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