2 * SPDX-License-Identifier: LGPL-2.1-only
4 * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 * LTTng UST Instruction Pointer Context.
11 #include <sys/types.h>
13 #include <lttng/ust-events.h>
14 #include <lttng/ust-tracer.h>
15 #include <lttng/ringbuffer-context.h>
17 #include "context-internal.h"
20 size_t ip_get_size(struct lttng_ust_ctx_field
*field
, size_t offset
)
24 size
+= lib_ring_buffer_align(offset
, lttng_alignof(void *));
25 size
+= sizeof(void *);
30 void ip_record(struct lttng_ust_ctx_field
*field
,
31 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
32 struct lttng_ust_channel_buffer
*chan
)
37 lib_ring_buffer_align_ctx(ctx
, lttng_alignof(ip
));
38 chan
->ops
->event_write(ctx
, &ip
, sizeof(ip
));
41 int lttng_add_ip_to_ctx(struct lttng_ust_ctx
**ctx
)
43 struct lttng_ust_ctx_field
*field
;
44 struct lttng_ust_type_common
*type
;
47 type
= lttng_ust_create_type_integer(sizeof(void *) * CHAR_BIT
,
48 lttng_alignof(void *) * CHAR_BIT
,
49 lttng_ust_is_signed_type(void *),
53 field
= lttng_append_context(ctx
);
58 if (lttng_find_context(*ctx
, "ip")) {
60 goto error_find_context
;
62 field
->event_field
->name
= strdup("ip");
63 if (!field
->event_field
->name
) {
67 field
->event_field
->type
= type
;
68 field
->get_size
= ip_get_size
;
69 field
->record
= ip_record
;
70 lttng_context_update(*ctx
);
75 lttng_remove_context_field(ctx
, field
);
77 lttng_ust_destroy_type(type
);