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Annotation of OSKit-Mach/include/mach/profil.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 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: /*
        !            28:  * Copyright 1991 by Open Software Foundation,
        !            29:  * Grenoble, FRANCE
        !            30:  *
        !            31:  *             All Rights Reserved
        !            32:  * 
        !            33:  *   Permission to use, copy, modify, and distribute this software and
        !            34:  * its documentation for any purpose and without fee is hereby granted,
        !            35:  * provided that the above copyright notice appears in all copies and
        !            36:  * that both the copyright notice and this permission notice appear in
        !            37:  * supporting documentation, and that the name of OSF or Open Software
        !            38:  * Foundation not be used in advertising or publicity pertaining to
        !            39:  * distribution of the software without specific, written prior
        !            40:  * permission.
        !            41:  * 
        !            42:  *   OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
        !            43:  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
        !            44:  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
        !            45:  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
        !            46:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
        !            47:  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
        !            48:  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            49:  */
        !            50: 
        !            51: 
        !            52: #ifndef _MACH_PROFIL_H_
        !            53: #define _MACH_PROFIL_H_
        !            54: 
        !            55: #include <mach/boolean.h>
        !            56: #include <ipc/ipc_object.h>
        !            57: #include <vm/vm_kern.h> 
        !            58: 
        !            59: 
        !            60: #define        NB_PROF_BUFFER          2       /* number of buffers servicing a 
        !            61:                                         * profiled thread */
        !            62: #define        SIZE_PROF_BUFFER        100     /* size of a profil buffer (in int) 
        !            63:                                         * This values is also defined in
        !            64:                                         * the server (ugly), be careful ! */
        !            65: 
        !            66: 
        !            67: struct prof_data {
        !            68:        ipc_object_t    prof_port;      /* where to send a full buffer */
        !            69: 
        !            70:        struct buffer {
        !            71:            int *p_zone;                /* points to the actual storage area */
        !            72:            int                 p_index;/* next slot to be filled */
        !            73:            boolean_t           p_full; /* is the current buffer full ? */ 
        !            74:        } prof_area[NB_PROF_BUFFER];
        !            75: 
        !            76:        int             prof_index;     /* index of the buffer structure
        !            77:                                         *   currently in use */
        !            78: 
        !            79: };
        !            80: typedef struct prof_data       *prof_data_t;
        !            81: #define NULLPBUF ((prof_data_t) 0)
        !            82: typedef struct buffer          *buffer_t;
        !            83: 
        !            84: /* Macros */
        !            85: 
        !            86: #define        set_pbuf_nb(pbuf, nb) \
        !            87:          (((nb) >= 0 && (nb) < NB_PROF_BUFFER) \
        !            88:         ? (pbuf)->prof_index = (nb), 1 \
        !            89:         : 0)
        !            90: 
        !            91: 
        !            92: #define        get_pbuf_nb(pbuf) \
        !            93:        (pbuf)->prof_index
        !            94: 
        !            95: 
        !            96: extern vm_map_t kernel_map; 
        !            97: 
        !            98: #define dealloc_pbuf_area(pbuf) \
        !            99:           { \
        !           100:          register int i; \
        !           101:                                   \
        !           102:            for(i=0; i < NB_PROF_BUFFER ; i++)  \
        !           103:              kmem_free(kernel_map, \
        !           104:                         (vm_offset_t) (pbuf)->prof_area[i].p_zone, \
        !           105:                         SIZE_PROF_BUFFER*sizeof(int)); \
        !           106:             kmem_free(kernel_map, \
        !           107:                           (vm_offset_t)(pbuf), \
        !           108:                           sizeof(struct prof_data)); \
        !           109:           }
        !           110:        
        !           111: 
        !           112: #define alloc_pbuf_area(pbuf, vmpbuf) \
        !           113:       (vmpbuf) = (vm_offset_t) 0; \
        !           114:       if (kmem_alloc(kernel_map, &(vmpbuf) , sizeof(struct prof_data)) == \
        !           115:                                            KERN_SUCCESS) { \
        !           116:           register int i; \
        !           117:           register boolean_t end; \
        !           118:                                   \
        !           119:           (pbuf) = (prof_data_t) (vmpbuf); \
        !           120:           for(i=0, end=FALSE; i < NB_PROF_BUFFER && end == FALSE; i++) { \
        !           121:               (vmpbuf) = (vm_offset_t) 0; \
        !           122:              if (kmem_alloc(kernel_map,&(vmpbuf),SIZE_PROF_BUFFER*sizeof(int)) == KERN_SUCCESS) { \
        !           123:                 (pbuf)->prof_area[i].p_zone = (int *) (vmpbuf); \
        !           124:                 (pbuf)->prof_area[i].p_full = FALSE; \
        !           125:              } \
        !           126:              else { \
        !           127:                 (pbuf) = NULLPBUF; \
        !           128:                 end = TRUE; \
        !           129:              } \
        !           130:                    } \
        !           131:        } \
        !           132:        else \
        !           133:          (pbuf) = NULLPBUF; 
        !           134:        
        !           135: 
        !           136: 
        !           137: /* MACRO set_pbuf_value 
        !           138: ** 
        !           139: ** enters the value 'val' in the buffer 'pbuf' and returns the following
        !           140: ** indications:     0: means that a fatal error occured: the buffer was full
        !           141: **                       (it hasn't been sent yet)
        !           142: **                  1: means that a value has been inserted successfully
        !           143: **                 2: means that we'v just entered the last value causing 
        !           144: **                     the current buffer to be full.(must switch to 
        !           145: **                     another buffer and signal the sender to send it)
        !           146: */ 
        !           147:          
        !           148: #define set_pbuf_value(pbuf, val) \
        !           149:         { \
        !           150:          register buffer_t a = &((pbuf)->prof_area[(pbuf)->prof_index]); \
        !           151:          register int i = a->p_index++; \
        !           152:          register boolean_t f = a->p_full; \
        !           153:                          \
        !           154:          if (f == TRUE ) \
        !           155:              *(val) = 0; \
        !           156:          else { \
        !           157:            a->p_zone[i] = *(val); \
        !           158:            if (i == SIZE_PROF_BUFFER-1) { \
        !           159:                a->p_full = TRUE; \
        !           160:                *(val) = 2; \
        !           161:             } \
        !           162:             else \
        !           163:                *(val) = 1; \
        !           164:           } \
        !           165:        }
        !           166: 
        !           167:          
        !           168: #define        reset_pbuf_area(pbuf) \
        !           169:        { \
        !           170:         register int *i = &((pbuf)->prof_index); \
        !           171:                                              \
        !           172:         *i = (*i == NB_PROF_BUFFER-1) ? 0 : ++(*i); \
        !           173:         (pbuf)->prof_area[*i].p_index = 0; \
        !           174:        }
        !           175: 
        !           176: 
        !           177: /**************************************************************/
        !           178: /* Structure, elements used for queuing operations on buffers */
        !           179: /**************************************************************/
        !           180: 
        !           181: #define        thread_t int *
        !           182: /*
        !           183: ** This must be done in order to avoid a circular inclusion 
        !           184: ** with file kern/thread.h . 
        !           185: ** When using this data structure, one must cast the actual 
        !           186: ** type, this is (int *) or (thread_t)
        !           187: */
        !           188: 
        !           189: struct buf_to_send {
        !           190:        queue_chain_t list;
        !           191:        thread_t thread;
        !           192:         int number;         /* the number of the buffer to be sent */
        !           193:        char wakeme;        /* do wakeup when buffer has been sent */
        !           194:         }      ;
        !           195: 
        !           196: #undef thread_t
        !           197: 
        !           198: 
        !           199: 
        !           200: typedef struct buf_to_send *buf_to_send_t;
        !           201: 
        !           202: #define        NULLBTS         ((buf_to_send_t) 0)
        !           203: 
        !           204: /*
        !           205: ** Global variable: the head of the queue of buffers to send 
        !           206: ** It is a queue with locks (uses macros from queue.h) and it
        !           207: ** is shared by hardclock() and the sender_thread() 
        !           208: */
        !           209: 
        !           210: mpqueue_head_t prof_queue; 
        !           211: 
        !           212: #endif /* _MACH_PROF_H_ */

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