From: Helmut Eller <eller.helmut@gmail.com>
To: Po Lu <luangruo@yahoo.com>
Cc: Eli Zaretskii <eliz@gnu.org>,
gerd.moellmann@gmail.com, emacs-devel@gnu.org
Subject: Re: MPS prstack
Date: Mon, 27 May 2024 17:08:24 +0200 [thread overview]
Message-ID: <878qzvl2c7.fsf@gmail.com> (raw)
In-Reply-To: <s54o78rfh7t.fsf@yahoo.com> (Po Lu's message of "Mon, 27 May 2024 22:43:34 +0800")
On Mon, May 27 2024, Po Lu wrote:
> Helmut Eller <eller.helmut@gmail.com> writes:
>
>> Yes. I think
>>
>> prstack.stack[prstack.sp] = e;
>> __atomic_store_n (&prstack.sp, prstack.sp + 1, __ATOMIC_SEQ_CST);
>>
>> is quite sufficient.
>
> How so? This doesn't guarantee that MPS cannot pause the thread after E
> is saved into prstack but before prstack.sp is incremented,
Right. But we are sure that prstack.sp is not incremented before E is
saved. And scan_prstack doesn't care what is beyond prstack.sp.
> or that E
> will remain on the control stack or in the register file until it is.
Yes. But that's another issue. That could be solved by making
print_stack_push a non-inline function that takes a reference to E as
argument.
next prev parent reply other threads:[~2024-05-27 15:08 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-20 17:54 MPS prstack Helmut Eller
2024-05-20 18:21 ` Gerd Möllmann
2024-05-20 18:32 ` Helmut Eller
2024-05-21 3:30 ` Gerd Möllmann
2024-05-22 16:27 ` Helmut Eller
2024-05-22 17:55 ` Gerd Möllmann
2024-05-24 14:17 ` Helmut Eller
2024-05-24 14:27 ` Gerd Möllmann
2024-05-25 13:45 ` Gerd Möllmann
2024-05-27 7:27 ` Helmut Eller
2024-05-27 8:43 ` Gerd Möllmann
2024-05-27 9:15 ` Helmut Eller
2024-05-27 9:47 ` Gerd Möllmann
2024-05-27 11:45 ` Eli Zaretskii
2024-05-27 12:39 ` Helmut Eller
2024-05-27 13:12 ` Eli Zaretskii
2024-05-27 14:15 ` Helmut Eller
2024-05-27 14:37 ` Mattias Engdegård
2024-05-27 14:54 ` Helmut Eller
2024-05-27 14:43 ` Po Lu
2024-05-27 15:08 ` Helmut Eller [this message]
2024-05-27 11:34 ` Eli Zaretskii
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