeze] Calls to methods in OS class became really slow (since update to 2024-03?) #40

Open fedejeanne opened 5 months ago

fedejeanne commented 5 months ago

Ever since the last update to Eclipse 2024-03, colleagues have been reporting UI-freezes. Some of them can be pinned to calls to native methods in the org.eclipse.swt.internal.win32.OS class, for example:

org.eclipse.swt.internal.win32.OS.SendMessage[native] ()
org.eclipse.swt.internal.win32.OS.SetWindowPos[native] ()
org.eclipse.swt.internal.win32.OS.CallWindowProc[native] ()

Some screenshots

I can't paste the snapshots here because they contain some internal data

HeikoKlare commented 5 months ago

Just a hint: these OS calls often invoke callbacks, in which the actual code being responsible for the freeze may be placed.

fedejeanne commented 5 months ago

It seems like the problem was the virus scanner. I already sent an email to the colleagues so they can test a solution.

This ticket can remain open for a while and, if no one reports anything about UI-Freezes after the next MM update then it can be closed.

HeikoKlare commented 4 months ago