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190b9a8b CX |
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" | |
b0262955 | 17 | #include "block/replication.h" |
190b9a8b CX |
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 | } |