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Annotation of OSKit-Mach/kern/pc_sample.h, revision 1.1

1.1     ! root        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  [email protected]
        !            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 1.1.1.1  1996/10/30 01:38:13  thomas
        !            30:  * Imported from UK22
        !            31:  *
        !            32:  * Revision 1.1  1994/11/02  02:24:15  law
        !            33:  * Initial revision
        !            34:  *
        !            35:  * Revision 2.2  93/11/17  19:06:01  dbg
        !            36:  *     Moved kernel internal definitions here from mach/pc_sample.h.
        !            37:  *     [93/09/24            dbg]
        !            38:  * 
        !            39:  */
        !            40: 
        !            41: /*
        !            42:  *     Kernel definitions for PC sampling.
        !            43:  */
        !            44: #ifndef        _KERN_PC_SAMPLE_H_
        !            45: #define        _KERN_PC_SAMPLE_H_
        !            46: 
        !            47: #include <mach/pc_sample.h>
        !            48: #include <mach/machine/vm_types.h>
        !            49: #include <kern/kern_types.h>
        !            50: #include <kern/macro_help.h>
        !            51: 
        !            52: /*
        !            53:  *     Control structure for sampling, included in
        !            54:  *     threads and tasks.  If sampletypes is 0, no
        !            55:  *     sampling is done.
        !            56:  */
        !            57: 
        !            58: struct sample_control {
        !            59:     vm_offset_t                buffer;
        !            60:     unsigned int       seqno;
        !            61:     sampled_pc_flavor_t sampletypes;
        !            62: };
        !            63: 
        !            64: typedef struct sample_control  sample_control_t;
        !            65: 
        !            66: /*
        !            67:  *     Routines to take PC samples.
        !            68:  */
        !            69: extern void take_pc_sample(
        !            70:        thread_t        thread,
        !            71:        sample_control_t *cp,
        !            72:        sampled_pc_flavor_t flavor);
        !            73: 
        !            74: /*
        !            75:  *     Macro to do quick flavor check for sampling,
        !            76:  *     on both threads and tasks.
        !            77:  */
        !            78: #define        take_pc_sample_macro(thread, flavor) \
        !            79:     MACRO_BEGIN \
        !            80:        task_t  task; \
        !            81:  \
        !            82:        if ((thread)->pc_sample.sampletypes & (flavor)) \
        !            83:            take_pc_sample((thread), &(thread)->pc_sample, (flavor)); \
        !            84:  \
        !            85:        task = (thread)->task; \
        !            86:        if (task->pc_sample.sampletypes & (flavor)) \
        !            87:            take_pc_sample((thread), &task->pc_sample, (flavor)); \
        !            88:     MACRO_END
        !            89: 
        !            90: #endif /* _KERN_PC_SAMPLE_H_ */

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