Date: Sun, 30 Oct 2011 17:03:39 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Lev Serebryakov <lev@freebsd.org> Cc: hackers@freebsd.org, current@freebsd.org Subject: Re: In-kernel API for tasks, which could wait? Message-ID: <20111030150339.GP50300@deviant.kiev.zoral.com.ua> In-Reply-To: <43470728.20111030185451@serebryakov.spb.ru> References: <43470728.20111030185451@serebryakov.spb.ru>
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--6B4omjoolujX8zOn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Oct 30, 2011 at 06:54:51PM +0400, Lev Serebryakov wrote: > So, I have question: what should I do if I need to perofrm ONE > action, which could block for some time (for example, open file or > create ALQ)? >=20 > I could create thread for this. But it looks strange and too heavy: crea= te thread > to call one function once. >=20 > Maybe, kernel has some API to postpone such task to one, > always-running idle thread? See taskqueue(9). On the other hand, waiting for the enqueued task to finish is itself the sleepable action. --6B4omjoolujX8zOn Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk6tZ0sACgkQC3+MBN1Mb4guAgCfcYfAru4Fg3QD3rJ4Ww0Zo+Dn RS0AoNfmqRCpOFfzLfD4lfF4c2dftR3x =oMrN -----END PGP SIGNATURE----- --6B4omjoolujX8zOn--
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