src/bin/lttng-sessiond/ust-clock.h

   1 /*
   2  * Copyright (C) 2010 Pierre-Marc Fournier
   3  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * SPDX-License-Identifier: GPL-2.0-only
   6  *
   7  */
   8
   9 #ifndef _UST_CLOCK_H
  10 #define _UST_CLOCK_H
  11
  12 #include <common/compat/time.h>
  13 #include <sys/time.h>
  14 #include <stdint.h>
  15 #include <stddef.h>
  16 #include <stdio.h>
  17 #include <urcu/system.h>
  18 #include <urcu/arch.h>
  19 #include <lttng/ust-clock.h>
  20
  21 #include <common/uuid.h>
  22
  23 static __inline__
  24 uint64_t trace_clock_read64(void)
  25 {
  26         uint64_t clock_value = 0;
  27         lttng_ust_clock_read64_function read64_cb;
  28
  29         if (lttng_ust_trace_clock_get_read64_cb(&read64_cb)) {
  30                 goto end;
  31         }
  32
  33         clock_value = read64_cb();
  34 end:
  35         return clock_value;
  36 }
  37
  38 static __inline__
  39 uint64_t trace_clock_freq(void)
  40 {
  41         uint64_t frequency = 0;
  42         lttng_ust_clock_freq_function get_freq_cb;
  43
  44         if (lttng_ust_trace_clock_get_freq_cb(&get_freq_cb)) {
  45                 goto end;
  46         }
  47
  48         frequency = get_freq_cb();
  49 end:
  50         return frequency;
  51 }
  52
  53 static __inline__
  54 int trace_clock_uuid(char *uuid)
  55 {
  56         int ret;
  57         lttng_ust_clock_uuid_function get_uuid_cb;
  58
  59         if (lttng_ust_trace_clock_get_uuid_cb(&get_uuid_cb)) {
  60                 ret = -EINVAL;
  61                 goto end;
  62         }
  63
  64         ret = get_uuid_cb(uuid);
  65 end:
  66         return ret;
  67
  68 }
  69
  70 static __inline__
  71 const char *trace_clock_name(void)
  72 {
  73         const char *name;
  74         lttng_ust_clock_name_function get_name_cb;
  75
  76         if (lttng_ust_trace_clock_get_name_cb(&get_name_cb)) {
  77                 name = NULL;
  78                 goto end;
  79         }
  80
  81         name = get_name_cb();
  82 end:
  83         return name;
  84 }
  85
  86 static __inline__
  87 const char *trace_clock_description(void)
  88 {
  89         const char *description;
  90         lttng_ust_clock_description_function get_description_cb;
  91
  92         if (lttng_ust_trace_clock_get_description_cb(&get_description_cb)) {
  93                 description = NULL;
  94                 goto end;
  95         }
  96
  97         description = get_description_cb();
  98 end:
  99         return description;
 100 }
 101
 102 #endif /* _UST_CLOCK_H */