qemu/migration/threadinfo.c

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/*
* Migration Threads info
*
* Copyright (c) 2022 HUAWEI TECHNOLOGIES CO., LTD.
*
* Authors:
* Jiang Jiacheng <jiangjiacheng@huawei.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/queue.h"
#include "qemu/lockable.h"
#include "threadinfo.h"
QemuMutex migration_threads_lock;
static QLIST_HEAD(, MigrationThread) migration_threads;
static void __attribute__((constructor)) migration_threads_init(void)
{
qemu_mutex_init(&migration_threads_lock);
}
MigrationThread *migration_threads_add(const char *name, int thread_id)
{
MigrationThread *thread = g_new0(MigrationThread, 1);
thread->name = name;
thread->thread_id = thread_id;
WITH_QEMU_LOCK_GUARD(&migration_threads_lock) {
QLIST_INSERT_HEAD(&migration_threads, thread, node);
}
return thread;
}
void migration_threads_remove(MigrationThread *thread)
{
QEMU_LOCK_GUARD(&migration_threads_lock);
if (thread) {
QLIST_REMOVE(thread, node);
g_free(thread);
}
}
MigrationThreadInfoList *qmp_query_migrationthreads(Error **errp)
{
MigrationThreadInfoList *head = NULL;
MigrationThreadInfoList **tail = &head;
MigrationThread *thread = NULL;
QEMU_LOCK_GUARD(&migration_threads_lock);
QLIST_FOREACH(thread, &migration_threads, node) {
MigrationThreadInfo *info = g_new0(MigrationThreadInfo, 1);
info->name = g_strdup(thread->name);
info->thread_id = thread->thread_id;
QAPI_LIST_APPEND(tail, info);
}
return head;
}