migration: Introduce interface query-migrationthreads
Introduce interface query-migrationthreads. The interface is used to query information about migration threads and returns with migration thread's name and its id. Introduce threadinfo.c to manage threads with migration. Signed-off-by: Jiang Jiacheng <jiangjiacheng@huawei.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
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@ -26,6 +26,7 @@ softmmu_ss.add(files(
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'savevm.c',
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'socket.c',
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'tls.c',
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'threadinfo.c',
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), gnutls)
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softmmu_ss.add(when: rdma, if_true: files('rdma.c'))
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51
migration/threadinfo.c
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51
migration/threadinfo.c
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@ -0,0 +1,51 @@
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/*
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* Migration Threads info
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*
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* Copyright (c) 2022 HUAWEI TECHNOLOGIES CO., LTD.
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*
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* Authors:
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* Jiang Jiacheng <jiangjiacheng@huawei.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "threadinfo.h"
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static QLIST_HEAD(, MigrationThread) migration_threads;
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MigrationThread *MigrationThreadAdd(const char *name, int thread_id)
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{
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MigrationThread *thread = g_new0(MigrationThread, 1);
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thread->name = name;
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thread->thread_id = thread_id;
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QLIST_INSERT_HEAD(&migration_threads, thread, node);
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return thread;
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}
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void MigrationThreadDel(MigrationThread *thread)
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{
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if (thread) {
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QLIST_REMOVE(thread, node);
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g_free(thread);
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}
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}
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MigrationThreadInfoList *qmp_query_migrationthreads(Error **errp)
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{
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MigrationThreadInfoList *head = NULL;
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MigrationThreadInfoList **tail = &head;
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MigrationThread *thread = NULL;
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QLIST_FOREACH(thread, &migration_threads, node) {
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MigrationThreadInfo *info = g_new0(MigrationThreadInfo, 1);
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info->name = g_strdup(thread->name);
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info->thread_id = thread->thread_id;
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QAPI_LIST_APPEND(tail, info);
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}
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return head;
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}
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28
migration/threadinfo.h
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28
migration/threadinfo.h
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@ -0,0 +1,28 @@
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/*
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* Migration Threads info
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*
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* Copyright (c) 2022 HUAWEI TECHNOLOGIES CO., LTD.
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*
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* Authors:
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* Jiang Jiacheng <jiangjiacheng@huawei.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/queue.h"
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-migration.h"
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typedef struct MigrationThread MigrationThread;
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struct MigrationThread {
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const char *name; /* the name of migration thread */
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int thread_id; /* ID of the underlying host thread */
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QLIST_ENTRY(MigrationThread) node;
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};
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MigrationThread *MigrationThreadAdd(const char *name, int thread_id);
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void MigrationThreadDel(MigrationThread *info);
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@ -1958,6 +1958,35 @@
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{ 'command': 'query-vcpu-dirty-limit',
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'returns': [ 'DirtyLimitInfo' ] }
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##
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# @MigrationThreadInfo:
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#
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# Information about migrationthreads
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#
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# @name: the name of migration thread
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#
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# @thread-id: ID of the underlying host thread
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#
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# Since: 7.2
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##
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{ 'struct': 'MigrationThreadInfo',
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'data': {'name': 'str',
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'thread-id': 'int'} }
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##
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# @query-migrationthreads:
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#
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# Returns information of migration threads
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#
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# data: migration thread name
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#
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# returns: information about migration threads
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#
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# Since: 7.2
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##
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{ 'command': 'query-migrationthreads',
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'returns': ['MigrationThreadInfo'] }
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##
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# @snapshot-save:
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#
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