2 * Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * SPDX-License-Identifier: LGPL-2.1-only
8 #include <common/dynamic-array.h>
9 #include <common/buffer-view.h>
10 #include "payload-view.h"
14 bool lttng_payload_view_is_valid(const struct lttng_payload_view
*view
)
16 return view
&& lttng_buffer_view_is_valid(&view
->buffer
);
19 struct lttng_payload_view
lttng_payload_view_from_payload(
20 const struct lttng_payload
*payload
, size_t offset
,
23 return payload
? (struct lttng_payload_view
) {
24 .buffer
= lttng_buffer_view_from_dynamic_buffer(
25 &payload
->buffer
, offset
, len
),
26 ._fd_handles
= payload
->_fd_handles
,
27 } : (struct lttng_payload_view
) {};
30 struct lttng_payload_view
lttng_payload_view_from_view(
31 struct lttng_payload_view
*view
, size_t offset
,
34 return view
? (struct lttng_payload_view
) {
35 .buffer
= lttng_buffer_view_from_view(
36 &view
->buffer
, offset
, len
),
37 ._fd_handles
= view
->_fd_handles
,
38 ._iterator
.p_fd_handles_position
= view
->_iterator
.p_fd_handles_position
?:
39 &view
->_iterator
.fd_handles_position
,
40 } : (struct lttng_payload_view
) {};
43 struct lttng_payload_view
lttng_payload_view_from_dynamic_buffer(
44 const struct lttng_dynamic_buffer
*buffer
, size_t offset
,
47 return buffer
? (struct lttng_payload_view
) {
48 .buffer
= lttng_buffer_view_from_dynamic_buffer(
50 } : (struct lttng_payload_view
) {};
53 struct lttng_payload_view
lttng_payload_view_from_buffer_view(
54 const struct lttng_buffer_view
*view
, size_t offset
,
57 return view
? (struct lttng_payload_view
) {
58 .buffer
= lttng_buffer_view_from_view(
60 } : (struct lttng_payload_view
) {};
63 struct lttng_payload_view
lttng_payload_view_init_from_buffer(
64 const char *src
, size_t offset
, ptrdiff_t len
)
66 return (struct lttng_payload_view
) {
67 .buffer
= lttng_buffer_view_init(
72 int lttng_payload_view_get_fd_handle_count(
73 const struct lttng_payload_view
*payload_view
)
83 ret
= lttng_dynamic_pointer_array_get_count(&payload_view
->_fd_handles
);
88 position
= payload_view
->_iterator
.p_fd_handles_position
?
89 *payload_view
->_iterator
.p_fd_handles_position
:
90 payload_view
->_iterator
.fd_handles_position
;
91 ret
= ret
- (int) position
;
96 struct fd_handle
*lttng_payload_view_pop_fd_handle(
97 struct lttng_payload_view
*view
)
99 struct fd_handle
*handle
= NULL
;
100 size_t fd_handle_count
;
107 fd_handle_count
= lttng_payload_view_get_fd_handle_count(view
);
108 if (fd_handle_count
== 0) {
112 pos
= view
->_iterator
.p_fd_handles_position
?
113 view
->_iterator
.p_fd_handles_position
:
114 &view
->_iterator
.fd_handles_position
;
115 handle
= lttng_dynamic_pointer_array_get_pointer(&view
->_fd_handles
,
118 fd_handle_get(handle
);
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