Refactoring: Privatize ring buffer config header

[lttng-ust.git] / liblttng-ust / ust-core.c

diff --git a/liblttng-ust/ust-core.c b/liblttng-ust/ust-core.c
index 76f729a6720af105a7f120780ed2da16430b8e11..0b1fcf0b787724781e3dc855f00b41e6393e1ed1 100644 (file)
--- a/liblttng-ust/ust-core.c
+++ b/liblttng-ust/ust-core.c
@@ -1,33 +1,23 @@
 /*
- * 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);
 
-struct lttng_transport *lttng_transport_find(const char *name)
+struct lttng_transport *lttng_ust_transport_find(const char *name)
 {
        struct lttng_transport *transport;
 
@@ -38,6 +28,17 @@ struct lttng_transport *lttng_transport_find(const char *name)
        return NULL;
 }
 
+struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
+{
+       struct lttng_counter_transport *transport;
+
+       cds_list_for_each_entry(transport, &lttng_counter_transport_list, node) {
+               if (!strcmp(transport->name, name))
+                       return transport;
+       }
+       return NULL;
+}
+
 /**
  * lttng_transport_register - LTT transport registration
  * @transport: transport structure
@@ -60,11 +61,33 @@ 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_enum_desc *enum_desc)
+struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
+               struct lttng_ust_enum_desc *enum_desc)
 {
        struct lttng_enum *_enum;
        struct cds_hlist_head *head;
@@ -73,7 +96,7 @@ struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session,
        uint32_t hash;
 
        hash = jhash(enum_desc->name, name_len, 0);
-       head = &session->enums_ht.table[hash & (LTTNG_UST_ENUM_HT_SIZE - 1)];
+       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)
@@ -82,7 +105,7 @@ struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_session *session,
        return NULL;
 }
 
-size_t lttng_ust_dummy_get_size(struct lttng_ctx_field *field, size_t offset)
+size_t lttng_ust_dummy_get_size(struct lttng_ust_ctx_field *field, size_t offset)
 {
        size_t size = 0;
 
@@ -91,7 +114,7 @@ size_t lttng_ust_dummy_get_size(struct lttng_ctx_field *field, size_t offset)
        return size;
 }
 
-void lttng_ust_dummy_record(struct lttng_ctx_field *field,
+void lttng_ust_dummy_record(struct lttng_ust_ctx_field *field,
                 struct lttng_ust_lib_ring_buffer_ctx *ctx,
                 struct lttng_channel *chan)
 {
@@ -101,8 +124,8 @@ void lttng_ust_dummy_record(struct lttng_ctx_field *field,
        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)
+void lttng_ust_dummy_get_value(struct lttng_ust_ctx_field *field,
+               struct lttng_ust_ctx_value *value)
 {
        value->sel = LTTNG_UST_DYNAMIC_TYPE_NONE;
 }