The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/xwait.h

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    1 /*
    2  * SYS/XWAIT.H
    3  *
    4  * $DragonFly: src/sys/sys/xwait.h,v 1.2 2006/05/20 02:42:13 dillon Exp $
    5  */
    6 
    7 #ifndef _SYS_XWAIT_H_
    8 #define _SYS_XWAIT_H_
    9 
   10 #ifndef _SYS_QUEUE_H_
   11 #include <sys/queue.h>
   12 #endif
   13 
   14 struct proc;
   15 
   16 /*
   17  * XWAIT structure for xsleep()/xwakeup()
   18  */
   19 
   20 struct xwait {
   21     int     gen;
   22     TAILQ_HEAD(,proc) waitq;
   23 };
   24 
   25 static __inline void
   26 xupdate_gen(struct xwait *w)
   27 {
   28     ++w->gen;
   29 }
   30 
   31 #endif
   32 

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