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PictureFlow: Prevent queue overflow & simplify locking

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Change-Id: I41f620a4fdaf155913a944e7caf4c015990a53d4
This commit is contained in:
Christian Soffke 2022-03-20 21:20:05 +01:00 • committed by Aidan MacDonald
parent ae121de149
commit aec8b36348
1 changed files with 9 additions and 15 deletions
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22
apps/plugins/pictureflow/pictureflow.c
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@ -2185,12 +2185,15 @@ static void thread(void)
/* we just woke up */
break;
}
if(ev.id != SYS_TIMEOUT)
while ( load_new_slide() ) {
if(ev.id != SYS_TIMEOUT) {
while ( rb->queue_empty(&thread_q) ) {
buf_ctx_lock();
bool slide_loaded = load_new_slide();
buf_ctx_unlock();
if (!slide_loaded)
break;
rb->yield();
switch (ev.id) {
case EV_EXIT:
return;
}
}
}
@ -2517,7 +2520,6 @@ static inline bool load_and_prepare_surface(const int slide_index,
*/
bool load_new_slide(void)
{
buf_ctx_lock();
if (wants_to_quit)
return false;
@ -2571,7 +2573,6 @@ bool load_new_slide(void)
pf_sldcache.center_idx = i;
pf_sldcache.left_idx = i;
pf_sldcache.right_idx = i;
buf_ctx_unlock();
return true;
}
}
@ -2605,7 +2606,6 @@ bool load_new_slide(void)
{
if (pf_sldcache.free == -1 && !free_slide_prio(prio_l))
{
buf_ctx_unlock();
return false;
}
@ -2614,14 +2614,12 @@ bool load_new_slide(void)
{
lla_insert_before(&pf_sldcache.used, i, pf_sldcache.left_idx);
pf_sldcache.left_idx = i;
buf_ctx_unlock();
return true;
}
} else if(right < number_of_slides - 1)
{
if (pf_sldcache.free == -1 && !free_slide_prio(prio_r))
{
buf_ctx_unlock();
return false;
}
@ -2630,7 +2628,6 @@ bool load_new_slide(void)
{
lla_insert_after(i, pf_sldcache.right_idx);
pf_sldcache.right_idx = i;
buf_ctx_unlock();
return true;
}
}
@ -2645,7 +2642,6 @@ insert_first_slide:
pf_sldcache.left_idx = i;
pf_sldcache.right_idx = i;
pf_sldcache.used = i;
buf_ctx_unlock();
return true;
}
}
@ -2654,12 +2650,10 @@ fail_and_refree:
{
lla_insert_tail(&pf_sldcache.free, i);
}
buf_ctx_unlock();
return false;
fatal_fail:
free_all_slide_prio(0);
initialize_slide_cache();
buf_ctx_unlock();
return false;
}