/*
- * lttng-context-pthread-id.c
- *
- * LTTng UST pthread_id context.
+ * SPDX-License-Identifier: LGPL-2.1-only
*
* Copyright (C) 2009-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * LTTng UST pthread_id context.
*/
+#define _LGPL_SOURCE
+#include <limits.h>
+#include <stddef.h>
#include <pthread.h>
#include <lttng/ust-events.h>
#include <lttng/ust-tracer.h>
-#include <lttng/ringbuffer-config.h>
+#include <lttng/ringbuffer-context.h>
+
+#include "context-internal.h"
static
-size_t pthread_id_get_size(size_t offset)
+size_t pthread_id_get_size(void *priv __attribute__((unused)),
+ size_t offset)
{
size_t size = 0;
- size += lib_ring_buffer_align(offset, lttng_alignof(unsigned long));
+ size += lttng_ust_lib_ring_buffer_align(offset, lttng_ust_rb_alignof(unsigned long));
size += sizeof(unsigned long);
return size;
}
static
-void pthread_id_record(struct lttng_ctx_field *field,
+void pthread_id_record(void *priv __attribute__((unused)),
struct lttng_ust_lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan)
+ struct lttng_ust_channel_buffer *chan)
{
unsigned long pthread_id;
pthread_id = (unsigned long) pthread_self();
- lib_ring_buffer_align_ctx(ctx, lttng_alignof(pthread_id));
- chan->ops->event_write(ctx, &pthread_id, sizeof(pthread_id));
+ chan->ops->event_write(ctx, &pthread_id, sizeof(pthread_id), lttng_ust_rb_alignof(pthread_id));
}
-int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx)
+static
+void pthread_id_get_value(void *priv __attribute__((unused)),
+ struct lttng_ust_ctx_value *value)
+{
+ value->u.s64 = (unsigned long) pthread_self();
+}
+
+static const struct lttng_ust_ctx_field *ctx_field = lttng_ust_static_ctx_field(
+ lttng_ust_static_event_field("pthread_id",
+ lttng_ust_static_type_integer(sizeof(unsigned long) * CHAR_BIT,
+ lttng_ust_rb_alignof(unsigned long) * CHAR_BIT,
+ lttng_ust_is_signed_type(unsigned long),
+ BYTE_ORDER, 10),
+ false, false),
+ pthread_id_get_size,
+ pthread_id_record,
+ pthread_id_get_value,
+ NULL, NULL);
+
+int lttng_add_pthread_id_to_ctx(struct lttng_ust_ctx **ctx)
{
- struct lttng_ctx_field *field;
+ int ret;
- field = lttng_append_context(ctx);
- if (!field)
- return -ENOMEM;
- if (lttng_find_context(*ctx, "pthread_id")) {
- lttng_remove_context_field(ctx, field);
- return -EEXIST;
+ if (lttng_find_context(*ctx, ctx_field->event_field->name)) {
+ ret = -EEXIST;
+ goto error_find_context;
}
- field->event_field.name = "pthread_id";
- field->event_field.type.atype = atype_integer;
- field->event_field.type.u.basic.integer.size = sizeof(unsigned long) * CHAR_BIT;
- field->event_field.type.u.basic.integer.alignment = lttng_alignof(unsigned long) * CHAR_BIT;
- field->event_field.type.u.basic.integer.signedness = lttng_is_signed_type(unsigned long);
- field->event_field.type.u.basic.integer.reverse_byte_order = 0;
- field->event_field.type.u.basic.integer.base = 10;
- field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
- field->get_size = pthread_id_get_size;
- field->record = pthread_id_record;
+ ret = lttng_ust_context_append(ctx, ctx_field);
+ if (ret)
+ return ret;
return 0;
+
+error_find_context:
+ return ret;
}