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qapi: Add a 'coroutine' flag for commands

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This patch adds a new 'coroutine' flag to QMP command definitions that
tells the QMP dispatcher that the command handler is safe to be run in a
coroutine.

The documentation of the new flag pretends that this flag is already
used as intended, which it isn't yet after this patch. We'll implement
this in another patch in this series.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201005155855.256490-9-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>
This commit is contained in:
Kevin Wolf 2020-10-05 17:58:49 +02:00 • committed by Markus Armbruster
parent e69ee454b5
commit 04f22362f1
15 changed files with 73 additions and 14 deletions
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10
scripts/qapi/commands.py
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@ -176,7 +176,8 @@ out:
return ret
def gen_register_command(name, success_response, allow_oob, allow_preconfig):
def gen_register_command(name, success_response, allow_oob, allow_preconfig,
coroutine):
options = []
if not success_response:
@ -185,6 +186,8 @@ def gen_register_command(name, success_response, allow_oob, allow_preconfig):
options += ['QCO_ALLOW_OOB']
if allow_preconfig:
options += ['QCO_ALLOW_PRECONFIG']
if coroutine:
options += ['QCO_COROUTINE']
if not options:
options = ['QCO_NO_OPTIONS']
@ -267,7 +270,7 @@ void %(c_prefix)sqmp_init_marshal(QmpCommandList *cmds);
def visit_command(self, name, info, ifcond, features,
arg_type, ret_type, gen, success_response, boxed,
allow_oob, allow_preconfig):
allow_oob, allow_preconfig, coroutine):
if not gen:
return
# FIXME: If T is a user-defined type, the user is responsible
@ -285,7 +288,8 @@ void %(c_prefix)sqmp_init_marshal(QmpCommandList *cmds);
self._genh.add(gen_marshal_decl(name))
self._genc.add(gen_marshal(name, arg_type, boxed, ret_type))
self._regy.add(gen_register_command(name, success_response,
allow_oob, allow_preconfig))
allow_oob, allow_preconfig,
coroutine))
def gen_commands(schema, output_dir, prefix):