liblttng-ust/tracepoint-internal.h

   1 #ifndef _LTTNG_TRACEPOINT_INTERNAL_H
   2 #define _LTTNG_TRACEPOINT_INTERNAL_H
   3
   4 /*
   5  * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation;
  10  * version 2.1 of the License.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  20  */
  21
  22 #include <urcu/list.h>
  23 #include <urcu-bp.h>
  24 #include <lttng/tracepoint-types.h>
  25
  26 struct tracepoint_lib {
  27         struct cds_list_head list;
  28         struct tracepoint * const *tracepoints_start;
  29         int tracepoints_count;
  30 };
  31
  32 struct tracepoint_iter {
  33         struct tracepoint_lib *lib;
  34         struct tracepoint * const *tracepoint;
  35 };
  36
  37 extern int tracepoint_probe_register_noupdate(const char *name, void *callback, void *priv);
  38 extern int tracepoint_probe_unregister_noupdate(const char *name, void *callback, void *priv);
  39 extern void tracepoint_probe_update_all(void);
  40
  41 extern void tracepoint_iter_start(struct tracepoint_iter *iter);
  42 extern void tracepoint_iter_next(struct tracepoint_iter *iter);
  43 extern void tracepoint_iter_stop(struct tracepoint_iter *iter);
  44 extern void tracepoint_iter_reset(struct tracepoint_iter *iter);
  45 extern int tracepoint_get_iter_range(struct tracepoint * const **tracepoint,
  46         struct tracepoint * const *begin, struct tracepoint * const *end);
  47
  48 /*
  49  * call after disconnection of last probe implemented within a
  50  * shared object before unmapping the library that contains the probe.
  51  */
  52 static inline void tracepoint_synchronize_unregister(void)
  53 {
  54         synchronize_rcu_bp();
  55 }
  56
  57 extern void init_tracepoint(void);
  58 extern void exit_tracepoint(void);
  59
  60 #endif /* _LTTNG_TRACEPOINT_INTERNAL_H */