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Start using the monotonic API in GLib ≥ 2.27

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Starting from the 2.27 cycle, GLib is exposing a monotonic clock with
microseconds granularity throughout the time-based API. We can start
using it, given that the old, non-monotonic version is going to be
deprecated by the same cycle.
This commit is contained in:
Emmanuele Bassi
2010-11-07 16:20:51 +00:00
parent 68d7a5e847
commit 8f60d5a3a2
4 changed files with 49 additions and 18 deletions
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27
clutter/clutter-master-clock.c
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@ -170,7 +170,6 @@ master_clock_is_running (ClutterMasterClock *master_clock)
static gint
master_clock_next_frame_delay (ClutterMasterClock *master_clock)
{
GTimeVal source_time;
gint64 now, next;
if (!master_clock_is_running (master_clock))
@ -207,8 +206,16 @@ master_clock_next_frame_delay (ClutterMasterClock *master_clock)
/* Otherwise, wait at least 1/frame_rate seconds since we last
* started a frame
*/
g_source_get_current_time (master_clock->source, &source_time);
now = source_time.tv_sec * 1000000L + source_time.tv_usec;
#if GLIB_CHECK_VERSION (2, 27, 3)
now = g_source_get_time (master_clock->source);
#else
{
GTimeVal source_time;
g_source_get_current_time (master_clock->source, &source_time);
now = source_time.tv_sec * 1000000L + source_time.tv_usec;
}
#endif
next = master_clock->prev_tick;
/* If time has gone backwards then there's no way of knowing how
@ -301,7 +308,6 @@ clutter_clock_dispatch (GSource *source,
ClutterMasterClock *master_clock = clock_source->master_clock;
ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
gboolean stages_updated = FALSE;
GTimeVal source_time;
GSList *stages, *l;
CLUTTER_STATIC_TIMER (master_dispatch_timer,
@ -322,9 +328,16 @@ clutter_clock_dispatch (GSource *source,
clutter_threads_enter ();
/* Get the time to use for this frame */
g_source_get_current_time (source, &source_time);
master_clock->cur_tick = source_time.tv_sec * 1000000L
+ source_time.tv_usec;
#if GLIB_CHECK_VERSION (2, 27, 3)
master_clock->cur_tick = g_source_get_time (source);
#else
{
GTimeVal source_time;
g_source_get_current_time (source, &source_time);
master_clock->cur_tick = source_time.tv_sec * 1000000L
+ source_time.tv_usec;
}
#endif
/* We need to protect ourselves against stages being destroyed during
* event handling