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Re: fork expert needed: (was Re: pthreads update for the adventurous)
On Sun, Apr 15, 2001 at 11:25:58PM +1000, Robert Collins wrote:
>----- Original Message -----
>From: "Christopher Faylor" <email@example.com>
>Sent: Sunday, April 15, 2001 11:06 PM
>Subject: Re: fork expert needed: (was Re: pthreads update for the
>> On Sun, Apr 15, 2001 at 12:51:44PM +1000, Robert Collins wrote:
>>>>I added this dll relocation stuff last year to help with perl. It
>>>Oh. Well I infer that it only occurs with threads enabled in python,
>>>or Jason wouldn't be telling us. Any hints Chris for possible
>>>races/locks that might prevent the child doing the relocation if the
>>>parent has active threads ?
>>I believe the relocation happens during DLL initialization when all
>>other threads are suspended.
>fork() doesn't suspend all the threads in the parent. The thread doing
>the call blocks, and the child is started with only one thread. I
>don't believe all the threads are meant to be suspended under posix
>threads either - but I'll look into this.
Let me say this again:
"I believe the relocation happens during DLL initialization when all
other threads are suspended."
Please read up on MSDN on what happens during DLL initialization with
threads and stuff. This isn't a Cygwin thing, it's a windows thing.
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