aboutsummaryrefslogtreecommitdiff
path: root/vl.c
diff options
context:
space:
mode:
authorMarkus Armbruster <armbru@redhat.com>2017-03-03 13:32:24 +0100
committerMarkus Armbruster <armbru@redhat.com>2017-03-05 09:02:10 +0100
commit05875687806b71ae980ca59a46777b742b20ac06 (patch)
tree383cdb241886b4e9309f25aa997866161d1908bf /vl.c
parentf66e7ac88c18be9f52add5e1a94de1fc6db3eefb (diff)
downloadqemu-05875687806b71ae980ca59a46777b742b20ac06.zip
qemu-05875687806b71ae980ca59a46777b742b20ac06.tar.gz
qemu-05875687806b71ae980ca59a46777b742b20ac06.tar.bz2
qmp: Dumb down how we run QMP command registration
The way we get QMP commands registered is high tech: * qapi-commands.py generates qmp_init_marshal() that does the actual work * it also generates the magic to register it as a MODULE_INIT_QAPI function, so it runs when someone calls module_call_init(MODULE_INIT_QAPI) * main() calls module_call_init() QEMU needs to register a few non-qapified commands. Same high tech works: monitor.c has its own qmp_init_marshal() along with the magic to make it run in module_call_init(MODULE_INIT_QAPI). QEMU also needs to unregister commands that are not wanted in this build's configuration (commit 5032a16). Simple enough: qmp_unregister_commands_hack(). The difficulty is to make it run after the generated qmp_init_marshal(). We can't simply run it in monitor.c's qmp_init_marshal(), because the order in which the registered functions run is indeterminate. So qmp_init_marshal() registers qmp_unregister_commands_hack() separately. Since registering *appends* to the list of registered functions, this will make it run after all the functions that have been registered already. I suspect it takes a long and expensive computer science education to not find this silly. Dumb it down as follows: * Drop MODULE_INIT_QAPI entirely * Give the generated qmp_init_marshal() external linkage. * Call it instead of module_call_init(MODULE_INIT_QAPI) * Except in QEMU proper, call new monitor_init_qmp_commands() that in turn calls the generated qmp_init_marshal(), registers the additional commands and unregisters the unwanted ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1488544368-30622-5-git-send-email-armbru@redhat.com>
Diffstat (limited to 'vl.c')
-rw-r--r--vl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/vl.c b/vl.c
index 16a3b5e..71b75ef 100644
--- a/vl.c
+++ b/vl.c
@@ -2988,7 +2988,7 @@ int main(int argc, char **argv, char **envp)
qemu_init_exec_dir(argv[0]);
module_call_init(MODULE_INIT_QOM);
- module_call_init(MODULE_INIT_QAPI);
+ monitor_init_qmp_commands();
qemu_add_opts(&qemu_drive_opts);
qemu_add_drive_opts(&qemu_legacy_drive_opts);