1 /*

     2  * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  *   - Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  *

    11  *   - Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

    13  *     documentation and/or other materials provided with the distribution.

    14  *

    15  *   - Neither the name of Oracle nor the names of its

    16  *     contributors may be used to endorse or promote products derived

    17  *     from this software without specific prior written permission.

    18  *

    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

    20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

    23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30  */

    31 

    32 /*

    33  * This source code is provided to illustrate the usage of a given feature

    34  * or technique and has been deliberately simplified. Additional steps

    35  * required for a production-quality application, such as security checks,

    36  * input validation and proper error handling, might not be present in

    37  * this sample code.

    38  */

    39 

    40 

    41 #ifndef HPROF_BLOCKS_H

    42 #define HPROF_BLOCKS_H

    43 

    44 typedef struct BlockHeader {

    45     struct BlockHeader *next;

    46     int                 bytes_left;

    47     int                 next_pos;

    48 } BlockHeader;

    49 

    50 typedef struct Blocks {

    51     BlockHeader *first_block;   /* Pointer to first BlockHeader */

    52     BlockHeader *current_block; /* Pointer to current BlockHeader */

    53     int          alignment;     /* Data alignment, 1, 2, 4, 8, 16 */

    54     int          elem_size;     /* Size in bytes, ==1 means variable sizes */

    55     int          population;    /* Number of elements to allow for per Block */

    56 } Blocks;

    57 

    58 Blocks * blocks_init(int alignment, int elem_size, int population);

    59 void *   blocks_alloc(Blocks *blocks, int nbytes);

    60 void     blocks_term(Blocks *blocks);

    61 

    62 #endif