[Vm-dev] Running Alien on Windows

[Andreas Raab]

Hi Igor -

Thanks for trying and feedback. Looks like there's a bit more work to 
do. I agree that we should make interpret() reentrant and use an 
approach like on Android. And we'll get there; it's just a matter of 
finding time to work through the corner cases.

Cheers,
   - Andreas

On 5/3/2010 6:51 PM, Igor Stasenko wrote:
>
> Btw, i am still insist that making interpret() reentrant and calling
> ioProcessEvents() outside of it, so it won't interfere with interpreter's
> state/temps/stack etc . would be much better and safer.
>
>> This cames from newspeak sources:
>>
>> /* - Vassili, May 2008:
>>   *
>>   * The following is significantly revised compared to the original
>> Squeak implementation.
>>   * The ioProcessEvent() function called from inside the interpreter
>> loop is now guarded
>>   * with a lock called inIoProcessEvents. When the lock is>  0 the
>> function is effectively
>>   * disabled. The lock is incremented on entering a callback and
>> decremented on returning
>>   * from a callback. The lock is also accessible at the image level,
>> and Smalltalk code
>>   * in the image can turn off this asynchronous event delivery. In that
>> case it should
>>   * make its own arrangements to pick up and deliver events. For that,
>> an unguarded version
>>   * of the same function is provided called primDrainEventQueue() which
>> is accessible
>>   * as a primitive from inside the image.
>>   */
>>
>> /* This counter prevents reentering the ioProcessEvents message pump.  It is
>>   * also incremented in the callback machinery (in thunkEntry) since the image
>>   * may be running its own message pump for the native GUI.
>>   */
>> int inIoProcessEvents = 0;
>>
>> int ioProcessEvents(void)
>> {
>>   int result;
>>
>>   if (inIoProcessEvents)
>>     return 1;
>>   if (fRunService&&  !fWindows95)
>>     return 1;
>>
>>   ++inIoProcessEvents;
>>   result = primDrainEventQueue();
>>   if (inIoProcessEvents>  0)
>>     --inIoProcessEvents;
>>
>>   return result;
>> }
>>> Dave
>>>
>>>
>>
>> So, since it may require more patching in order to support this flag, i just
>>   commented its use by alien plugin and finally were able to
>> successfully build it.
>>
>> I am not sure if it in working state or not.
>> For those who wanna test it, you can get it here:
>> http://nativeboost.googlecode.com/files/IA32ABI.dll
>> (i placed it there temporarily, so please, pick it up  because i will
>> remove it in a few days)
>>
>> --
>> Best regards,
>> Igor Stasenko AKA sig.
>>
>
>
>