src/lib/trace-ir/clock-snapshot.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 #ifndef BABELTRACE_TRACE_IR_CLOCK_SNAPSHOT_INTERNAL_H
   8 #define BABELTRACE_TRACE_IR_CLOCK_SNAPSHOT_INTERNAL_H
   9
  10 #include "lib/object.h"
  11 #include <stdbool.h>
  12 #include <stdint.h>
  13
  14 #include "clock-class.h"
  15 #include "utils.h"
  16
  17 struct bt_clock_class;
  18
  19 struct bt_clock_snapshot {
  20         struct bt_object base;
  21         struct bt_clock_class *clock_class;
  22         uint64_t value_cycles;
  23         bool ns_from_origin_overflows;
  24         int64_t ns_from_origin;
  25         bool is_set;
  26 };
  27
  28 static inline
  29 void bt_clock_snapshot_set(struct bt_clock_snapshot *clock_snapshot)
  30 {
  31         BT_ASSERT_DBG(clock_snapshot);
  32         clock_snapshot->is_set = true;
  33 }
  34
  35 static inline
  36 void bt_clock_snapshot_reset(struct bt_clock_snapshot *clock_snapshot)
  37 {
  38         BT_ASSERT_DBG(clock_snapshot);
  39         clock_snapshot->is_set = false;
  40 }
  41
  42 static inline
  43 void set_ns_from_origin(struct bt_clock_snapshot *clock_snapshot)
  44 {
  45         if (bt_util_ns_from_origin_clock_class(clock_snapshot->clock_class,
  46                         clock_snapshot->value_cycles,
  47                         &clock_snapshot->ns_from_origin)) {
  48                 clock_snapshot->ns_from_origin_overflows = true;
  49         }
  50 }
  51
  52 static inline
  53 void bt_clock_snapshot_set_raw_value(struct bt_clock_snapshot *clock_snapshot,
  54                 uint64_t cycles)
  55 {
  56         BT_ASSERT_DBG(clock_snapshot);
  57         clock_snapshot->value_cycles = cycles;
  58         set_ns_from_origin(clock_snapshot);
  59         bt_clock_snapshot_set(clock_snapshot);
  60 }
  61
  62 void bt_clock_snapshot_destroy(struct bt_clock_snapshot *clock_snapshot);
  63
  64 struct bt_clock_snapshot *bt_clock_snapshot_new(struct bt_clock_class *clock_class);
  65
  66 struct bt_clock_snapshot *bt_clock_snapshot_create(
  67                 struct bt_clock_class *clock_class);
  68
  69 void bt_clock_snapshot_recycle(struct bt_clock_snapshot *clock_snapshot);
  70
  71 #endif /* BABELTRACE_TRACE_IR_CLOCK_SNAPSHOT_INTERNAL_H */