Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 5.0.4
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Fix Version/s: 5.0.5
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Component/s: Font Engine
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Labels:None
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Environment:any
Description
A support request with two support files came in which exhibited many console exceptions when loading the sample files with two threads.
Issue Links
- is duplicated by
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PDF-1045
No Exception thrown if font is missing
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- Closed
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Activity
Client seems to be happy with this fix, marking as resolved.
Show
Patrick Corless
added a comment - Client seems to be happy with this fix, marking as resolved.
| Field | Original Value | New Value |
|---|---|---|
| Status | Open [ 1 ] | Resolved [ 5 ] |
| Resolution | Fixed [ 1 ] |
| Status | Resolved [ 5 ] | Closed [ 6 ] |
The files in question contain fonts that are shared as resources across multiple files. The underlying data structure for the font is not thread safe having a byte[] indexer that could be manipulated by another thread. So as the glyphs are parsed lazily it's possible for the the byte[] pointer to move incorrectly for a concurrent parse.
For the time being I've made the byte[] pointer thread local which seems to fix the issue. Further testing is needed to verify the fix as well as track down any further issues.