include/babeltrace2/trace-ir/clock-snapshot-set-internal.h

   1 #ifndef BABELTRACE_GRAPH_CLOCK_SNAPSHOT_SET_H
   2 #define BABELTRACE_GRAPH_CLOCK_SNAPSHOT_SET_H
   3
   4 /*
   5  * Copyright 2018 Philippe Proulx <pproulx@efficios.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include <stdint.h>
  27 #include <glib.h>
  28 #include <babeltrace2/trace-ir/clock-snapshot-internal.h>
  29 #include <babeltrace2/trace-ir/clock-class-internal.h>
  30 #include <babeltrace2/assert-internal.h>
  31
  32 struct bt_clock_snapshot_set {
  33         /* Unique objects owned by this */
  34         GPtrArray *clock_snapshots;
  35
  36         /* Weak; points to one of the clock snapshots above */
  37         struct bt_clock_snapshot *default_cs;
  38 };
  39
  40 static inline
  41 int bt_clock_snapshot_set_initialize(struct bt_clock_snapshot_set *cs_set)
  42 {
  43         int ret = 0;
  44
  45         cs_set->clock_snapshots = g_ptr_array_sized_new(1);
  46         if (!cs_set->clock_snapshots) {
  47 #ifdef BT_LOGE_STR
  48                 BT_LOGE_STR("Failed to allocate one GPtrArray.");
  49 #endif
  50
  51                 ret = -1;
  52                 goto end;
  53         }
  54
  55         cs_set->default_cs = NULL;
  56
  57 end:
  58         return ret;
  59 }
  60
  61 static inline
  62 void bt_clock_snapshot_set_reset(struct bt_clock_snapshot_set *cs_set)
  63 {
  64         uint64_t i;
  65
  66         BT_ASSERT(cs_set);
  67         BT_ASSERT(cs_set->clock_snapshots);
  68
  69         for (i = 0; i < cs_set->clock_snapshots->len; i++) {
  70                 struct bt_clock_snapshot *cs = cs_set->clock_snapshots->pdata[i];
  71
  72                 BT_ASSERT(cs);
  73                 bt_clock_snapshot_reset(cs);
  74         }
  75
  76         cs_set->default_cs = NULL;
  77 }
  78
  79 static inline
  80 void bt_clock_snapshot_set_finalize(struct bt_clock_snapshot_set *cs_set)
  81 {
  82         uint64_t i;
  83
  84         BT_ASSERT(cs_set);
  85
  86         if (cs_set->clock_snapshots) {
  87                 for (i = 0; i < cs_set->clock_snapshots->len; i++) {
  88                         struct bt_clock_snapshot *cs =
  89                                 cs_set->clock_snapshots->pdata[i];
  90
  91                         BT_ASSERT(cs);
  92                         bt_clock_snapshot_recycle(cs);
  93                 }
  94
  95                 g_ptr_array_free(cs_set->clock_snapshots, TRUE);
  96         }
  97
  98         cs_set->default_cs = NULL;
  99 }
 100
 101 static inline
 102 int bt_clock_snapshot_set_set_clock_snapshot(struct bt_clock_snapshot_set *cs_set,
 103                 struct bt_clock_class *cc, uint64_t raw_value)
 104 {
 105         int ret = 0;
 106         struct bt_clock_snapshot *clock_snapshot = NULL;
 107         uint64_t i;
 108
 109         BT_ASSERT(cs_set);
 110         BT_ASSERT(cc);
 111
 112         /*
 113          * Check if we already have a value for this clock class.
 114          *
 115          * TODO: When we have many clock classes, make this more
 116          * efficient.
 117          */
 118         for (i = 0; i < cs_set->clock_snapshots->len; i++) {
 119                 struct bt_clock_snapshot *cs = cs_set->clock_snapshots->pdata[i];
 120
 121                 BT_ASSERT(cs);
 122
 123                 if (cs->clock_class == cc) {
 124                         clock_snapshot = cs;
 125                         break;
 126                 }
 127         }
 128
 129         if (!clock_snapshot) {
 130                 clock_snapshot = bt_clock_snapshot_create(cc);
 131                 if (!clock_snapshot) {
 132 #ifdef BT_LIB_LOGE
 133                         BT_LIB_LOGE("Cannot create a clock snapshot from a clock class: "
 134                                 "%![cc-]+K", cc);
 135 #endif
 136
 137                         ret = -1;
 138                         goto end;
 139                 }
 140
 141                 g_ptr_array_add(cs_set->clock_snapshots, clock_snapshot);
 142         }
 143
 144         bt_clock_snapshot_set_raw_value(clock_snapshot, raw_value);
 145
 146 end:
 147         return ret;
 148 }
 149
 150 static inline
 151 void  bt_clock_snapshot_set_set_default_clock_snapshot(
 152                 struct bt_clock_snapshot_set *cs_set, uint64_t raw_value)
 153 {
 154         BT_ASSERT(cs_set);
 155         BT_ASSERT(cs_set->default_cs);
 156         bt_clock_snapshot_set_raw_value(cs_set->default_cs, raw_value);
 157 }
 158
 159 #endif /* BABELTRACE_GRAPH_CLOCK_SNAPSHOT_SET_H */