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#ifndef _PLAN9_SOURCE
This header file is an extension to ANSI/POSIX
#endif
#ifndef __QLOCK_H_
#define __QLOCK_H_
#pragma lib "/$M/lib/ape/lib9.a"
#include <u.h>
#include <lock.h>
typedef struct QLp QLp;
struct QLp
{
int inuse;
QLp *next;
char state;
};
typedef
struct QLock
{
Lock lock;
int locked;
QLp *head;
QLp *tail;
} QLock;
#ifdef __cplusplus
extern "C" {
#endif
extern void qlock(QLock*);
extern void qunlock(QLock*);
extern int canqlock(QLock*);
#ifdef __cplusplus
}
#endif
#endif
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