From: Pedro Alves <pedro@palves.net>
To: Youling Tang <tangyouling@loongson.cn>, gdb-patches@sourceware.org
Subject: Re: [PATCH] gdbsupport: Remove some unnecessary ifdef HAVE_POLL judgments
Date: Fri, 13 May 2022 10:28:46 +0100 [thread overview]
Message-ID: <634dfd3e-dca9-3c5a-cf63-2a86ca23e40e@palves.net> (raw)
In-Reply-To: <20220513074905.21554-1-tangyouling@loongson.cn>
On 2022-05-13 08:49, Youling Tang wrote:
> By searching event-loop.cc we found that there are only the following 2
> places to assign values to use_poll,
> $ grep -nr use_poll gdbsupport/event-loop.cc
> 88:static unsigned char use_poll = USE_POLL;
> 263: use_poll = 0;
>
> This USE_POLL is defined as follows,
> #ifdef HAVE_POLL
> #define USE_POLL 1
> #else
> #define USE_POLL 0
> #endif
>
> So use_poll may be 1 only if HAVE_POLL is defined. Removed "ifdef
> HAVE_POLL" judgment in use_poll control block.
>
> Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Maybe I'm missing something, but ISTM this can't possible work on hosts that don'
have poll at all. Like e.g., mingw:
$ grep POLL *
config.h:/* #undef HAVE_POLL */
config.h:/* #undef HAVE_POLL_H */
config.h:/* #undef HAVE_SYS_POLL_H */
Surely they'll fail to compile after the patch?
next prev parent reply other threads:[~2022-05-13 9:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 7:49 Youling Tang
2022-05-13 9:28 ` Pedro Alves [this message]
2022-05-13 10:09 ` Youling Tang
2022-05-13 10:21 ` Pedro Alves
2022-05-14 1:14 ` Youling Tang
2022-05-16 9:31 ` [PATCH] gdbsupport/even-loop.cc: simplify !HAVE_POLL paths Pedro Alves
2022-05-16 12:13 ` Youling Tang
2022-05-16 15:24 ` Tom Tromey
2022-05-16 19:01 ` [ob/pushed] Reindent gdbsupport/event-loop.cc:handle_file_event (Re: [PATCH] gdbsupport/even-loop.cc: simplify !HAVE_POLL paths) Pedro Alves
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