86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
#ifndef _LINUX_WORKQUEUE_H
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#define _LINUX_WORKQUEUE_H
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#include <linux/list.h>
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#include <syscall.h>
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struct work_struct;
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typedef void (*work_func_t)(struct work_struct *work);
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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 workqueue_struct {
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spinlock_t lock;
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struct list_head worklist;
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struct list_head delayed_worklist;
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};
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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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unsigned int delay;
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};
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static inline struct delayed_work *to_delayed_work(struct work_struct *work)
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{
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return container_of(work, struct delayed_work, work);
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}
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extern struct workqueue_struct *system_wq;
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void run_workqueue(struct workqueue_struct *cwq);
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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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#define alloc_ordered_workqueue(fmt, flags, args...) \
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alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args)
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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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bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay);
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#define INIT_WORK(_work, _func) \
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do { \
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INIT_LIST_HEAD(&(_work)->entry); \
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(_work)->func = _func; \
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} while (0)
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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 /* _LINUX_WORKQUEUE_H */
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