From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33608) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eqtxT-0008BX-Nb for qemu-devel@nongnu.org; Wed, 28 Feb 2018 00:07:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eqtxS-0000lV-Mf for qemu-devel@nongnu.org; Wed, 28 Feb 2018 00:07:15 -0500 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:47012 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eqtxS-0000lK-Hz for qemu-devel@nongnu.org; Wed, 28 Feb 2018 00:07:14 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2E81E87ABA for ; Wed, 28 Feb 2018 05:07:14 +0000 (UTC) From: Peter Xu Date: Wed, 28 Feb 2018 13:06:27 +0800 Message-Id: <20180228050633.7410-9-peterx@redhat.com> In-Reply-To: <20180228050633.7410-1-peterx@redhat.com> References: <20180228050633.7410-1-peterx@redhat.com> Subject: [Qemu-devel] [PATCH 08/14] chardev: allow telnet gsource to switch gcontext List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini , "Daniel P . Berrange" , Juan Quintela , peterx@redhat.com, Markus Armbruster , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Stefan Hajnoczi , "Dr . David Alan Gilbert" It was originally created by qio_channel_add_watch() so it's always assigning the task to main context. Now we use the new API called qio_channel_add_watch_full() so that we get the GSource handle rather than the tag ID. Meanwhile, caching the gsource in SocketChardev.telnet_source so that we can also do dynamic context switch when update read handlers. Signed-off-by: Peter Xu --- chardev/char-socket.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) diff --git a/chardev/char-socket.c b/chardev/char-socket.c index 8f0935cd15..a16d894c40 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -59,6 +59,7 @@ typedef struct { bool is_listen; bool is_telnet; bool is_tn3270; + GSource *telnet_source; GSource *reconnect_timer; int64_t reconnect_time; @@ -69,6 +70,7 @@ typedef struct { OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET) static gboolean socket_reconnect_timeout(gpointer opaque); +static void tcp_chr_telnet_init(Chardev *chr); static void tcp_chr_reconn_timer_cancel(SocketChardev *s) { @@ -555,6 +557,15 @@ static void tcp_chr_connect(void *opaque) qemu_chr_be_event(chr, CHR_EVENT_OPENED); } +static void tcp_chr_telnet_destroy(SocketChardev *s) +{ + if (s->telnet_source) { + g_source_destroy(s->telnet_source); + g_source_unref(s->telnet_source); + s->telnet_source = NULL; + } +} + static void tcp_chr_update_read_handler(Chardev *chr) { SocketChardev *s = SOCKET_CHARDEV(chr); @@ -568,6 +579,11 @@ static void tcp_chr_update_read_handler(Chardev *chr) qio_net_listener_set_context(s->listener, chr->gcontext); } + if (s->telnet_source) { + tcp_chr_telnet_destroy(s); + tcp_chr_telnet_init(CHARDEV(s)); + } + if (!s->connected) { return; } @@ -592,6 +608,7 @@ static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, gpointer user_data) { TCPChardevTelnetInit *init = user_data; + SocketChardev *s = SOCKET_CHARDEV(init->chr); ssize_t ret; ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); @@ -616,6 +633,8 @@ static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, end: g_free(init); + g_source_unref(s->telnet_source); + s->telnet_source = NULL; return G_SOURCE_REMOVE; } @@ -655,10 +674,10 @@ static void tcp_chr_telnet_init(Chardev *chr) #undef IACSET - qio_channel_add_watch( - s->ioc, G_IO_OUT, - tcp_chr_telnet_init_io, - init, NULL); + s->telnet_source = qio_channel_add_watch_full(s->ioc, G_IO_OUT, + tcp_chr_telnet_init_io, + init, NULL, + chr->gcontext); } @@ -831,6 +850,7 @@ static void char_socket_finalize(Object *obj) tcp_chr_free_connection(chr); tcp_chr_reconn_timer_cancel(s); qapi_free_SocketAddress(s->addr); + tcp_chr_telnet_destroy(s); if (s->listener) { qio_net_listener_set_client_func(s->listener, NULL, NULL, NULL); object_unref(OBJECT(s->listener)); -- 2.14.3