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 #define TRACE_DEFAULT   TRACE_DEBUG_LINE
  27
  28 struct tracepoint_lib {
  29         struct cds_list_head list;      /* list of registered libs */
  30         struct tracepoint * const *tracepoints_start;
  31         int tracepoints_count;
  32         struct cds_list_head callsites;
  33 };
  34
  35 extern int tracepoint_probe_register_noupdate(const char *name,
  36                 void (*callback)(void), void *priv,
  37                 const char *signature);
  38 extern int tracepoint_probe_unregister_noupdate(const char *name,
  39                 void (*callback)(void), void *priv);
  40 extern void tracepoint_probe_update_all(void);
  41
  42 /*
  43  * call after disconnection of last probe implemented within a
  44  * shared object before unmapping the library that contains the probe.
  45  */
  46 static inline void tracepoint_synchronize_unregister(void)
  47 {
  48         synchronize_rcu_bp();
  49 }
  50
  51 extern void init_tracepoint(void);
  52 extern void exit_tracepoint(void);
  53
  54 #endif /* _LTTNG_TRACEPOINT_INTERNAL_H */