mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
Keir Fraser
ce5c899f22
This makes stubdom use the host's gcc instead of downloading/compiling binutils+gcc. That requires a bunch of changes and even uncovered a few bugs, but saves a lot of time. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
#ifndef __WAIT_H__
|
|
#define __WAIT_H__
|
|
|
|
#include <sched.h>
|
|
#include <os.h>
|
|
#include <waittypes.h>
|
|
|
|
#define DEFINE_WAIT(name) \
|
|
struct wait_queue name = { \
|
|
.thread = current, \
|
|
.thread_list = LIST_HEAD_INIT((name).thread_list), \
|
|
}
|
|
|
|
|
|
static inline void init_waitqueue_head(struct wait_queue_head *h)
|
|
{
|
|
INIT_LIST_HEAD(&h->thread_list);
|
|
}
|
|
|
|
static inline void init_waitqueue_entry(struct wait_queue *q, struct thread *thread)
|
|
{
|
|
q->thread = thread;
|
|
INIT_LIST_HEAD(&q->thread_list);
|
|
}
|
|
|
|
|
|
static inline void add_wait_queue(struct wait_queue_head *h, struct wait_queue *q)
|
|
{
|
|
if (list_empty(&q->thread_list))
|
|
list_add(&q->thread_list, &h->thread_list);
|
|
}
|
|
|
|
static inline void remove_wait_queue(struct wait_queue *q)
|
|
{
|
|
list_del(&q->thread_list);
|
|
}
|
|
|
|
static inline void wake_up(struct wait_queue_head *head)
|
|
{
|
|
unsigned long flags;
|
|
struct list_head *tmp, *next;
|
|
local_irq_save(flags);
|
|
list_for_each_safe(tmp, next, &head->thread_list)
|
|
{
|
|
struct wait_queue *curr;
|
|
curr = list_entry(tmp, struct wait_queue, thread_list);
|
|
wake(curr->thread);
|
|
}
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
#define add_waiter(w, wq) do { \
|
|
unsigned long flags; \
|
|
local_irq_save(flags); \
|
|
add_wait_queue(&wq, &w); \
|
|
block(current); \
|
|
local_irq_restore(flags); \
|
|
} while (0)
|
|
|
|
#define remove_waiter(w) do { \
|
|
unsigned long flags; \
|
|
local_irq_save(flags); \
|
|
remove_wait_queue(&w); \
|
|
local_irq_restore(flags); \
|
|
} while (0)
|
|
|
|
#define wait_event_deadline(wq, condition, deadline) do { \
|
|
unsigned long flags; \
|
|
DEFINE_WAIT(__wait); \
|
|
if(condition) \
|
|
break; \
|
|
for(;;) \
|
|
{ \
|
|
/* protect the list */ \
|
|
local_irq_save(flags); \
|
|
add_wait_queue(&wq, &__wait); \
|
|
current->wakeup_time = deadline; \
|
|
clear_runnable(current); \
|
|
local_irq_restore(flags); \
|
|
if((condition) || (deadline && NOW() >= deadline)) \
|
|
break; \
|
|
schedule(); \
|
|
} \
|
|
local_irq_save(flags); \
|
|
/* need to wake up */ \
|
|
wake(current); \
|
|
remove_wait_queue(&__wait); \
|
|
local_irq_restore(flags); \
|
|
} while(0)
|
|
|
|
#define wait_event(wq, condition) wait_event_deadline(wq, condition, 0)
|
|
|
|
|
|
|
|
#endif /* __WAIT_H__ */
|