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[Qemu-devel] [PATCH v2 25/29] docs/devel/writing-qmp-commands: Update fo
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH v2 25/29] docs/devel/writing-qmp-commands: Update for modular QAPI |
Date: |
Sun, 11 Feb 2018 10:36:03 +0100 |
With modular code generation, putting stuff right into
qapi-schema.json is a bad idea. Update writing-qmp-commands.txt
accordingly.
Signed-off-by: Markus Armbruster <address@hidden>
---
docs/devel/writing-qmp-commands.txt | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/docs/devel/writing-qmp-commands.txt
b/docs/devel/writing-qmp-commands.txt
index 4f5b24c0c4..776b3b41ca 100644
--- a/docs/devel/writing-qmp-commands.txt
+++ b/docs/devel/writing-qmp-commands.txt
@@ -15,8 +15,8 @@ start with docs/interop/qmp-intro.txt.
Generally speaking, the following steps should be taken in order to write a
new QMP command.
-1. Write the command's and type(s) specification in the QAPI schema file
- (qapi-schema.json in the root source directory)
+1. Define the command and any types it needs in the appropriate QAPI
+ schema module.
2. Write the QMP command itself, which is a regular C function. Preferably,
the command should be exported by some QEMU subsystem. But it can also be
@@ -88,8 +88,9 @@ command carries some meaningful action in QEMU but here it
will just print
Our command will be called "hello-world". It takes no arguments, nor does it
return any data.
-The first step is to add the following line to the bottom of the
-qapi-schema.json file:
+The first step is defining the command in the appropriate QAPI schema
+module. We pick module qapi/misc.json, and add the following line at
+the bottom:
{ 'command': 'hello-world' }
@@ -245,7 +246,7 @@ This is very important. No QMP command will be accepted in
QEMU without proper
documentation.
There are many examples of such documentation in the schema file already, but
-here goes "hello-world"'s new entry for the qapi-schema.json file:
+here goes "hello-world"'s new entry for qapi/misc.json:
##
# @hello-world
@@ -425,8 +426,7 @@ There are a number of things to be noticed:
allocated by the implementation. This is so because the QAPI also generates
a function to free its types and it cannot distinguish between dynamically
or statically allocated strings
-6. You have to include the "qmp-commands.h" header file in qemu-timer.c,
- otherwise qemu won't build
+6. You have to include "qapi/qmp-commands-misc.h" in qemu-timer.c
Time to test the new command. Build qemu, run it as described in the "Testing"
section and try this:
--
2.13.6
- [Qemu-devel] [PATCH v2 00/29] Modularize generated QAPI code, Markus Armbruster, 2018/02/11
- [Qemu-devel] [PATCH v2 12/29] qapi/common: Eliminate QAPISchema.exprs, Markus Armbruster, 2018/02/11
- [Qemu-devel] [PATCH v2 04/29] qapi: Rename variable holding the QAPISchemaGenFOOVisitor, Markus Armbruster, 2018/02/11
- [Qemu-devel] [PATCH v2 21/29] qapi/common: Fix guardname() for funny filenames, Markus Armbruster, 2018/02/11
- [Qemu-devel] [PATCH v2 25/29] docs/devel/writing-qmp-commands: Update for modular QAPI,
Markus Armbruster <=
- [Qemu-devel] [PATCH v2 03/29] qapi: Generate up-to-date copyright notice, Markus Armbruster, 2018/02/11
- [Qemu-devel] [PATCH v2 01/29] Include qapi/qmp/qerror.h exactly where needed, Markus Armbruster, 2018/02/11
- [Qemu-devel] [PATCH v2 10/29] qapi: Touch generated files only when they change, Markus Armbruster, 2018/02/11