#ifndef __QLOCK_H_ #define __QLOCK_H #ifndef _QLOCK_EXTENSION This header file is an extension to ANSI/POSIX #endif #pragma lib "/$M/lib/ape/lib9.a" 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