kolibrios/drivers/ddk/linux/workqueue.c

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#include <linux/kernel.h>
#include <linux/workqueue.h>
#include <ddk.h>
struct workqueue_struct *alloc_workqueue(const char *fmt,
unsigned int flags,
int max_active)
{
struct workqueue_struct *wq;
wq = kzalloc(sizeof(*wq),0);
if (!wq)
goto err;
INIT_LIST_HEAD(&wq->worklist);
INIT_LIST_HEAD(&wq->delayed_worklist);
return wq;
err:
return NULL;
}
void run_workqueue(struct workqueue_struct *cwq)
{
unsigned long irqflags;
// dbgprintf("wq: %x head %x, next %x\n",
// cwq, &cwq->worklist, cwq->worklist.next);
repeat:
spin_lock_irqsave(&cwq->lock, irqflags);
while (!list_empty(&cwq->worklist))
{
struct work_struct *work = list_entry(cwq->worklist.next,
struct work_struct, entry);
work_func_t f = work->func;
list_del_init(cwq->worklist.next);
// dbgprintf("head %x, next %x\n",
// &cwq->worklist, cwq->worklist.next);
spin_unlock_irqrestore(&cwq->lock, irqflags);
f(work);
spin_lock_irqsave(&cwq->lock, irqflags);
}
spin_unlock_irqrestore(&cwq->lock, irqflags);
delay(1);
goto repeat;
}
bool queue_work(struct workqueue_struct *wq, struct work_struct *work)
{
unsigned long flags;
if(!list_empty(&work->entry))
return 0;
// dbgprintf("%s %p queue: %p\n", __FUNCTION__, work, wq);
spin_lock_irqsave(&wq->lock, flags);
list_add_tail(&work->entry, &wq->worklist);
spin_unlock_irqrestore(&wq->lock, flags);
return 1;
};
void __stdcall delayed_work_timer_fn(unsigned long __data)
{
struct delayed_work *dwork = (struct delayed_work *)__data;
struct workqueue_struct *wq = dwork->work.data;
queue_work(wq, &dwork->work);
}
int queue_delayed_work(struct workqueue_struct *wq,
struct delayed_work *dwork, unsigned long delay)
{
struct work_struct *work = &dwork->work;
if (delay == 0)
return queue_work(wq, &dwork->work);
// dbgprintf("%s %p queue: %p\n", __FUNCTION__, &dwork->work, wq);
work->data = wq;
TimerHs(delay,0, delayed_work_timer_fn, dwork);
return 1;
}
bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay)
{
return queue_delayed_work(system_wq, dwork, delay);
}