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https://issues.apache.org/jira/browse/PDFBOX-5460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17563342#comment-17563342
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Andreas Lehmkühler edited comment on PDFBOX-5460 at 7/6/22 5:17 PM:
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[~tilman] Thanks for double checking!
I've removed the ondemand TTF-parser, which should it make less likely that
a(nother) dead lock appears. Tilmans changes already fix the origin issue. I'd
like to do some more refactoring but I'm going to open another ticket for that.
For new I'm done here.
was (Author: lehmi):
[~tilman] Thanks for double checking!
I've remove the ondemand TTF-parser, which should it make less likely that
a(nother) dead lock appears. I'd like to do some more refactoring but I'm going
to open another ticket for that. For new I'm done here.
> Deadlock in TrueTypeFont and RAFDataStream
> ------------------------------------------
>
> Key: PDFBOX-5460
> URL: https://issues.apache.org/jira/browse/PDFBOX-5460
> Project: PDFBox
> Issue Type: Bug
> Components: FontBox
> Affects Versions: 2.0.26
> Reporter: Ram Lakshmanan
> Priority: Major
> Labels: deadlock
> Fix For: 2.0.27, 3.0.0 PDFBox
>
>
> Deadlock is happening between *org.apache.fontbox.ttf.RAFDataStream* and
> *org.apache.fontbox.ttf.TrueTypeFont* objects. Below is the stack trace of
> the two threads which are in deadlock. If you want to see the complete thread
> dump you can [refer it
> here|https://fastthread.io/my-thread-report.jsp?p=c2hhcmVkLzIwMjIvMDYvMTUvLS1wZGYtYm94LWRlYWRsb2NrLnppcC0tMjItMjQtNTc=&s=t].
>
> {code:java}
> APP_Thread_50408_759_100162222_WorkerTask_1652842343227_P_Th_SPR-APP-pool-5-thread-6
> PRIORITY : 5
> THREAD ID : 0X00007F894C406000
> NATIVE ID : 0X44D1
> NATIVE ID (DECIMAL) : 17617
> STATE : BLOCKED
> stackTrace:
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.fontbox.ttf.TrueTypeFont.getTable(TrueTypeFont.java:147)
> - waiting to lock <0x00000002d216fec8> (a org.apache.fontbox.ttf.TrueTypeFont)
> at
> org.apache.fontbox.ttf.TrueTypeFont.getHorizontalMetrics(TrueTypeFont.java:229)
> at org.apache.fontbox.ttf.GlyphTable.getGlyphData(GlyphTable.java:210)
> at org.apache.fontbox.ttf.GlyphTable.getGlyph(GlyphTable.java:191)
> - locked <0x00000002d218ca28> (a org.apache.fontbox.ttf.RAFDataStream)
> at org.apache.fontbox.ttf.TrueTypeFont.getPath(TrueTypeFont.java:676)
> at org.apache.pdfbox.pdmodel.font.PDType1Font.getPath(PDType1Font.java:638)
> at
> org.apache.pdfbox.rendering.Type1Glyph2D.getPathForCharacterCode(Type1Glyph2D.java:83)
> at org.apache.pdfbox.rendering.PageDrawer.drawGlyph2D(PageDrawer.java:495)
> at org.apache.pdfbox.rendering.PageDrawer.showFontGlyph(PageDrawer.java:476)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showGlyph(PDFStreamEngine.java:787)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showGlyph(PDFStreamEngine.java:805)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showText(PDFStreamEngine.java:743)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showTextString(PDFStreamEngine.java:606)
> at
> org.apache.pdfbox.contentstream.operator.text.ShowText.process(ShowText.java:56)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:933)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:514)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:492)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:155)
> at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:277)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:347)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:268)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:228)
> at
> xxxxxxx.export.service.thumbnail.PDFSlideGeneratorServiceImpl$1.call(PDFSlideGeneratorServiceImpl.java:60)
> at
> xxxxxxx.ops.executor.util.ParallelExecutorTask.doCall(ParallelExecutorTask.java:43)
> at
> xxxxxxx.ops.executor.util.ParallelExecutor.executeTaskFromQueue(ParallelExecutor.java:154)
> at
> xxxxxxx.ops.executor.util.ParallelExecutor.access$100(ParallelExecutor.java:26)
> at
> xxxxxxx.ops.executor.util.ParallelExecutor$WorkerTask.doCall(ParallelExecutor.java:164)
> at
> xxxxxxx.ops.executor.util.UserContextAwareCallable.call(UserContextAwareCallable.java:89)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> APP_Thread_50408_759_100162222_WorkerTask_1652842343227_P_Th_SPR-APP-pool-5-thread-5
> PRIORITY : 5
> THREAD ID : 0X00007F894C404800
> NATIVE ID : 0X44D0
> NATIVE ID (DECIMAL) : 17616
> STATE : BLOCKED
> stackTrace:
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.fontbox.ttf.TrueTypeFont.readTable(TrueTypeFont.java:356)
> - waiting to lock <0x00000002d218ca28> (a
> org.apache.fontbox.ttf.RAFDataStream)
> at org.apache.fontbox.ttf.TrueTypeFont.getTable(TrueTypeFont.java:150)
> - locked <0x00000002d216fec8> (a org.apache.fontbox.ttf.TrueTypeFont)
> at org.apache.fontbox.ttf.TrueTypeFont.getCmap(TrueTypeFont.java:262)
> at
> org.apache.fontbox.ttf.TrueTypeFont.getUnicodeCmapImpl(TrueTypeFont.java:556)
> at
> org.apache.fontbox.ttf.TrueTypeFont.getUnicodeCmapLookup(TrueTypeFont.java:541)
> at org.apache.fontbox.ttf.TrueTypeFont.nameToGID(TrueTypeFont.java:629)
> at org.apache.fontbox.ttf.TrueTypeFont.hasGlyph(TrueTypeFont.java:698)
> at
> org.apache.pdfbox.pdmodel.font.PDType1Font.getNameInFont(PDType1Font.java:601)
> at org.apache.pdfbox.pdmodel.font.PDType1Font.hasGlyph(PDType1Font.java:645)
> at
> org.apache.pdfbox.rendering.Type1Glyph2D.getPathForCharacterCode(Type1Glyph2D.java:59)
> at org.apache.pdfbox.rendering.PageDrawer.drawGlyph2D(PageDrawer.java:495)
> at org.apache.pdfbox.rendering.PageDrawer.showFontGlyph(PageDrawer.java:476)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showGlyph(PDFStreamEngine.java:787)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showGlyph(PDFStreamEngine.java:805)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showText(PDFStreamEngine.java:743)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.showTextString(PDFStreamEngine.java:606)
> at
> org.apache.pdfbox.contentstream.operator.text.ShowText.process(ShowText.java:56)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:933)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:514)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:492)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:155)
> at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:277)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:347)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:268)
> at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:228)
> at
> xxxxxxx.export.service.thumbnail.PDFSlideGeneratorServiceImpl$1.call(PDFSlideGeneratorServiceImpl.java:60)
> at
> xxxxxxx.ops.executor.util.ParallelExecutorTask.doCall(ParallelExecutorTask.java:43)
> at
> xxxxxxx.ops.executor.util.ParallelExecutor.executeTaskFromQueue(ParallelExecutor.java:154)
> at
> xxxxxxx.ops.executor.util.ParallelExecutor.access$100(ParallelExecutor.java:26)
> at
> xxxxxxx.ops.executor.util.ParallelExecutor$WorkerTask.doCall(ParallelExecutor.java:164)
> at
> xxxxxxx.ops.executor.util.UserContextAwareCallable.call(UserContextAwareCallable.java:89)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748) {code}
>
>
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