FreeBSD/Linux Kernel Cross Reference
sys/kern/xpr.h

     /* 
      * Mach Operating System
      * Copyright (c) 1993,1992,1991,1990,1989,1988,1987 Carnegie Mellon University
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
      * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /*
     * HISTORY
     * $Log:        xpr.h,v $
     * Revision 2.5  93/11/17  17:33:37  dbg
     *      ANSI-fied (except for varargs functions)
     *      [93/10/12            dbg]
     * 
     * Revision 2.4  92/05/21  17:17:17  jfriedl
     *      Added 'extern void xpr()', etc.
     *      [92/05/16            jfriedl]
     * 
     * Revision 2.3  91/05/14  16:50:21  mrt
     *      Correcting copyright
     * 
     * Revision 2.2  91/02/05  17:31:18  mrt
     *      MACH_KERNEL: removed conditionals.
     *      [88/12/19            dbg]
     * 
     * Revision 2.1  89/08/03  15:57:39  rwd
     * Created.
     * 
     * Revision 2.5  88/12/19  02:51:59  mwyoung
     *      Added VM system tags.
     *      [88/11/22            mwyoung]
     * 
     * Revision 2.4  88/08/24  02:55:54  mwyoung
     *      Adjusted include file references.
     *      [88/08/17  02:29:56  mwyoung]
     * 
     *
     *  9-Apr-88  Daniel Julin (dpj) at Carnegie-Mellon University
     *      Added flags for TCP and MACH_NP debugging.
     *
     *  6-Jan-88  Michael Young (mwyoung) at Carnegie-Mellon University
     *      Make the event structure smaller to make it easier to read from
     *      kernel debuggers.
     *
     * 16-Mar-87  Mike Accetta (mja) at Carnegie-Mellon University
     *      MACH:  made XPR_DEBUG definition conditional on MACH
     *      since the routines invoked under it won't link without MACH.
     *      [ V5.1(F7) ]
     */
    /*
     * Include file for xpr circular buffer silent tracing.  
     *
     */
    /*
     * If the kernel flag XPRDEBUG is set, the XPR macro is enabled.  The 
     * macro should be invoked something like the following:
     *      XPR(XPR_SYSCALLS, ("syscall: %d, 0x%x\n", syscallno, arg1);
     * which will expand into the following code:
     *      if (xprflags & XPR_SYSCALLS)
     *              xpr("syscall: %d, 0x%x\n", syscallno, arg1);
     * Xpr will log the pointer to the printf string and up to 6 arguments,
     * along with a timestamp and cpuinfo (for multi-processor systems), into
     * a circular buffer.  The actual printf processing is delayed until after
     * the buffer has been collected.  It is assumed that the text/data segments
     * of the kernel can easily be reconstructed in a post-processor which
     * performs the printf processing.
     *
     * If the XPRDEBUG compilation switch is not set, the XPR macro expands 
     * to nothing.
     */
    
    #ifndef _KERN_XPR_H_
    #define _KERN_XPR_H_
    
    #include <xpr_debug.h>
    
    #include <machine/xpr.h>
    
    #if     XPR_DEBUG
    
    #define XPR(flags,xprargs) if(xprflags&flags) xpr xprargs
   
   extern int xprflags;
   /*
    * flags for message types.
    */
   #define XPR_SYSCALLS    0x00000001
   #define XPR_TRAPS       0x00000002
   #define XPR_SCHED       0x00000004
   #define XPR_NPTCP       0x00000008
   #define XPR_NP          0x00000010
   #define XPR_TCP         0x00000020
   
   #define XPR_VM_OBJECT           (1 << 8)
   #define XPR_VM_OBJECT_CACHE     (1 << 9)
   #define XPR_VM_PAGE             (1 << 10)
   #define XPR_VM_PAGEOUT          (1 << 11)
   #define XPR_MEMORY_OBJECT       (1 << 12)
   #define XPR_VM_FAULT            (1 << 13)
   #define XPR_INODE_PAGER         (1 << 14)
   #define XPR_INODE_PAGER_DATA    (1 << 15)
   
   #else   /* XPR_DEBUG */
   #define XPR(flags,xprargs)
   #endif  /* XPR_DEBUG */
   
   struct xprbuf {
           char    *msg;
           int     arg1,arg2,arg3,arg4,arg5;
           int     timestamp;
           int     cpuinfo;
   };
   
   #ifndef WANT_PROTOTYPES
   extern void xpr();
   #endif
   extern void xpr_dump(
           struct xprbuf   *base,
           int             nbufs);
   extern void xprinit(void);
   extern void xprbootstrap(void);
   
   #endif  /* _KERN_XPR_H_ */

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