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From: Yao Qi <qiyaoltc@gmail.com>
To: Pedro Alves <palves@redhat.com>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH 1/2] Add constructor and destructor to thread_info
Date: Tue, 28 Mar 2017 14:08:00 -0000	[thread overview]
Message-ID: <86inmto5nx.fsf@gmail.com> (raw)
In-Reply-To: <06385391-127e-87b7-d727-7d03a23f293c@redhat.com> (Pedro Alves's	message of "Tue, 28 Mar 2017 13:12:04 +0100")

Pedro Alves <palves@redhat.com> writes:

>>    /* Non-zero means the thread is executing.  Note: this is different
>>       from saying that there is an active target and we are stopped at
>>       a breakpoint, for instance.  This is a real indicator whether the
>>       thread is off and running.  */
>> -  int executing;
>> +  int executing = 0;
>
> and do:
>
>   bool executing = false;
>
> etc.  (and tweak "Non-zero" references to say "True" instead.)
>
> (the patch's subject just becomes "C++-fy thread_info a bit" instead.)
>

Other thread_info fields can be changed to bool too.  Once I change
"executing" to bool, the 2nd argument of set_executing should be bool
too.  I'll change them in separate patches.


>> @@ -220,7 +205,8 @@ init_thread_list (void)
>>    for (tp = thread_list; tp; tp = tpnext)
>>      {
>>        tpnext = tp->next;
>> -      free_thread (tp);
>> +      delete tp;
>> +
>
> Spurious whitespace.
>

You mean spurious newline?

> These could all be in-class initialized like you did to the other
> fields, instead of using the explicit memset:
>
>  - struct btrace_thread_info btrace;
>  + struct btrace_thread_info btrace {};
>
>  - struct target_waitstatus pending_follow;
>  + struct target_waitstatus pending_follow {TARGET_WAITKIND_SPURIOUS};
>

This will only initialize the first member of union
target_waitstatus.value to zero, so some bits of
target_waitstatus.value.related_pid is not initialized.

> (maybe drop the "struct" too while at it).

-- 
Yao (齐尧)


  reply	other threads:[~2017-03-28 14:08 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-28  8:24 [PATCH 0/2] Fix thread_info refcount Yao Qi
2017-03-28  8:24 ` [PATCH 2/2] Delete thread_info is refcount is zero Yao Qi
2017-03-28 12:10   ` Pedro Alves
2017-04-05 21:15     ` [PATCH 0/2] Don't delete thread_info if refcount isn't zero Yao Qi
2017-04-05 21:15       ` [PATCH 1/2] Hoist code on marking thread as exited Yao Qi
2017-04-06  9:27         ` Pedro Alves
2017-04-05 21:15       ` [PATCH 2/2] Don't delete thread_info if refcount isn't zero Yao Qi
2017-04-06 10:18         ` Pedro Alves
2017-04-07  9:22           ` Yao Qi
2017-04-07 10:29             ` Pedro Alves
2017-04-10 13:40               ` Yao Qi
2017-04-10 14:50                 ` [pushed] GC gdb/thread.c:current_thread_cleanup_chain (Re: [PATCH 2/2] Don't delete thread_info if refcount isn't zero) Pedro Alves
2017-04-10 15:57           ` [PATCH 2/2] Don't delete thread_info if refcount isn't zero Pedro Alves
     [not found] ` <1490689483-16084-2-git-send-email-yao.qi@linaro.org>
2017-03-28 12:12   ` [PATCH 1/2] Add constructor and destructor to thread_info Pedro Alves
2017-03-28 14:08     ` Yao Qi [this message]
2017-03-28 14:47       ` Pedro Alves
2017-03-28 15:40         ` Yao Qi
2017-03-28 22:35           ` Pedro Alves
2017-03-29 15:59             ` Yao Qi

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