X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=liblttng-ust%2Fust-core.c;h=1f291c4ed65c4f7d33b1fd3742dffd6855013b46;hb=65c48d6a4b532436c000f8b3b9b771cfe9c07491;hp=f9c00ff07bda1d72bea3f42d1ad5d999023ca908;hpb=7dd08bec735b428479201f9f84d59c78deabdf57;p=lttng-ust.git

diff --git a/liblttng-ust/ust-core.c b/liblttng-ust/ust-core.c
index f9c00ff0..1f291c4e 100644
--- a/liblttng-ust/ust-core.c
+++ b/liblttng-ust/ust-core.c
@@ -1,47 +1,38 @@
 /*
- * ust-core.c
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
  * Copyright (C) 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
  */
 
+#define _LGPL_SOURCE
+#include <stdint.h>
+#include <stddef.h>
 #include <stdlib.h>
-#include <lttng/ust-events.h>
+
+#include "ust-events-internal.h"
 #include <usterr-signal-safe.h>
+#include "lttng-tracer-core.h"
+#include "jhash.h"
 
 static CDS_LIST_HEAD(lttng_transport_list);
+static CDS_LIST_HEAD(lttng_counter_transport_list);
 
-void init_usterr(void)
+struct lttng_transport *lttng_ust_transport_find(const char *name)
 {
-	char *ust_debug;
-
-	if (ust_loglevel == UST_LOGLEVEL_UNKNOWN) {
-		ust_debug = getenv("LTTNG_UST_DEBUG");
-		if (ust_debug)
-			ust_loglevel = UST_LOGLEVEL_DEBUG;
-		else
-			ust_loglevel = UST_LOGLEVEL_NORMAL;
+	struct lttng_transport *transport;
+
+	cds_list_for_each_entry(transport, &lttng_transport_list, node) {
+		if (!strcmp(transport->name, name))
+			return transport;
 	}
+	return NULL;
 }
 
-struct lttng_transport *lttng_transport_find(const char *name)
+struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
 {
-	struct lttng_transport *transport;
+	struct lttng_counter_transport *transport;
 
-	cds_list_for_each_entry(transport, &lttng_transport_list, node) {
+	cds_list_for_each_entry(transport, &lttng_counter_transport_list, node) {
 		if (!strcmp(transport->name, name))
 			return transport;
 	}
@@ -69,3 +60,80 @@ void lttng_transport_unregister(struct lttng_transport *transport)
 {
 	cds_list_del(&transport->node);
 }
+
+/**
+ * lttng_counter_transport_register - LTTng counter transport registration
+ * @transport: transport structure
+ *
+ * Registers a counter transport which can be used as output to extract
+ * the data out of LTTng. Called with ust_lock held.
+ */
+void lttng_counter_transport_register(struct lttng_counter_transport *transport)
+{
+	cds_list_add_tail(&transport->node, &lttng_counter_transport_list);
+}
+
+/**
+ * lttng_counter_transport_unregister - LTTng counter transport unregistration
+ * @transport: transport structure
+ * Called with ust_lock held.
+ */
+void lttng_counter_transport_unregister(struct lttng_counter_transport *transport)
+{
+	cds_list_del(&transport->node);
+}
+
+/*
+ * Needed by comm layer.
+ */
+struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session,
+		const struct lttng_ust_enum_desc *enum_desc)
+{
+	struct lttng_enum *_enum;
+	struct cds_hlist_head *head;
+	struct cds_hlist_node *node;
+	size_t name_len = strlen(enum_desc->name);
+	uint32_t hash;
+
+	hash = jhash(enum_desc->name, name_len, 0);
+	head = &session->priv->enums_ht.table[hash & (LTTNG_UST_ENUM_HT_SIZE - 1)];
+	cds_hlist_for_each_entry(_enum, node, head, hlist) {
+		assert(_enum->desc);
+		if (_enum->desc == enum_desc)
+			return _enum;
+	}
+	return NULL;
+}
+
+size_t lttng_ust_dummy_get_size(struct lttng_ctx_field *field, size_t offset)
+{
+	size_t size = 0;
+
+	size += lib_ring_buffer_align(offset, lttng_alignof(char));
+	size += sizeof(char);		/* tag */
+	return size;
+}
+
+void lttng_ust_dummy_record(struct lttng_ctx_field *field,
+		 struct lttng_ust_lib_ring_buffer_ctx *ctx,
+		 struct lttng_channel *chan)
+{
+	char sel_char = (char) LTTNG_UST_DYNAMIC_TYPE_NONE;
+
+	lib_ring_buffer_align_ctx(ctx, lttng_alignof(sel_char));
+	chan->ops->event_write(ctx, &sel_char, sizeof(sel_char));
+}
+
+void lttng_ust_dummy_get_value(struct lttng_ctx_field *field,
+		struct lttng_ctx_value *value)
+{
+	value->sel = LTTNG_UST_DYNAMIC_TYPE_NONE;
+}
+
+int lttng_context_is_app(const char *name)
+{
+	if (strncmp(name, "$app.", strlen("$app.")) != 0) {
+		return 0;
+	}
+	return 1;
+}