Fix: add session_info object to sessions_ht
[lttng-tools.git] / src / common / action.c
CommitLineData
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1/*
2 * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License, version 2.1 only,
6 * as published by the Free Software Foundation.
7 *
8 * This library is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
11 * for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
18#include <lttng/action/action-internal.h>
19#include <lttng/action/notify-internal.h>
20#include <common/error.h>
21#include <assert.h>
22
23enum lttng_action_type lttng_action_get_type(struct lttng_action *action)
24{
25 return action ? action->type : LTTNG_ACTION_TYPE_UNKNOWN;
26}
27
28void lttng_action_destroy(struct lttng_action *action)
29{
30 if (!action) {
31 return;
32 }
33
34 assert(action->destroy);
35 action->destroy(action);
36}
37
38LTTNG_HIDDEN
39bool lttng_action_validate(struct lttng_action *action)
40{
41 bool valid;
42
43 if (!action) {
44 valid = false;
45 goto end;
46 }
47
48 if (!action->validate) {
49 /* Sub-class guarantees that it can never be invalid. */
50 valid = true;
51 goto end;
52 }
53
54 valid = action->validate(action);
55end:
56 return valid;
57}
58
59LTTNG_HIDDEN
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60int lttng_action_serialize(struct lttng_action *action,
61 struct lttng_dynamic_buffer *buf)
a58c490f 62{
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63 int ret;
64 struct lttng_action_comm action_comm = {
65 .action_type = (int8_t) action->type,
66 };
67
68 ret = lttng_dynamic_buffer_append(buf, &action_comm,
69 sizeof(action_comm));
70 if (ret) {
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71 goto end;
72 }
73
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74 ret = action->serialize(action, buf);
75 if (ret) {
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76 goto end;
77 }
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78end:
79 return ret;
80}
81
82LTTNG_HIDDEN
83ssize_t lttng_action_create_from_buffer(const struct lttng_buffer_view *view,
84 struct lttng_action **_action)
85{
86 ssize_t ret, action_size = sizeof(struct lttng_action_comm);
87 struct lttng_action *action;
88 const struct lttng_action_comm *action_comm;
89
90 if (!view || !_action) {
91 ret = -1;
92 goto end;
93 }
94
95 action_comm = (const struct lttng_action_comm *) view->data;
96 DBG("Deserializing action from buffer");
97 switch (action_comm->action_type) {
98 case LTTNG_ACTION_TYPE_NOTIFY:
99 action = lttng_action_notify_create();
100 break;
101 default:
102 ret = -1;
103 goto end;
104 }
105
106 if (!action) {
107 ret = -1;
108 goto end;
109 }
110 ret = action_size;
111 *_action = action;
112end:
113 return ret;
114}
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