unicorn/qemu/qapi/qapi-dealloc-visitor.c
Markus Armbruster 06668850e3
include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.

Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.

Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.

This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.

Backports commit da34e65cb4025728566d6504a99916f6e7e1dd6a from qemu
2018-02-21 23:08:18 -05:00

213 lines
5.2 KiB
C

/*
* Dealloc Visitor
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Michael Roth <mdroth@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/dealloc-visitor.h"
#include "qemu/queue.h"
#include "qemu-common.h"
#include "qapi/qmp/types.h"
#include "qapi/visitor-impl.h"
typedef struct StackEntry
{
void *value;
bool is_list_head;
QTAILQ_ENTRY(StackEntry) node;
} StackEntry;
struct QapiDeallocVisitor
{
Visitor visitor;
QTAILQ_HEAD(, StackEntry) stack;
bool is_list_head;
};
static QapiDeallocVisitor *to_qov(Visitor *v)
{
return container_of(v, QapiDeallocVisitor, visitor);
}
static void qapi_dealloc_push(QapiDeallocVisitor *qov, void *value)
{
StackEntry *e = g_malloc0(sizeof(*e));
e->value = value;
/* see if we're just pushing a list head tracker */
if (value == NULL) {
e->is_list_head = true;
}
QTAILQ_INSERT_HEAD(&qov->stack, e, node);
}
static void *qapi_dealloc_pop(QapiDeallocVisitor *qov)
{
StackEntry *e = QTAILQ_FIRST(&qov->stack);
QObject *value;
QTAILQ_REMOVE(&qov->stack, e, node);
value = e->value;
g_free(e);
return value;
}
static void qapi_dealloc_start_struct(Visitor *v, const char *name, void **obj,
size_t unused, Error **errp)
{
QapiDeallocVisitor *qov = to_qov(v);
qapi_dealloc_push(qov, obj);
}
static void qapi_dealloc_end_struct(Visitor *v, Error **errp)
{
QapiDeallocVisitor *qov = to_qov(v);
void **obj = qapi_dealloc_pop(qov);
if (obj) {
g_free(*obj);
}
}
static void qapi_dealloc_start_implicit_struct(Visitor *v,
void **obj,
size_t size,
Error **errp)
{
QapiDeallocVisitor *qov = to_qov(v);
qapi_dealloc_push(qov, obj);
}
static void qapi_dealloc_end_implicit_struct(Visitor *v)
{
QapiDeallocVisitor *qov = to_qov(v);
void **obj = qapi_dealloc_pop(qov);
if (obj) {
g_free(*obj);
}
}
static void qapi_dealloc_start_list(Visitor *v, const char *name, Error **errp)
{
QapiDeallocVisitor *qov = to_qov(v);
qapi_dealloc_push(qov, NULL);
}
static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList **listp)
{
GenericList *list = *listp;
QapiDeallocVisitor *qov = to_qov(v);
StackEntry *e = QTAILQ_FIRST(&qov->stack);
if (e && e->is_list_head) {
e->is_list_head = false;
return list;
}
if (list) {
list = list->next;
g_free(*listp);
return list;
}
return NULL;
}
static void qapi_dealloc_end_list(Visitor *v)
{
QapiDeallocVisitor *qov = to_qov(v);
void *obj = qapi_dealloc_pop(qov);
assert(obj == NULL); /* should've been list head tracker with no payload */
}
static void qapi_dealloc_type_str(Visitor *v, const char *name, char **obj,
Error **errp)
{
if (obj) {
g_free(*obj);
}
}
static void qapi_dealloc_type_int64(Visitor *v, const char *name, int64_t *obj,
Error **errp)
{
}
static void qapi_dealloc_type_uint64(Visitor *v, const char *name,
uint64_t *obj, Error **errp)
{
}
static void qapi_dealloc_type_bool(Visitor *v, const char *name, bool *obj,
Error **errp)
{
}
static void qapi_dealloc_type_number(Visitor *v, const char *name, double *obj,
Error **errp)
{
}
static void qapi_dealloc_type_anything(Visitor *v, const char *name,
QObject **obj, Error **errp)
{
if (obj) {
qobject_decref(*obj);
}
}
static void qapi_dealloc_type_size(Visitor *v, const char *name, uint64_t *obj,
Error **errp)
{
}
static void qapi_dealloc_type_enum(Visitor *v, const char *name, int *obj,
const char * const strings[], Error **errp)
{
}
Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v)
{
return &v->visitor;
}
void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *v)
{
g_free(v);
}
QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
{
QapiDeallocVisitor *v;
v = g_malloc0(sizeof(*v));
v->visitor.start_struct = qapi_dealloc_start_struct;
v->visitor.end_struct = qapi_dealloc_end_struct;
v->visitor.start_implicit_struct = qapi_dealloc_start_implicit_struct;
v->visitor.end_implicit_struct = qapi_dealloc_end_implicit_struct;
v->visitor.start_list = qapi_dealloc_start_list;
v->visitor.next_list = qapi_dealloc_next_list;
v->visitor.end_list = qapi_dealloc_end_list;
v->visitor.type_enum = qapi_dealloc_type_enum;
v->visitor.type_int64 = qapi_dealloc_type_int64;
v->visitor.type_uint64 = qapi_dealloc_type_uint64;
v->visitor.type_bool = qapi_dealloc_type_bool;
v->visitor.type_str = qapi_dealloc_type_str;
v->visitor.type_number = qapi_dealloc_type_number;
v->visitor.type_any = qapi_dealloc_type_anything;
v->visitor.type_size = qapi_dealloc_type_size;
QTAILQ_INIT(&v->stack);
return v;
}