[Mono-dev] Mono HEAD eating all CPU

[Lluis Sanchez Gual]

I updated mono to HEAD and now MonoDevelop eats all CPU when running. I
think this is caused by the InotifyWatcher code, since if I define
MONO_MANAGED_WATCHER=1 everything works fine.

This is the managed stack trace of the thread waiting on the watcher:


"" tid=0x0x47432b90 this=0x0x488678:
  at (wrapper managed-to-native) System.IO.InotifyWatcher.ReadFromFD
(intptr,byte[],intptr) <0x00004>
  at (wrapper managed-to-native) System.IO.InotifyWatcher.ReadFromFD
(intptr,byte[],intptr) <0xffffffff>
  at System.IO.InotifyWatcher.Monitor () [0x00010]
in /home/lluis/work/mcs/class/System/System.IO/InotifyWatcher.cs:369
  at (wrapper runtime-invoke) System.Object.runtime_invoke_void
(object,intptr,intptr,intptr) <0xffffffff>

And this is the stack trace shown by gdb. That
mono_thread_interruption_checkpoint_request call looks weird to me.

#0  0xffffe410 in __kernel_vsyscall ()
#1  0x4020203b in read () from /lib/libc.so.6
#2  0x4639d7fd in ?? ()
#3  0xffffffff in ?? ()
#4  0x007ae010 in ?? ()
#5  0x00001000 in ?? ()
#6  0x408b40aa in ?? ()
#7  0x007ae010 in ?? ()
#8  0x0943dcf0 in ?? ()
#9  0x0943dcf0 in ?? ()
#10 0x081008c3 in mono_thread_interruption_checkpoint_request (
    bypass_abort_protection=-9) at threads.c:3449
#11 0x4639d71c in ?? ()
#12 0xffffffff in ?? ()
#13 0x007ae000 in ?? ()


Any clue?
Lluis.