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-config.h>
18 size_t ip_get_size(struct lttng_ctx_field
*field
, size_t offset
)
22 size
+= lib_ring_buffer_align(offset
, lttng_alignof(void *));
23 size
+= sizeof(void *);
28 void ip_record(struct lttng_ctx_field
*field
,
29 struct lttng_ust_lib_ring_buffer_ctx
*ctx
,
30 struct lttng_channel
*chan
)
35 lib_ring_buffer_align_ctx(ctx
, lttng_alignof(ip
));
36 chan
->ops
->event_write(ctx
, &ip
, sizeof(ip
));
39 int lttng_add_ip_to_ctx(struct lttng_ctx
**ctx
)
41 struct lttng_ctx_field
*field
;
43 field
= lttng_append_context(ctx
);
46 if (lttng_find_context(*ctx
, "ip")) {
47 lttng_remove_context_field(ctx
, field
);
50 field
->event_field
.name
= "ip";
51 field
->event_field
.type
.atype
= atype_integer
;
52 field
->event_field
.type
.u
.integer
.size
= sizeof(void *) * CHAR_BIT
;
53 field
->event_field
.type
.u
.integer
.alignment
= lttng_alignof(void *) * CHAR_BIT
;
54 field
->event_field
.type
.u
.integer
.signedness
= lttng_is_signed_type(void *);
55 field
->event_field
.type
.u
.integer
.reverse_byte_order
= 0;
56 field
->event_field
.type
.u
.integer
.base
= 16;
57 field
->event_field
.type
.u
.integer
.encoding
= lttng_encode_none
;
58 field
->get_size
= ip_get_size
;
59 field
->record
= ip_record
;
60 lttng_context_update(*ctx
);