UST 2.0 support

[lttng-tools.git] / include / lttng / lttng-kconsumer.h

diff --git a/include/lttng/lttng-kconsumer.h b/include/lttng/lttng-kconsumer.h
new file mode 100644 (file)
index 0000000..764a3ef
--- /dev/null
+++ b/include/lttng/lttng-kconsumer.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _LTTNG_KCONSUMER_H
+#define _LTTNG_KCONSUMER_H
+
+#include <lttng/lttng-consumer.h>
+
+/*
+ * Mmap the ring buffer, read it and write the data to the tracefile.
+ *
+ * Returns the number of bytes written.
+ */
+extern int lttng_kconsumer_on_read_subbuffer_mmap(
+               struct lttng_consumer_local_data *ctx,
+               struct lttng_consumer_stream *stream, unsigned long len);
+
+/*
+ * Splice the data from the ring buffer to the tracefile.
+ *
+ * Returns the number of bytes spliced.
+ */
+extern int lttng_kconsumer_on_read_subbuffer_splice(
+               struct lttng_consumer_local_data *ctx,
+               struct lttng_consumer_stream *stream, unsigned long len);
+
+/*
+ * Take a snapshot for a specific fd
+ *
+ * Returns 0 on success, < 0 on error
+ */
+int lttng_kconsumer_take_snapshot(struct lttng_consumer_local_data *ctx,
+        struct lttng_consumer_stream *stream);
+
+/*
+ * Get the produced position
+ *
+ * Returns 0 on success, < 0 on error
+ */
+int lttng_kconsumer_get_produced_snapshot(
+        struct lttng_consumer_local_data *ctx,
+        struct lttng_consumer_stream *stream,
+        unsigned long *pos);
+
+int lttng_kconsumer_recv_cmd(struct lttng_consumer_local_data *ctx,
+               int sock, struct pollfd *consumer_sockpoll);
+
+#endif /* _LTTNG_KCONSUMER_H */