25 lines
582 B
C
25 lines
582 B
C
#ifndef __SLEEPLOCK_H
|
|
#define __SLEEPLOCK_H
|
|
|
|
#include "types.h"
|
|
#include "spinlock.h"
|
|
|
|
struct spinlock;
|
|
|
|
// Long-term locks for processes
|
|
struct sleeplock {
|
|
uint locked; // Is the lock held?
|
|
struct spinlock lk; // spinlock protecting this sleep lock
|
|
|
|
// For debugging:
|
|
char *name; // Name of lock.
|
|
int pid; // Process holding lock
|
|
};
|
|
|
|
void acquiresleep(struct sleeplock*);
|
|
void releasesleep(struct sleeplock*);
|
|
int holdingsleep(struct sleeplock*);
|
|
void initsleeplock(struct sleeplock*, char*);
|
|
|
|
#endif
|