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