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Reworked all asynch queues to always link using the unit a_next field instead of the next field.

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This commit is contained in:
Mark Pizzolato 2013-05-08 09:34:53 -07:00
parent 141b6e834a
commit ddb10425e7
3 changed files with 61 additions and 64 deletions
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4
scp.c
View file

@ -2923,7 +2923,7 @@ if (sim_wallclock_queue == QUEUE_LIST_END)
else {
fprintf (st, "%s wall clock event queue status, time = %.0f\n",
sim_name, sim_time);
for (uptr = sim_wallclock_queue; uptr != QUEUE_LIST_END; uptr = uptr->next) {
for (uptr = sim_wallclock_queue; uptr != QUEUE_LIST_END; uptr = uptr->a_next) {
if ((dptr = find_dev_from_unit (uptr)) != NULL) {
fprintf (st, " %s", sim_dname (dptr));
if (dptr->numunits > 1)
@ -2938,7 +2938,7 @@ else {
if (sim_clock_cosched_queue != QUEUE_LIST_END) {
fprintf (st, "%s clock (%s) co-schedule event queue status, time = %.0f\n",
sim_name, sim_uname(sim_clock_unit), sim_time);
for (uptr = sim_clock_cosched_queue; uptr != QUEUE_LIST_END; uptr = uptr->next) {
for (uptr = sim_clock_cosched_queue; uptr != QUEUE_LIST_END; uptr = uptr->a_next) {
if ((dptr = find_dev_from_unit (uptr)) != NULL) {
fprintf (st, " %s", sim_dname (dptr));
if (dptr->numunits > 1)

92
sim_defs.h
View file

@ -785,13 +785,13 @@ extern int32 sim_asynch_inst_latency;
if ((uptr)->a_cancel) \
(uptr)->a_cancel (uptr); \
else { \
if ((uptr)->next) { \
AIO_UPDATE_QUEUE; \
if ((uptr)->a_next) { \
UNIT *cptr; \
AIO_UPDATE_QUEUE; \
pthread_mutex_lock (&sim_timer_lock); \
if ((uptr) == sim_wallclock_queue) { \
sim_wallclock_queue = (uptr)->next; \
(uptr)->next = NULL; \
sim_wallclock_queue = (uptr)->a_next; \
(uptr)->a_next = NULL; \
sim_debug (SIM_DBG_EVENT, sim_dflt_dev, "Canceling Timer Event for %s\n", sim_uname(uptr));\
sim_timer_event_canceled = TRUE; \
pthread_cond_signal (&sim_timer_wake); \
@ -799,30 +799,30 @@ extern int32 sim_asynch_inst_latency;
else \
for (cptr = sim_wallclock_queue; \
(cptr != QUEUE_LIST_END); \
cptr = cptr->next) \
if (cptr->next == (uptr)) { \
cptr->next = (uptr)->next; \
(uptr)->next = NULL; \
cptr = cptr->a_next) \
if (cptr->a_next == (uptr)) { \
cptr->a_next = (uptr)->a_next; \
(uptr)->a_next = NULL; \
sim_debug (SIM_DBG_EVENT, sim_dflt_dev, "Canceling Timer Event for %s\n", sim_uname(uptr));\
break; \
} \
if ((uptr)->next == NULL) \
if ((uptr)->a_next == NULL) \
(uptr)->a_due_time = (uptr)->a_usec_delay = 0; \
else { \
if ((uptr) == sim_clock_cosched_queue) { \
sim_clock_cosched_queue = (uptr)->next; \
(uptr)->next = NULL; \
sim_clock_cosched_queue = (uptr)->a_next; \
(uptr)->a_next = NULL; \
} \
else \
for (cptr = sim_clock_cosched_queue; \
(cptr != QUEUE_LIST_END); \
cptr = cptr->next) \
if (cptr->next == (uptr)) { \
cptr->next = (uptr)->next; \
(uptr)->next = NULL; \
cptr = cptr->a_next) \
if (cptr->a_next == (uptr)) { \
cptr->a_next = (uptr)->a_next; \
(uptr)->a_next = NULL; \
break; \
} \
if ((uptr)->next == NULL) { \
if ((uptr)->a_next == NULL) { \
sim_debug (SIM_DBG_EVENT, sim_dflt_dev, "Canceling Clock Coscheduling Event for %s\n", sim_uname(uptr));\
} \
} \
@ -854,19 +854,19 @@ extern int32 sim_asynch_inst_latency;
if ((uptr)->a_cancel) \
(uptr)->a_cancel (uptr); \
else { \
AIO_UPDATE_QUEUE; \
if (((uptr)->dynflags & UNIT_TM_POLL) && \
!((uptr)->next) && !((uptr)->a_next)) { \
(uptr)->a_polling_now = FALSE; \
sim_tmxr_poll_count -= (uptr)->a_poll_waiter_count; \
(uptr)->a_poll_waiter_count = 0; \
} \
if ((uptr)->next) { \
if ((uptr)->a_next) { \
UNIT *cptr; \
AIO_UPDATE_QUEUE; \
pthread_mutex_lock (&sim_timer_lock); \
if ((uptr) == sim_wallclock_queue) { \
sim_wallclock_queue = (uptr)->next; \
(uptr)->next = NULL; \
sim_wallclock_queue = (uptr)->a_next; \
(uptr)->a_next = NULL; \
sim_debug (SIM_DBG_EVENT, sim_dflt_dev, "Canceling Timer Event for %s\n", sim_uname(uptr));\
sim_timer_event_canceled = TRUE; \
pthread_cond_signal (&sim_timer_wake); \
@ -874,30 +874,30 @@ extern int32 sim_asynch_inst_latency;
else \
for (cptr = sim_wallclock_queue; \
(cptr != QUEUE_LIST_END); \
cptr = cptr->next) \
if (cptr->next == (uptr)) { \
cptr->next = (uptr)->next; \
(uptr)->next = NULL; \
cptr = cptr->a_next) \
if (cptr->a_next == (uptr)) { \
cptr->a_next = (uptr)->a_next; \
(uptr)->a_next = NULL; \
sim_debug (SIM_DBG_EVENT, sim_dflt_dev, "Canceling Timer Event for %s\n", sim_uname(uptr));\
break; \
} \
if ((uptr)->next == NULL) \
if ((uptr)->a_next == NULL) \
(uptr)->a_due_time = (uptr)->a_usec_delay = 0; \
else { \
if ((uptr) == sim_clock_cosched_queue) { \
sim_clock_cosched_queue = (uptr)->next; \
(uptr)->next = NULL; \
sim_clock_cosched_queue = (uptr)->a_next; \
(uptr)->a_next = NULL; \
} \
else \
for (cptr = sim_clock_cosched_queue; \
(cptr != QUEUE_LIST_END); \
cptr = cptr->next) \
if (cptr->next == (uptr)) { \
cptr->next = (uptr)->next; \
(uptr)->next = NULL; \
cptr = cptr->a_next) \
if (cptr->a_next == (uptr)) { \
cptr->a_next = (uptr)->a_next; \
(uptr)->a_next = NULL; \
break; \
} \
if ((uptr)->next == NULL) { \
if ((uptr)->a_next == NULL) { \
sim_debug (SIM_DBG_EVENT, sim_dflt_dev, "Canceling Clock Coscheduling Event for %s\n", sim_uname(uptr));\
} \
} \
@ -917,7 +917,7 @@ extern int32 sim_asynch_inst_latency;
pthread_mutex_lock (&sim_timer_lock); \
for (cptr = sim_wallclock_queue; \
cptr != QUEUE_LIST_END; \
cptr = cptr->next) \
cptr = cptr->a_next) \
if ((uptr) == cptr) { \
double inst_per_sec = sim_timer_inst_per_sec (); \
int32 result; \
@ -1028,8 +1028,10 @@ extern int32 sim_asynch_inst_latency;
else \
a_event_time = uptr->a_event_time; \
uptr->a_activate_call (uptr, a_event_time); \
if (uptr->a_check_completion) \
if (uptr->a_check_completion) { \
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Calling Completion Check for asynch event on %s\n", sim_uname(uptr));\
uptr->a_check_completion (uptr); \
} \
} \
} else (void)0
#define AIO_ACTIVATE(caller, uptr, event_time) \
@ -1063,20 +1065,16 @@ extern int32 sim_asynch_inst_latency;
return SCPE_OK; \
} else (void)0
#define AIO_ACTIVATE_LIST(caller, list, event_time) \
if (1) { \
if (list) { \
UNIT *ouptr, *q, *qe; \
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Queueing Asynch events for %s after %d instructions\n", sim_uname(list), event_time);\
for (qe=(list); qe->next != QUEUE_LIST_END;) { \
for (qe=(list); qe->a_next != QUEUE_LIST_END;) { \
qe->a_event_time = event_time; \
qe->a_activate_call = caller; \
qe->a_next = qe->next; \
qe->next = NULL; \
qe = qe->a_next; \
} \
qe->a_event_time = event_time; \
qe->a_activate_call = caller; \
qe->a_next = QUEUE_LIST_END; \
qe->next = NULL; \
ouptr = (list); \
do { \
do \
@ -1137,7 +1135,7 @@ extern int32 sim_asynch_inst_latency;
while (sim_asynch_queue != QUEUE_LIST_END) { /* List !Empty */ \
int32 a_event_time; \
uptr = sim_asynch_queue; \
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "found asynch event for %s after %d instructions\n", sim_uname(uptr), uptr->a_event_time);\
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Migrating Asynch event for %s after %d instructions\n", sim_uname(uptr), uptr->a_event_time);\
sim_asynch_queue = uptr->a_next; \
uptr->a_next = NULL; /* hygiene */ \
if (uptr->a_activate_call != &sim_activate_notbefore) { \
@ -1148,10 +1146,11 @@ extern int32 sim_asynch_inst_latency;
else \
a_event_time = uptr->a_event_time; \
AIO_UNLOCK; \
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "calling completion check for asynch event on %s\n", sim_uname(uptr));\
uptr->a_activate_call (uptr, a_event_time); \
if (uptr->a_check_completion) \
if (uptr->a_check_completion) { \
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Calling Completion Check for asynch event on %s\n", sim_uname(uptr));\
uptr->a_check_completion (uptr); \
} \
AIO_LOCK; \
} \
AIO_UNLOCK; \
@ -1177,19 +1176,16 @@ extern int32 sim_asynch_inst_latency;
return SCPE_OK; \
} else (void)0
#define AIO_ACTIVATE_LIST(caller, list, event_time) \
if (1) { \
if (list) { \
UNIT *qe; \
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Queueing Asynch events for %s after %d instructions\n", sim_uname(list), event_time);\
for (qe=list; qe->next != QUEUE_LIST_END;) { \
for (qe=list; qe->a_next != QUEUE_LIST_END;) { \
qe->a_event_time = event_time; \
qe->a_activate_call = caller; \
qe->a_next = qe->next; \
qe->next = NULL; \
qe = qe->a_next; \
} \
qe->a_event_time = event_time; \
qe->a_activate_call = caller; \
qe->next = NULL; \
AIO_LOCK; \
qe->a_next = sim_asynch_queue; \
sim_asynch_queue = list; \

29
sim_timer.c
View file

@ -1185,18 +1185,18 @@ while (sim_asynch_enabled && sim_asynch_timer && sim_is_running) {
sim_wallclock_entry = NULL;
prvptr = NULL;
for (cptr = sim_wallclock_queue; cptr != QUEUE_LIST_END; cptr = cptr->next) {
for (cptr = sim_wallclock_queue; cptr != QUEUE_LIST_END; cptr = cptr->a_next) {
if (uptr->a_due_time < cptr->a_due_time)
break;
prvptr = cptr;
}
if (prvptr == NULL) { /* insert at head */
cptr = uptr->next = sim_wallclock_queue;
cptr = uptr->a_next = sim_wallclock_queue;
sim_wallclock_queue = uptr;
}
else {
cptr = uptr->next = prvptr->next; /* insert at prvptr */
prvptr->next = uptr;
cptr = uptr->a_next = prvptr->a_next; /* insert at prvptr */
prvptr->a_next = uptr;
}
}
@ -1224,8 +1224,8 @@ while (sim_asynch_enabled && sim_asynch_timer && sim_is_running) {
inst_per_sec = sim_timer_inst_per_sec ();
uptr = sim_wallclock_queue;
sim_wallclock_queue = uptr->next;
uptr->next = NULL; /* hygiene */
sim_wallclock_queue = uptr->a_next;
uptr->a_next = NULL; /* hygiene */
clock_gettime(CLOCK_REALTIME, &stop_time);
if (1 != sim_timespec_compare (&due_time, &stop_time)) {
@ -1240,11 +1240,12 @@ while (sim_asynch_enabled && sim_asynch_timer && sim_is_running) {
1000.0*(_timespec_to_double (&stop_time)-_timespec_to_double (&start_time)), sim_uname(uptr), inst_delay);
if (sim_clock_unit == uptr) {
/*
* Some devices may depend on executing during the same instruction as the
* clock tick event. We link the clock coschedule queue to the clock tick
* and then insert that list in the asynch event queue in a single operation
* Some devices may depend on executing during the same instruction or immediately
* after the clock tick event. To satisfy this, we link the clock unit to the head
* of the clock coschedule queue and then insert that list in the asynch event
* queue in a single operation
*/
uptr->next = sim_clock_cosched_queue;
uptr->a_next = sim_clock_cosched_queue;
sim_clock_cosched_queue = QUEUE_LIST_END;
AIO_ACTIVATE_LIST(sim_activate, uptr, inst_delay);
}
@ -1277,7 +1278,7 @@ if (sim_asynch_enabled && sim_asynch_timer) {
/* when restarting after being manually stopped the due times for all */
/* timer events needs to slide so they fire in the future. (clock ticks */
/* don't accumulate when the simulator is stopped) */
for (cptr = sim_wallclock_queue; cptr != QUEUE_LIST_END; cptr = cptr->next) {
for (cptr = sim_wallclock_queue; cptr != QUEUE_LIST_END; cptr = cptr->a_next) {
if (cptr == sim_wallclock_queue) { /* Handle first entry */
struct timespec now;
double due_time;
@ -1332,9 +1333,9 @@ else {
uptr = sim_wallclock_queue;
if (uptr == QUEUE_LIST_END)
break;
sim_wallclock_queue = uptr->next;
sim_wallclock_queue = uptr->a_next;
accum += uptr->time;
uptr->next = NULL;
uptr->a_next = NULL;
uptr->a_due_time = 0;
uptr->a_usec_delay = 0;
sim_activate_after (uptr, accum);
@ -1464,7 +1465,7 @@ else
(rtc_elapsed[sim_calb_tmr ] >= sim_idle_stable)) {
sim_debug (DBG_TIM, &sim_timer_dev, "sim_clock_coschedule() - queueing %s for clock co-schedule\n", sim_uname (uptr));
pthread_mutex_lock (&sim_timer_lock);
uptr->next = sim_clock_cosched_queue;
uptr->a_next = sim_clock_cosched_queue;
sim_clock_cosched_queue = uptr;
pthread_mutex_unlock (&sim_timer_lock);
return SCPE_OK;