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identity=mailfrom; envelope-from="ality@pbrane.org"; helo=MTA-13-4.privateemail.com; client-ip=198.54.127.109 Received: from MTA-13-4.privateemail.com (mta-13-4.privateemail.com [198.54.127.109]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Wed, 16 Jun 2021 17:10:15 -0400 (EDT) (envelope-from ality@pbrane.org) Received: from mta-13.privateemail.com (localhost [127.0.0.1]) by mta-13.privateemail.com (Postfix) with ESMTP id CDB9A8017C for <9fans@9fans.net>; Wed, 16 Jun 2021 17:10:14 -0400 (EDT) Received: from localhost (unknown [10.20.151.237]) by mta-13.privateemail.com (Postfix) with ESMTPA id E92998017F for <9fans@9fans.net>; Wed, 16 Jun 2021 17:10:13 -0400 (EDT) Date: Wed, 16 Jun 2021 14:10:07 -0700 From: Anthony Martin To: 9fans <9fans@9fans.net> Subject: Re: [9fans] non-interruptible temporary: why do we care? Message-ID: References: <41FE44BF416FFB4B9ED729FE2AB1A4DE@eigenstate.org> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline In-Reply-To: X-Virus-Scanned: ClamAV using ClamSMTP Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 42d40176-cee7-11eb-b4e2-e34a41c2bc59 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZGNmYjhmODRjOTBlYjE5OS1NYTVmMTFhZDg0ZjEzY2Q4MWJhMGM4?= =?UTF-8?B?Yzg1Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Ma5f11ad84f13cd81ba0c8c85:1:REm9IcKW1FvSnz5JKGVqXJXh-oHbXjNkIRBro_Nt2uY unobe@cpan.org once said: > Quoth ori@eigenstate.org: > > Why do we warn about non-interruptible > > temporaries? What issues am I missing? > > Silence to this question means no one knows, right? There is nothing new under the sun. Date: Mon, 4 Apr 2005 14:10:20 -0400 From: Russ Cox To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Subject: Re: [9fans] 'non-interruptable temporary' warning Message-ID: the compiler is warning you against its own laziness. in this case it is using a global temporary to hold the intermediate value of (lba =3D f->lba) while converting it to uchar. if you had another thread running through this code it would use the same temporary. [...] Cheers, Anthony ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tdcfb8f84c90eb199-Ma5f11= ad84f13cd81ba0c8c85 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription