annotate src/debug.c @ 51:06c0262ad689 stable-0-6-5

code cleanup
author carl
date Tue, 22 Jan 2008 14:39:02 -0800
parents f66078abed38
children b12f4e50e2e8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 #include "define.h"
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3
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <stdarg.h>
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7 #include <ctype.h>
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8 #include <string.h>
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9 #include <limits.h>
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10
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11 #ifdef _WIN32
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12 # define vsnprintf _vsnprintf
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13 #endif
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14
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15 struct pst_debug_item {
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16 int type;
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17 char * function;
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18 unsigned int line;
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19 char * file;
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20 char * text;
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21 struct pst_debug_item *next;
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22 } *item_head=NULL, *item_tail=NULL, *item_ptr=NULL, *info_ptr=NULL, *temp_list=NULL;
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25 struct pst_debug_func {
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26 char * name;
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27 struct pst_debug_func *next;
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28 } *func_head=NULL, *func_ptr=NULL;
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29
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30
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31 void pst_debug_write_msg(struct pst_debug_item *item, char *fmt, va_list *ap, int size);
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32 void pst_debug_write_hex(struct pst_debug_item *item, unsigned char *buf, size_t size, int col);
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33 void * xmalloc(size_t size);
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34
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35 // the largest text size we will store in memory. Otherwise we
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36 // will do a debug_write, then create a new record, and write the
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37 // text body directly to the file
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38 #define MAX_MESSAGE_SIZE 4096
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39
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40 void pst_debug(char *fmt, ...) {
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41 va_list ap;
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42 va_start(ap,fmt);
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43 vfprintf(stderr, fmt, ap);
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44 va_end(ap);
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45 }
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47
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48 #define NUM_COL 30
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49 void pst_debug_hexdumper(FILE *out, unsigned char *buf, size_t size, int col, int delta) {
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50 int off = 0, toff;
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51 int count = 0;
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52
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53 if (!out) return; // no file
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54 if (col == -1) col = NUM_COL;
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55 fprintf(out, "\n");
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56 while (off < size) {
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57 fprintf(out, "%06X\t:", off+delta);
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58 toff = off;
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59 while (count < col && off < size) {
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60 fprintf(out, "%02hhx ", buf[off]);
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61 off++; count++;
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62 }
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63 off = toff;
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64 while (count < col) {
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65 // only happens at end of block to pad the text over to the text column
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66 fprintf(out, " ");
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67 count++;
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68 }
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69 count = 0;
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70 fprintf(out, ":");
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71 while (count < col && off < size) {
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72 fprintf(out, "%c", isgraph(buf[off])?buf[off]:'.');
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73 off++; count ++;
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74 }
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75
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76 fprintf(out, "\n");
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77 count=0;
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78 }
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79
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80 fprintf(out, "\n");
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81 }
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82
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83
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84 FILE *debug_fp = NULL;
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85 unsigned int max_items=DEBUG_MAX_ITEMS, curr_items=0;
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86
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87
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88 void pst_debug_init(char* fname) {
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89 unsigned char version = DEBUG_VERSION;
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90 item_head = item_tail = NULL;
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91 curr_items = 0;
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92 if (debug_fp) pst_debug_close();
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93 if (!fname) return;
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94 if ((debug_fp = fopen(fname, "wb")) == NULL) {
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95 fprintf(stderr, "Opening of file %s failed\n", fname);
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96 exit(1);
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97 }
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98 fwrite(&version, 1, sizeof(char), debug_fp);
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99 }
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101
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102 // function must be called before pst_debug_msg. It sets up the
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103 // structure for the function that follows
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104 void pst_debug_msg_info(int line, char* file, int type) {
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105 char *x;
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106 if (!debug_fp) return; // no file
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107 info_ptr = (struct pst_debug_item*) xmalloc(sizeof(struct pst_debug_item));
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108 info_ptr->type = type;
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109 info_ptr->line = line;
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110 x = (func_head==NULL?"No Function":func_head->name);
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111 info_ptr->function = (char*) xmalloc(strlen(x)+1);
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112 strcpy(info_ptr->function, x);
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113
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114 info_ptr->file = (char*) xmalloc(strlen(file)+1);
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115 strcpy(info_ptr->file, file);
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116
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117 //put the current record on a temp linked list
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118 info_ptr->next = temp_list;
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119 temp_list = info_ptr;
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120 }
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121
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122
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123 void pst_debug_msg_text(char* fmt, ...) {
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124 va_list ap;
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125 int f, g;
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126 char x[2];
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127 struct pst_debug_item *temp;
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128 if (!debug_fp) return; // no file
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129 va_start(ap, fmt);
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130 // get the record off of the temp_list
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131 info_ptr = temp_list;
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132 if (info_ptr)
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133 temp_list = info_ptr->next;
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134 else {
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135 fprintf(stderr, "NULL info_ptr. ERROR!!\n");
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136 exit(-2);
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137 }
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138 // according to glibc 2.1, this should return the req. number of bytes for
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139 // the string
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140 #ifdef _WIN32
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141 // vsnprintf trick doesn't work. must use function called _vscprintf
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142 // cannot find much documentation about this on internet or anywhere.
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143 // I assume it isn't a standard function, but only in VisualC++
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144 f = _vscprintf(fmt, ap);
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145 #else
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146 f = vsnprintf(x, 1, fmt, ap);
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147 #endif
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148 va_end(ap); // must be called after vsnprintf()
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149
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150 if (f > 0 && f < MAX_MESSAGE_SIZE) {
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151 info_ptr->text = (char*) xmalloc(f+1);
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152 va_start(ap, fmt);
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153 if ((g = vsnprintf(info_ptr->text, f, fmt, ap)) == -1) {
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154 fprintf(stderr, "_debug_msg: Dieing! vsnprintf returned -1 for format \"%s\"\n", fmt);
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155 exit(-2);
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156 }
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157 va_end(ap);
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158 info_ptr->text[g] = '\0';
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159 if (f != g) {
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160 fprintf(stderr, "_debug_msg: f != g\n");
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161 }
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162 } else if (f > 0) { // it is over the max_message_size then
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163 f += strlen(info_ptr->file)+strlen(info_ptr->function);
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164 temp = info_ptr;
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165 pst_debug_write(); // dump the current messages
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166 info_ptr = temp;
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167 va_start(ap, fmt);
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168 pst_debug_write_msg(info_ptr, fmt, &ap, f);
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169 va_end(ap);
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170 free(info_ptr->function);
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171 free(info_ptr->file);
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172 free(info_ptr);
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173 info_ptr = NULL;
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174 return;
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175 } else {
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176 fprintf(stderr, "_debug_msg: error getting requested size of debug message\n");
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177 info_ptr->text = "ERROR Saving\n";
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178 }
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179
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180 if (!item_head)
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181 item_head = info_ptr;
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182
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183 info_ptr->next = NULL;
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184 if (item_tail) item_tail->next = info_ptr;
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185 item_tail = info_ptr;
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186
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187 if (++curr_items == max_items) {
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diff changeset
188 // here we will jump off and save the contents
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189 pst_debug_write();
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190 info_ptr = NULL;
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191 }
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192 }
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193
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194
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195 void pst_debug_hexdump(unsigned char *x, size_t y, int cols, int delta) {
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196 struct pst_debug_item *temp;
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197 if (!debug_fp) return; // no file
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198 info_ptr = temp_list;
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199 if (info_ptr) temp_list = info_ptr->next;
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200 temp = info_ptr;
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201 pst_debug_write();
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202 info_ptr = temp;
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diff changeset
203 pst_debug_write_hex(info_ptr, x, y, cols);
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204 free(info_ptr->function);
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205 free(info_ptr->file);
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206 free(info_ptr);
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207 info_ptr = NULL;
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208 }
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209
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diff changeset
210
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211 void pst_debug_func(char *function) {
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212 func_ptr = xmalloc (sizeof(struct pst_debug_func));
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213 func_ptr->name = xmalloc(strlen(function)+1);
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214 strcpy(func_ptr->name, function);
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215 func_ptr->next = func_head;
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216 func_head = func_ptr;
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217 }
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218
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219
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220 void pst_debug_func_ret() {
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221 //remove the head item
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222 func_ptr = func_head;
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223 if (func_head) {
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224 func_head = func_head->next;
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225 free(func_ptr->name);
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226 free(func_ptr);
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227 } else {
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228 DIE(("function list is empty!\n"));
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229 }
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230 }
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231
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diff changeset
232
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233 void pst_debug_close(void) {
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234 pst_debug_write();
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235 while (func_head) {
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236 func_ptr = func_head;
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237 func_head = func_head->next;
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238 free(func_ptr->name);
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239 free(func_ptr);
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240 }
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241 if (debug_fp) fclose(debug_fp);
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242 debug_fp = NULL;
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243 }
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244
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245
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246 void pst_debug_write() {
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diff changeset
247 size_t size, ptr, funcname, filename, text, end;
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248 char *buf = NULL, rec_type;
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249 if (!debug_fp) return; // no file
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diff changeset
250 off_t index_pos = ftell(debug_fp);
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251 off_t file_pos = index_pos;
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252 // add 2. One for the pointer to the next index,
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253 // one for the count of this index
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254 int index_size = ((curr_items+2) * sizeof(off_t));
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255 off_t *index;
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diff changeset
256 int index_ptr = 0;
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diff changeset
257 struct pst_debug_file_rec_m mfile_rec;
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258 struct pst_debug_file_rec_l lfile_rec;
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259
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260 if (curr_items == 0) return; // no items to write.
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261
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262 index = (off_t*)xmalloc(index_size);
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263 memset(index, 0, index_size); // valgrind, avoid writing uninitialized data
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264 file_pos += index_size;
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diff changeset
265 // write the index first, we will re-write it later, but
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266 // we want to allocate the space
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267 fwrite(index, index_size, 1, debug_fp);
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268 index[index_ptr++] = curr_items;
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269
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270 item_ptr = item_head;
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271 while (item_ptr) {
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272 file_pos = ftell(debug_fp);
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273 index[index_ptr++] = file_pos;
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274 size = strlen(item_ptr->function) +
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275 strlen(item_ptr->file) +
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276 strlen(item_ptr->text) + 3; //for the three \0s
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277 if (buf) free(buf);
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278 buf = xmalloc(size+1);
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279 ptr = 0;
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280 funcname=ptr;
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281 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->function)+1;
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282 filename=ptr;
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283 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->file)+1;
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284 text=ptr;
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285 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->text)+1;
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286 end=ptr;
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287 if (end > USHRT_MAX) { // bigger than can be stored in a short
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288 rec_type = 'L';
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289 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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290 lfile_rec.type = item_ptr->type;
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291 lfile_rec.line = item_ptr->line;
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292 lfile_rec.funcname = funcname;
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293 lfile_rec.filename = filename;
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294 lfile_rec.text = text;
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295 lfile_rec.end = end;
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296 fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp);
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297 } else {
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298 rec_type = 'M';
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299 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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300 mfile_rec.type = item_ptr->type;
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301 mfile_rec.line = item_ptr->line;
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302 mfile_rec.funcname = funcname;
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303 mfile_rec.filename = filename;
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304 mfile_rec.text = text;
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305 mfile_rec.end = end;
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306 fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp);
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307 }
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308 fwrite(buf, 1, ptr, debug_fp);
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309 if (buf) free(buf); buf = NULL;
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310 item_head = item_ptr->next;
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311 free(item_ptr->function);
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312 free(item_ptr->file);
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313 free(item_ptr->text);
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314 free(item_ptr);
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315 item_ptr = item_head;
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316 }
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317 curr_items = 0;
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318 index[index_ptr] = ftell(debug_fp);
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319
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320 // we should now have a complete index
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321 fseek(debug_fp, index_pos, SEEK_SET);
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322 fwrite(index, index_size, 1, debug_fp);
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diff changeset
323 fseek(debug_fp, 0, SEEK_END);
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324 item_ptr = item_head = item_tail = NULL;
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325 free(index);
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326 if (buf) free(buf);
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327 }
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328
33
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diff changeset
329
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diff changeset
330 void pst_debug_write_msg(struct pst_debug_item *item, char *fmt, va_list *ap, int size) {
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331 struct pst_debug_file_rec_l lfile_rec;
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332 struct pst_debug_file_rec_m mfile_rec;
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diff changeset
333 unsigned char rec_type;
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diff changeset
334 int index_size = 3 * sizeof(off_t);
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335 off_t index[3];
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diff changeset
336 off_t index_pos, file_pos;
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diff changeset
337 char zero='\0';
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diff changeset
338 unsigned int end;
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339 if (!debug_fp) return; // no file
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340 index[0] = 1; //only one item in this index
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341 index_pos = ftell(debug_fp);
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342 fwrite(index, index_size, 1, debug_fp);
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diff changeset
343
46
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344 index[1] = ftell(debug_fp);
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345
46
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346 if (size > USHRT_MAX) { // bigger than can be stored in a short
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347 rec_type = 'L';
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348 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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349 lfile_rec.type = item->type;
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350 lfile_rec.line = item->line;
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351 lfile_rec.funcname = 0;
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352 lfile_rec.filename = strlen(item->function)+1;
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353 lfile_rec.text = lfile_rec.filename+strlen(item->file)+1;
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354 fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp);
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355 } else {
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356 rec_type = 'M';
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357 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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358 mfile_rec.type = item->type;
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359 mfile_rec.line = item->line;
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360 mfile_rec.funcname = 0;
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361 mfile_rec.filename = strlen(item->function)+1;
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362 mfile_rec.text = mfile_rec.filename+strlen(item->file)+1;
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363 fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp);
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364 }
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365 file_pos = ftell(debug_fp);
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diff changeset
366 fwrite(item->function, strlen(item->function)+1, 1, debug_fp);
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367 fwrite(item->file, strlen(item->file)+1, 1, debug_fp);
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368 vfprintf(debug_fp, fmt, *ap);
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369 fwrite(&zero, 1, 1, debug_fp);
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370
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371 end = ftell(debug_fp)-file_pos;
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372
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373 index[2] = ftell(debug_fp);
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374 fseek(debug_fp, index_pos, SEEK_SET);
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375 fwrite(index, index_size, 1, debug_fp);
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376 if (size > USHRT_MAX) {
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377 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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378 lfile_rec.end = end;
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379 fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp);
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380 } else {
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381 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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382 mfile_rec.end = end;
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383 fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp);
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384 }
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385 fseek(debug_fp, 0, SEEK_END);
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386 }
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387
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diff changeset
388
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389 void pst_debug_write_hex(struct pst_debug_item *item, unsigned char *buf, size_t size, int col) {
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390 struct pst_debug_file_rec_l lfile_rec;
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391 unsigned char rec_type;
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392 int index_size = 3 * sizeof(off_t);
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393 off_t index_pos, file_pos, index[3];
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394 char zero='\0';
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395 if (!debug_fp) return; // no file
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396 index[0] = 1; // only one item in this index run
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397 index[1] = 0; // valgrind, avoid writing uninitialized data
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398 index[2] = 0; // ""
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399 index_pos = ftell(debug_fp);
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400 fwrite(index, index_size, 1, debug_fp);
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401 index[1] = ftell(debug_fp);
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402
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403 // always use the long
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404 rec_type = 'L';
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405 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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406 lfile_rec.funcname = 0;
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407 lfile_rec.filename = strlen(item->function)+1;
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408 lfile_rec.text = lfile_rec.filename+strlen(item->file)+1;
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409 lfile_rec.end = 0; // valgrind, avoid writing uninitialized data
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410 lfile_rec.line = item->line;
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411 lfile_rec.type = item->type;
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412 fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp);
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413
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414 file_pos = ftell(debug_fp);
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415 fwrite(item->function, strlen(item->function)+1, 1, debug_fp);
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416 fwrite(item->file, strlen(item->file)+1, 1, debug_fp);
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diff changeset
417
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418 pst_debug_hexdumper(debug_fp, buf, size, col, 0);
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419 fwrite(&zero, 1, 1, debug_fp);
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420 lfile_rec.end = ftell(debug_fp) - file_pos;
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diff changeset
421
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422 index[2] = ftell(debug_fp);
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423 fseek(debug_fp, index_pos, SEEK_SET);
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424 fwrite(index, index_size, 1, debug_fp);
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425 fwrite(&rec_type, 1, sizeof(char), debug_fp);
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426 fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp);
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427 fseek(debug_fp, 0, SEEK_END);
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428 }
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429
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diff changeset
430
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431 void *xmalloc(size_t size) {
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432 void *mem = malloc(size);
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433 if (!mem) {
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434 fprintf(stderr, "xMalloc: Out Of memory [req: %ld]\n", (long)size);
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435 exit(1);
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436 }
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437 return mem;
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438 }
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439