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11 <h1>examples/PIPS/antiword/src/xmalloc.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> |
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12 <a name="l00002"></a>00002 <span class="comment"> * xmalloc.c</span> |
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13 <a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1998-2005 A.J. van Os</span> |
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14 <a name="l00004"></a>00004 <span class="comment"> *</span> |
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15 <a name="l00005"></a>00005 <span class="comment"> * Description:</span> |
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16 <a name="l00006"></a>00006 <span class="comment"> * Extended malloc and friends</span> |
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17 <a name="l00007"></a>00007 <span class="comment"> */</span> |
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18 <a name="l00008"></a>00008 |
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19 <a name="l00009"></a>00009 <span class="preprocessor">#include <stdlib.h></span> |
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20 <a name="l00010"></a>00010 <span class="preprocessor">#include <string.h></span> |
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21 <a name="l00011"></a>00011 <span class="preprocessor">#include "antiword.h"</span> |
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22 <a name="l00012"></a>00012 |
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23 <a name="l00013"></a>00013 <span class="keyword">static</span> <span class="keywordtype">char</span> *szMessage = |
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24 <a name="l00014"></a>00014 <span class="stringliteral">"Memory allocation failed, unable to continue"</span>; |
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25 <a name="l00015"></a>00015 <span class="preprocessor">#if defined(__dos) && !defined(__DJGPP__)</span> |
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26 <a name="l00016"></a>00016 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">char</span> *szDosMessage = |
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27 <a name="l00017"></a>00017 <span class="stringliteral">"DOS can't allocate this kind of memory, unable to continue"</span>; |
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28 <a name="l00018"></a>00018 <span class="preprocessor">#endif </span><span class="comment">/* __dos && !__DJGPP__ */</span> |
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29 <a name="l00019"></a>00019 |
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30 <a name="l00020"></a>00020 |
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31 <a name="l00021"></a>00021 <span class="comment">/*</span> |
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32 <a name="l00022"></a>00022 <span class="comment"> * xmalloc - Allocates dynamic memory</span> |
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33 <a name="l00023"></a>00023 <span class="comment"> *</span> |
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34 <a name="l00024"></a>00024 <span class="comment"> * See malloc(3), but unlike malloc(3) xmalloc does not return in case</span> |
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35 <a name="l00025"></a>00025 <span class="comment"> * of error.</span> |
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36 <a name="l00026"></a>00026 <span class="comment"> */</span> |
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37 <a name="l00027"></a>00027 <span class="keywordtype">void</span> * |
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38 <a name="l00028"></a>00028 xmalloc(<span class="keywordtype">size_t</span> tSize) |
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39 <a name="l00029"></a>00029 { |
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40 <a name="l00030"></a>00030 <span class="keywordtype">void</span> *pvTmp; |
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41 <a name="l00031"></a>00031 |
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42 <a name="l00032"></a>00032 TRACE_MSG(<span class="stringliteral">"xmalloc"</span>); |
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43 <a name="l00033"></a>00033 |
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44 <a name="l00034"></a>00034 <span class="keywordflow">if</span> (tSize == 0) { |
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45 <a name="l00035"></a>00035 tSize = 1; |
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46 <a name="l00036"></a>00036 } |
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47 <a name="l00037"></a>00037 pvTmp = malloc(tSize); |
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48 <a name="l00038"></a>00038 <span class="keywordflow">if</span> (pvTmp == NULL) { |
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49 <a name="l00039"></a>00039 DBG_MSG(<span class="stringliteral">"xmalloc returned NULL"</span>); |
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50 <a name="l00040"></a>00040 DBG_DEC(tSize); |
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51 <a name="l00041"></a>00041 werr(1, szMessage); |
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52 <a name="l00042"></a>00042 } |
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53 <a name="l00043"></a>00043 <span class="keywordflow">return</span> pvTmp; |
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54 <a name="l00044"></a>00044 } <span class="comment">/* end of xmalloc */</span> |
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55 <a name="l00045"></a>00045 |
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56 <a name="l00046"></a>00046 <span class="comment">/*</span> |
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57 <a name="l00047"></a>00047 <span class="comment"> * xcalloc - Allocates and zeros dynamic memory</span> |
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58 <a name="l00048"></a>00048 <span class="comment"> *</span> |
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59 <a name="l00049"></a>00049 <span class="comment"> * See calloc(3), but unlike calloc(3) xcalloc does not return in case of error</span> |
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60 <a name="l00050"></a>00050 <span class="comment"> */</span> |
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61 <a name="l00051"></a>00051 <span class="keywordtype">void</span> * |
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62 <a name="l00052"></a>00052 xcalloc(<span class="keywordtype">size_t</span> tNmemb, <span class="keywordtype">size_t</span> tSize) |
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63 <a name="l00053"></a>00053 { |
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64 <a name="l00054"></a>00054 <span class="keywordtype">void</span> *pvTmp; |
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65 <a name="l00055"></a>00055 |
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66 <a name="l00056"></a>00056 TRACE_MSG(<span class="stringliteral">"xcalloc"</span>); |
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67 <a name="l00057"></a>00057 |
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68 <a name="l00058"></a>00058 <span class="preprocessor">#if defined(__dos) && !defined(__DJGPP__)</span> |
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69 <a name="l00059"></a>00059 <span class="preprocessor"></span> <span class="keywordflow">if</span> ((ULONG)tNmemb * (ULONG)tSize > 0xffffUL) { |
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70 <a name="l00060"></a>00060 DBG_DEC((ULONG)tNmemb * (ULONG)tSize); |
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71 <a name="l00061"></a>00061 werr(1, szDosMessage); |
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72 <a name="l00062"></a>00062 } |
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73 <a name="l00063"></a>00063 <span class="preprocessor">#endif </span><span class="comment">/* __dos && !__DJGPP__ */</span> |
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74 <a name="l00064"></a>00064 |
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75 <a name="l00065"></a>00065 <span class="keywordflow">if</span> (tNmemb == 0 || tSize == 0) { |
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76 <a name="l00066"></a>00066 tNmemb = 1; |
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77 <a name="l00067"></a>00067 tSize = 1; |
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78 <a name="l00068"></a>00068 } |
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79 <a name="l00069"></a>00069 pvTmp = calloc(tNmemb, tSize); |
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80 <a name="l00070"></a>00070 <span class="keywordflow">if</span> (pvTmp == NULL) { |
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81 <a name="l00071"></a>00071 DBG_MSG(<span class="stringliteral">"xcalloc returned NULL"</span>); |
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82 <a name="l00072"></a>00072 werr(1, szMessage); |
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83 <a name="l00073"></a>00073 } |
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84 <a name="l00074"></a>00074 <span class="keywordflow">return</span> pvTmp; |
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85 <a name="l00075"></a>00075 } <span class="comment">/* end of xcalloc */</span> |
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86 <a name="l00076"></a>00076 |
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87 <a name="l00077"></a>00077 <span class="comment">/*</span> |
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88 <a name="l00078"></a>00078 <span class="comment"> * xrealloc - Changes the size of a memory object</span> |
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89 <a name="l00079"></a>00079 <span class="comment"> *</span> |
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90 <a name="l00080"></a>00080 <span class="comment"> * See realloc(3), but unlike realloc(3) xrealloc does not return in case</span> |
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91 <a name="l00081"></a>00081 <span class="comment"> * of error.</span> |
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92 <a name="l00082"></a>00082 <span class="comment"> */</span> |
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93 <a name="l00083"></a>00083 <span class="keywordtype">void</span> * |
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94 <a name="l00084"></a>00084 xrealloc(<span class="keywordtype">void</span> *pvArg, <span class="keywordtype">size_t</span> tSize) |
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95 <a name="l00085"></a>00085 { |
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96 <a name="l00086"></a>00086 <span class="keywordtype">void</span> *pvTmp; |
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97 <a name="l00087"></a>00087 |
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98 <a name="l00088"></a>00088 TRACE_MSG(<span class="stringliteral">"xrealloc"</span>); |
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99 <a name="l00089"></a>00089 |
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100 <a name="l00090"></a>00090 pvTmp = realloc(pvArg, tSize); |
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101 <a name="l00091"></a>00091 <span class="keywordflow">if</span> (pvTmp == NULL) { |
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102 <a name="l00092"></a>00092 DBG_MSG(<span class="stringliteral">"realloc returned NULL"</span>); |
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103 <a name="l00093"></a>00093 werr(1, szMessage); |
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104 <a name="l00094"></a>00094 } |
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105 <a name="l00095"></a>00095 <span class="keywordflow">return</span> pvTmp; |
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106 <a name="l00096"></a>00096 } <span class="comment">/* end of xrealloc */</span> |
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107 <a name="l00097"></a>00097 |
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108 <a name="l00098"></a>00098 <span class="comment">/*</span> |
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109 <a name="l00099"></a>00099 <span class="comment"> * xstrdup - Duplicate a string</span> |
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110 <a name="l00100"></a>00100 <span class="comment"> *</span> |
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111 <a name="l00101"></a>00101 <span class="comment"> * See strdup(3), but unlike strdup(3) xstrdup does not return in case</span> |
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112 <a name="l00102"></a>00102 <span class="comment"> * of error.</span> |
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113 <a name="l00103"></a>00103 <span class="comment"> *</span> |
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114 <a name="l00104"></a>00104 <span class="comment"> * NOTE:</span> |
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115 <a name="l00105"></a>00105 <span class="comment"> * Does not use strdup(3), because some systems don't have it.</span> |
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116 <a name="l00106"></a>00106 <span class="comment"> */</span> |
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117 <a name="l00107"></a>00107 <span class="keywordtype">char</span> * |
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118 <a name="l00108"></a>00108 xstrdup(<span class="keyword">const</span> <span class="keywordtype">char</span> *szArg) |
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119 <a name="l00109"></a>00109 { |
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120 <a name="l00110"></a>00110 <span class="keywordtype">char</span> *szTmp; |
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121 <a name="l00111"></a>00111 |
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122 <a name="l00112"></a>00112 TRACE_MSG(<span class="stringliteral">"xstrdup"</span>); |
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123 <a name="l00113"></a>00113 |
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124 <a name="l00114"></a>00114 szTmp = xmalloc(strlen(szArg) + 1); |
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125 <a name="l00115"></a>00115 strcpy(szTmp, szArg); |
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126 <a name="l00116"></a>00116 <span class="keywordflow">return</span> szTmp; |
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127 <a name="l00117"></a>00117 } <span class="comment">/* end of xstrdup */</span> |
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128 <a name="l00118"></a>00118 |
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129 <a name="l00119"></a>00119 <span class="comment">/*</span> |
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130 <a name="l00120"></a>00120 <span class="comment"> * xfree - Deallocates dynamic memory</span> |
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131 <a name="l00121"></a>00121 <span class="comment"> *</span> |
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132 <a name="l00122"></a>00122 <span class="comment"> * See free(3).</span> |
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133 <a name="l00123"></a>00123 <span class="comment"> *</span> |
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134 <a name="l00124"></a>00124 <span class="comment"> * returns NULL;</span> |
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135 <a name="l00125"></a>00125 <span class="comment"> * This makes p=xfree(p) possible, free memory and overwrite the pointer to it.</span> |
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136 <a name="l00126"></a>00126 <span class="comment"> */</span> |
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137 <a name="l00127"></a>00127 <span class="keywordtype">void</span> * |
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138 <a name="l00128"></a>00128 xfree(<span class="keywordtype">void</span> *pvArg) |
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139 <a name="l00129"></a>00129 { |
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140 <a name="l00130"></a>00130 TRACE_MSG(<span class="stringliteral">"xfree"</span>); |
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141 <a name="l00131"></a>00131 |
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142 <a name="l00132"></a>00132 <span class="keywordflow">if</span> (pvArg != NULL) { |
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143 <a name="l00133"></a>00133 free(pvArg); |
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144 <a name="l00134"></a>00134 } |
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145 <a name="l00135"></a>00135 <span class="keywordflow">return</span> NULL; |
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146 <a name="l00136"></a>00136 } <span class="comment">/* end of xfree */</span> |
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147 </pre></div></div> |
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