diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2020-10-05 17:58:51 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-10-09 07:08:20 +0200 |
| commit | bb4b9ead95c3aaca84823e28dd9f11ccaa875c14 (patch) | |
| tree | fd17d7da1941f5b0514dca6a8987cbee6ee9770d /docs/devel | |
| parent | 9ce44e2ce267caf5559904a201aa1986b0a8326b (diff) | |
hmp: Add support for coroutine command handlers
Often, QMP command handlers are not only called to handle QMP commands,
but also from a corresponding HMP command handler. In order to give them
a consistent environment, optionally run HMP command handlers in a
coroutine, too.
The implementation is a lot simpler than in QMP because for HMP, we
still block the VM while the coroutine is running.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20201005155855.256490-11-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'docs/devel')
| -rw-r--r-- | docs/devel/qapi-code-gen.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/devel/qapi-code-gen.txt b/docs/devel/qapi-code-gen.txt index 4a41e36a75..c6438c6aa9 100644 --- a/docs/devel/qapi-code-gen.txt +++ b/docs/devel/qapi-code-gen.txt @@ -617,8 +617,8 @@ pitfalls are: Since the command handler may assume coroutine context, any callers other than the QMP dispatcher must also call it in coroutine context. -In particular, HMP commands calling such a QMP command handler must -enter coroutine context before calling the handler. +In particular, HMP commands calling such a QMP command handler must be +marked .coroutine = true in hmp-commands.hx. It is an error to specify both 'coroutine': true and 'allow-oob': true for a command. We don't currently have a use case for both together and |