[Mono-dev] System.Threading.Monitor::Exit fails in latest trees

[Rodrigo Kumpera]

Please file a bug report so we can track this problem.

On Thu, Mar 4, 2010 at 11:12 AM, cpMon <page.cal at gmail.com> wrote:

>
> I never get a signal when System.Threading.Monitor::Exit gets called too
> many
> times. Further, I traced it down into the mono 2.6.1 code tree, and
> mono_monitor_exit is never called. The trampoline generates the code, but
> it's never called. Can you provide a quick fix? It seems like a glaring
> bug.
> Attached is the failing source test along with a mono trace.
>
> Thank You,
> Cal Page
>
> using System;
> using System.Threading;
>
> public class HelloWorld
> {
>        public static Object myMonitor = new Object();
>        public static bool ok = false;
>
>        public static void monitorTest()
>        {
>                Console.WriteLine("calling Enter");
>
>                Monitor.Enter(myMonitor);
>
>                Console.WriteLine("calling Exit");
>
>                Monitor.Exit(myMonitor);
>
>                try {
>
>                        Console.WriteLine("calling Exit #2");
>
>                        Monitor.Exit(myMonitor);
>                } catch ( Exception e ) {
>                        Console.WriteLine ("caught exception");
>                        ok = true;
>                }
>        }
>
>        static public void Main ()
>        {
>                Console.WriteLine ("Hello Mono World");
>
>                monitorTest();
>
>                if ( !ok ) Console.WriteLine("TEST FAILED");
>        }
>
> }
>
>
> Iinteral trace:
>
> ** Message: WSAStartup: high version 0x202
> ** Message: mono_arch_create_monitor_exit_trampoline_full: entry
> ** Message: mono_arch_create_monitor_enter_trampoline_full: entry
> ** Message: mono_monitor_enter: (-1218435344) Locking 0x5cff0
> ** Message: mono_monitor_try_enter_internal: (-1218435344) Trying to lock
> object 0x5cff0 (-1 ms)
> ** Message: mon_new: allocating more monitors: 16
> ** Message: mono_monitor_enter: (-1218435344) Locking 0x6afc0
> ** Message: mono_monitor_try_enter_internal: (-1218435344) Trying to lock
> object 0x6afc0 (-1 ms)
> Hello Mono World
> calling Enter
> ** Message: mono_monitor_enter: (-1218435344) Locking 0x5cff8
> ** Message: mono_monitor_try_enter_internal: (-1218435344) Trying to lock
> object 0x5cff8 (-1 ms)
> calling Exit
> calling Exit #2
> TEST FAILED
> ** Message: WSACleanup: cleaning up
>
>
> --
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> http://n4.nabble.com/System-Threading-Monitor-Exit-fails-in-latest-trees-tp1578116p1578116.html
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