[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate th
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle |
Date: |
Wed, 19 Dec 2018 11:11:56 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
Fei Li <address@hidden> writes:
> On 12/17/2018 03:29 PM, Fei Li wrote:
>>
>>
>> On 12/13/2018 03:26 PM, Markus Armbruster wrote:
>>> There's a question for David Gibson inline. Please search for /ppc/.
>>>
>>> Fei Li <address@hidden> writes:
>>>
>>>> Make qemu_thread_create() return a Boolean to indicate if it succeeds
>>>> rather than failing with an error. And add an Error parameter to hold
>>>> the error message and let the callers handle it.
>>> The "rather than failing with an error" is misleading. Before the
>>> patch, we report to stderr and abort(). What about:
>>>
>>> qemu-thread: Make qemu_thread_create() handle errors properly
>>>
>>> qemu_thread_create() abort()s on error. Not nice. Give it a
>>> return value and an Error ** argument, so it can return success /
>>> failure.
>> A nice commit-amend! Thanks!
>>> Still missing from the commit message then: how you update the callers.
>> Yes, agree. I think the-how should also be noted here, like
>> - propagating the err to callers whose call trace already have the
>> Error paramater;
>> - just add an &error_abort for qemu_thread_create() and make it a
>> "TODO: xxx";
>>> Let's see below.
> According to your below comment and suggestion, I make a summary for
> the second paragraph for the commit message, please help to review,
> thanks. :)
>
> /* ...The first paragraph and the middle blank... */
> And let's update qemu_thread_create()'s callers by
> - setting an error on qemu_thread_create() failure for callers that
> set an error on failure;
> - reporting the error and returning failure for callers that return
> an error code on failure;
> - reporting the error and setting some state for callers that just
> report errors and choose not to continue on.
> - passing &error_abort for qemu_thread_create() for callers that
> can't return failure, and marking a "TODO: " for further change.
>
> Have a nice day
> Fei
If you split the patch so that the first part makes all callers pass
&error_abort, the first part's commit message becomes much simpler, and
the subsequent parts' commit messages should be pretty simple to write,
too.
- Re: [Qemu-devel] [PATCH for-4.0 v8 3/7] migration: fix the multifd code when receiving less channels, (continued)
[Qemu-devel] [PATCH for-4.0 v8 4/7] migration: remove unused &local_err parameter in multifd_save_cleanup, Fei Li, 2018/12/11
[Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Fei Li, 2018/12/11
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Markus Armbruster, 2018/12/19
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Fei Li, 2018/12/19
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Eric Blake, 2018/12/19
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Fei Li, 2018/12/19
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Fei Li, 2018/12/21
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Peter Xu, 2018/12/23
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Fei Li, 2018/12/24
Re: [Qemu-devel] [PATCH for-4.0 v8 6/7] qemu_thread_create: propagate the error to callers to handle, Fei Li, 2018/12/25
[Qemu-devel] [PATCH for-4.0 v8 5/7] migration: add more error handling for postcopy_ram_enable_notify, Fei Li, 2018/12/11