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Code Releases Activity

TIMER: Add correct sim_activate_time functionality for all timer cases.

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Also:
- allow a timer to dynamically stop itself (by calling sim_rtcn_calb
   with tps=0), and then to start the internal timer to provide a calibration
   baseline if necessary.
- Fix coschedule interval computation when the queue is empty.
- Properly select the correct timer for coscheduling without a specific tmr
- Properly adjust the coschedule queue's next time value when entries are
   canceled.
- Cleaned up throttling to behave well with all potential throttling rates and
   to make visible what is happening when boundaries are reached.
This commit is contained in:
Mark Pizzolato
2016-12-15 09:57:34 -08:00
parent 7022f0c1b2
commit ae52f4c331
5 changed files with 211 additions and 96 deletions
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6
sim_timer.h
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@@ -87,7 +87,7 @@ int clock_gettime(int clock_id, struct timespec *tp);
#define SIM_THROT_WINIT 1000 /* cycles to skip */
#define SIM_THROT_WST 10000 /* initial wait */
#define SIM_THROT_WMUL 4 /* multiplier */
#define SIM_THROT_WMIN 100 /* min wait */
#define SIM_THROT_WMIN 50 /* min wait */
#define SIM_THROT_DRIFT_PCT 5 /* drift percentage for recalibrate */
#define SIM_THROT_MSMIN 10 /* min for measurement */
#define SIM_THROT_NONE 0 /* throttle parameters */
@@ -95,6 +95,9 @@ int clock_gettime(int clock_id, struct timespec *tp);
#define SIM_THROT_KCYC 2 /* KiloCycles Per Sec */
#define SIM_THROT_PCT 3 /* Max Percent of host CPU */
#define SIM_THROT_SPC 4 /* Specific periodic Delay */
#define SIM_THROT_STATE_INIT 0 /* Starting */
#define SIM_THROT_STATE_TIME 1 /* Checking Time */
#define SIM_THROT_STATE_THROTTLE 2 /* Throttling */
#define TIMER_DBG_IDLE 0x001 /* Debug Flag for Idle Debugging */
#define TIMER_DBG_QUEUE 0x002 /* Debug Flag for Asynch Queue Debugging */
@@ -132,6 +135,7 @@ t_stat sim_timer_change_asynch (void);
t_stat sim_timer_activate (UNIT *uptr, int32 interval);
t_stat sim_timer_activate_after (UNIT *uptr, uint32 usec_delay);
int32 sim_timer_activate_time (UNIT *uptr);
t_bool sim_timer_is_active (UNIT *uptr);
t_stat sim_register_clock_unit (UNIT *uptr);
t_stat sim_register_clock_unit_tmr (UNIT *uptr, int32 tmr);
t_stat sim_clock_coschedule (UNIT *uptr, int32 interval);