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ddf2190896
Rather than storing a base class as a pointer to a box, just store the fields of that base class in the same order, so that a child struct can be directly cast to its parent. This gives less malloc overhead, less pointer dereferencing, and even less generated code. Compare to the earlier commit 1e6c1616a "qapi: Generate a nicer struct for flat unions" (although that patch had fewer places to change, as less of qemu was directly using qapi structs for flat unions). It also allows us to turn on automatic type-safe wrappers for upcasting to the base class of a struct. Changes to the generated code look like this in qapi-types.h: | struct SpiceChannel { |- SpiceBasicInfo *base; |+ /* Members inherited from SpiceBasicInfo: */ |+ char *host; |+ char *port; |+ NetworkAddressFamily family; |+ /* Own members: */ | int64_t connection_id; as well as additional upcast functions like qapi_SpiceChannel_base(). Meanwhile, changes to qapi-visit.c look like: | static void visit_type_SpiceChannel_fields(Visitor *v, SpiceChannel **obj, Error **errp) | { | Error *err = NULL; | |- visit_type_implicit_SpiceBasicInfo(v, &(*obj)->base, &err); |+ visit_type_SpiceBasicInfo_fields(v, (SpiceBasicInfo **)obj, &err); | if (err) { (the cast is necessary, since our upcast wrappers only deal with a single pointer, not pointer-to-pointer); plus the wholesale elimination of some now-unused visit_type_implicit_FOO() functions. Without boxing, the corner case of one empty struct having another empty struct as its base type now requires inserting a dummy member (previously, the 'Base *base' member sufficed). And now that we no longer consume a 'base' member in the generated C struct, we can delete the former negative struct-base-clash-base test. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1445898903-12082-11-git-send-email-eblake@redhat.com> [Commit message tweaked slightly] Signed-off-by: Markus Armbruster <armbru@redhat.com>
251 lines
7.4 KiB
C
251 lines
7.4 KiB
C
#include <glib.h>
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#include "qemu-common.h"
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#include "qapi/qmp/types.h"
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#include "test-qmp-commands.h"
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#include "qapi/qmp/dispatch.h"
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#include "qemu/module.h"
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#include "qapi/qmp-input-visitor.h"
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#include "tests/test-qapi-types.h"
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#include "tests/test-qapi-visit.h"
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void qmp_user_def_cmd(Error **errp)
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{
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}
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void qmp_user_def_cmd1(UserDefOne * ud1, Error **errp)
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{
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}
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UserDefTwo *qmp_user_def_cmd2(UserDefOne *ud1a,
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bool has_udb1, UserDefOne *ud1b,
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Error **errp)
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{
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UserDefTwo *ret;
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UserDefOne *ud1c = g_malloc0(sizeof(UserDefOne));
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UserDefOne *ud1d = g_malloc0(sizeof(UserDefOne));
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ud1c->string = strdup(ud1a->string);
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ud1c->integer = ud1a->integer;
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ud1d->string = strdup(has_udb1 ? ud1b->string : "blah0");
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ud1d->integer = has_udb1 ? ud1b->integer : 0;
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ret = g_new0(UserDefTwo, 1);
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ret->string0 = strdup("blah1");
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ret->dict1 = g_new0(UserDefTwoDict, 1);
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ret->dict1->string1 = strdup("blah2");
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ret->dict1->dict2 = g_new0(UserDefTwoDictDict, 1);
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ret->dict1->dict2->userdef = ud1c;
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ret->dict1->dict2->string = strdup("blah3");
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ret->dict1->dict3 = g_new0(UserDefTwoDictDict, 1);
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ret->dict1->has_dict3 = true;
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ret->dict1->dict3->userdef = ud1d;
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ret->dict1->dict3->string = strdup("blah4");
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return ret;
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}
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int64_t qmp_guest_get_time(int64_t a, bool has_b, int64_t b, Error **errp)
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{
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return a + (has_b ? b : 0);
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}
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QObject *qmp_guest_sync(QObject *arg, Error **errp)
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{
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return arg;
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}
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__org_qemu_x_Union1 *qmp___org_qemu_x_command(__org_qemu_x_EnumList *a,
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__org_qemu_x_StructList *b,
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__org_qemu_x_Union2 *c,
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__org_qemu_x_Alt *d,
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Error **errp)
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{
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__org_qemu_x_Union1 *ret = g_new0(__org_qemu_x_Union1, 1);
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ret->kind = ORG_QEMU_X_UNION1_KIND___ORG_QEMU_X_BRANCH;
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ret->__org_qemu_x_branch = strdup("blah1");
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return ret;
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}
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/* test commands with no input and no return value */
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static void test_dispatch_cmd(void)
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{
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QDict *req = qdict_new();
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QObject *resp;
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qdict_put_obj(req, "execute", QOBJECT(qstring_from_str("user_def_cmd")));
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resp = qmp_dispatch(QOBJECT(req));
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assert(resp != NULL);
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assert(!qdict_haskey(qobject_to_qdict(resp), "error"));
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qobject_decref(resp);
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QDECREF(req);
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}
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/* test commands that return an error due to invalid parameters */
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static void test_dispatch_cmd_error(void)
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{
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QDict *req = qdict_new();
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QObject *resp;
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qdict_put_obj(req, "execute", QOBJECT(qstring_from_str("user_def_cmd2")));
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resp = qmp_dispatch(QOBJECT(req));
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assert(resp != NULL);
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assert(qdict_haskey(qobject_to_qdict(resp), "error"));
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qobject_decref(resp);
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QDECREF(req);
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}
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static QObject *test_qmp_dispatch(QDict *req)
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{
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QObject *resp_obj;
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QDict *resp;
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QObject *ret;
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resp_obj = qmp_dispatch(QOBJECT(req));
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assert(resp_obj);
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resp = qobject_to_qdict(resp_obj);
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assert(resp && !qdict_haskey(resp, "error"));
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ret = qdict_get(resp, "return");
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assert(ret);
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qobject_incref(ret);
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qobject_decref(resp_obj);
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return ret;
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}
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/* test commands that involve both input parameters and return values */
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static void test_dispatch_cmd_io(void)
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{
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QDict *req = qdict_new();
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QDict *args = qdict_new();
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QDict *args3 = qdict_new();
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QDict *ud1a = qdict_new();
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QDict *ud1b = qdict_new();
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QDict *ret, *ret_dict, *ret_dict_dict, *ret_dict_dict_userdef;
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QDict *ret_dict_dict2, *ret_dict_dict2_userdef;
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QInt *ret3;
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qdict_put_obj(ud1a, "integer", QOBJECT(qint_from_int(42)));
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qdict_put_obj(ud1a, "string", QOBJECT(qstring_from_str("hello")));
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qdict_put_obj(ud1b, "integer", QOBJECT(qint_from_int(422)));
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qdict_put_obj(ud1b, "string", QOBJECT(qstring_from_str("hello2")));
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qdict_put_obj(args, "ud1a", QOBJECT(ud1a));
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qdict_put_obj(args, "ud1b", QOBJECT(ud1b));
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qdict_put_obj(req, "arguments", QOBJECT(args));
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qdict_put_obj(req, "execute", QOBJECT(qstring_from_str("user_def_cmd2")));
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ret = qobject_to_qdict(test_qmp_dispatch(req));
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assert(!strcmp(qdict_get_str(ret, "string0"), "blah1"));
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ret_dict = qdict_get_qdict(ret, "dict1");
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assert(!strcmp(qdict_get_str(ret_dict, "string1"), "blah2"));
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ret_dict_dict = qdict_get_qdict(ret_dict, "dict2");
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ret_dict_dict_userdef = qdict_get_qdict(ret_dict_dict, "userdef");
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assert(qdict_get_int(ret_dict_dict_userdef, "integer") == 42);
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assert(!strcmp(qdict_get_str(ret_dict_dict_userdef, "string"), "hello"));
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assert(!strcmp(qdict_get_str(ret_dict_dict, "string"), "blah3"));
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ret_dict_dict2 = qdict_get_qdict(ret_dict, "dict3");
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ret_dict_dict2_userdef = qdict_get_qdict(ret_dict_dict2, "userdef");
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assert(qdict_get_int(ret_dict_dict2_userdef, "integer") == 422);
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assert(!strcmp(qdict_get_str(ret_dict_dict2_userdef, "string"), "hello2"));
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assert(!strcmp(qdict_get_str(ret_dict_dict2, "string"), "blah4"));
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QDECREF(ret);
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qdict_put(args3, "a", qint_from_int(66));
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qdict_put(req, "arguments", args3);
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qdict_put(req, "execute", qstring_from_str("guest-get-time"));
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ret3 = qobject_to_qint(test_qmp_dispatch(req));
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assert(qint_get_int(ret3) == 66);
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QDECREF(ret3);
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QDECREF(req);
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}
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/* test generated dealloc functions for generated types */
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static void test_dealloc_types(void)
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{
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UserDefOne *ud1test, *ud1a, *ud1b;
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UserDefOneList *ud1list;
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ud1test = g_malloc0(sizeof(UserDefOne));
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ud1test->integer = 42;
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ud1test->string = g_strdup("hi there 42");
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qapi_free_UserDefOne(ud1test);
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ud1a = g_malloc0(sizeof(UserDefOne));
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ud1a->integer = 43;
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ud1a->string = g_strdup("hi there 43");
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ud1b = g_malloc0(sizeof(UserDefOne));
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ud1b->integer = 44;
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ud1b->string = g_strdup("hi there 44");
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ud1list = g_malloc0(sizeof(UserDefOneList));
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ud1list->value = ud1a;
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ud1list->next = g_malloc0(sizeof(UserDefOneList));
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ud1list->next->value = ud1b;
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qapi_free_UserDefOneList(ud1list);
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}
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/* test generated deallocation on an object whose construction was prematurely
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* terminated due to an error */
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static void test_dealloc_partial(void)
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{
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static const char text[] = "don't leak me";
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UserDefTwo *ud2 = NULL;
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Error *err = NULL;
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/* create partial object */
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{
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QDict *ud2_dict;
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QmpInputVisitor *qiv;
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ud2_dict = qdict_new();
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qdict_put_obj(ud2_dict, "string0", QOBJECT(qstring_from_str(text)));
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qiv = qmp_input_visitor_new(QOBJECT(ud2_dict));
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visit_type_UserDefTwo(qmp_input_get_visitor(qiv), &ud2, NULL, &err);
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qmp_input_visitor_cleanup(qiv);
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QDECREF(ud2_dict);
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}
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/* verify partial success */
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assert(ud2 != NULL);
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assert(ud2->string0 != NULL);
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assert(strcmp(ud2->string0, text) == 0);
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assert(ud2->dict1 == NULL);
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/* confirm & release construction error */
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assert(err != NULL);
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error_free(err);
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/* tear down partial object */
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qapi_free_UserDefTwo(ud2);
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/0.15/dispatch_cmd", test_dispatch_cmd);
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g_test_add_func("/0.15/dispatch_cmd_error", test_dispatch_cmd_error);
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g_test_add_func("/0.15/dispatch_cmd_io", test_dispatch_cmd_io);
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g_test_add_func("/0.15/dealloc_types", test_dealloc_types);
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g_test_add_func("/0.15/dealloc_partial", test_dealloc_partial);
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module_call_init(MODULE_INIT_QAPI);
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g_test_run();
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return 0;
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}
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