+#define CTF_CLOCK_SET_FIELD(ctf_clock, field) \
+ do { \
+ (ctf_clock)->field_mask |= CTF_CLOCK_ ## field; \
+ } while (0)
+
+#define CTF_CLOCK_FIELD_IS_SET(ctf_clock, field) \
+ ((ctf_clock)->field_mask & CTF_CLOCK_ ## field)
+
+#define CTF_CLOCK_GET_FIELD(ctf_clock, field) \
+ ({ \
+ assert(CTF_CLOCK_FIELD_IS_SET(ctf_clock, field)); \
+ (ctf_clock)->(field); \
+ })
+
+struct ctf_clock {
+ GQuark name;
+ GQuark uuid;
+ char *description;
+ uint64_t freq; /* frequency, in HZ */
+ /* precision in seconds is: precision * (1/freq) */
+ uint64_t precision;
+ /*
+ * The offset from Epoch is: offset_s + (offset * (1/freq))
+ * Coarse clock offset from Epoch (in seconds).
+ */
+ uint64_t offset_s;
+ /* Fine clock offset from Epoch, in (1/freq) units. */
+ uint64_t offset;
+ int absolute;
+
+ enum { /* Fields populated mask */
+ CTF_CLOCK_name = (1U << 0),
+ CTF_CLOCK_freq = (1U << 1),
+ } field_mask;
+};
+