Hi,
This is about: https://github.com/IronLanguages/main/issues/1173
I have never analysed IronPython source code, I just try to help you.
I modified:
IronPython-2.7.5\main-ipy-2.7-maint\Languages\IronPython\IronPython\Runtime\WeakRef.cs
to this:
public void ChainCallback(object callback, object weakRef) {
lock (callbacks)
{
callbacks.Add(new CallbackInfo(callback, weakRef));
}
}
Now it is better.
Now sometimes I get this exceptions:
'module' object has no attribute '__all__'
at Microsoft.Scripting.Runtime.LightExceptions.CheckAndThrow(Object
value)
at os$10._get_exports_list$98(PythonFunction $function, Object module)
hely: C:\Program Files (x86)\IronPython 2.7\Lib\os.py, sor: 39
at IronPython.Runtime.FunctionCaller`1.Call1(CallSite site, CodeContext
context, Object func, T0 arg0)
at
System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite
site, T0 arg0, T1 arg1, T2 arg2)
at os$10.os(FunctionCode $functionCode) hely: C:\Program Files
(x86)\IronPython 2.7\Lib\os.py, sor: 743
at IronPython.Compiler.RuntimeScriptCode.InvokeTarget(Scope scope)
at IronPython.Compiler.RuntimeScriptCode.Run(Scope scope)
at IronPython.Runtime.PythonContext.InitializeModule(String fileName,
ModuleContext moduleContext, ScriptCode scriptCode, ModuleOptions options)
at IronPython.Runtime.PythonContext.CompileModule(String fileName, String
moduleName, SourceUnit sourceCode, ModuleOptions options, ScriptCode&
scriptCode)
at IronPython.Runtime.PythonContext.CompileModule(String fileName, String
moduleName, SourceUnit sourceCode, ModuleOptions options)
…
I do not know why but I cannot localize the error because
putting breakpoint to LightExceptions.CheckAndThrow(Object value) method was
not working
and this error rarely occurs
Best Regards
David
----- Eredeti üzenet -----
From: Jeff Hardy
Sent: Sunday, March 1, 2015 4:42 PM
To: Jeffrey Zhao
Cc: ironpython-users@python.org
Subject: Re: [Ironpython-users] IronPython (ScriptEngine) is not thread
safe?
On Thu, Feb 26, 2015 at 9:39 AM, Jeffrey Zhao <je...@live.com> wrote:
Hi guys,
I've met an issue when trying to use multiple ScriptEngine instances in
parallel, since there's no information saying that a single ScriptEngine
instance could be used concurrently. Please note "thread-safe" is not
enough
for me. What I need is the real parallelized execution in multiple
threads,
so I'm trying to use separated ScriptEngine instances in different
threads.
In theory ScriptEngines should be independent and able to run in
parallel without issues. However, there might be interactions with
other parts that still have threading issues (this, BTW, is why
CPython uses a GIL - writing a free-threaded runtime correctly is
*hard*, and it's far to easy to bugs to slip in inadvertantly.)
It looks like this is that same as
https://github.com/IronLanguages/main/issues/1173 that was opened
recently with basically the same problem - there might be a race
condition in the weakref module. I'll try and track it down since
there's a couple of good small test cases to work from.
- Jeff
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