145 lines
4.9 KiB
C
145 lines
4.9 KiB
C
#ifndef _LINUX_WAIT_H
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#define _LINUX_WAIT_H
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typedef struct __wait_queue wait_queue_t;
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typedef struct __wait_queue_head wait_queue_head_t;
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struct __wait_queue
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{
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struct list_head task_list;
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evhandle_t evnt;
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};
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struct __wait_queue_head
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{
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spinlock_t lock;
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struct list_head task_list;
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};
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static inline void __add_wait_queue(wait_queue_head_t *head, wait_queue_t *new)
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{
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list_add(&new->task_list, &head->task_list);
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}
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#define __wait_event(wq, condition) \
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do { \
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DEFINE_WAIT(__wait); \
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\
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for (;;) { \
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prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); \
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if (condition) \
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break; \
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schedule(); \
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} \
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finish_wait(&wq, &__wait); \
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} while (0)
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#define wait_event(wq, condition) \
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do{ \
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wait_queue_t __wait = { \
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.task_list = LIST_HEAD_INIT(__wait.task_list), \
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.evnt = CreateEvent(NULL, MANUAL_DESTROY), \
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}; \
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u32 flags; \
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\
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spin_lock_irqsave(&wq.lock, flags); \
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if (list_empty(&__wait.task_list)) \
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__add_wait_queue(&wq, &__wait); \
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spin_unlock_irqrestore(&wq.lock, flags); \
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\
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for(;;){ \
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if (condition) \
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break; \
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WaitEvent(__wait.evnt); \
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}; \
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if (!list_empty_careful(&__wait.task_list)) { \
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spin_lock_irqsave(&wq.lock, flags); \
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list_del_init(&__wait.task_list); \
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spin_unlock_irqrestore(&wq.lock, flags); \
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}; \
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DestroyEvent(__wait.evnt); \
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} while (0)
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static inline
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void wake_up_all(wait_queue_head_t *q)
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{
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wait_queue_t *curr;
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unsigned long flags;
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spin_lock_irqsave(&q->lock, flags);
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list_for_each_entry(curr, &q->task_list, task_list)
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{
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kevent_t event;
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event.code = -1;
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RaiseEvent(curr->evnt, 0, &event);
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}
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spin_unlock_irqrestore(&q->lock, flags);
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}
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static inline void
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init_waitqueue_head(wait_queue_head_t *q)
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{
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spin_lock_init(&q->lock);
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INIT_LIST_HEAD(&q->task_list);
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};
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/*
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* Workqueue flags and constants. For details, please refer to
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* Documentation/workqueue.txt.
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*/
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enum {
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WQ_NON_REENTRANT = 1 << 0, /* guarantee non-reentrance */
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WQ_UNBOUND = 1 << 1, /* not bound to any cpu */
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WQ_FREEZABLE = 1 << 2, /* freeze during suspend */
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WQ_MEM_RECLAIM = 1 << 3, /* may be used for memory reclaim */
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WQ_HIGHPRI = 1 << 4, /* high priority */
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WQ_CPU_INTENSIVE = 1 << 5, /* cpu instensive workqueue */
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WQ_DRAINING = 1 << 6, /* internal: workqueue is draining */
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WQ_RESCUER = 1 << 7, /* internal: workqueue has rescuer */
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WQ_MAX_ACTIVE = 512, /* I like 512, better ideas? */
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WQ_MAX_UNBOUND_PER_CPU = 4, /* 4 * #cpus for unbound wq */
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WQ_DFL_ACTIVE = WQ_MAX_ACTIVE / 2,
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};
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struct work_struct;
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struct workqueue_struct {
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spinlock_t lock;
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struct list_head worklist;
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};
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typedef void (*work_func_t)(struct work_struct *work);
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struct work_struct {
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struct list_head entry;
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struct workqueue_struct *data;
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work_func_t func;
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};
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struct delayed_work {
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struct work_struct work;
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};
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struct workqueue_struct *alloc_workqueue_key(const char *fmt,
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unsigned int flags, int max_active);
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int queue_delayed_work(struct workqueue_struct *wq,
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struct delayed_work *dwork, unsigned long delay);
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#define INIT_DELAYED_WORK(_work, _func) \
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do { \
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INIT_LIST_HEAD(&(_work)->work.entry); \
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(_work)->work.func = _func; \
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} while (0)
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#endif
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