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Sun, 13 Dec 2020 12:48:38 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1607860118; bh=ow6CqJwt6pzmZ/mOKyfaSBI+t9Ysq8dUW+Iznaaw7vY=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=Ttq+gmpGf2IJWZPeOdw79VBqgw+3my3uaj//ZYrG/ZSj3G6CFXhck4m0nfZD3b2VZ bcgpI/50ANYZMUIj95GdD5VMrrVahstJJhyggBkKgoxjbOgb1gkar6MkC+N8RLAu1j tI5V5OkeQ/cgTP39ZYmjAtQFIraefN+L6n+fxRRM= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Date: Sun, 13 Dec 2020 12:48:37 +0100 From: Lukas Straub To: qemu-devel Subject: [PATCH v12 6/7] io: Document qmp oob suitability of qio_channel_shutdown and io_shutdown Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/Y3lGdAfFuOPMepDIAEWOs=6"; protocol="application/pgp-signature"; micalg=pgp-sha256 X-Provags-ID: V03:K1:XBCsRBmv/QvQPbtQ5FH+99xa+rJUpH24txh2B0s1pvjW8cN3o3F iSZ7Iw6IhGeIO/iDshNpIRCOBOPvPJmLjAl79BA4XIIqWTAPmWiWqVeeQ2xn+UG5wd5OTxq sDUf0/KDe0ZNdRRe/jRAYRlUC3F6N+QbF/pcG0O2xCtsPOmbj+hvQDVaC9WTc6Y8pi/PmHm u+xUD9Lbf5KvrFCVwYtLg== X-UI-Out-Filterresults: notjunk:1;V03:K0:z+D/+oNA0Ts=:jaL9UcM3bQZHhbgrbDJ6P9 h7cq8azMt5qmOCdDgqWu3LiGJFIVDFeU3oVP84LMKfqG+ADwQSxQjhG+RJeHQVMrMvDsEf0Dw oWlSW9j3MjaP8OZG9t6d8Dp5focSflKWwQ+4CiEWEzl3qE3f2kV6SpAkQPKuH4YnqtsdtcDVd qj66+iTPYKKJr2zXNrhh1RnqRszWns2n9XTSewJ+9WK0QW24j7wCVP7CnmUh36B4pFgkMQ7rg mf3dEG9CI4yNGykjoEitxJEeHU2Rg5+KQKaNICfHcY8FsEAeN/bK6clo7X0Aaeu6xWi+LlRQ6 4FrX/rB/biPxyemf1GfBiz+ITSzj3HlhkvjswtsPY3AI9QsIgdzP8aKIlZYofzUXkWoyylVIP daBv1Z764ArMD4GEOjHpGWMACkh7U8v6SCfG+QOyg7fg2uD2pwQbIoei2VX0QQDLCRCNB9WR6 3YvPm/GVn6vqDIBMPk5SoGVKlJ8L3Q72L3ZiKVj8BHUpaYHI7c+uBeYPjUHQtGI8W5F0GBZMq qqESofeYP2HHtSN3XFVLbarQkN44EdBbE25GaV25MKk2R3bPaLNBBBgpbaMyvlbZhsZwDGQMP WWQhSdPjpLv8Wmjtp6YVcXF2hY8WpwFhrVPBx0jeC8TcxGO37h5CFoLSJiNd0rxNPjdWBjZcj BwtUMB9bm5/hVblTd1BbD7BRQv2DfTDi0Yz3mlkstJbK1HvyBcxoY6yGrYiWItF6u2zhpylE1 NdKDeECWrrt4S0Q2pQMNrx2bNlU3rb9IDfQqUEKB4gmeA+Yxiq9oju8z6jhpmd+8CEsgmUStT R7Vmk/J5pm7GWM8AUVKNYcgVWjJZWpHMtnokKJcd4SMluhFFhPgB7PYrjxAWmnkUmh1Jcj0LQ SwvBWk9GfZaYecoXmU0AGBhHpaFQK7vY7GWiirGgg= Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Migration and yank code assume that qio_channel_shutdown is thread -safe and can be called from qmp oob handler. Document this after checking the code. Signed-off-by: Lukas Straub Acked-by: Stefan Hajnoczi Reviewed-by: Daniel P. Berrang=C3=A9 --- include/io/channel.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/io/channel.h b/include/io/channel.h index 4d6fe45f63..ab9ea77959 100644 --- a/include/io/channel.h +++ b/include/io/channel.h @@ -92,7 +92,8 @@ struct QIOChannel { * provide additional optional features. * * Consult the corresponding public API docs for a description - * of the semantics of each callback + * of the semantics of each callback. io_shutdown in particular + * must be thread-safe, terminate quickly and must not block. */ struct QIOChannelClass { ObjectClass parent; @@ -510,6 +511,8 @@ int qio_channel_close(QIOChannel *ioc, * QIO_CHANNEL_FEATURE_SHUTDOWN prior to calling * this method. * + * This function is thread-safe, terminates quickly and does not block. + * * Returns: 0 on success, -1 on error */ int qio_channel_shutdown(QIOChannel *ioc, -- 2.20.1 --Sig_/Y3lGdAfFuOPMepDIAEWOs=6 Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEg/qxWKDZuPtyYo+kNasLKJxdslgFAl/V/5UACgkQNasLKJxd sljC+RAAqo8A9WOh2NEHK0d0TLmTQnHNSzyTu9kioLseT/9vt7EphVKqfONG+Nlu J53x9BvcTb60PqhWB9TWnvGt8MNmyz4Zs0x7tD1aE8Bz+A/htdPDnHaxCpkrauUR tDj5XSkzcb0XAOJPv6E7on1QDMVBtCRHFsgpwzht/4WVOlr+9EgwtAfV3eYoJsQ+ SWRFv82U4rrM5/3ElFGgJfP3WW20SWXUXsixt3XgYZ10iiGAyEukoEnhGLp9oGhE 04PvU60385siY/CzREiYSuQSVBxpuF/HY8JE86UrY9oDAmrAiS2HWjq0ymkKcTPr NAP0Tyyc+gew5rRM8oKOyWDshjT7dqldea2Qo7kD9AP1ZreBhWwqqDGvR3wJWp+c /2CD6frMUvvS0VMVgeUTqUfMl/S/ZH6ZwSI0P4sy7m/ggKI0ghOobB3n6SyqhjS0 Yr7+b/ZKPV4ee1U0NTz3M2xid989/+PFkBlhAuqw2f9AAageTcx9Y2SjJbbbiKAB STKIn85J34ZFitP6b6QnMSJQZio457oVYlT3p2+DMzQtdV7mLi/t5nX8OytUA3Gz qajUDNl93azY6KC8XqsZlgb5AmMNC5VNFnqeBc6wicx8bE0lrBIOJ8/Pdo7KVzvR Fg+Zkhgi3d3h2Lw/JzL6LwnXNss4t3JQHiMjnqSoNSNyzgtSzow= =Qd6+ -----END PGP SIGNATURE----- --Sig_/Y3lGdAfFuOPMepDIAEWOs=6--