Mercurial > libpst

annotate src/debug.c @ 350:7a91e30826d8 stable-0-6-65

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Hans Liss - debug level output
author Carl Byington <carl@five-ten-sg.com>
date Fri, 11 Sep 2015 10:18:03 -0700
parents cc8ee701f190
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
48
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diff changeset
1 #include "define.h"
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2
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3
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4 struct pst_debug_func {
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5 char * name;
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6 struct pst_debug_func *next;
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7 };
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9
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10 #define NUM_COL 32
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11 #define MAX_DEPTH 32
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12
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13 static struct pst_debug_func *func_head = NULL;
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14 static int func_depth = 0;
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15 static int pst_debuglevel = 0;
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16 static char indent[MAX_DEPTH*4+1];
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17 static FILE *debug_fp = NULL;
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18 #ifdef HAVE_SEMAPHORE_H
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19 static sem_t* debug_mutex = NULL;
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20 #endif
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22
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23 void pst_debug_setlevel(int level)
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24 {
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25 pst_debuglevel = level;
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26 }
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27
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28 void pst_debug_lock()
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29 {
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30 #ifdef HAVE_SEMAPHORE_H
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31 if (debug_mutex) sem_wait(debug_mutex);
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32 #endif
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33 }
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36 void pst_debug_unlock()
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37 {
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38 #ifdef HAVE_SEMAPHORE_H
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39 if (debug_mutex) sem_post(debug_mutex);
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40 #endif
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41 }
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43
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44 void pst_debug_init(const char* fname, void* output_mutex) {
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45 #ifdef HAVE_SEMAPHORE_H
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46 debug_mutex = (sem_t*)output_mutex;
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47 #endif
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48 memset(indent, ' ', MAX_DEPTH*4);
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49 indent[MAX_DEPTH*4] = '\0';
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50 if (debug_fp) pst_debug_close();
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51 if (!fname) return;
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52 if ((debug_fp = fopen(fname, "wb")) == NULL) {
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53 fprintf(stderr, "Opening of file %s failed\n", fname);
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54 exit(1);
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55 }
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56 }
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58
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59 void pst_debug_func(int level, const char* function) {
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60 if (pst_debuglevel > level) return;
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61 struct pst_debug_func *func_ptr = pst_malloc (sizeof(struct pst_debug_func));
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62 func_ptr->name = strdup(function);
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63 func_ptr->next = func_head;
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64 func_head = func_ptr;
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65 func_depth++;
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66 }
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69 void pst_debug_func_ret(int level) {
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70 if (pst_debuglevel > level) return;
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71 //remove the head item
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72 struct pst_debug_func *func_ptr = func_head;
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73 if (func_head) {
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74 func_head = func_head->next;
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75 free(func_ptr->name);
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76 free(func_ptr);
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77 func_depth--;
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78 } else {
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79 DIE(("function list is empty!\n"));
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80 }
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81 }
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83
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84 static void pst_debug_info(int level, int line, const char* file);
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85 static void pst_debug_info(int level, int line, const char* file) {
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86 if (pst_debuglevel > level) return;
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87 int le = (func_depth > MAX_DEPTH) ? MAX_DEPTH : func_depth;
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88 if (le > 0) le--;
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89 char *func = (func_head ? func_head->name : "No Function");
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90 pst_debug_lock();
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91 fprintf(debug_fp, "%06d %.*s%s %s(%d) ", getpid(), le*4, indent, func, file, line);
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92 }
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93
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94
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95 void pst_debug(int level, int line, const char* file, const char *fmt, ...) {
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96 if (pst_debuglevel > level) return;
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97 if (debug_fp) {
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98 pst_debug_info(level, line, file);
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99 va_list ap;
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100 va_start(ap,fmt);
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101 vfprintf(debug_fp, fmt, ap);
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102 va_end(ap);
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103 fflush(debug_fp);
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104 pst_debug_unlock();
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105 }
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106 }
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108
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109 void pst_debug_hexdump(int level, int line, const char *file, const char *buf, size_t size, int cols, int delta) {
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110 if (pst_debuglevel > level) return;
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111 if (debug_fp) {
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112 pst_debug_info(level, line, file);
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113 pst_debug_hexdumper(debug_fp, buf, size, cols, delta);
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114 pst_debug_unlock();
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115 }
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116 }
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117
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118
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119 void pst_debug_hexdumper(FILE *out, const char *buf, size_t size, int cols, int delta) {
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120 int le = (func_depth > MAX_DEPTH) ? MAX_DEPTH : func_depth;
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121 size_t off = 0, toff;
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122 int count = 0;
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123
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124 if (!out) return; // no file
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125
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126 if (cols == -1) cols = NUM_COL;
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127 fprintf(out, "\n");
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128 while (off < size) {
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129 fprintf(out, "%06d %.*s%06"PRIx64"\t:", getpid(), le*4, indent, (int64_t)(off+delta));
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130 toff = off;
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131 while (count < cols && off < size) {
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132 fprintf(out, "%02hhx ", (unsigned char)buf[off]);
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133 off++; count++;
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134 }
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135 off = toff;
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136 while (count < cols) {
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137 // only happens at end of block to pad the text over to the text column
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138 fprintf(out, " ");
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139 count++;
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140 }
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141 count = 0;
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142 fprintf(out, ":");
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143 while (count < cols && off < size) {
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144 fprintf(out, "%c", isgraph(buf[off])?buf[off]:'.');
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145 off++; count ++;
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146 }
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147
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148 fprintf(out, "\n");
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149 count=0;
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150 }
33
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151
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152 fprintf(out, "\n");
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153 fflush(out);
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154 }
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155
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156
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157 void pst_debug_close(void) {
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158 while (func_head) {
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159 struct pst_debug_func *func_ptr = func_head;
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160 func_head = func_head->next;
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161 free(func_ptr->name);
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162 free(func_ptr);
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163 }
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164 if (debug_fp) fclose(debug_fp);
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165 debug_fp = NULL;
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166 }
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167
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168
172
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169 void *pst_malloc(size_t size) {
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170 void *mem = malloc(size);
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171 if (!mem) {
172
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172 fprintf(stderr, "pst_malloc: Out Of memory [req: %ld]\n", (long)size);
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173 exit(1);
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174 }
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175 return mem;
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176 }
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177
289
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178
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179 void *pst_realloc(void *ptr, size_t size) {
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180 void *mem = realloc(ptr, size);
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181 if (!mem) {
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182 fprintf(stderr, "pst_realloc: Out Of memory [req: %ld]\n", (long)size);
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183 exit(1);
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184 }
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185 return mem;
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186 }