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[Qemu-devel] [PATCH for-4.0 v9 14/16] qemu_thread: supplement error hand
From: |
Fei Li |
Subject: |
[Qemu-devel] [PATCH for-4.0 v9 14/16] qemu_thread: supplement error handling for vnc_start_worker_thread |
Date: |
Tue, 25 Dec 2018 22:04:47 +0800 |
Supplement the error handling for vnc_thread_worker_thread: add
an Error parameter for it to propagate the error to its caller to
handle in case it fails, and make it return a Boolean to indicate
whether it succeeds.
Cc: Markus Armbruster <address@hidden>
Cc: Gerd Hoffmann <address@hidden>
Signed-off-by: Fei Li <address@hidden>
---
ui/vnc-jobs.c | 17 +++++++++++------
ui/vnc-jobs.h | 2 +-
ui/vnc.c | 4 +++-
3 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/ui/vnc-jobs.c b/ui/vnc-jobs.c
index 5712f1f501..35a652d1fd 100644
--- a/ui/vnc-jobs.c
+++ b/ui/vnc-jobs.c
@@ -332,16 +332,21 @@ static bool vnc_worker_thread_running(void)
return queue; /* Check global queue */
}
-void vnc_start_worker_thread(void)
+bool vnc_start_worker_thread(Error **errp)
{
VncJobQueue *q;
- if (vnc_worker_thread_running())
- return ;
+ if (vnc_worker_thread_running()) {
+ goto out;
+ }
q = vnc_queue_init();
- /* TODO: let the further caller handle the error instead of abort() here */
- qemu_thread_create(&q->thread, "vnc_worker", vnc_worker_thread,
- q, QEMU_THREAD_DETACHED, &error_abort);
+ if (!qemu_thread_create(&q->thread, "vnc_worker", vnc_worker_thread,
+ q, QEMU_THREAD_DETACHED, errp)) {
+ vnc_queue_clear(q);
+ return false;
+ }
queue = 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);
void vnc_jobs_consume_buffer(VncState *vs);
-void vnc_start_worker_thread(void);
+bool vnc_start_worker_thread(Error **errp);
/* Locks */
static inline int vnc_trylock_display(VncDisplay *vd)
diff --git a/ui/vnc.c b/ui/vnc.c
index 0c1b477425..0ffe9e6a5d 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3236,7 +3236,9 @@ void vnc_display_init(const char *id, Error **errp)
vd->connections_limit = 32;
qemu_mutex_init(&vd->mutex);
- vnc_start_worker_thread();
+ if (!vnc_start_worker_thread(errp)) {
+ return;
+ }
vd->dcl.ops = &dcl_ops;
register_displaychangelistener(&vd->dcl);
--
2.13.7
- [Qemu-devel] [PATCH for-4.0 v9 03/16] migration: remove unused &local_err parameter in multifd_save_cleanup, (continued)
- [Qemu-devel] [PATCH for-4.0 v9 03/16] migration: remove unused &local_err parameter in multifd_save_cleanup, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 05/16] migration: unify error handling for process_incoming_migration_co, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 04/16] migration: add more error handling for postcopy_ram_enable_notify, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 08/16] qemu_thread: supplement error handling for qmp_dump_guest_memory, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 07/16] qemu_thread: supplement error handling for qemu_X_start_vcpu, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 06/16] qemu_thread: Make qemu_thread_create() handle errors properly, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 09/16] qemu_thread: supplement error handling for pci_edu_realize, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 10/16] qemu_thread: supplement error handling for h_resize_hpt_prepare, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 11/16] qemu_thread: supplement error handling for emulated_realize, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 12/16] qemu_thread: supplement error handling for iothread_complete/qemu_signalfd_compat, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 14/16] qemu_thread: supplement error handling for vnc_start_worker_thread,
Fei Li <=
- [Qemu-devel] [PATCH for-4.0 v9 13/16] qemu_thread: supplement error handling for migration, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 15/16] qemu_thread: supplement error handling for touch_all_pages, Fei Li, 2018/12/25
- [Qemu-devel] [PATCH for-4.0 v9 16/16] qemu_thread_join: fix segmentation fault, Fei Li, 2018/12/25