2 * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * This program 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.
8 * This program 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
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 #include <common/buffer-view.h>
19 #include <common/dynamic-buffer.h>
20 #include <common/error.h>
24 struct lttng_buffer_view
lttng_buffer_view_init(
25 const char *src
, size_t offset
, ptrdiff_t len
)
27 struct lttng_buffer_view view
= { .data
= src
+ offset
, .size
= len
};
32 struct lttng_buffer_view
lttng_buffer_view_from_view(
33 const struct lttng_buffer_view
*src
, size_t offset
,
36 struct lttng_buffer_view view
= { .data
= NULL
, .size
= 0 };
40 if (offset
> src
->size
) {
41 ERR("Attempt to create buffer view with invalid offset");
45 if (len
!= -1 && len
> (src
->size
- offset
)) {
46 ERR("Attempt to create buffer view with invalid length");
50 view
.data
= src
->data
+ offset
;
51 view
.size
= len
== -1 ? (src
->size
- offset
) : len
;
57 struct lttng_buffer_view
lttng_buffer_view_from_dynamic_buffer(
58 const struct lttng_dynamic_buffer
*src
, size_t offset
,
61 struct lttng_buffer_view view
= { .data
= NULL
, .size
= 0 };
65 if (offset
> src
->size
) {
66 ERR("Attempt to create buffer view with invalid offset");
70 if (len
!= -1 && len
> (src
->size
- offset
)) {
71 ERR("Attempt to create buffer view with invalid length");
75 view
.data
= src
->data
+ offset
;
76 view
.size
= len
== -1 ? (src
->size
- offset
) : len
;
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