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[PULL 29/33] migration: Replace migration's JSON writer by the general o
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From: |
Markus Armbruster |
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Subject: |
[PULL 29/33] migration: Replace migration's JSON writer by the general one |
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Date: |
Sat, 19 Dec 2020 11:55:28 +0100 |
Commit 8118f0950f "migration: Append JSON description of migration
stream" needs a JSON writer. The existing qobject_to_json() wasn't a
good fit, because it requires building a QObject to convert. Instead,
migration got its very own JSON writer, in commit 190c882ce2 "QJSON:
Add JSON writer". It tacitly limits numbers to int64_t, and strings
contents to characters that don't need escaping, unlike
qobject_to_json().
The previous commit factored the JSON writer out of qobject_to_json().
Replace migration's JSON writer by it.
Cc: Juan Quintela <quintela@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-17-armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
include/migration/vmstate.h | 7 +-
include/qapi/qmp/json-writer.h | 2 -
include/qemu/typedefs.h | 4 +-
migration/qjson.h | 29 ---------
hw/display/virtio-gpu.c | 2 +-
hw/intc/s390_flic_kvm.c | 2 +-
hw/nvram/eeprom93xx.c | 2 +-
hw/nvram/fw_cfg.c | 2 +-
hw/pci/msix.c | 2 +-
hw/pci/pci.c | 4 +-
hw/pci/shpc.c | 2 +-
hw/rtc/twl92230.c | 2 +-
hw/scsi/scsi-bus.c | 2 +-
hw/usb/redirect.c | 7 +-
hw/virtio/virtio.c | 4 +-
migration/qjson.c | 114 ---------------------------------
migration/savevm.c | 53 +++++++--------
migration/vmstate-types.c | 38 +++++------
migration/vmstate.c | 52 +++++++--------
target/alpha/machine.c | 2 +-
target/arm/machine.c | 6 +-
target/avr/machine.c | 4 +-
target/hppa/machine.c | 4 +-
target/microblaze/machine.c | 2 +-
target/mips/machine.c | 4 +-
target/openrisc/machine.c | 2 +-
target/ppc/machine.c | 10 +--
target/sparc/machine.c | 2 +-
migration/meson.build | 1 -
29 files changed, 114 insertions(+), 253 deletions(-)
delete mode 100644 migration/qjson.h
delete mode 100644 migration/qjson.c
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index 4d71dc8fba..075ee80096 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -43,7 +43,7 @@ struct VMStateInfo {
const char *name;
int (*get)(QEMUFile *f, void *pv, size_t size, const VMStateField *field);
int (*put)(QEMUFile *f, void *pv, size_t size, const VMStateField *field,
- QJSON *vmdesc);
+ JSONWriter *vmdesc);
};
enum VMStateFlags {
@@ -1169,9 +1169,10 @@ extern const VMStateInfo vmstate_info_qlist;
int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, int version_id);
int vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, QJSON *vmdesc);
+ void *opaque, JSONWriter *vmdesc);
int vmstate_save_state_v(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, QJSON *vmdesc, int version_id);
+ void *opaque, JSONWriter *vmdesc,
+ int version_id);
bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque);
diff --git a/include/qapi/qmp/json-writer.h b/include/qapi/qmp/json-writer.h
index 708d129018..b70ba64077 100644
--- a/include/qapi/qmp/json-writer.h
+++ b/include/qapi/qmp/json-writer.h
@@ -14,8 +14,6 @@
#ifndef JSON_WRITER_H
#define JSON_WRITER_H
-typedef struct JSONWriter JSONWriter;
-
JSONWriter *json_writer_new(bool pretty);
const char *json_writer_get(JSONWriter *);
GString *json_writer_get_and_free(JSONWriter *);
diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
index 6281eae3b5..976b529dfb 100644
--- a/include/qemu/typedefs.h
+++ b/include/qemu/typedefs.h
@@ -57,8 +57,8 @@ typedef struct IOMMUMemoryRegion IOMMUMemoryRegion;
typedef struct ISABus ISABus;
typedef struct ISADevice ISADevice;
typedef struct IsaDma IsaDma;
+typedef struct JSONWriter JSONWriter;
typedef struct MACAddr MACAddr;
-typedef struct ReservedRegion ReservedRegion;
typedef struct MachineClass MachineClass;
typedef struct MachineState MachineState;
typedef struct MemoryListener MemoryListener;
@@ -107,7 +107,6 @@ typedef struct QEMUSGList QEMUSGList;
typedef struct QemuSpin QemuSpin;
typedef struct QEMUTimer QEMUTimer;
typedef struct QEMUTimerListGroup QEMUTimerListGroup;
-typedef struct QJSON QJSON;
typedef struct QList QList;
typedef struct QNull QNull;
typedef struct QNum QNum;
@@ -115,6 +114,7 @@ typedef struct QObject QObject;
typedef struct QString QString;
typedef struct RAMBlock RAMBlock;
typedef struct Range Range;
+typedef struct ReservedRegion ReservedRegion;
typedef struct SavedIOTLB SavedIOTLB;
typedef struct SHPCDevice SHPCDevice;
typedef struct SSIBus SSIBus;
diff --git a/migration/qjson.h b/migration/qjson.h
deleted file mode 100644
index 1786bb5864..0000000000
--- a/migration/qjson.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * QEMU JSON writer
- *
- * Copyright Alexander Graf
- *
- * Authors:
- * Alexander Graf <agraf@suse.de>
- *
- * 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.
- *
- */
-#ifndef QEMU_QJSON_H
-#define QEMU_QJSON_H
-
-QJSON *qjson_new(void);
-void qjson_destroy(QJSON *json);
-void json_prop_str(QJSON *json, const char *name, const char *str);
-void json_prop_int(QJSON *json, const char *name, int64_t val);
-void json_end_array(QJSON *json);
-void json_start_array(QJSON *json, const char *name);
-void json_end_object(QJSON *json);
-void json_start_object(QJSON *json, const char *name);
-const char *qjson_get_str(QJSON *json);
-void qjson_finish(QJSON *json);
-
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(QJSON, qjson_destroy)
-
-#endif /* QEMU_QJSON_H */
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index f3b71fa9c7..0e833a462b 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -970,7 +970,7 @@ static const VMStateDescription vmstate_virtio_gpu_scanouts
= {
};
static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
VirtIOGPU *g = opaque;
struct virtio_gpu_simple_resource *res;
diff --git a/hw/intc/s390_flic_kvm.c b/hw/intc/s390_flic_kvm.c
index 35d91afa55..b3fb9f8395 100644
--- a/hw/intc/s390_flic_kvm.c
+++ b/hw/intc/s390_flic_kvm.c
@@ -386,7 +386,7 @@ static void kvm_s390_release_adapter_routes(S390FLICState
*fs,
* reached
*/
static int kvm_flic_save(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
KVMS390FLICState *flic = opaque;
int len = FLIC_SAVE_INITIAL_SIZE;
diff --git a/hw/nvram/eeprom93xx.c b/hw/nvram/eeprom93xx.c
index ca6f591c84..a1b9c78844 100644
--- a/hw/nvram/eeprom93xx.c
+++ b/hw/nvram/eeprom93xx.c
@@ -104,7 +104,7 @@ static int get_uint16_from_uint8(QEMUFile *f, void *pv,
size_t size,
}
static int put_unused(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
fprintf(stderr, "uint16_from_uint8 is used only for backwards
compatibility.\n");
fprintf(stderr, "Never should be used to write a new state.\n");
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index 44cb274a32..9b8dcca4ea 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -583,7 +583,7 @@ static int get_uint32_as_uint16(QEMUFile *f, void *pv,
size_t size,
}
static int put_unused(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
fprintf(stderr, "uint32_as_uint16 is only used for backward
compatibility.\n");
fprintf(stderr, "This functions shouldn't be called.\n");
diff --git a/hw/pci/msix.c b/hw/pci/msix.c
index 36491ee52b..ae9331cd0b 100644
--- a/hw/pci/msix.c
+++ b/hw/pci/msix.c
@@ -634,7 +634,7 @@ void msix_unset_vector_notifiers(PCIDevice *dev)
}
static int put_msix_state(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
msix_save(pv, f);
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index d4349ea577..dd589cd7c7 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -559,7 +559,7 @@ static int get_pci_config_device(QEMUFile *f, void *pv,
size_t size,
/* just put buffer */
static int put_pci_config_device(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
const uint8_t **v = pv;
assert(size == pci_config_size(container_of(pv, PCIDevice, config)));
@@ -597,7 +597,7 @@ static int get_pci_irq_state(QEMUFile *f, void *pv, size_t
size,
}
static int put_pci_irq_state(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int i;
PCIDevice *s = container_of(pv, PCIDevice, irq_state);
diff --git a/hw/pci/shpc.c b/hw/pci/shpc.c
index b00dce629c..4786a44996 100644
--- a/hw/pci/shpc.c
+++ b/hw/pci/shpc.c
@@ -699,7 +699,7 @@ void shpc_cap_write_config(PCIDevice *d, uint32_t addr,
uint32_t val, int l)
}
static int shpc_save(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
PCIDevice *d = container_of(pv, PCIDevice, shpc);
qemu_put_buffer(f, d->shpc->config, SHPC_SIZEOF(d));
diff --git a/hw/rtc/twl92230.c b/hw/rtc/twl92230.c
index f838913b37..d942908223 100644
--- a/hw/rtc/twl92230.c
+++ b/hw/rtc/twl92230.c
@@ -762,7 +762,7 @@ static int get_int32_as_uint16(QEMUFile *f, void *pv,
size_t size,
}
static int put_int32_as_uint16(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int *v = pv;
qemu_put_be16(f, *v);
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index edb5c3492a..c349fb7f2d 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -1638,7 +1638,7 @@ static char *scsibus_get_fw_dev_path(DeviceState *dev)
/* SCSI request list. For simplicity, pv points to the whole device */
static int put_scsi_requests(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
SCSIDevice *s = pv;
SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, s->qdev.parent_bus);
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index 3238de6bb8..4ca7d47ef7 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -2227,7 +2227,7 @@ static int usbredir_post_load(void *priv, int version_id)
/* For usbredirparser migration */
static int usbredir_put_parser(QEMUFile *f, void *priv, size_t unused,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
USBRedirDevice *dev = priv;
uint8_t *data;
@@ -2294,7 +2294,7 @@ static const VMStateInfo usbredir_parser_vmstate_info = {
/* For buffered packets (iso/irq) queue migration */
static int usbredir_put_bufpq(QEMUFile *f, void *priv, size_t unused,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
struct endp_data *endp = priv;
USBRedirDevice *dev = endp->dev;
@@ -2421,7 +2421,8 @@ static const VMStateDescription usbredir_ep_vmstate = {
/* For PacketIdQueue migration */
static int usbredir_put_packet_id_q(QEMUFile *f, void *priv, size_t unused,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field,
+ JSONWriter *vmdesc)
{
struct PacketIdQueue *q = priv;
USBRedirDevice *dev = q->dev;
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index eff35fab7c..b308026596 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2745,7 +2745,7 @@ static int get_extra_state(QEMUFile *f, void *pv, size_t
size,
}
static int put_extra_state(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
VirtIODevice *vdev = pv;
BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
@@ -2919,7 +2919,7 @@ int virtio_save(VirtIODevice *vdev, QEMUFile *f)
/* A wrapper for use as a VMState .put function */
static int virtio_device_put(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
return virtio_save(VIRTIO_DEVICE(opaque), f);
}
diff --git a/migration/qjson.c b/migration/qjson.c
deleted file mode 100644
index e9889bdcb0..0000000000
--- a/migration/qjson.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * A simple JSON writer
- *
- * Copyright Alexander Graf
- *
- * Authors:
- * Alexander Graf <agraf@suse.de>
- *
- * 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.
- *
- */
-
-/*
- * Type QJSON lets you build JSON text. Its interface mirrors (a
- * subset of) abstract JSON syntax.
- *
- * It does *not* detect incorrect use. It happily produces invalid
- * JSON then. This is what migration wants.
- *
- * QAPI output visitors also produce JSON text. However, they do
- * assert their preconditions and invariants, and therefore abort on
- * incorrect use.
- */
-
-#include "qemu/osdep.h"
-#include "qapi/qmp/qstring.h"
-#include "qjson.h"
-
-struct QJSON {
- QString *str;
- bool omit_comma;
-};
-
-static void json_emit_element(QJSON *json, const char *name)
-{
- /* Check whether we need to print a , before an element */
- if (json->omit_comma) {
- json->omit_comma = false;
- } else {
- qstring_append(json->str, ", ");
- }
-
- if (name) {
- qstring_append(json->str, "\"");
- qstring_append(json->str, name);
- qstring_append(json->str, "\" : ");
- }
-}
-
-void json_start_object(QJSON *json, const char *name)
-{
- json_emit_element(json, name);
- qstring_append(json->str, "{ ");
- json->omit_comma = true;
-}
-
-void json_end_object(QJSON *json)
-{
- qstring_append(json->str, " }");
- json->omit_comma = false;
-}
-
-void json_start_array(QJSON *json, const char *name)
-{
- json_emit_element(json, name);
- qstring_append(json->str, "[ ");
- json->omit_comma = true;
-}
-
-void json_end_array(QJSON *json)
-{
- qstring_append(json->str, " ]");
- json->omit_comma = false;
-}
-
-void json_prop_int(QJSON *json, const char *name, int64_t val)
-{
- json_emit_element(json, name);
- qstring_append_int(json->str, val);
-}
-
-void json_prop_str(QJSON *json, const char *name, const char *str)
-{
- json_emit_element(json, name);
- qstring_append_chr(json->str, '"');
- qstring_append(json->str, str);
- qstring_append_chr(json->str, '"');
-}
-
-const char *qjson_get_str(QJSON *json)
-{
- return qstring_get_str(json->str);
-}
-
-QJSON *qjson_new(void)
-{
- QJSON *json = g_new0(QJSON, 1);
-
- json->str = qstring_from_str("{ ");
- json->omit_comma = true;
- return json;
-}
-
-void qjson_finish(QJSON *json)
-{
- json_end_object(json);
-}
-
-void qjson_destroy(QJSON *json)
-{
- qobject_unref(json->str);
- g_free(json);
-}
diff --git a/migration/savevm.c b/migration/savevm.c
index 5f937a2762..138a96de4d 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -42,6 +42,7 @@
#include "postcopy-ram.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-migration.h"
+#include "qapi/qmp/json-writer.h"
#include "qapi/qmp/qerror.h"
#include "qemu/error-report.h"
#include "sysemu/cpus.h"
@@ -58,7 +59,6 @@
#include "sysemu/runstate.h"
#include "sysemu/sysemu.h"
#include "sysemu/xen.h"
-#include "qjson.h"
#include "migration/colo.h"
#include "qemu/bitmap.h"
#include "net/announce.h"
@@ -209,7 +209,7 @@ static int get_timer(QEMUFile *f, void *pv, size_t size,
}
static int put_timer(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
QEMUTimer *v = pv;
timer_put(f, v);
@@ -406,7 +406,7 @@ static int get_capability(QEMUFile *f, void *pv, size_t
size,
}
static int put_capability(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
MigrationCapability *capability = pv;
const char *capability_str = MigrationCapability_str(*capability);
@@ -884,7 +884,8 @@ static int vmstate_load(QEMUFile *f, SaveStateEntry *se)
return vmstate_load_state(f, se->vmsd, se->opaque, se->load_version_id);
}
-static void vmstate_save_old_style(QEMUFile *f, SaveStateEntry *se, QJSON
*vmdesc)
+static void vmstate_save_old_style(QEMUFile *f, SaveStateEntry *se,
+ JSONWriter *vmdesc)
{
int64_t old_offset, size;
@@ -893,18 +894,19 @@ static void vmstate_save_old_style(QEMUFile *f,
SaveStateEntry *se, QJSON *vmdes
size = qemu_ftell_fast(f) - old_offset;
if (vmdesc) {
- json_prop_int(vmdesc, "size", size);
- json_start_array(vmdesc, "fields");
- json_start_object(vmdesc, NULL);
- json_prop_str(vmdesc, "name", "data");
- json_prop_int(vmdesc, "size", size);
- json_prop_str(vmdesc, "type", "buffer");
- json_end_object(vmdesc);
- json_end_array(vmdesc);
+ json_writer_int64(vmdesc, "size", size);
+ json_writer_start_array(vmdesc, "fields");
+ json_writer_start_object(vmdesc, NULL);
+ json_writer_str(vmdesc, "name", "data");
+ json_writer_int64(vmdesc, "size", size);
+ json_writer_str(vmdesc, "type", "buffer");
+ json_writer_end_object(vmdesc);
+ json_writer_end_array(vmdesc);
}
}
-static int vmstate_save(QEMUFile *f, SaveStateEntry *se, QJSON *vmdesc)
+static int vmstate_save(QEMUFile *f, SaveStateEntry *se,
+ JSONWriter *vmdesc)
{
trace_vmstate_save(se->idstr, se->vmsd ? se->vmsd->name : "(old)");
if (!se->vmsd) {
@@ -1357,14 +1359,15 @@ int
qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
bool in_postcopy,
bool inactivate_disks)
{
- g_autoptr(QJSON) vmdesc = NULL;
+ g_autoptr(JSONWriter) vmdesc = NULL;
int vmdesc_len;
SaveStateEntry *se;
int ret;
- vmdesc = qjson_new();
- json_prop_int(vmdesc, "page_size", qemu_target_page_size());
- json_start_array(vmdesc, "devices");
+ vmdesc = json_writer_new(false);
+ json_writer_start_object(vmdesc, NULL);
+ json_writer_int64(vmdesc, "page_size", qemu_target_page_size());
+ json_writer_start_array(vmdesc, "devices");
QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
if ((!se->ops || !se->ops->save_state) && !se->vmsd) {
@@ -1377,9 +1380,9 @@ int
qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
trace_savevm_section_start(se->idstr, se->section_id);
- json_start_object(vmdesc, NULL);
- json_prop_str(vmdesc, "name", se->idstr);
- json_prop_int(vmdesc, "instance_id", se->instance_id);
+ json_writer_start_object(vmdesc, NULL);
+ json_writer_str(vmdesc, "name", se->idstr);
+ json_writer_int64(vmdesc, "instance_id", se->instance_id);
save_section_header(f, se, QEMU_VM_SECTION_FULL);
ret = vmstate_save(f, se, vmdesc);
@@ -1390,7 +1393,7 @@ int
qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
trace_savevm_section_end(se->idstr, se->section_id, 0);
save_section_footer(f, se);
- json_end_object(vmdesc);
+ json_writer_end_object(vmdesc);
}
if (inactivate_disks) {
@@ -1409,14 +1412,14 @@ int
qemu_savevm_state_complete_precopy_non_iterable(QEMUFile *f,
qemu_put_byte(f, QEMU_VM_EOF);
}
- json_end_array(vmdesc);
- qjson_finish(vmdesc);
- vmdesc_len = strlen(qjson_get_str(vmdesc));
+ json_writer_end_array(vmdesc);
+ json_writer_end_object(vmdesc);
+ vmdesc_len = strlen(json_writer_get(vmdesc));
if (should_send_vmdesc()) {
qemu_put_byte(f, QEMU_VM_VMDESCRIPTION);
qemu_put_be32(f, vmdesc_len);
- qemu_put_buffer(f, (uint8_t *)qjson_get_str(vmdesc), vmdesc_len);
+ qemu_put_buffer(f, (uint8_t *)json_writer_get(vmdesc), vmdesc_len);
}
return 0;
diff --git a/migration/vmstate-types.c b/migration/vmstate-types.c
index e22d41d73d..bf4d440308 100644
--- a/migration/vmstate-types.c
+++ b/migration/vmstate-types.c
@@ -29,7 +29,7 @@ static int get_bool(QEMUFile *f, void *pv, size_t size,
}
static int put_bool(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
bool *v = pv;
qemu_put_byte(f, *v);
@@ -53,7 +53,7 @@ static int get_int8(QEMUFile *f, void *pv, size_t size,
}
static int put_int8(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int8_t *v = pv;
qemu_put_s8s(f, v);
@@ -77,7 +77,7 @@ static int get_int16(QEMUFile *f, void *pv, size_t size,
}
static int put_int16(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int16_t *v = pv;
qemu_put_sbe16s(f, v);
@@ -101,7 +101,7 @@ static int get_int32(QEMUFile *f, void *pv, size_t size,
}
static int put_int32(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int32_t *v = pv;
qemu_put_sbe32s(f, v);
@@ -178,7 +178,7 @@ static int get_int64(QEMUFile *f, void *pv, size_t size,
}
static int put_int64(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int64_t *v = pv;
qemu_put_sbe64s(f, v);
@@ -202,7 +202,7 @@ static int get_uint8(QEMUFile *f, void *pv, size_t size,
}
static int put_uint8(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
uint8_t *v = pv;
qemu_put_8s(f, v);
@@ -226,7 +226,7 @@ static int get_uint16(QEMUFile *f, void *pv, size_t size,
}
static int put_uint16(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
uint16_t *v = pv;
qemu_put_be16s(f, v);
@@ -250,7 +250,7 @@ static int get_uint32(QEMUFile *f, void *pv, size_t size,
}
static int put_uint32(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
uint32_t *v = pv;
qemu_put_be32s(f, v);
@@ -300,7 +300,7 @@ static int get_uint64(QEMUFile *f, void *pv, size_t size,
}
static int put_uint64(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
uint64_t *v = pv;
qemu_put_be64s(f, v);
@@ -325,7 +325,7 @@ static int get_nullptr(QEMUFile *f, void *pv, size_t size,
}
static int put_nullptr(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
if (pv == NULL) {
@@ -432,7 +432,7 @@ static int get_cpudouble(QEMUFile *f, void *pv, size_t size,
}
static int put_cpudouble(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
CPU_DoubleU *v = pv;
qemu_put_be32s(f, &v->l.upper);
@@ -457,7 +457,7 @@ static int get_buffer(QEMUFile *f, void *pv, size_t size,
}
static int put_buffer(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
uint8_t *v = pv;
qemu_put_buffer(f, v, size);
@@ -488,7 +488,7 @@ static int get_unused_buffer(QEMUFile *f, void *pv, size_t
size,
}
static int put_unused_buffer(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
static const uint8_t buf[1024];
int block_len;
@@ -530,7 +530,7 @@ static int get_tmp(QEMUFile *f, void *pv, size_t size,
}
static int put_tmp(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
const VMStateDescription *vmsd = field->vmsd;
void *tmp = g_malloc(size);
@@ -573,7 +573,7 @@ static int get_bitmap(QEMUFile *f, void *pv, size_t size,
}
static int put_bitmap(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
unsigned long *bmp = pv;
int i, idx = 0;
@@ -637,7 +637,7 @@ static int get_qtailq(QEMUFile *f, void *pv, size_t
unused_size,
/* put for QTAILQ */
static int put_qtailq(QEMUFile *f, void *pv, size_t unused_size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
const VMStateDescription *vmsd = field->vmsd;
/* offset of the QTAILQ entry in a QTAILQ element*/
@@ -670,7 +670,7 @@ struct put_gtree_data {
QEMUFile *f;
const VMStateDescription *key_vmsd;
const VMStateDescription *val_vmsd;
- QJSON *vmdesc;
+ JSONWriter *vmdesc;
int ret;
};
@@ -703,7 +703,7 @@ static gboolean put_gtree_elem(gpointer key, gpointer
value, gpointer data)
}
static int put_gtree(QEMUFile *f, void *pv, size_t unused_size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
bool direct_key = (!field->start);
const VMStateDescription *key_vmsd = direct_key ? NULL : &field->vmsd[1];
@@ -819,7 +819,7 @@ const VMStateInfo vmstate_info_gtree = {
};
static int put_qlist(QEMUFile *f, void *pv, size_t unused_size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
const VMStateDescription *vmsd = field->vmsd;
/* offset of the QTAILQ entry in a QTAILQ element*/
diff --git a/migration/vmstate.c b/migration/vmstate.c
index e9d2aef66b..05f87cdddc 100644
--- a/migration/vmstate.c
+++ b/migration/vmstate.c
@@ -14,14 +14,14 @@
#include "migration.h"
#include "migration/vmstate.h"
#include "savevm.h"
+#include "qapi/qmp/json-writer.h"
#include "qemu-file.h"
#include "qemu/bitops.h"
#include "qemu/error-report.h"
#include "trace.h"
-#include "qjson.h"
static int vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, QJSON *vmdesc);
+ void *opaque, JSONWriter *vmdesc);
static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque);
@@ -249,7 +249,8 @@ static bool vmsd_can_compress(const VMStateField *field)
return true;
}
-static void vmsd_desc_field_start(const VMStateDescription *vmsd, QJSON
*vmdesc,
+static void vmsd_desc_field_start(const VMStateDescription *vmsd,
+ JSONWriter *vmdesc,
const VMStateField *field, int i, int max)
{
char *name, *old_name;
@@ -270,25 +271,26 @@ static void vmsd_desc_field_start(const
VMStateDescription *vmsd, QJSON *vmdesc,
g_free(old_name);
}
- json_start_object(vmdesc, NULL);
- json_prop_str(vmdesc, "name", name);
+ json_writer_start_object(vmdesc, NULL);
+ json_writer_str(vmdesc, "name", name);
if (is_array) {
if (can_compress) {
- json_prop_int(vmdesc, "array_len", max);
+ json_writer_int64(vmdesc, "array_len", max);
} else {
- json_prop_int(vmdesc, "index", i);
+ json_writer_int64(vmdesc, "index", i);
}
}
- json_prop_str(vmdesc, "type", vmfield_get_type_name(field));
+ json_writer_str(vmdesc, "type", vmfield_get_type_name(field));
if (field->flags & VMS_STRUCT) {
- json_start_object(vmdesc, "struct");
+ json_writer_start_object(vmdesc, "struct");
}
g_free(name);
}
-static void vmsd_desc_field_end(const VMStateDescription *vmsd, QJSON *vmdesc,
+static void vmsd_desc_field_end(const VMStateDescription *vmsd,
+ JSONWriter *vmdesc,
const VMStateField *field, size_t size, int i)
{
if (!vmdesc) {
@@ -297,11 +299,11 @@ static void vmsd_desc_field_end(const VMStateDescription
*vmsd, QJSON *vmdesc,
if (field->flags & VMS_STRUCT) {
/* We printed a struct in between, close its child object */
- json_end_object(vmdesc);
+ json_writer_end_object(vmdesc);
}
- json_prop_int(vmdesc, "size", size);
- json_end_object(vmdesc);
+ json_writer_int64(vmdesc, "size", size);
+ json_writer_end_object(vmdesc);
}
@@ -316,13 +318,13 @@ bool vmstate_save_needed(const VMStateDescription *vmsd,
void *opaque)
int vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, QJSON *vmdesc_id)
+ void *opaque, JSONWriter *vmdesc_id)
{
return vmstate_save_state_v(f, vmsd, opaque, vmdesc_id, vmsd->version_id);
}
int vmstate_save_state_v(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, QJSON *vmdesc, int version_id)
+ void *opaque, JSONWriter *vmdesc, int version_id)
{
int ret = 0;
const VMStateField *field = vmsd->fields;
@@ -339,9 +341,9 @@ int vmstate_save_state_v(QEMUFile *f, const
VMStateDescription *vmsd,
}
if (vmdesc) {
- json_prop_str(vmdesc, "vmsd_name", vmsd->name);
- json_prop_int(vmdesc, "version", version_id);
- json_start_array(vmdesc, "fields");
+ json_writer_str(vmdesc, "vmsd_name", vmsd->name);
+ json_writer_int64(vmdesc, "version", version_id);
+ json_writer_start_array(vmdesc, "fields");
}
while (field->name) {
@@ -353,7 +355,7 @@ int vmstate_save_state_v(QEMUFile *f, const
VMStateDescription *vmsd,
int i, n_elems = vmstate_n_elems(opaque, field);
int size = vmstate_size(opaque, field);
int64_t old_offset, written_bytes;
- QJSON *vmdesc_loop = vmdesc;
+ JSONWriter *vmdesc_loop = vmdesc;
trace_vmstate_save_state_loop(vmsd->name, field->name, n_elems);
if (field->flags & VMS_POINTER) {
@@ -413,7 +415,7 @@ int vmstate_save_state_v(QEMUFile *f, const
VMStateDescription *vmsd,
}
if (vmdesc) {
- json_end_array(vmdesc);
+ json_writer_end_array(vmdesc);
}
ret = vmstate_subsection_save(f, vmsd, opaque, vmdesc);
@@ -491,7 +493,7 @@ static int vmstate_subsection_load(QEMUFile *f, const
VMStateDescription *vmsd,
}
static int vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
- void *opaque, QJSON *vmdesc)
+ void *opaque, JSONWriter *vmdesc)
{
const VMStateDescription **sub = vmsd->subsections;
bool vmdesc_has_subsections = false;
@@ -507,11 +509,11 @@ static int vmstate_subsection_save(QEMUFile *f, const
VMStateDescription *vmsd,
if (vmdesc) {
/* Only create subsection array when we have any */
if (!vmdesc_has_subsections) {
- json_start_array(vmdesc, "subsections");
+ json_writer_start_array(vmdesc, "subsections");
vmdesc_has_subsections = true;
}
- json_start_object(vmdesc, NULL);
+ json_writer_start_object(vmdesc, NULL);
}
qemu_put_byte(f, QEMU_VM_SUBSECTION);
@@ -525,14 +527,14 @@ static int vmstate_subsection_save(QEMUFile *f, const
VMStateDescription *vmsd,
}
if (vmdesc) {
- json_end_object(vmdesc);
+ json_writer_end_object(vmdesc);
}
}
sub++;
}
if (vmdesc_has_subsections) {
- json_end_array(vmdesc);
+ json_writer_end_array(vmdesc);
}
return ret;
diff --git a/target/alpha/machine.c b/target/alpha/machine.c
index 9d20169d4f..2b7c8148ff 100644
--- a/target/alpha/machine.c
+++ b/target/alpha/machine.c
@@ -11,7 +11,7 @@ static int get_fpcr(QEMUFile *f, void *opaque, size_t size,
}
static int put_fpcr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
CPUAlphaState *env = opaque;
qemu_put_be64(f, cpu_alpha_load_fpcr(env));
diff --git a/target/arm/machine.c b/target/arm/machine.c
index c5a2114f51..581852bc53 100644
--- a/target/arm/machine.c
+++ b/target/arm/machine.c
@@ -27,7 +27,7 @@ static int get_fpscr(QEMUFile *f, void *opaque, size_t size,
}
static int put_fpscr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ARMCPU *cpu = opaque;
CPUARMState *env = &cpu->env;
@@ -573,7 +573,7 @@ static int get_cpsr(QEMUFile *f, void *opaque, size_t size,
}
static int put_cpsr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ARMCPU *cpu = opaque;
CPUARMState *env = &cpu->env;
@@ -608,7 +608,7 @@ static int get_power(QEMUFile *f, void *opaque, size_t size,
}
static int put_power(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ARMCPU *cpu = opaque;
diff --git a/target/avr/machine.c b/target/avr/machine.c
index e315442787..de264f57c3 100644
--- a/target/avr/machine.c
+++ b/target/avr/machine.c
@@ -34,7 +34,7 @@ static int get_sreg(QEMUFile *f, void *opaque, size_t size,
}
static int put_sreg(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
CPUAVRState *env = opaque;
uint8_t sreg = cpu_get_sreg(env);
@@ -61,7 +61,7 @@ static int get_segment(QEMUFile *f, void *opaque, size_t size,
}
static int put_segment(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
uint32_t *ramp = opaque;
uint8_t temp = *ramp >> 16;
diff --git a/target/hppa/machine.c b/target/hppa/machine.c
index b60b654efb..905991d7f9 100644
--- a/target/hppa/machine.c
+++ b/target/hppa/machine.c
@@ -52,7 +52,7 @@ static int get_psw(QEMUFile *f, void *opaque, size_t size,
}
static int put_psw(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
CPUHPPAState *env = opaque;
qemu_put_betr(f, cpu_hppa_get_psw(env));
@@ -93,7 +93,7 @@ static int get_tlb(QEMUFile *f, void *opaque, size_t size,
}
static int put_tlb(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
hppa_tlb_entry *ent = opaque;
uint32_t val = 0;
diff --git a/target/microblaze/machine.c b/target/microblaze/machine.c
index c2074bbdfe..d24def3992 100644
--- a/target/microblaze/machine.c
+++ b/target/microblaze/machine.c
@@ -46,7 +46,7 @@ static int get_msr(QEMUFile *f, void *opaque, size_t size,
}
static int put_msr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
CPUMBState *env = container_of(opaque, CPUMBState, msr);
diff --git a/target/mips/machine.c b/target/mips/machine.c
index 5b23e3e912..77afe654e9 100644
--- a/target/mips/machine.c
+++ b/target/mips/machine.c
@@ -31,7 +31,7 @@ static int get_fpr(QEMUFile *f, void *pv, size_t size,
}
static int put_fpr(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
int i;
fpr_t *v = pv;
@@ -156,7 +156,7 @@ static int get_tlb(QEMUFile *f, void *pv, size_t size,
}
static int put_tlb(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
r4k_tlb_t *v = pv;
diff --git a/target/openrisc/machine.c b/target/openrisc/machine.c
index b92985d99b..6239725c4f 100644
--- a/target/openrisc/machine.c
+++ b/target/openrisc/machine.c
@@ -55,7 +55,7 @@ static int get_sr(QEMUFile *f, void *opaque, size_t size,
}
static int put_sr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
CPUOpenRISCState *env = opaque;
qemu_put_be32(f, cpu_get_sr(env));
diff --git a/target/ppc/machine.c b/target/ppc/machine.c
index d9d911b9b1..283db1d28a 100644
--- a/target/ppc/machine.c
+++ b/target/ppc/machine.c
@@ -134,7 +134,7 @@ static int get_avr(QEMUFile *f, void *pv, size_t size,
}
static int put_avr(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ppc_avr_t *v = pv;
@@ -166,7 +166,7 @@ static int get_fpr(QEMUFile *f, void *pv, size_t size,
}
static int put_fpr(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ppc_vsr_t *v = pv;
@@ -197,7 +197,7 @@ static int get_vsr(QEMUFile *f, void *pv, size_t size,
}
static int put_vsr(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ppc_vsr_t *v = pv;
@@ -455,7 +455,7 @@ static int get_vscr(QEMUFile *f, void *opaque, size_t size,
}
static int put_vscr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
PowerPCCPU *cpu = opaque;
qemu_put_be32(f, helper_mfvscr(&cpu->env));
@@ -580,7 +580,7 @@ static int get_slbe(QEMUFile *f, void *pv, size_t size,
}
static int put_slbe(QEMUFile *f, void *pv, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
ppc_slb_t *v = pv;
diff --git a/target/sparc/machine.c b/target/sparc/machine.c
index f38cf229af..917375c3a1 100644
--- a/target/sparc/machine.c
+++ b/target/sparc/machine.c
@@ -68,7 +68,7 @@ static int get_psr(QEMUFile *f, void *opaque, size_t size,
}
static int put_psr(QEMUFile *f, void *opaque, size_t size,
- const VMStateField *field, QJSON *vmdesc)
+ const VMStateField *field, JSONWriter *vmdesc)
{
SPARCCPU *cpu = opaque;
CPUSPARCState *env = &cpu->env;
diff --git a/migration/meson.build b/migration/meson.build
index 980e37865c..291adc1337 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -6,7 +6,6 @@ migration_files = files(
'vmstate.c',
'qemu-file-channel.c',
'qemu-file.c',
- 'qjson.c',
)
softmmu_ss.add(migration_files)
--
2.26.2
- [PULL 22/33] qmp: Fix tracing of non-string command IDs, (continued)
- [PULL 22/33] qmp: Fix tracing of non-string command IDs, Markus Armbruster, 2020/12/19
- [PULL 20/33] hw/rdma: Replace QList by GQueue, Markus Armbruster, 2020/12/19
- [PULL 23/33] block: Avoid qobject_get_try_str(), Markus Armbruster, 2020/12/19
- [PULL 28/33] qobject: Factor JSON writer out of qobject_to_json(), Markus Armbruster, 2020/12/19
- [PULL 25/33] qobject: Drop qobject_get_try_str(), Markus Armbruster, 2020/12/19
- [PULL 30/33] json: Use GString instead of QString to accumulate strings, Markus Armbruster, 2020/12/19
- [PULL 31/33] keyval: Use GString to accumulate value strings, Markus Armbruster, 2020/12/19
- [PULL 18/33] qobject: Change qobject_to_json()'s value to GString, Markus Armbruster, 2020/12/19
- [PULL 33/33] qobject: Make QString immutable, Markus Armbruster, 2020/12/19
- [PULL 27/33] qobject: Factor quoted_str() out of to_json(), Markus Armbruster, 2020/12/19
- [PULL 29/33] migration: Replace migration's JSON writer by the general one,
Markus Armbruster <=
- [PULL 32/33] block: Use GString instead of QString to build filenames, Markus Armbruster, 2020/12/19
- [PULL 21/33] qobject: Move internals to qobject-internal.h, Markus Armbruster, 2020/12/19
- [PULL 14/33] hmp: Simplify how qmp_human_monitor_command() gets output, Markus Armbruster, 2020/12/19
- [PULL 17/33] qobject: Use GString instead of QString to accumulate JSON, Markus Armbruster, 2020/12/19
- [PULL 03/33] qapi: Use QAPI_LIST_PREPEND() where possible, Markus Armbruster, 2020/12/19
- [PULL 24/33] Revert "qobject: let object_property_get_str() use new API", Markus Armbruster, 2020/12/19
- Re: [PULL 00/33] QAPI patches patches for 2020-12-19, no-reply, 2020/12/19