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LibGfx: Make Gfx::Bitmap::set_nonvolatile() report allocation failure
Making a bitmap non-volatile after being volatile may fail to allocate physical pages after the kernel stole the old pages in a purge. This is different from the pages being purged, but reallocated. In that case, they are simply replaced with zero-fill-on-demand pages as if they were freshly allocated.
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23 changed files with 57 additions and 46 deletions
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@ -97,8 +97,9 @@ void ImageResource::update_volatility()
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if (!frame.bitmap) {
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still_has_decoded_image = false;
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} else {
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bool still_has_frame = frame.bitmap->set_nonvolatile();
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if (!still_has_frame)
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bool was_purged = false;
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bool bitmap_has_memory = frame.bitmap->set_nonvolatile(was_purged);
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if (!bitmap_has_memory || was_purged)
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still_has_decoded_image = false;
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}
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}
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