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libsysprof-analyze: add SysprofTimeSeries

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This includes a helper to generate timeseries items such as marks which
have a point in time and optionally a duration.

The TimeSpan has also been beefed up to gain a few operations that are
useful for implementing that.
This commit is contained in:
Christian Hergert
2023-06-16 13:07:40 -07:00
parent aa3aacc721
commit d752e2eec2
5 changed files with 313 additions and 0 deletions
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52
src/libsysprof-analyze/sysprof-time-span.h
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@ -41,4 +41,56 @@ SysprofTimeSpan *sysprof_time_span_copy (const SysprofTimeSpan *self);
SYSPROF_AVAILABLE_IN_ALL
void sysprof_time_span_free (SysprofTimeSpan *self);
static inline SysprofTimeSpan
sysprof_time_span_relative_to (SysprofTimeSpan time_span,
gint64 point)
{
return (SysprofTimeSpan) {
time_span.begin_nsec - point,
time_span.end_nsec - point
};
}
static inline void
sysprof_time_span_normalize (SysprofTimeSpan time_span,
SysprofTimeSpan allowed,
float values[restrict 2])
{
double duration = allowed.end_nsec - allowed.begin_nsec;
time_span = sysprof_time_span_relative_to (time_span, allowed.begin_nsec);
values[0] = time_span.begin_nsec / duration;
values[1] = time_span.end_nsec / duration;
}
static inline SysprofTimeSpan
sysprof_time_span_order (SysprofTimeSpan time_span)
{
if (time_span.begin_nsec > time_span.end_nsec)
return (SysprofTimeSpan) { time_span.end_nsec, time_span.begin_nsec };
return time_span;
}
static inline gboolean
sysprof_time_span_clamp (SysprofTimeSpan *time_span,
SysprofTimeSpan allowed)
{
if (time_span->end_nsec <= allowed.begin_nsec ||
time_span->begin_nsec >= allowed.end_nsec)
{
time_span->begin_nsec = time_span->end_nsec = 0;
return FALSE;
}
if (time_span->begin_nsec < allowed.begin_nsec)
time_span->begin_nsec = allowed.begin_nsec;
if (time_span->end_nsec > allowed.end_nsec)
time_span->end_nsec = allowed.end_nsec;
return TRUE;
}
G_END_DECLS