From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48965) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Whwg9-0002A0-7p for qemu-devel@nongnu.org; Wed, 07 May 2014 03:54:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Whwfz-0006gN-6W for qemu-devel@nongnu.org; Wed, 07 May 2014 03:54:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61014) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Whwfy-0006g1-VO for qemu-devel@nongnu.org; Wed, 07 May 2014 03:54:03 -0400 From: Markus Armbruster Date: Wed, 7 May 2014 09:53:44 +0200 Message-Id: <1399449234-28501-3-git-send-email-armbru@redhat.com> In-Reply-To: <1399449234-28501-1-git-send-email-armbru@redhat.com> References: <1399449234-28501-1-git-send-email-armbru@redhat.com> Subject: [Qemu-devel] [PATCH v2 02/12] qapi: Normalize marshalling's visitor initialization and cleanup List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: mdroth@linux.vnet.ibm.com, lcapitulino@redhat.com, pbonzini@redhat.com, akong@redhat.com, vilanova@ac.upc.edu Input and output marshalling functions do it differently. Change them to work the same: initialize the I/O visitor, use it, clean it up, initialize the dealloc visitor, use it, clean it up. This delays dealloc visitor initialization in output marshalling functions, and input visitor cleanup in input marshalling functions. No functional change, but the latter will be convenient when I change the error handling. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- docs/qapi-code-gen.txt | 8 ++++---- scripts/qapi-commands.py | 27 ++++++++++++--------------- 2 files changed, 16 insertions(+), 19 deletions(-) diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt index 923565e..ac951ef 100644 --- a/docs/qapi-code-gen.txt +++ b/docs/qapi-code-gen.txt @@ -399,8 +399,8 @@ Example: static void qmp_marshal_output_my_command(UserDefOne * ret_in, QObject **ret_out, Error **errp) { - QapiDeallocVisitor *md = qapi_dealloc_visitor_new(); QmpOutputVisitor *mo = qmp_output_visitor_new(); + QapiDeallocVisitor *md; Visitor *v; v = qmp_output_get_visitor(mo); @@ -409,6 +409,7 @@ Example: *ret_out = qmp_output_get_qobject(mo); } qmp_output_visitor_cleanup(mo); + md = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(md); visit_type_UserDefOne(v, &ret_in, "unused", NULL); qapi_dealloc_visitor_cleanup(md); @@ -417,15 +418,13 @@ Example: static void qmp_marshal_input_my_command(QDict *args, QObject **ret, Error **errp) { UserDefOne * retval = NULL; - QmpInputVisitor *mi; + QmpInputVisitor *mi = qmp_input_visitor_new_strict(QOBJECT(args)); QapiDeallocVisitor *md; Visitor *v; UserDefOne * arg1 = NULL; - mi = qmp_input_visitor_new_strict(QOBJECT(args)); v = qmp_input_get_visitor(mi); visit_type_UserDefOne(v, &arg1, "arg1", errp); - qmp_input_visitor_cleanup(mi); if (error_is_set(errp)) { goto out; @@ -436,6 +435,7 @@ Example: } out: + qmp_input_visitor_cleanup(mi); md = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(md); visit_type_UserDefOne(v, &arg1, "arg1", NULL); diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py index 9734ab0..f56cc1c 100644 --- a/scripts/qapi-commands.py +++ b/scripts/qapi-commands.py @@ -69,16 +69,17 @@ def gen_marshal_output_call(name, ret_type): return "" return "qmp_marshal_output_%s(retval, ret, errp);" % c_fun(name) -def gen_visitor_input_containers_decl(args): +def gen_visitor_input_containers_decl(args, obj): ret = "" push_indent() if len(args) > 0: ret += mcgen(''' -QmpInputVisitor *mi; +QmpInputVisitor *mi = qmp_input_visitor_new_strict(%(obj)s); QapiDeallocVisitor *md; Visitor *v; -''') +''', + obj=obj) pop_indent() return ret.rstrip() @@ -106,7 +107,7 @@ bool has_%(argname)s = false; pop_indent() return ret.rstrip() -def gen_visitor_input_block(args, obj, dealloc=False): +def gen_visitor_input_block(args, dealloc=False): ret = "" errparg = 'errp' @@ -118,15 +119,14 @@ def gen_visitor_input_block(args, obj, dealloc=False): if dealloc: errparg = 'NULL' ret += mcgen(''' +qmp_input_visitor_cleanup(mi); md = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(md); ''') else: ret += mcgen(''' -mi = qmp_input_visitor_new_strict(%(obj)s); v = qmp_input_get_visitor(mi); -''', - obj=obj) +''') for argname, argtype, optional, structured in parse_args(args): if optional: @@ -152,10 +152,6 @@ visit_end_optional(v, %(errp)s); ret += mcgen(''' qapi_dealloc_visitor_cleanup(md); ''') - else: - ret += mcgen(''' -qmp_input_visitor_cleanup(mi); -''') pop_indent() return ret.rstrip() @@ -166,8 +162,8 @@ def gen_marshal_output(name, args, ret_type, middle_mode): ret = mcgen(''' static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_out, Error **errp) { - QapiDeallocVisitor *md = qapi_dealloc_visitor_new(); QmpOutputVisitor *mo = qmp_output_visitor_new(); + QapiDeallocVisitor *md; Visitor *v; v = qmp_output_get_visitor(mo); @@ -176,6 +172,7 @@ static void qmp_marshal_output_%(c_name)s(%(c_ret_type)s ret_in, QObject **ret_o *ret_out = qmp_output_get_qobject(mo); } qmp_output_visitor_cleanup(mo); + md = qapi_dealloc_visitor_new(); v = qapi_dealloc_get_visitor(md); %(visitor)s(v, &ret_in, "unused", NULL); qapi_dealloc_visitor_cleanup(md); @@ -228,9 +225,9 @@ def gen_marshal_input(name, args, ret_type, middle_mode): %(visitor_input_block)s ''', - visitor_input_containers_decl=gen_visitor_input_containers_decl(args), + visitor_input_containers_decl=gen_visitor_input_containers_decl(args, "QOBJECT(args)"), visitor_input_vars_decl=gen_visitor_input_vars_decl(args), - visitor_input_block=gen_visitor_input_block(args, "QOBJECT(args)")) + visitor_input_block=gen_visitor_input_block(args)) else: ret += mcgen(''' (void)args; @@ -250,7 +247,7 @@ out: ret += mcgen(''' %(visitor_input_block_cleanup)s ''', - visitor_input_block_cleanup=gen_visitor_input_block(args, None, + visitor_input_block_cleanup=gen_visitor_input_block(args, dealloc=True)) if middle_mode: -- 1.8.1.4