From nobody Wed Nov 5 18:38:21 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1536327850262939.0684860774393; Fri, 7 Sep 2018 06:44:10 -0700 (PDT) Received: from localhost ([::1]:38745 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fyH3L-00021n-Ta for importer@patchew.org; Fri, 07 Sep 2018 09:44:04 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44361) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fyGz2-00065i-Re for qemu-devel@nongnu.org; Fri, 07 Sep 2018 09:39:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fyGz1-0005Yj-So for qemu-devel@nongnu.org; Fri, 07 Sep 2018 09:39:36 -0400 Received: from smtp.nue.novell.com ([195.135.221.5]:36355) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fyGz1-0005Vu-ID for qemu-devel@nongnu.org; Fri, 07 Sep 2018 09:39:35 -0400 Received: from localhost.localdomain ([45.122.156.254]) by smtp.nue.novell.com with ESMTP (NOT encrypted); Fri, 07 Sep 2018 15:39:31 +0200 From: Fei Li To: qemu-devel@nongnu.org Date: Fri, 7 Sep 2018 21:39:00 +0800 Message-Id: <20180907133902.28462-3-fli@suse.com> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20180907133902.28462-1-fli@suse.com> References: <20180907133902.28462-1-fli@suse.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.135.221.5 Subject: [Qemu-devel] [PATCH v2 2/4] ui/vnc.c: polish vnc_init_func X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fli@suse.com, famz@redhat.com, armbru@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Add a new Error parameter for vnc_display_init() to handle errors in its caller: vnc_init_func(), just like vnc_display_open() does. And let the call trace propagate the Error. Besides, make vnc_start_worker_thread() return a bool to indicate whether it succeeds instead of returning nothing. Signed-off-by: Fei Li --- include/ui/console.h | 2 +- ui/vnc-jobs.c | 9 ++++++--- ui/vnc-jobs.h | 2 +- ui/vnc.c | 12 +++++++++--- 4 files changed, 17 insertions(+), 8 deletions(-) diff --git a/include/ui/console.h b/include/ui/console.h index fb969caf70..c17803c530 100644 --- a/include/ui/console.h +++ b/include/ui/console.h @@ -453,7 +453,7 @@ void qemu_display_early_init(DisplayOptions *opts); void qemu_display_init(DisplayState *ds, DisplayOptions *opts); =20 /* vnc.c */ -void vnc_display_init(const char *id); +void vnc_display_init(const char *id, Error **errp); void vnc_display_open(const char *id, Error **errp); void vnc_display_add_client(const char *id, int csock, bool skipauth); int vnc_display_password(const char *id, const char *password); diff --git a/ui/vnc-jobs.c b/ui/vnc-jobs.c index 929391f85d..8807d7217c 100644 --- a/ui/vnc-jobs.c +++ b/ui/vnc-jobs.c @@ -331,15 +331,18 @@ static bool vnc_worker_thread_running(void) return queue; /* Check global queue */ } =20 -void vnc_start_worker_thread(void) +bool vnc_start_worker_thread(Error **errp) { VncJobQueue *q; =20 - if (vnc_worker_thread_running()) - return ; + if (vnc_worker_thread_running()) { + goto out; + } =20 q =3D vnc_queue_init(); qemu_thread_create(&q->thread, "vnc_worker", vnc_worker_thread, q, QEMU_THREAD_DETACHED); queue =3D q; /* Set global queue */ +out: + return true; } diff --git a/ui/vnc-jobs.h b/ui/vnc-jobs.h index 59f66bcc35..14640593db 100644 --- a/ui/vnc-jobs.h +++ b/ui/vnc-jobs.h @@ -37,7 +37,7 @@ void vnc_job_push(VncJob *job); void vnc_jobs_join(VncState *vs); =20 void vnc_jobs_consume_buffer(VncState *vs); -void vnc_start_worker_thread(void); +bool vnc_start_worker_thread(Error **errp); =20 /* Locks */ static inline int vnc_trylock_display(VncDisplay *vd) diff --git a/ui/vnc.c b/ui/vnc.c index ccb1335d86..f632635ea4 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -3206,7 +3206,7 @@ static const DisplayChangeListenerOps dcl_ops =3D { .dpy_cursor_define =3D vnc_dpy_cursor_define, }; =20 -void vnc_display_init(const char *id) +void vnc_display_init(const char *id, Error **errp) { VncDisplay *vd; =20 @@ -3236,7 +3236,9 @@ void vnc_display_init(const char *id) vd->connections_limit =3D 32; =20 qemu_mutex_init(&vd->mutex); - vnc_start_worker_thread(); + if (!vnc_start_worker_thread(errp)) { + return; + } =20 vd->dcl.ops =3D &dcl_ops; register_displaychangelistener(&vd->dcl); @@ -4079,7 +4081,11 @@ int vnc_init_func(void *opaque, QemuOpts *opts, Erro= r **errp) char *id =3D (char *)qemu_opts_id(opts); =20 assert(id); - vnc_display_init(id); + vnc_display_init(id, &local_err); + if (local_err) { + error_reportf_err(local_err, "Failed to init VNC server: "); + exit(1); + } vnc_display_open(id, &local_err); if (local_err !=3D NULL) { error_reportf_err(local_err, "Failed to start VNC server: "); --=20 2.13.7