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Simplification, queue pointers don't wrap (except at INT_MAX, but the calculation is still correct in this case). Implemented queue_count() for the simulator.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13154 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2007-04-14 09:47:47 +00:00
parent 9bfa237869
commit 0b7bb31453
3 changed files with 10 additions and 12 deletions
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4
apps/gui/list.c
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@ -943,9 +943,7 @@ unsigned gui_synclist_do_button(struct gui_synclist * lists,
case ACTION_STD_PREV:
case ACTION_STD_PREVREPEAT:
gui_synclist_select_previous(lists);
#ifndef SIMULATOR
if (queue_count(&button_queue) < FRAMEDROP_TRIGGER)
#endif
gui_synclist_draw(lists);
yield();
return ACTION_STD_PREV;
@ -953,9 +951,7 @@ unsigned gui_synclist_do_button(struct gui_synclist * lists,
case ACTION_STD_NEXT:
case ACTION_STD_NEXTREPEAT:
gui_synclist_select_next(lists);
#ifndef SIMULATOR
if (queue_count(&button_queue) < FRAMEDROP_TRIGGER)
#endif
gui_synclist_draw(lists);
yield();
return ACTION_STD_NEXT;

13
firmware/kernel.c
View file

@ -345,7 +345,7 @@ intptr_t queue_send(struct event_queue *q, long id, intptr_t data)
{
int oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
unsigned int wr;
lock_cores();
wr = q->write++ & QUEUE_LENGTH_MASK;
@ -495,23 +495,20 @@ void queue_remove_from_head(struct event_queue *q, long id)
int queue_count(const struct event_queue *q)
{
int oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
int result = 0;
int result;
#if NUM_CORES > 1
if (!q->irq_safe)
lock_cores();
#endif
if (q->read <= q->write)
result = q->write - q->read;
else
result = QUEUE_LENGTH - (q->read - q->write);
result = q->write - q->read;
#if NUM_CORES > 1
if (!q->irq_safe)
unlock_cores();
#endif
set_irq_level(oldlevel);
return result;

5
uisimulator/sdl/kernel.c
View file

@ -281,6 +281,11 @@ void queue_remove_from_head(struct event_queue *q, long id)
set_irq_level(oldlevel);
}
int queue_count(const struct event_queue *q)
{
return q->write - q->read;
}
void switch_thread(bool save_context, struct thread_entry **blocked_list)
{
(void)save_context;