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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 /* This code is in the public domain.
     13 ** Version: 1.1  Author: Walt Karas
     14 */
     15 
     16 /* Configure Heap Memory Manager for processor architecture, compiler,
     17 ** and desired performance characteristics.  This file is included
     18 ** by heapmm.h, so these definitions can be used by code external to
     19 ** HMM.  You can change the default configuration, and/or create alternate
     20 ** configuration(s).
     21 */
     22 
     23 /* To allow for multiple configurations of HMM to be used in the same
     24 ** compilation unit, undefine all preprocessor symbols that will be
     25 ** defined below.
     26 */
     27 #undef HMM_ADDR_ALIGN_UNIT
     28 #undef HMM_BLOCK_ALIGN_UNIT
     29 #undef HMM_UNIQUE
     30 #undef HMM_DESC_PARAM
     31 #undef HMM_SYM_TO_STRING
     32 #undef HMM_SYM_TO_STRING
     33 #undef HMM_AUDIT_FAIL
     34 
     35 /* Turn X into a string after one macro expansion pass of X.  This trick
     36 ** works with both GCC and Visual C++. */
     37 #define HMM_SYM_TO_STRING(X) HMM_SYM_TO_STRING(X)
     38 #define HMM_SYM_TO_STRING(X) #X
     39 
     40 #ifndef HMM_CNFG_NUM
     41 
     42 /* Default configuration. */
     43 
     44 /* Use hmm_ prefix to avoid identifier conflicts. */
     45 #define HMM_UNIQUE(BASE) hmm_ ## BASE
     46 
     47 /* Number of bytes in an Address Alignment Unit (AAU). */
     48 //fwg
     49 //#define HMM_ADDR_ALIGN_UNIT sizeof(int)
     50 #define HMM_ADDR_ALIGN_UNIT 32
     51 
     52 /* Number of AAUs in a Block Alignment Unit (BAU). */
     53 #define HMM_BLOCK_ALIGN_UNIT 1
     54 
     55 /* Type of unsigned integer big enough to hold the size of a Block in AAUs. */
     56 typedef unsigned long HMM_UNIQUE(size_aau);
     57 
     58 /* Type of unsigned integer big enough to hold the size of a Block/Chunk
     59 ** in BAUs.  The high bit will be robbed. */
     60 typedef unsigned long HMM_UNIQUE(size_bau);
     61 
     62 void hmm_dflt_abort(const char *, const char *);
     63 
     64 /* Actions upon a self-audit failure.  Must expand to a single complete
     65 ** statement.  If you remove the definition of this macro, no self-auditing
     66 ** will be performed. */
     67 #define HMM_AUDIT_FAIL \
     68     hmm_dflt_abort(__FILE__, HMM_SYM_TO_STRING(__LINE__));
     69 
     70 #elif HMM_CNFG_NUM == 0
     71 
     72 /* Definitions for testing. */
     73 
     74 #define HMM_UNIQUE(BASE) thmm_ ## BASE
     75 
     76 #define HMM_ADDR_ALIGN_UNIT sizeof(int)
     77 
     78 #define HMM_BLOCK_ALIGN_UNIT 3
     79 
     80 typedef unsigned HMM_UNIQUE(size_aau);
     81 
     82 typedef unsigned short HMM_UNIQUE(size_bau);
     83 
     84 /* Under this test setup, a long jump is done if there is a self-audit
     85 ** failure.
     86 */
     87 
     88 extern jmp_buf HMM_UNIQUE(jmp_buf);
     89 extern const char *HMM_UNIQUE(fail_file);
     90 extern unsigned HMM_UNIQUE(fail_line);
     91 
     92 #define HMM_AUDIT_FAIL \
     93     { HMM_UNIQUE(fail_file) = __FILE__; HMM_UNIQUE(fail_line) = __LINE__; \
     94         longjmp(HMM_UNIQUE(jmp_buf), 1); }
     95 
     96 #elif HMM_CNFG_NUM == 1
     97 
     98 /* Put configuration 1 definitions here (if there is a configuration 1). */
     99 
    100 #elif HMM_CNFG_NUM == 2
    101 
    102 /* Put configuration 2 definitions here. */
    103 
    104 #elif HMM_CNFG_NUM == 3
    105 
    106 /* Put configuration 3 definitions here. */
    107 
    108 #elif HMM_CNFG_NUM == 4
    109 
    110 /* Put configuration 4 definitions here. */
    111 
    112 #elif HMM_CNFG_NUM == 5
    113 
    114 /* Put configuration 5 definitions here. */
    115 
    116 #endif
    117