Another attempt to fix a bug which has plagued ...

Another attempt to fix a bug which has plagued me for a year or more but
which I am apparently the only one who enjoys it. I enclose some thread
dumps in anticipation that someday someone else will experience it too.
No review.

1 files changed, 93 insertions, 0 deletions

diff --git a/docs/development/scala.tools.nsc/zipfile-bug.txt b/docs/development/scala.tools.nsc/zipfile-bug.txt
new file mode 100644
index 0000000000..3838318564
--- /dev/null
+++ b/docs/development/scala.tools.nsc/zipfile-bug.txt
@@ -0,0 +1,93 @@
+// Some stack traces of a bug which has been hitting me regularly
+// for over a year (as of oct 2010.) Manifestation: partest hangs.
+// These are some of the regulars among the thread dumps.
+
+"main" prio=5 tid=101801000 nid=0x100501000 in Object.wait() [1004ff000]
+   java.lang.Thread.State: WAITING (on object monitor)
+ at java.lang.Object.wait(Native Method)
+ - waiting on <112bcc7c0> (a scala.actors.ActorProxy)
+ at java.lang.Object.wait(Object.java:485)
+ at scala.actors.Actor$class.liftedTree1$1(Actor.scala:644)
+ at scala.actors.Actor$class.scala$actors$Actor$$suspendActor(Actor.scala:643)
+ - locked <112bcc7c0> (a scala.actors.ActorProxy)
+ at scala.actors.Actor$blocker$.block(Actor.scala:634)
+ at scala.actors.scheduler.ForkJoinScheduler$$anon$2.block(ForkJoinScheduler.scala:145)
+ at scala.concurrent.forkjoin.ForkJoinPool.awaitBlocker(ForkJoinPool.java:1791)
+ at scala.concurrent.forkjoin.ForkJoinPool.managedBlock(ForkJoinPool.java:1781)
+ at scala.actors.scheduler.ForkJoinScheduler.managedBlock(ForkJoinScheduler.scala:144)
+ at scala.actors.scheduler.DelegatingScheduler$class.managedBlock(DelegatingScheduler.scala:73)
+ at scala.actors.Scheduler$.managedBlock(Scheduler.scala:21)
+ at scala.actors.Actor$class.receiveWithin(Actor.scala:576)
+ - locked <112bcc7c0> (a scala.actors.ActorProxy)
+ at scala.actors.ActorProxy.receiveWithin(ActorProxy.scala:20)
+ at scala.actors.Actor$.receiveWithin(Actor.scala:204)
+ at scala.tools.partest.nest.DirectRunner$$anonfun$runTestsForFiles$1.apply(DirectRunner.scala:65)
+ at scala.tools.partest.nest.DirectRunner$$anonfun$runTestsForFiles$1.apply(DirectRunner.scala:64)
+
+
+"ForkJoinPool-4-worker-11" daemon prio=5 tid=19b680000 nid=0x19d50d000 runnable [19d50b000]
+   java.lang.Thread.State: RUNNABLE
+ at java.util.zip.ZipFile.getNextEntry(Native Method)
+ at java.util.zip.ZipFile.access$400(ZipFile.java:29)
+ at java.util.zip.ZipFile$2.nextElement(ZipFile.java:313)
+ - locked <12581d1e0> (a java.util.zip.ZipFile)
+ at java.util.zip.ZipFile$2.nextElement(ZipFile.java:299)
+ at scala.collection.JavaConversions$JEnumerationWrapper.next(JavaConversions.scala:573)
+ at scala.collection.Iterator$class.foreach(Iterator.scala:631)
+ at scala.collection.JavaConversions$JEnumerationWrapper.foreach(JavaConversions.scala:571)
+ at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
+ at scala.tools.nsc.io.ZipArchive$$anon$1.foreach(ZipArchive.scala:246)
+ at scala.tools.nsc.io.ZipContainer$ZipRootCreator.apply(ZipArchive.scala:143)
+ at scala.tools.nsc.io.ZipArchive.root(ZipArchive.scala:204)
+ - locked <12581d240> (a scala.tools.nsc.io.ZipArchive)
+ at scala.tools.nsc.io.ZipContainer$class.iterator(ZipArchive.scala:170)
+ at scala.tools.nsc.io.ZipArchive.iterator(ZipArchive.scala:197)
+ at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
+ at scala.tools.nsc.io.AbstractFile.foreach(AbstractFile.scala:84)
+ at scala.collection.TraversableLike$class.collect(TraversableLike.scala:271)
+ at scala.tools.nsc.io.AbstractFile.collect(AbstractFile.scala:84)
+ at scala.tools.nsc.util.DirectoryClassPath.classes(ClassPath.scala:315)
+ - locked <12581d2c8> (a scala.tools.nsc.util.DirectoryClassPath)
+ at scala.tools.nsc.util.MergedClassPath$$anonfun$classes$3.apply(ClassPath.scala:342)
+ at scala.tools.nsc.util.MergedClassPath$$anonfun$classes$3.apply(ClassPath.scala:342)
+ at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
+ at scala.collection.immutable.List.foreach(List.scala:45)
+ at scala.tools.nsc.util.MergedClassPath.classes(ClassPath.scala:342)
+ - locked <12581d390> (a scala.tools.nsc.util.JavaClassPath)
+ at scala.tools.nsc.symtab.SymbolLoaders$PackageLoader.doComplete(SymbolLoaders.scala:150)
+ at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:58)
+ at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:32)
+ at scala.tools.nsc.symtab.Symbols$Symbol.info(Symbols.scala:730)
+ at scala.tools.nsc.symtab.Definitions$definitions$.init(Definitions.scala:827)
+ at scala.tools.nsc.Global$Run.<init>(Global.scala:626)
+
+
+at java.util.zip.ZipFile.getNextEntry(Native Method)
+at java.util.zip.ZipFile.access$400(ZipFile.java:29)
+at java.util.zip.ZipFile$2.nextElement(ZipFile.java:313)
+- locked <113014f40> (a java.util.zip.ZipFile)
+at java.util.zip.ZipFile$2.nextElement(ZipFile.java:299)
+at scala.collection.JavaConversions$JEnumerationWrapper.next(JavaConversions.scala:556)
+at scala.collection.Iterator$class.foreach(Iterator.scala:631)
+at scala.collection.JavaConversions$JEnumerationWrapper.foreach(JavaConversions.scala:554)
+at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
+at scala.tools.nsc.io.ZipArchive$$anon$1.foreach(ZipArchive.scala:246)
+at scala.tools.nsc.io.ZipContainer$ZipRootCreator.apply(ZipArchive.scala:143)
+  at scala.tools.nsc.io.ZipArchive.root(ZipArchive.scala:204)
+- locked <113018658> (a scala.tools.nsc.io.ZipArchive)
+at scala.tools.nsc.io.ZipContainer$class.iterator(ZipArchive.scala:170)
+at scala.tools.nsc.io.ZipArchive.iterator(ZipArchive.scala:197)
+at scala.collection.IterableLike$class.foreach(IterableLike.scala:79)
+at scala.tools.nsc.io.AbstractFile.foreach(AbstractFile.scala:84)
+at scala.collection.TraversableLike$class.collect(TraversableLike.scala:271)
+at scala.tools.nsc.io.AbstractFile.collect(AbstractFile.scala:84)
+at scala.tools.nsc.util.DirectoryClassPath.classes(ClassPath.scala:315)
+- locked <1130186e0> (a scala.tools.nsc.util.DirectoryClassPath)
+at scala.tools.nsc.util.MergedClassPath$$anonfun$classes$3.apply(ClassPath.scala:342)
+at scala.tools.nsc.util.MergedClassPath$$anonfun$classes$3.apply(ClassPath.scala:342)
+at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
+at scala.collection.immutable.List.foreach(List.scala:45)
+at scala.tools.nsc.util.MergedClassPath.classes(ClassPath.scala:342)
+- locked <1130187a8> (a scala.tools.nsc.util.JavaClassPath)
+at scala.tools.nsc.symtab.SymbolLoaders$PackageLoader.doComplete(SymbolLoaders.scala:150)
+ +