lttng-clock.h

   1 #ifndef _LTTNG_CLOCK_H
   2 #define _LTTNG_CLOCK_H
   3
   4 /*
   5  * lttng-clock.h
   6  *
   7  * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; only
  12  * version 2.1 of the License.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <linux/module.h>
  25
  26 #define LTTNG_MODULES_UUID_STR_LEN      37
  27
  28 struct lttng_trace_clock {
  29         u64 (*read64)(void);
  30         u64 (*freq)(void);
  31         int (*uuid)(char *uuid);
  32         const char *(*name)(void);
  33         const char *(*description)(void);
  34 };
  35
  36 int lttng_clock_register_plugin(struct lttng_trace_clock *ltc,
  37                 struct module *mod);
  38 void lttng_clock_unregister_plugin(struct lttng_trace_clock *ltc,
  39                 struct module *mod);
  40
  41 #endif /* _LTTNG_TRACE_CLOCK_H */