From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46331) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ceF85-0003Oq-Oy for qemu-devel@nongnu.org; Thu, 16 Feb 2017 01:01:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ceF82-0003HU-OR for qemu-devel@nongnu.org; Thu, 16 Feb 2017 01:01:21 -0500 Received: from szxga01-in.huawei.com ([58.251.152.64]:14916) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1ceF82-0003ER-1X for qemu-devel@nongnu.org; Thu, 16 Feb 2017 01:01:18 -0500 From: zhanghailiang Date: Thu, 16 Feb 2017 14:00:20 +0800 Message-ID: <1487224821-120916-4-git-send-email-zhang.zhanghailiang@huawei.com> In-Reply-To: <1487224821-120916-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1487224821-120916-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v2 3/4] char: remove the right fd been watched in qemu_chr_fe_set_handlers() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: jasowang@redhat.com, zhangchen.fnst@cn.fujitsu.com, lizhijian@cn.fujitsu.com Cc: qemu-devel@nongnu.org, xuquan8@huawei.com, pss.wulizhen@huawei.com, zhanghailiang , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= We can call qemu_chr_fe_set_handlers() to add/remove fd been watched in 'context' which can be either default main context or other explicit context. But the original logic is not correct, we didn't remove the right fd because we call g_main_context_find_source_by_id(NULL, tag) which always try to find the Gsource from default context. Fix it by passing the right context to g_main_context_find_source_by_id(). Cc: Paolo Bonzini Cc: Marc-André Lureau Signed-off-by: zhanghailiang --- chardev/char-io.c | 13 +++++++++---- chardev/char-io.h | 2 ++ chardev/char.c | 2 +- 3 files changed, 12 insertions(+), 5 deletions(-) diff --git a/chardev/char-io.c b/chardev/char-io.c index 7dfc3f2..a69cc61 100644 --- a/chardev/char-io.c +++ b/chardev/char-io.c @@ -127,14 +127,14 @@ guint io_add_watch_poll(Chardev *chr, return tag; } -static void io_remove_watch_poll(guint tag) +static void io_remove_watch_poll(guint tag, GMainContext *context) { GSource *source; IOWatchPoll *iwp; g_return_if_fail(tag > 0); - source = g_main_context_find_source_by_id(NULL, tag); + source = g_main_context_find_source_by_id(context, tag); g_return_if_fail(source != NULL); iwp = io_watch_poll_from_source(source); @@ -146,14 +146,19 @@ static void io_remove_watch_poll(guint tag) g_source_destroy(&iwp->parent); } -void remove_fd_in_watch(Chardev *chr) +void qemu_remove_fd_in_watch(Chardev *chr, GMainContext *context) { if (chr->fd_in_tag) { - io_remove_watch_poll(chr->fd_in_tag); + io_remove_watch_poll(chr->fd_in_tag, context); chr->fd_in_tag = 0; } } +void remove_fd_in_watch(Chardev *chr) +{ + qemu_remove_fd_in_watch(chr, NULL); +} + int io_channel_send_full(QIOChannel *ioc, const void *buf, size_t len, int *fds, size_t nfds) diff --git a/chardev/char-io.h b/chardev/char-io.h index d7ae5f1..117c888 100644 --- a/chardev/char-io.h +++ b/chardev/char-io.h @@ -38,6 +38,8 @@ guint io_add_watch_poll(Chardev *chr, void remove_fd_in_watch(Chardev *chr); +void qemu_remove_fd_in_watch(Chardev *chr, GMainContext *context); + int io_channel_send(QIOChannel *ioc, const void *buf, size_t len); int io_channel_send_full(QIOChannel *ioc, const void *buf, size_t len, diff --git a/chardev/char.c b/chardev/char.c index abd525f..5563375 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -560,7 +560,7 @@ void qemu_chr_fe_set_handlers(CharBackend *b, cc = CHARDEV_GET_CLASS(s); if (!opaque && !fd_can_read && !fd_read && !fd_event) { fe_open = 0; - remove_fd_in_watch(s); + qemu_remove_fd_in_watch(s, context); } else { fe_open = 1; } -- 1.8.3.1