From 3ee3152404a4436794234eafee3d7bbdf11aea1b Mon Sep 17 00:00:00 2001 From: Anthony Liguori Date: Mon, 5 Mar 2012 17:44:14 -0500 Subject: [PATCH 47/98] qapi: add code generation support for middle mode To get the ball rolling merging QAPI, this patch introduces a "middle mode" to the code generator. In middle mode, the code generator generates marshalling functions that are compatible with the current QMP server. We absolutely need to replace the current QMP server in order to support proper asynchronous commands but using a middle mode provides a middle-ground that lets us start converting commands in tree. Note that all of the commands have been converted already in my glib branch. Middle mode only exists until we finish merging them from my branch into the main tree. Signed-off-by: Anthony Liguori Signed-off-by: Luiz Capitulino (cherry picked from commit 776574d6417cf623fb071987cdd2c6bc13271dc2) Signed-off-by: Jeff Cody Signed-off-by: Michal Novotny --- qapi/qapi-types-core.h | 3 ++ scripts/qapi-commands.py | 81 +++++++++++++++++++++++++++++++++++++-------- scripts/qapi-types.py | 3 ++ scripts/qapi.py | 4 ++- 4 files changed, 75 insertions(+), 16 deletions(-) diff --git a/qapi/qapi-types-core.h b/qapi/qapi-types-core.h index a79bc2b..27e6be0 100644 --- a/qapi/qapi-types-core.h +++ b/qapi/qapi-types-core.h @@ -17,4 +17,7 @@ #include "qemu-common.h" #include "error.h" +/* FIXME this is temporary until we remove middle mode */ +#include "monitor.h" + #endif diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py index 9ad4c54..2776804 100644 --- a/scripts/qapi-commands.py +++ b/scripts/qapi-commands.py @@ -167,9 +167,10 @@ qmp_input_visitor_cleanup(mi); pop_indent() return ret.rstrip() -def gen_marshal_output(name, args, ret_type): +def gen_marshal_output(name, args, ret_type, middle_mode): if not ret_type: return "" + ret = mcgen(''' static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp) { @@ -188,16 +189,34 @@ static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_o qapi_dealloc_visitor_cleanup(md); } ''', - c_ret_type=c_type(ret_type), c_name=c_var(name), ret_type=ret_type) + c_ret_type=c_type(ret_type), c_name=c_var(name), + ret_type=ret_type) return ret -def gen_marshal_input(name, args, ret_type): +def gen_marshal_input_decl(name, args, ret_type, middle_mode): + if middle_mode: + return 'int qmp_marshal_input_%s(Monitor *mon, const QDict *qdict, QObject **ret)' % c_var(name) + else: + return 'static void qmp_marshal_input_%s(QDict *args, QObject **ret, Error **errp)' % c_var(name) + + + +def gen_marshal_input(name, args, ret_type, middle_mode): + hdr = gen_marshal_input_decl(name, args, ret_type, middle_mode) + ret = mcgen(''' -static void qmp_marshal_input_%(c_name)s(QDict *args, QObject **ret, Error **errp) +%(header)s { ''', - c_name=c_var(name)) + header=hdr) + + if middle_mode: + ret += mcgen(''' + Error *local_err = NULL; + Error **errp = &local_err; + QDict *args = (QDict *)qdict; +''') if ret_type: if c_type(ret_type).endswith("*"): @@ -220,6 +239,10 @@ static void qmp_marshal_input_%(c_name)s(QDict *args, QObject **ret, Error **err visitor_input_containers_decl=gen_visitor_input_containers_decl(args), visitor_input_vars_decl=gen_visitor_input_vars_decl(args), visitor_input_block=gen_visitor_input_block(args, "QOBJECT(args)")) + else: + ret += mcgen(''' + (void)args; +''') ret += mcgen(''' if (error_is_set(errp)) { @@ -234,10 +257,29 @@ out: ''') ret += mcgen(''' %(visitor_input_block_cleanup)s +''', + visitor_input_block_cleanup=gen_visitor_input_block(args, None, + dealloc=True)) + + if middle_mode: + ret += mcgen(''' + + if (local_err) { + qerror_report_err(local_err); + error_free(local_err); + return -1; + } + return 0; +''') + else: + ret += mcgen(''' return; +''') + + ret += mcgen(''' } -''', - visitor_input_block_cleanup=gen_visitor_input_block(args, None, dealloc=True)) +''') + return ret def gen_registry(commands): @@ -284,7 +326,7 @@ def gen_command_decl_prologue(header, guard, prefix=""): #include "error.h" ''', - header=basename(h_file), guard=guardname(h_file), prefix=prefix) + header=basename(header), guard=guardname(header), prefix=prefix) return ret def gen_command_def_prologue(prefix="", proxy=False): @@ -317,11 +359,11 @@ def gen_command_def_prologue(prefix="", proxy=False): prefix=prefix) if not proxy: ret += '#include "%sqmp-commands.h"' % prefix - return ret + "\n" + return ret + "\n\n" try: - opts, args = getopt.gnu_getopt(sys.argv[1:], "p:o:", ["prefix=", "output-dir=", "type="]) + opts, args = getopt.gnu_getopt(sys.argv[1:], "p:o:m", ["prefix=", "output-dir=", "type=", "middle"]) except getopt.GetoptError, err: print str(err) sys.exit(1) @@ -331,6 +373,7 @@ prefix = "" dispatch_type = "sync" c_file = 'qmp-marshal.c' h_file = 'qmp-commands.h' +middle_mode = False for o, a in opts: if o in ("-p", "--prefix"): @@ -339,6 +382,8 @@ for o, a in opts: output_dir = a + "/" elif o in ("-t", "--type"): dispatch_type = a + elif o in ("-m", "--middle"): + middle_mode = True c_file = output_dir + prefix + c_file h_file = output_dir + prefix + h_file @@ -370,14 +415,20 @@ if dispatch_type == "sync": ret = generate_command_decl(cmd['command'], arglist, ret_type) + "\n" fdecl.write(ret) if ret_type: - ret = gen_marshal_output(cmd['command'], arglist, ret_type) + "\n" + ret = gen_marshal_output(cmd['command'], arglist, ret_type, middle_mode) + "\n" fdef.write(ret) - ret = gen_marshal_input(cmd['command'], arglist, ret_type) + "\n" + + if middle_mode: + fdecl.write('%s;\n' % gen_marshal_input_decl(cmd['command'], arglist, ret_type, middle_mode)) + + ret = gen_marshal_input(cmd['command'], arglist, ret_type, middle_mode) + "\n" fdef.write(ret) - fdecl.write("\n#endif"); - ret = gen_registry(commands) - fdef.write(ret) + fdecl.write("\n#endif\n"); + + if not middle_mode: + ret = gen_registry(commands) + fdef.write(ret) fdef.flush() fdef.close() diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py index cece325..fc0f7af 100644 --- a/scripts/qapi-types.py +++ b/scripts/qapi-types.py @@ -268,3 +268,6 @@ fdecl.write(''' fdecl.flush() fdecl.close() + +fdef.flush() +fdef.close() diff --git a/scripts/qapi.py b/scripts/qapi.py index 56af232..5299976 100644 --- a/scripts/qapi.py +++ b/scripts/qapi.py @@ -200,4 +200,6 @@ def basename(filename): return filename.split("/")[-1] def guardname(filename): - return filename.replace("/", "_").replace("-", "_").split(".")[0].upper() + if filename.startswith('./'): + filename = filename[2:] + return filename.replace("/", "_").replace("-", "_").split(".")[0].upper() + '_H' -- 1.7.7.6