From: Simon Marchi <simark@simark.ca>
To: Andrew Burgess <aburgess@redhat.com>, gdb-patches@sourceware.org
Subject: Re: [PATCHv2 3/6] gdb: add asserts in target.c for target_async_permitted
Date: Wed, 24 Nov 2021 16:21:27 -0500 [thread overview]
Message-ID: <73e29102-49f9-eeda-7d20-54306e0051bd@simark.ca> (raw)
In-Reply-To: <3a174872995221e716715f74fc925d8140950398.1637756330.git.aburgess@redhat.com>
On 2021-11-24 7:22 a.m., Andrew Burgess via Gdb-patches wrote:
> The target_async_permitted flag allows a user to override whether a
> target can act in async mode or not. In previous commits I have moved
> the checking of this flag out of the various ::can_async_p methods and
> into the common target.c code.
>
> In this commit I will add some additional assertions into
> target_is_async_p and target_async. The rules these assertions are
> checking are:
>
> 1. A target that returns false for target_can_async_p should never
> become "async enabled", and so ::is_async_p should always return
> false. This is being checked in target_is_async_p.
>
> 2. GDB should never try to enable async mode for a target that
> returns false for target_can_async_p, this is checked in
> target_async.
>
> There are a few places where we call the ::is_async_p method directly,
> in these cases we will obviously not pass through the assert in
> target_is_async_p, however, there are also plenty of places where we
> do call target_is_async_p so if GDB starts to misbehave we should
> catch it quickly enough.
Despite what I said in my v1 review, it would actually be nice to have a
target_is_async_p wrapper like the new target_can_async_p wrapper, just
to have the gdb_assert checked consistently. But I think it can be done
later, to avoid having a v3 of this series just for a minor detail like
that.
The patch LGTM as-is.
Simon
next prev parent reply other threads:[~2021-11-24 21:21 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-23 14:08 [PATCH 0/4] Improve 'maint set target-async off' for remote targets Andrew Burgess
2021-11-23 14:08 ` [PATCH 1/4] gdb: add asserts in target.c for target_async_permitted Andrew Burgess
2021-11-23 21:31 ` Simon Marchi
2021-11-23 14:08 ` [PATCH 2/4] gdb/remote: merge ::is_async_p and ::can_async_p methods Andrew Burgess
2021-11-23 21:33 ` Simon Marchi
2021-11-24 10:14 ` Andrew Burgess
2021-11-23 14:08 ` [PATCH 3/4] gdb: add assert in remote_target::wait relating to async being off Andrew Burgess
2021-11-23 21:50 ` Simon Marchi
2021-11-23 14:08 ` [PATCH 4/4] gdb/remote: some fixes for 'maint set target-async off' Andrew Burgess
2021-11-23 22:03 ` Simon Marchi
2021-11-23 16:39 ` [PATCH 0/4] Improve 'maint set target-async off' for remote targets John Baldwin
2021-11-24 12:22 ` [PATCHv2 0/6] " Andrew Burgess
2021-11-24 12:22 ` [PATCHv2 1/6] gdb: introduce a new overload of target_can_async_p Andrew Burgess
2021-11-24 12:22 ` [PATCHv2 2/6] gdb: hoist target_async_permitted checks into target.c Andrew Burgess
2021-11-24 21:17 ` Simon Marchi
2021-11-24 12:22 ` [PATCHv2 3/6] gdb: add asserts in target.c for target_async_permitted Andrew Burgess
2021-11-24 21:21 ` Simon Marchi [this message]
2021-11-24 12:22 ` [PATCHv2 4/6] gdb: simplify remote_target::is_async_p Andrew Burgess
2021-11-24 12:22 ` [PATCHv2 5/6] gdb: add assert in remote_target::wait relating to async being off Andrew Burgess
2021-11-24 21:23 ` Simon Marchi
2021-11-25 10:04 ` Andrew Burgess
2021-11-25 11:36 ` Tom de Vries
2021-11-25 13:46 ` Andrew Burgess
2021-11-25 14:17 ` Tom de Vries
2021-11-24 12:22 ` [PATCHv2 6/6] gdb/remote: some fixes for 'maint set target-async off' Andrew Burgess
2021-12-01 10:40 ` [PATCHv3 0/2] Improve 'maint set target-async off' for remote targets Andrew Burgess
2021-12-01 10:40 ` [PATCHv3 1/2] gdb/remote: some fixes for 'maint set target-async off' Andrew Burgess
2021-12-16 21:15 ` Pedro Alves
2021-12-17 13:35 ` Andrew Burgess
2021-12-17 14:05 ` Pedro Alves
2021-12-18 10:21 ` Andrew Burgess
2021-12-01 10:40 ` [PATCHv3 2/2] gdb: add assert in remote_target::wait relating to async being off Andrew Burgess
2021-12-16 21:16 ` Pedro Alves
2021-12-18 10:21 ` Andrew Burgess
2021-12-13 11:41 ` PING: [PATCHv3 0/2] Improve 'maint set target-async off' for remote targets Andrew Burgess
2021-12-13 17:20 ` John Baldwin
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