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Added queue_broadcast()

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1253 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-06-29 21:19:55 +00:00
parent eb102e1a23
commit 2a73cec69b
3 changed files with 34 additions and 7 deletions
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29
firmware/kernel.c
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@ -29,21 +29,22 @@ void (*tick_funcs[MAX_NUM_TICK_TASKS])(void);
static void tick_start(unsigned int interval_in_ms);
/* This array holds all queues that are initiated. It is used for broadcast. */
static struct event_queue *all_queues[32];
static int num_queues;
/****************************************************************************
* Standard kernel stuff
****************************************************************************/
void kernel_init(void)
{
int i;
/* Init the threading API */
init_threads();
/* Clear the tick task array */
for(i = 0;i < MAX_NUM_TICK_TASKS;i++)
{
tick_funcs[i] = NULL;
}
memset(tick_funcs, 0, sizeof(tick_funcs));
num_queues = 0;
memset(all_queues, 0, sizeof(all_queues));
tick_start(1000/HZ);
}
@ -82,6 +83,9 @@ void queue_init(struct event_queue *q)
{
q->read = 0;
q->write = 0;
/* Add it to the all_queues array */
all_queues[num_queues++] = q;
}
void queue_wait(struct event_queue *q, struct event *ev)
@ -112,6 +116,17 @@ bool queue_empty(struct event_queue* q)
return ( q->read == q->write );
}
int queue_broadcast(int id, void *data)
{
int i;
for(i = 0;i < num_queues;i++)
{
queue_post(all_queues[i], id, data);
}
return num_queues;
}
/****************************************************************************
* Timer tick