Re: [Qemu-devel] [PATCH for-4.0 v9 11/16] qemu_thread: supplement error handling for emulated_realize

[Markus Armbruster <armbru@redhat.com>]

Fei Li <fli@suse.com> writes:

> Utilize the existed errp to propagate the error and do the
> corresponding cleanup to replace the temporary &error_abort.
>
> Cc: Cc: Markus Armbruster <armbru@redhat.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Signed-off-by: Fei Li <fli@suse.com>
> ---
>  hw/usb/ccid-card-emulated.c | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
>
> diff --git a/hw/usb/ccid-card-emulated.c b/hw/usb/ccid-card-emulated.c
> index f8ff7ff4a3..9245b4fcad 100644
> --- a/hw/usb/ccid-card-emulated.c
> +++ b/hw/usb/ccid-card-emulated.c
> @@ -32,7 +32,6 @@
>  #include "qemu/thread.h"
>  #include "qemu/main-loop.h"
>  #include "ccid.h"
> -#include "qapi/error.h"
>  
>  #define DPRINTF(card, lvl, fmt, ...) \
>  do {\
> @@ -544,11 +543,15 @@ static void emulated_realize(CCIDCardState *base, Error **errp)
>          error_setg(errp, "%s: failed to initialize vcard", TYPE_EMULATED_CCID);
>          goto out2;
>      }
> -    /* TODO: let the further caller handle the error instead of abort() here */
> -    qemu_thread_create(&card->event_thread_id, "ccid/event", event_thread,
> -                       card, QEMU_THREAD_JOINABLE, &error_abort);
> -    qemu_thread_create(&card->apdu_thread_id, "ccid/apdu", handle_apdu_thread,
> -                       card, QEMU_THREAD_JOINABLE, &error_abort);
> +    if (!qemu_thread_create(&card->event_thread_id, "ccid/event", event_thread,
> +                            card, QEMU_THREAD_JOINABLE, errp)) {
> +        goto out2;
> +    }
> +    if (!qemu_thread_create(&card->apdu_thread_id, "ccid/apdu",
> +                            handle_apdu_thread, card,
> +                            QEMU_THREAD_JOINABLE, errp)) {
> +        goto out2;

You need to stop and join the first thread.

> +    }
>  
>  out2:
>      clean_event_notifier(card);