annotate urogue/memory.c @ 315:ad2570b5b21f

Advanced Rogue 5, 7: fix some trading post messages. When attempting to buy an unaffordable object, messages were often of the form "You can't afford that a scroll of hold monster !", because the object description (stored in curpurch) was the same text used in inventory displays. This has been worked around by inspecting the contents of curpurch and using different message templates.
author John "Elwin" Edwards
date Sun, 24 Oct 2021 20:26:21 -0400
parents 13b482bd9e66
children
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1 /*
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2 memory.c
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3
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4 UltraRogue: The Ultimate Adventure in the Dungeons of Doom
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5 Copyright (C) 1995 Herb Chong
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6 All rights reserved.
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7
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8 See the file LICENSE.TXT for full copyright and licensing information.
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9 */
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10
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13
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14 #include "dict.h"
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15 #include "memory.h"
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16 #include "rogue.h"
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17
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18 #ifdef HAVE_CONFIG_H
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19 #include "config.h"
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20 #endif
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21
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22 /* Debugging memory allocation code that tries to trap common memory problems
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23 like overwriting storage and stepping on memory pointer chains. If code
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24 doesn't use malloc, free, and realloc a lot, these routines can be left in
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25 as added protection against undetected storage bugs.
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26 */
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27
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28 /* FENCE_SIZE should be a multiple of sizeof(size_t) to prevent alignment problems.
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29 The code assumes that malloc and realloc return pointers aligned at least on size_t
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30 sized boundaries and that a pointer needs alignment no more strict than that of an
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31 object needed to hold a size_t.
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32 */
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33
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34 #define FENCE_SIZE (sizeof(size_t) * 1024)
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35
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36 static int memdebug_level = 0;
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37 #ifdef MEM_DEBUG
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38 static DICTIONARY *allocations = NULL;
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39 static FILE *trace_file = NULL;
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40 #endif
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41
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42 /* set the debug level */
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43 void mem_debug(const int level)
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44 {
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45 memdebug_level = level;
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46
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47 #ifdef MEM_DEBUG
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48 if (trace_file == NULL)
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49 trace_file = fopen("trace", "w");
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50
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51 /* all except 0, 1, and unknown fall through */
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52 switch(memdebug_level) {
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53 case 2:
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54 fprintf(trace_file, "+++ Memory tracking possible, ");
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55 case 1:
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56 fprintf(trace_file, "+++ Memory debugging enabled, ");
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57 break;
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58 case 0:
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59 fprintf(trace_file, "+++ Memory debugging disabled, ");
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60 break;
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61 default:
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62 fprintf(trace_file, "!!! Unknown memory debug level set, enabling level 1, ");
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63 memdebug_level = 1;
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64 break;
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65 }
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66 fprintf(trace_file, "fence size = %d\n", FENCE_SIZE);
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67 #endif
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68 }
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69
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70 /* set memory tracking on or off */
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71 /* turning it off deletes all tracking data */
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72 void mem_tracking(int flag)
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73 {
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74 #ifdef MEM_DEBUG
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75 /* do nothing if debuglevel is too low */
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76 if (memdebug_level < 2)
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77 return;
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78
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79 /* turn on tracking */
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80 if (flag > 0) {
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81 if (allocations != NULL) {
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82 dict_destroy(allocations);
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83 allocations = NULL;
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84 }
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85 allocations = dict_create(8, 100, 4, 20);
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86 if (allocations == NULL) {
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87 fprintf(trace_file, "!!! Unable to allocate tracking table!\n");
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88 abort();
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89 }
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90 }
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