+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
#ifndef _LTTNG_TRACEPOINT_TYPES_H
#define _LTTNG_TRACEPOINT_TYPES_H
+#include <stdint.h>
+
/*
- * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ * Tracepoint probe definition
*
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
+ * IMPORTANT: this structure is part of the ABI between instrumented
+ * applications and UST. This structure is fixed-size because it is part
+ * of a public array of structures. Rather than extending this
+ * structure, struct lttng_ust_tracepoint should be extended instead.
*/
-struct tracepoint_probe {
- void *callback;
- void *priv;
+struct lttng_ust_tracepoint_probe {
+ void (*func)(void);
+ void *data;
};
-struct tracepoint {
+/*
+ * Tracepoint definition
+ *
+ * IMPORTANT: this structure is part of the ABI between instrumented
+ * applications and UST. Fields need to be only added at the end, never
+ * reordered, never removed.
+ *
+ * The field @struct_size should be used to determine the size of the
+ * structure. It should be queried before using additional fields added
+ * at the end of the structure.
+ */
+
+struct lttng_ust_tracepoint {
+ uint32_t struct_size;
+
const char *name;
int state;
- struct tracepoint_probe *probes;
-};
+ struct lttng_ust_tracepoint_probe *probes;
+ int *tracepoint_provider_ref;
+ const char *signature;
-struct tracepoint_lib {
- struct cds_list_head list;
- struct tracepoint tracepoints_start;
- int tracepoints_count;
+ /* End of base ABI. Fields below should be used after checking struct_size. */
};
#endif /* _LTTNG_TRACEPOINT_TYPES_H */