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migration: remove the QEMUFileOps abstraction

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Now that all QEMUFile callbacks are removed, the entire concept can be
deleted.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2022-06-20 12:02:05 +01:00 committed by Dr. David Alan Gilbert
parent 02bdbe172d
commit 77ef2dc1c8
12 changed files with 27 additions and 128 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
migration/channel.c
View File

@ -14,7 +14,7 @@
#include "channel.h"
#include "tls.h"
#include "migration.h"
#include "qemu-file-channel.h"
#include "qemu-file.h"
#include "trace.h"
#include "qapi/error.h"
#include "io/channel-tls.h"
@ -85,7 +85,7 @@ void migration_channel_connect(MigrationState *s,
return;
}
} else {
QEMUFile *f = qemu_fopen_channel_output(ioc);
QEMUFile *f = qemu_file_new_output(ioc);
migration_ioc_register_yank(ioc);

5
migration/colo.c
View File

@ -14,7 +14,6 @@
#include "sysemu/sysemu.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-migration.h"
#include "qemu-file-channel.h"
#include "migration.h"
#include "qemu-file.h"
#include "savevm.h"
@ -559,7 +558,7 @@ static void colo_process_checkpoint(MigrationState *s)
goto out;
}
bioc = qio_channel_buffer_new(COLO_BUFFER_BASE_SIZE);
fb = qemu_fopen_channel_output(QIO_CHANNEL(bioc));
fb = qemu_file_new_output(QIO_CHANNEL(bioc));
object_unref(OBJECT(bioc));
qemu_mutex_lock_iothread();
@ -873,7 +872,7 @@ void *colo_process_incoming_thread(void *opaque)
colo_incoming_start_dirty_log();
bioc = qio_channel_buffer_new(COLO_BUFFER_BASE_SIZE);
fb = qemu_fopen_channel_input(QIO_CHANNEL(bioc));
fb = qemu_file_new_input(QIO_CHANNEL(bioc));
object_unref(OBJECT(bioc));
qemu_mutex_lock_iothread();

1
migration/meson.build
View File

@ -4,7 +4,6 @@ migration_files = files(
'xbzrle.c',
'vmstate-types.c',
'vmstate.c',
'qemu-file-channel.c',
'qemu-file.c',
'yank_functions.c',
)

7
migration/migration.c
View File

@ -30,7 +30,6 @@
#include "migration/misc.h"
#include "migration.h"
#include "savevm.h"
#include "qemu-file-channel.h"
#include "qemu-file.h"
#include "migration/vmstate.h"
#include "block/block.h"
@ -723,7 +722,7 @@ void migration_ioc_process_incoming(QIOChannel *ioc, Error **errp)
if (!mis->from_src_file) {
/* The first connection (multifd may have multiple) */
QEMUFile *f = qemu_fopen_channel_input(ioc);
QEMUFile *f = qemu_file_new_input(ioc);
if (!migration_incoming_setup(f, errp)) {
return;
@ -3076,7 +3075,7 @@ static int postcopy_start(MigrationState *ms)
*/
bioc = qio_channel_buffer_new(4096);
qio_channel_set_name(QIO_CHANNEL(bioc), "migration-postcopy-buffer");
fb = qemu_fopen_channel_output(QIO_CHANNEL(bioc));
fb = qemu_file_new_output(QIO_CHANNEL(bioc));
object_unref(OBJECT(bioc));
/*
@ -3966,7 +3965,7 @@ static void *bg_migration_thread(void *opaque)
*/
s->bioc = qio_channel_buffer_new(512 * 1024);
qio_channel_set_name(QIO_CHANNEL(s->bioc), "vmstate-buffer");
fb = qemu_fopen_channel_output(QIO_CHANNEL(s->bioc));
fb = qemu_file_new_output(QIO_CHANNEL(s->bioc));
object_unref(OBJECT(s->bioc));
update_iteration_initial_status(s);

53
migration/qemu-file-channel.c
View File

@ -1,53 +0,0 @@
/*
* QEMUFile backend for QIOChannel objects
*
* Copyright (c) 2015-2016 Red Hat, Inc
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu-file-channel.h"
#include "qemu-file.h"
#include "io/channel-socket.h"
#include "io/channel-tls.h"
#include "qemu/iov.h"
#include "qemu/yank.h"
#include "yank_functions.h"
static const QEMUFileOps channel_input_ops = {
};
static const QEMUFileOps channel_output_ops = {
};
QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc)
{
object_ref(OBJECT(ioc));
return qemu_file_new_input(ioc, &channel_input_ops);
}
QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc)
{
object_ref(OBJECT(ioc));
return qemu_file_new_output(ioc, &channel_output_ops);
}

32
migration/qemu-file-channel.h
View File

@ -1,32 +0,0 @@
/*
* QEMUFile backend for QIOChannel objects
*
* Copyright (c) 2015-2016 Red Hat, Inc
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef QEMU_FILE_CHANNEL_H
#define QEMU_FILE_CHANNEL_H
#include "io/channel.h"
QEMUFile *qemu_fopen_channel_input(QIOChannel *ioc);
QEMUFile *qemu_fopen_channel_output(QIOChannel *ioc);
#endif

20
migration/qemu-file.c
View File

@ -35,7 +35,6 @@
#define MAX_IOV_SIZE MIN_CONST(IOV_MAX, 64)
struct QEMUFile {
const QEMUFileOps *ops;
const QEMUFileHooks *hooks;
QIOChannel *ioc;
bool is_writable;
@ -107,16 +106,14 @@ bool qemu_file_mode_is_not_valid(const char *mode)
return false;
}
static QEMUFile *qemu_file_new_impl(QIOChannel *ioc,
const QEMUFileOps *ops,
bool is_writable)
static QEMUFile *qemu_file_new_impl(QIOChannel *ioc, bool is_writable)
{
QEMUFile *f;
f = g_new0(QEMUFile, 1);
object_ref(ioc);
f->ioc = ioc;
f->ops = ops;
f->is_writable = is_writable;
return f;
@ -128,21 +125,19 @@ static QEMUFile *qemu_file_new_impl(QIOChannel *ioc,
*/
QEMUFile *qemu_file_get_return_path(QEMUFile *f)
{
object_ref(f->ioc);
return qemu_file_new_impl(f->ioc, f->ops, !f->is_writable);
return qemu_file_new_impl(f->ioc, !f->is_writable);
}
QEMUFile *qemu_file_new_output(QIOChannel *ioc, const QEMUFileOps *ops)
QEMUFile *qemu_file_new_output(QIOChannel *ioc)
{
return qemu_file_new_impl(ioc, ops, true);
return qemu_file_new_impl(ioc, true);
}
QEMUFile *qemu_file_new_input(QIOChannel *ioc, const QEMUFileOps *ops)
QEMUFile *qemu_file_new_input(QIOChannel *ioc)
{
return qemu_file_new_impl(ioc, ops, false);
return qemu_file_new_impl(ioc, false);
}
void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks)
{
f->hooks = hooks;
@ -238,6 +233,7 @@ static void qemu_iovec_release_ram(QEMUFile *f)
memset(f->may_free, 0, sizeof(f->may_free));
}
/**
* Flushes QEMUFile buffer
*

7
migration/qemu-file.h
View File

@ -55,9 +55,6 @@ typedef size_t (QEMURamSaveFunc)(QEMUFile *f,
size_t size,
uint64_t *bytes_sent);
typedef struct QEMUFileOps {
} QEMUFileOps;
typedef struct QEMUFileHooks {
QEMURamHookFunc *before_ram_iterate;
QEMURamHookFunc *after_ram_iterate;
@ -65,8 +62,8 @@ typedef struct QEMUFileHooks {
QEMURamSaveFunc *save_page;
} QEMUFileHooks;
QEMUFile *qemu_file_new_input(QIOChannel *ioc, const QEMUFileOps *ops);
QEMUFile *qemu_file_new_output(QIOChannel *ioc, const QEMUFileOps *ops);
QEMUFile *qemu_file_new_input(QIOChannel *ioc);
QEMUFile *qemu_file_new_output(QIOChannel *ioc);
void qemu_file_set_hooks(QEMUFile *f, const QEMUFileHooks *hooks);
int qemu_fclose(QEMUFile *f);

3
migration/ram.c
View File

@ -38,7 +38,6 @@
#include "migration.h"
#include "migration/register.h"
#include "migration/misc.h"
#include "migration/qemu-file-channel.h"
#include "qemu-file.h"
#include "postcopy-ram.h"
#include "page_cache.h"
@ -569,7 +568,7 @@ static int compress_threads_save_setup(void)
/* comp_param[i].file is just used as a dummy buffer to save data,
* set its ops to empty.
*/
comp_param[i].file = qemu_fopen_channel_output(
comp_param[i].file = qemu_file_new_output(
QIO_CHANNEL(qio_channel_null_new()));
comp_param[i].done = true;
comp_param[i].quit = false;

5
migration/rdma.c
View File

@ -21,7 +21,6 @@
#include "migration.h"
#include "qemu-file.h"
#include "ram.h"
#include "qemu-file-channel.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
@ -4052,12 +4051,12 @@ static QEMUFile *qemu_fopen_rdma(RDMAContext *rdma, const char *mode)
rioc = QIO_CHANNEL_RDMA(object_new(TYPE_QIO_CHANNEL_RDMA));
if (mode[0] == 'w') {
rioc->file = qemu_fopen_channel_output(QIO_CHANNEL(rioc));
rioc->file = qemu_file_new_output(QIO_CHANNEL(rioc));
rioc->rdmaout = rdma;
rioc->rdmain = rdma->return_path;
qemu_file_set_hooks(rioc->file, &rdma_write_hooks);
} else {
rioc->file = qemu_fopen_channel_input(QIO_CHANNEL(rioc));
rioc->file = qemu_file_new_input(QIO_CHANNEL(rioc));
rioc->rdmain = rdma;
rioc->rdmaout = rdma->return_path;
qemu_file_set_hooks(rioc->file, &rdma_read_hooks);

13
migration/savevm.c
View File

@ -37,7 +37,6 @@
#include "migration/global_state.h"
#include "migration/channel-block.h"
#include "ram.h"
#include "qemu-file-channel.h"
#include "qemu-file.h"
#include "savevm.h"
#include "postcopy-ram.h"
@ -134,11 +133,9 @@ static struct mig_cmd_args {
static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
{
if (is_writable) {
return qemu_fopen_channel_output(
QIO_CHANNEL(qio_channel_block_new(bs)));
return qemu_file_new_output(QIO_CHANNEL(qio_channel_block_new(bs)));
} else {
return qemu_fopen_channel_input(
QIO_CHANNEL(qio_channel_block_new(bs)));
return qemu_file_new_input(QIO_CHANNEL(qio_channel_block_new(bs)));
}
}
@ -2161,7 +2158,7 @@ static int loadvm_handle_cmd_packaged(MigrationIncomingState *mis)
bioc->usage += length;
trace_loadvm_handle_cmd_packaged_received(ret);
QEMUFile *packf = qemu_fopen_channel_input(QIO_CHANNEL(bioc));
QEMUFile *packf = qemu_file_new_input(QIO_CHANNEL(bioc));
ret = qemu_loadvm_state_main(packf, mis);
trace_loadvm_handle_cmd_packaged_main(ret);
@ -2919,7 +2916,7 @@ void qmp_xen_save_devices_state(const char *filename, bool has_live, bool live,
goto the_end;
}
qio_channel_set_name(QIO_CHANNEL(ioc), "migration-xen-save-state");
f = qemu_fopen_channel_output(QIO_CHANNEL(ioc));
f = qemu_file_new_output(QIO_CHANNEL(ioc));
object_unref(OBJECT(ioc));
ret = qemu_save_device_state(f);
if (ret < 0 || qemu_fclose(f) < 0) {
@ -2966,7 +2963,7 @@ void qmp_xen_load_devices_state(const char *filename, Error **errp)
return;
}
qio_channel_set_name(QIO_CHANNEL(ioc), "migration-xen-load-state");
f = qemu_fopen_channel_input(QIO_CHANNEL(ioc));
f = qemu_file_new_input(QIO_CHANNEL(ioc));
object_unref(OBJECT(ioc));
ret = qemu_loadvm_state(f);

5
tests/unit/test-vmstate.c
View File

@ -28,7 +28,6 @@
#include "migration/vmstate.h"
#include "migration/qemu-file-types.h"
#include "../migration/qemu-file.h"
#include "../migration/qemu-file-channel.h"
#include "../migration/savevm.h"
#include "qemu/coroutine.h"
#include "qemu/module.h"
@ -52,9 +51,9 @@ static QEMUFile *open_test_file(bool write)
}
ioc = QIO_CHANNEL(qio_channel_file_new_fd(fd));
if (write) {
f = qemu_fopen_channel_output(ioc);
f = qemu_file_new_output(ioc);
} else {
f = qemu_fopen_channel_input(ioc);
f = qemu_file_new_input(ioc);
}
object_unref(OBJECT(ioc));
return f;