pc_sample.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1993 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon 
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        pc_sample.h,v $
   29  * Revision 2.2  93/11/17  19:06:01  dbg
   30  *      Moved kernel internal definitions here from mach/pc_sample.h.
   31  *      [93/09/24            dbg]
   32  * 
   33  */
   34 
   35 /*
   36  *      Kernel definitions for PC sampling.
   37  */
   38 #ifndef _KERN_PC_SAMPLE_H_
   39 #define _KERN_PC_SAMPLE_H_
   40 
   41 #include <mach/pc_sample.h>
   42 #include <mach/machine/vm_types.h>
   43 #include <kern/kern_types.h>
   44 #include <kern/macro_help.h>
   45 
   46 /*
   47  *      Control structure for sampling, included in
   48  *      threads and tasks.  If sampletypes is 0, no
   49  *      sampling is done.
   50  */
   51 
   52 struct sample_control {
   53     vm_offset_t         buffer;
   54     unsigned int        seqno;
   55     sampled_pc_flavor_t sampletypes;
   56 };
   57 
   58 typedef struct sample_control   sample_control_t;
   59 
   60 /*
   61  *      Routines to take PC samples.
   62  */
   63 extern void take_pc_sample(
   64         thread_t        thread,
   65         sample_control_t *cp,
   66         sampled_pc_flavor_t flavor);
   67 
   68 /*
   69  *      Macro to do quick flavor check for sampling,
   70  *      on both threads and tasks.
   71  */
   72 #define take_pc_sample_macro(thread, flavor) \
   73     MACRO_BEGIN \
   74         task_t  task; \
   75  \
   76         if ((thread)->pc_sample.sampletypes & (flavor)) \
   77             take_pc_sample((thread), &(thread)->pc_sample, (flavor)); \
   78  \
   79         task = (thread)->task; \
   80         if (task->pc_sample.sampletypes & (flavor)) \
   81             take_pc_sample((thread), &task->pc_sample, (flavor)); \
   82     MACRO_END
   83 
   84 #endif  /* _KERN_PC_SAMPLE_H_ */

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

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