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From: "Schmidt, Oliver" <oliv DOT schmidt AT sap DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Date: Wed, 10 Mar 2010 10:55:04 +0100
Subject: Re: Cygwin 1.7: Concurrency Issue with Shared State Initialization
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Hi Corrina,

Thanks for your involvement :-)

>> [...] a spinlock [...] With
>> InterlockedCompareExchange() and Sleep() it should be quite simple to
>> create one that's very efficient in the usual scenario.

> Does the below patch fix this for you?

I'll test the snapshot asap!

[...]
+      LONG init =3D InterlockedCompareExchange (&installation_root_init, 1=
L, 0L);
[...]
+	  low_priority_sleep (0);
[...]

I see we were thinking along the same lines ;-)

Regards, Oliver

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