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Date: Mon, 16 Jan 2023 22:42:54 +0100
To: cygwin AT cygwin DOT com
Subject: Re: Cygwin 3.4.3 and 3.5.0... hangs in make, top, procps, ls
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From: Corinna Vinschen via Cygwin <cygwin AT cygwin DOT com>
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Hi Takashi,

On Jan 16 16:18, Corinna Vinschen via Cygwin wrote:
> Actually, I' running your testcase on two machines in parallel now for
> quite some time, which only one hunk of 60675f1a7eb2 reverted, i.e.
> 
> diff --git a/winsup/cygwin/mm/shared.cc b/winsup/cygwin/mm/shared.cc
> index 893b20d289b4..6d6d2940b6d4 100644
> --- a/winsup/cygwin/mm/shared.cc
> +++ b/winsup/cygwin/mm/shared.cc
> @@ -140,7 +140,11 @@ open_shared (const WCHAR *name, int n, HANDLE& shared_h, DWORD size,
>    if (*m == SH_JUSTCREATE || *m == SH_JUSTOPEN)
>      addr = NULL;
>    else
> -    addr = (void *) region_address[*m];
> +    {
> +      addr = (void *) region_address[*m];
> +      VirtualFree (addr, 0, MEM_RELEASE);
> +    }
> +
>  
>    WCHAR map_buf[MAX_PATH];
>    WCHAR *mapname = NULL;
> 
> So far (and knocking on wood madly while writing this) the mapping
> problem didn't show up once.  Maybe you'd like to try the same?

Never mind, I encountered another error.  After a bit more debugging
I think I understand the problem now, and  I'm just in the process of
reworking open_shared.  This may take a day or two.  Stay tuned.


Corinna

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