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Bug 270283 - Starvation in NIO2Notifier
Summary: Starvation in NIO2Notifier
Status: RESOLVED FIXED
Alias: None
Product: platform
Classification: Unclassified
Component: Filesystems (show other bugs)
Version: Dev
Hardware: PC Windows 7
: P2 normal (vote)
Assignee: Jaroslav Havlin
URL:
Keywords:
: 270044 (view as bug list)
Depends on:
Blocks:
 
Reported: 2017-04-03 15:25 UTC by Tomas Zezula
Modified: 2017-04-05 08:34 UTC (History)
3 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter:

Attachments
Thread dump (31.72 KB, text/plain)
2017-04-03 15:26 UTC, Tomas Zezula 		Details
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Description Tomas Zezula 2017-04-03 15:25:53 UTC 
The IDE is frozen forever.
See attached thread dump.
Comment 1 Tomas Zezula 2017-04-03 15:26:34 UTC 
Created attachment 164011 [details]
Thread dump
Comment 2 Tomas Zezula 2017-04-03 15:42:14 UTC 
*** Bug 270044 has been marked as a duplicate of this bug. ***
Comment 3 Tomas Zezula 2017-04-04 14:06:06 UTC 
There are 2 problems:

1st) The NIO2Notifier should not be used at all on Windows as there is a WindowsNotifier. Unfortunately the WindowsNotifier is not loaded on Win32 due to
broken jnidispatch-422.dll.

java.lang.UnsatisfiedLinkError: C:\Users\IEUser\AppData\Local\Temp\jna--2138670329\jna1402213887413181948.dll: Invalid
ccess to memory location
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
        at java.lang.Runtime.load0(Runtime.java:809)
        at java.lang.System.load(System.java:1086)
        at com.sun.jna.Native.loadNativeDispatchLibraryFromClasspath(Native.java:851)
        at com.sun.jna.Native.loadNativeDispatchLibrary(Native.java:826)
        at com.sun.jna.Native.<clinit>(Native.java:140)
        at com.sun.jna.Pointer.<clinit>(Pointer.java:41)
        at org.netbeans.modules.masterfs.watcher.windows.WindowsNotifier.<clinit>(WindowsNotifier.java:139)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at java.lang.Class.newInstance(Class.java:442)
        at org.openide.util.lookup.implspi.SharedClassObjectBridge.newInstance(SharedClassObjectBridge.java:64)
        at org.openide.util.lookup.MetaInfServicesLookup$Item.getInstance(MetaInfServicesLookup.java:514)
        at org.netbeans.modules.masterfs.watcher.Watcher.getNotifierForPlatform(Watcher.java:479)
        at org.netbeans.modules.masterfs.watcher.Watcher.<init>(Watcher.java:89)

The library was broken by http://hg.netbeans.org/jet-main/rev/4a55fc56992c.
The tool used for stripping doe not correctly handle Windows DLLs.

2nd) Is a problem in NIO2Notifier which hands in cancel or register.
I am not sure yet if it's a Java or the NIO2Notifier problem.
Comment 4 Tomas Hurka 2017-04-04 14:09:15 UTC 
Stripped version of jna library reverted to original (non-stripped) one.

changeset:   303050:a61bd9cf1509
user:        Tomas Hurka <thurka@netbeans.org>
date:        Tue Apr 04 16:06:11 2017 +0200
summary:     bugfix #270283, changeset 4a55fc56992c (Stripping libs in libs.jna) reverted
Comment 5 Martin Balin 2017-04-05 08:34:35 UTC 
Please revert also in release82.