When receiving emails a MUI error/warning window pops up saying "MUI_Redraw() was called from task..."

[jens-maus]

Originally on 2013-12-25 12:03:39 +0100

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Summary

When using YAM 2.9 with MUI4 on AmigaOS4 and receiving emails, potentially the following error might come up:

MUI_Redraw() was called from task ... instead of the application's main task!

This is a violation of basic MUI rules!

Steps to reproduce

1. configure a multiple number of accounts in YAM and try to receive mails from these accounts several time.
2. retry to do the same with enabled preselection to better trigger the problem.

Expected results

The mails should be received without such an error/warning

Actual results

The mails are received, but the requester pops up and suspends transfer for a second or two.

Notes

The error seems to be depending on runtime conditions. Thus, it does not always and every time pop up. So depending how busy YAM is or how many emails are received the requester pops up or not. That might be the actual reason why it slipped into the 2.9 release.

It is not clear yet whether "preselection" is required to trigger this warning or if it also occurs if no preselection is enabled at all.

[tboeckel]

Originally on 2013-12-29 02:30:15 +0100

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In (ef17493):

• YAM_UT.c: changed the DisplayStatistics() function to be thread safe. It could happen that a POP3 mail transfer was initiated while the Incoming folder was not the currently active folder and hence its index was flushed from memory before. The POP3 download would then trigger an index reload for the Incoming folder which in turn would update the global folder statistics. That would eventually happen from a different thread than the main thread and produce a warning requester with recent MUI version. The thread safety now closes When receiving emails a MUI error/warning window pops up saying "MUI_Redraw() was called from task..." #484.

[jens-maus]

Originally on 2014-04-06 16:32:56 +0200

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Release Note:
fixed a thread safety issue which resulted in GUI operations being executed not from the main YAM thread but from a different thread. This caused MUI to popup a warning under certain circumstances when downloading mails.