1 | /* |
2 | * Replication filter |
3 | * |
4 | * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. |
5 | * Copyright (c) 2016 Intel Corporation |
6 | * Copyright (c) 2016 FUJITSU LIMITED |
7 | * |
8 | * Author: |
9 | * Changlong Xie <xiecl.fnst@cn.fujitsu.com> |
10 | * |
11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
12 | * See the COPYING file in the top-level directory. |
13 | */ |
14 | |
15 | #include "qemu/osdep.h" |
16 | #include "qapi/error.h" |
17 | #include "replication.h" |
18 | |
19 | static QLIST_HEAD(, ReplicationState) replication_states; |
20 | |
21 | ReplicationState *replication_new(void *opaque, ReplicationOps *ops) |
22 | { |
23 | ReplicationState *rs; |
24 | |
25 | assert(ops != NULL); |
26 | rs = g_new0(ReplicationState, 1); |
27 | rs->opaque = opaque; |
28 | rs->ops = ops; |
29 | QLIST_INSERT_HEAD(&replication_states, rs, node); |
30 | |
31 | return rs; |
32 | } |
33 | |
34 | void replication_remove(ReplicationState *rs) |
35 | { |
36 | if (rs) { |
37 | QLIST_REMOVE(rs, node); |
38 | g_free(rs); |
39 | } |
40 | } |
41 | |
42 | /* |
43 | * The caller of the function MUST make sure vm stopped |
44 | */ |
45 | void replication_start_all(ReplicationMode mode, Error **errp) |
46 | { |
47 | ReplicationState *rs, *next; |
48 | Error *local_err = NULL; |
49 | |
50 | QLIST_FOREACH_SAFE(rs, &replication_states, node, next) { |
51 | if (rs->ops && rs->ops->start) { |
52 | rs->ops->start(rs, mode, &local_err); |
53 | } |
54 | if (local_err) { |
55 | error_propagate(errp, local_err); |
56 | return; |
57 | } |
58 | } |
59 | } |
60 | |
61 | void replication_do_checkpoint_all(Error **errp) |
62 | { |
63 | ReplicationState *rs, *next; |
64 | Error *local_err = NULL; |
65 | |
66 | QLIST_FOREACH_SAFE(rs, &replication_states, node, next) { |
67 | if (rs->ops && rs->ops->checkpoint) { |
68 | rs->ops->checkpoint(rs, &local_err); |
69 | } |
70 | if (local_err) { |
71 | error_propagate(errp, local_err); |
72 | return; |
73 | } |
74 | } |
75 | } |
76 | |
77 | void replication_get_error_all(Error **errp) |
78 | { |
79 | ReplicationState *rs, *next; |
80 | Error *local_err = NULL; |
81 | |
82 | QLIST_FOREACH_SAFE(rs, &replication_states, node, next) { |
83 | if (rs->ops && rs->ops->get_error) { |
84 | rs->ops->get_error(rs, &local_err); |
85 | } |
86 | if (local_err) { |
87 | error_propagate(errp, local_err); |
88 | return; |
89 | } |
90 | } |
91 | } |
92 | |
93 | void replication_stop_all(bool failover, Error **errp) |
94 | { |
95 | ReplicationState *rs, *next; |
96 | Error *local_err = NULL; |
97 | |
98 | QLIST_FOREACH_SAFE(rs, &replication_states, node, next) { |
99 | if (rs->ops && rs->ops->stop) { |
100 | rs->ops->stop(rs, failover, &local_err); |
101 | } |
102 | if (local_err) { |
103 | error_propagate(errp, local_err); |
104 | return; |
105 | } |
106 | } |
107 | } |
108 | |