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Implemented generic mechanism for executing tasks on UI thread synchronously

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from the background slicing thread, that supports cancellation.
The generic mechanism is used for generating thumbnails into G-code and
Fixes Fix deadlock when canceling the slicing while gcode is creating thumbnails #6476
Thanks @supermerill for pointing out the issue.
This commit is contained in:
Vojtech Bubnik
2021-05-04 16:07:25 +02:00
parent 5f5d0df47e
commit 1aef86f650
5 changed files with 126 additions and 46 deletions
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3
src/libslic3r/GCode.cpp
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@@ -887,8 +887,7 @@ namespace DoExport {
if (thumbnail_cb != nullptr)
{
const size_t max_row_length = 78;
ThumbnailsList thumbnails;
thumbnail_cb(thumbnails, sizes, true, true, true, true);
ThumbnailsList thumbnails = thumbnail_cb(ThumbnailsParams{ sizes, true, true, true, true });
for (const ThumbnailData& data : thumbnails)
{
if (data.is_valid())