Mercurial > libpst
annotate src/debug.c @ 88:c664302d1606 stable-0-6-16
release 0.6.16
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Tue, 05 Aug 2008 10:04:23 -0700 |
| parents | 56fa05fd5271 |
| children | 631d02d30a1c |
| rev | line source |
|---|---|
| 48 | 1 |
| 2 #include "define.h" | |
| 3 | |
| 16 | 4 #include <stdio.h> |
| 5 #include <stdlib.h> | |
| 6 #include <stdarg.h> | |
| 7 #include <ctype.h> | |
| 8 #include <string.h> | |
| 9 #include <limits.h> | |
| 10 | |
| 46 | 11 struct pst_debug_item { |
| 12 int type; | |
| 13 char * function; | |
| 14 unsigned int line; | |
| 15 char * file; | |
| 16 char * text; | |
| 17 struct pst_debug_item *next; | |
| 16 | 18 } *item_head=NULL, *item_tail=NULL, *item_ptr=NULL, *info_ptr=NULL, *temp_list=NULL; |
| 19 | |
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20 |
| 46 | 21 struct pst_debug_func { |
| 22 char * name; | |
| 23 struct pst_debug_func *next; | |
| 16 | 24 } *func_head=NULL, *func_ptr=NULL; |
| 25 | |
| 26 | |
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27 void pst_debug_write_msg(struct pst_debug_item *item, const char *fmt, va_list *ap, int size); |
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28 void pst_debug_write_hex(struct pst_debug_item *item, char *buf, size_t size, int col); |
| 16 | 29 void * xmalloc(size_t size); |
| 30 | |
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31 size_t pst_debug_fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream) { |
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32 return fwrite(ptr, size, nitems, stream); |
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33 } |
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34 |
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35 |
| 16 | 36 // the largest text size we will store in memory. Otherwise we |
| 37 // will do a debug_write, then create a new record, and write the | |
| 38 // text body directly to the file | |
| 39 #define MAX_MESSAGE_SIZE 4096 | |
| 40 | |
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41 void pst_debug(const char *fmt, ...) { |
| 46 | 42 va_list ap; |
| 43 va_start(ap,fmt); | |
| 44 vfprintf(stderr, fmt, ap); | |
| 45 va_end(ap); | |
| 16 | 46 } |
| 47 | |
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48 |
| 16 | 49 #define NUM_COL 30 |
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50 void pst_debug_hexdumper(FILE *out, char *buf, size_t size, int col, int delta) { |
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51 size_t off = 0, toff; |
| 46 | 52 int count = 0; |
| 16 | 53 |
| 46 | 54 if (!out) return; // no file |
| 55 if (col == -1) col = NUM_COL; | |
| 56 fprintf(out, "\n"); | |
| 57 while (off < size) { | |
| 58 fprintf(out, "%06X\t:", off+delta); | |
| 59 toff = off; | |
| 60 while (count < col && off < size) { | |
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61 fprintf(out, "%02hhx ", (unsigned char)buf[off]); |
| 46 | 62 off++; count++; |
| 63 } | |
| 64 off = toff; | |
| 65 while (count < col) { | |
| 66 // only happens at end of block to pad the text over to the text column | |
| 67 fprintf(out, " "); | |
| 68 count++; | |
| 69 } | |
| 70 count = 0; | |
| 71 fprintf(out, ":"); | |
| 72 while (count < col && off < size) { | |
| 73 fprintf(out, "%c", isgraph(buf[off])?buf[off]:'.'); | |
| 74 off++; count ++; | |
| 75 } | |
| 16 | 76 |
| 46 | 77 fprintf(out, "\n"); |
| 78 count=0; | |
| 79 } | |
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80 |
| 46 | 81 fprintf(out, "\n"); |
| 16 | 82 } |
| 83 | |
| 84 | |
| 85 FILE *debug_fp = NULL; | |
| 86 unsigned int max_items=DEBUG_MAX_ITEMS, curr_items=0; | |
| 87 | |
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88 |
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89 void pst_debug_init(const char* fname) { |
| 46 | 90 unsigned char version = DEBUG_VERSION; |
| 91 item_head = item_tail = NULL; | |
| 92 curr_items = 0; | |
| 93 if (debug_fp) pst_debug_close(); | |
| 94 if (!fname) return; | |
| 95 if ((debug_fp = fopen(fname, "wb")) == NULL) { | |
| 96 fprintf(stderr, "Opening of file %s failed\n", fname); | |
| 97 exit(1); | |
| 98 } | |
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99 pst_debug_fwrite(&version, 1, sizeof(char), debug_fp); |
| 16 | 100 } |
| 101 | |
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102 |
| 46 | 103 // function must be called before pst_debug_msg. It sets up the |
| 16 | 104 // structure for the function that follows |
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105 void pst_debug_msg_info(int line, const char* file, int type) { |
| 46 | 106 char *x; |
| 107 if (!debug_fp) return; // no file | |
| 108 info_ptr = (struct pst_debug_item*) xmalloc(sizeof(struct pst_debug_item)); | |
| 109 info_ptr->type = type; | |
| 110 info_ptr->line = line; | |
| 111 x = (func_head==NULL?"No Function":func_head->name); | |
| 112 info_ptr->function = (char*) xmalloc(strlen(x)+1); | |
| 113 strcpy(info_ptr->function, x); | |
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114 |
| 46 | 115 info_ptr->file = (char*) xmalloc(strlen(file)+1); |
| 116 strcpy(info_ptr->file, file); | |
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117 |
| 46 | 118 //put the current record on a temp linked list |
| 119 info_ptr->next = temp_list; | |
| 120 temp_list = info_ptr; | |
| 16 | 121 } |
| 122 | |
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123 |
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124 void pst_debug_msg_text(const char* fmt, ...) { |
| 46 | 125 va_list ap; |
| 126 int f, g; | |
| 127 char x[2]; | |
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128 #ifdef _WIN32 |
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129 char *buf = NULL; |
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130 #endif |
| 46 | 131 struct pst_debug_item *temp; |
| 132 if (!debug_fp) return; // no file | |
| 133 // get the record off of the temp_list | |
| 134 info_ptr = temp_list; | |
| 135 if (info_ptr) | |
| 136 temp_list = info_ptr->next; | |
| 137 else { | |
| 138 fprintf(stderr, "NULL info_ptr. ERROR!!\n"); | |
| 139 exit(-2); | |
| 140 } | |
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141 |
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142 #ifdef _WIN32 |
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143 // vsnprintf trick doesn't work on msvc. |
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144 g = 2000; |
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145 f = -1; |
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146 while (f < 0) { |
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147 buf = realloc(buf, g+1); |
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148 va_start(ap, fmt); |
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149 f = vsnprintf(buf, g, fmt, ap); |
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150 va_end(ap); |
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151 g += g/2; |
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152 } |
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153 free(buf); |
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154 #else |
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155 // according to glibc 2.1, this should return the req. number of bytes for |
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156 // the string |
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157 va_start(ap, fmt); |
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158 f = vsnprintf(x, 1, fmt, ap); |
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159 va_end(ap); |
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160 #endif |
| 16 | 161 |
| 46 | 162 if (f > 0 && f < MAX_MESSAGE_SIZE) { |
| 163 info_ptr->text = (char*) xmalloc(f+1); | |
| 164 va_start(ap, fmt); | |
| 165 if ((g = vsnprintf(info_ptr->text, f, fmt, ap)) == -1) { | |
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166 fprintf(stderr, "_debug_msg: Dying! vsnprintf returned -1 for format \"%s\"\n", fmt); |
| 46 | 167 exit(-2); |
| 168 } | |
| 169 va_end(ap); | |
| 170 info_ptr->text[g] = '\0'; | |
| 171 if (f != g) { | |
| 172 fprintf(stderr, "_debug_msg: f != g\n"); | |
| 173 } | |
| 174 } else if (f > 0) { // it is over the max_message_size then | |
| 175 f += strlen(info_ptr->file)+strlen(info_ptr->function); | |
| 176 temp = info_ptr; | |
| 177 pst_debug_write(); // dump the current messages | |
| 178 info_ptr = temp; | |
| 179 va_start(ap, fmt); | |
| 180 pst_debug_write_msg(info_ptr, fmt, &ap, f); | |
| 181 va_end(ap); | |
| 182 free(info_ptr->function); | |
| 183 free(info_ptr->file); | |
| 184 free(info_ptr); | |
| 185 info_ptr = NULL; | |
| 186 return; | |
| 187 } else { | |
| 188 fprintf(stderr, "_debug_msg: error getting requested size of debug message\n"); | |
| 189 info_ptr->text = "ERROR Saving\n"; | |
| 190 } | |
| 16 | 191 |
| 46 | 192 if (!item_head) |
| 193 item_head = info_ptr; | |
| 16 | 194 |
| 46 | 195 info_ptr->next = NULL; |
| 196 if (item_tail) item_tail->next = info_ptr; | |
| 197 item_tail = info_ptr; | |
| 16 | 198 |
| 46 | 199 if (++curr_items == max_items) { |
| 200 // here we will jump off and save the contents | |
| 201 pst_debug_write(); | |
| 202 info_ptr = NULL; | |
| 203 } | |
| 16 | 204 } |
| 205 | |
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206 |
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207 void pst_debug_hexdump(char *x, size_t y, int cols, int delta) { |
| 46 | 208 struct pst_debug_item *temp; |
| 209 if (!debug_fp) return; // no file | |
| 210 info_ptr = temp_list; | |
| 211 if (info_ptr) temp_list = info_ptr->next; | |
| 212 temp = info_ptr; | |
| 213 pst_debug_write(); | |
| 214 info_ptr = temp; | |
| 215 pst_debug_write_hex(info_ptr, x, y, cols); | |
| 216 free(info_ptr->function); | |
| 217 free(info_ptr->file); | |
| 218 free(info_ptr); | |
| 219 info_ptr = NULL; | |
| 16 | 220 } |
| 221 | |
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222 |
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223 void pst_debug_func(const char *function) { |
| 46 | 224 func_ptr = xmalloc (sizeof(struct pst_debug_func)); |
| 225 func_ptr->name = xmalloc(strlen(function)+1); | |
| 226 strcpy(func_ptr->name, function); | |
| 227 func_ptr->next = func_head; | |
| 228 func_head = func_ptr; | |
| 16 | 229 } |
| 230 | |
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231 |
| 46 | 232 void pst_debug_func_ret() { |
| 233 //remove the head item | |
| 234 func_ptr = func_head; | |
| 235 if (func_head) { | |
| 236 func_head = func_head->next; | |
| 237 free(func_ptr->name); | |
| 238 free(func_ptr); | |
| 239 } else { | |
| 240 DIE(("function list is empty!\n")); | |
| 241 } | |
| 16 | 242 } |
| 243 | |
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244 |
| 46 | 245 void pst_debug_close(void) { |
| 246 pst_debug_write(); | |
| 247 while (func_head) { | |
| 248 func_ptr = func_head; | |
| 249 func_head = func_head->next; | |
| 250 free(func_ptr->name); | |
| 251 free(func_ptr); | |
| 252 } | |
| 253 if (debug_fp) fclose(debug_fp); | |
| 254 debug_fp = NULL; | |
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255 } |
| 16 | 256 |
| 257 | |
| 46 | 258 void pst_debug_write() { |
| 259 size_t size, ptr, funcname, filename, text, end; | |
| 260 char *buf = NULL, rec_type; | |
| 261 if (!debug_fp) return; // no file | |
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262 off_t index_pos = ftello(debug_fp); |
| 43 | 263 off_t file_pos = index_pos; |
| 46 | 264 // add 2. One for the pointer to the next index, |
| 265 // one for the count of this index | |
| 266 int index_size = ((curr_items+2) * sizeof(off_t)); | |
| 267 off_t *index; | |
| 268 int index_ptr = 0; | |
| 269 struct pst_debug_file_rec_m mfile_rec; | |
| 270 struct pst_debug_file_rec_l lfile_rec; | |
| 16 | 271 |
| 46 | 272 if (curr_items == 0) return; // no items to write. |
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273 |
| 46 | 274 index = (off_t*)xmalloc(index_size); |
| 275 memset(index, 0, index_size); // valgrind, avoid writing uninitialized data | |
| 276 file_pos += index_size; | |
| 277 // write the index first, we will re-write it later, but | |
| 278 // we want to allocate the space | |
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279 pst_debug_fwrite(index, index_size, 1, debug_fp); |
| 46 | 280 index[index_ptr++] = curr_items; |
| 16 | 281 |
| 46 | 282 item_ptr = item_head; |
| 283 while (item_ptr) { | |
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284 file_pos = ftello(debug_fp); |
| 46 | 285 index[index_ptr++] = file_pos; |
| 286 size = strlen(item_ptr->function) + | |
| 287 strlen(item_ptr->file) + | |
| 288 strlen(item_ptr->text) + 3; //for the three \0s | |
| 289 if (buf) free(buf); | |
| 290 buf = xmalloc(size+1); | |
| 291 ptr = 0; | |
| 292 funcname=ptr; | |
| 293 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->function)+1; | |
| 294 filename=ptr; | |
| 295 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->file)+1; | |
| 296 text=ptr; | |
| 297 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->text)+1; | |
| 298 end=ptr; | |
| 299 if (end > USHRT_MAX) { // bigger than can be stored in a short | |
| 300 rec_type = 'L'; | |
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301 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 302 lfile_rec.type = item_ptr->type; |
| 303 lfile_rec.line = item_ptr->line; | |
| 304 lfile_rec.funcname = funcname; | |
| 305 lfile_rec.filename = filename; | |
| 306 lfile_rec.text = text; | |
| 307 lfile_rec.end = end; | |
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308 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 309 } else { |
| 310 rec_type = 'M'; | |
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311 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 312 mfile_rec.type = item_ptr->type; |
| 313 mfile_rec.line = item_ptr->line; | |
| 314 mfile_rec.funcname = funcname; | |
| 315 mfile_rec.filename = filename; | |
| 316 mfile_rec.text = text; | |
| 317 mfile_rec.end = end; | |
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318 pst_debug_fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp); |
| 46 | 319 } |
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320 pst_debug_fwrite(buf, 1, ptr, debug_fp); |
| 46 | 321 if (buf) free(buf); buf = NULL; |
| 322 item_head = item_ptr->next; | |
| 323 free(item_ptr->function); | |
| 324 free(item_ptr->file); | |
| 325 free(item_ptr->text); | |
| 326 free(item_ptr); | |
| 327 item_ptr = item_head; | |
| 328 } | |
| 329 curr_items = 0; | |
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330 index[index_ptr] = ftello(debug_fp); |
| 16 | 331 |
| 46 | 332 // we should now have a complete index |
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333 fseeko(debug_fp, index_pos, SEEK_SET); |
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334 pst_debug_fwrite(index, index_size, 1, debug_fp); |
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335 fseeko(debug_fp, 0, SEEK_END); |
| 46 | 336 item_ptr = item_head = item_tail = NULL; |
| 337 free(index); | |
| 338 if (buf) free(buf); | |
| 16 | 339 } |
| 340 | |
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341 |
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342 void pst_debug_write_msg(struct pst_debug_item *item, const char *fmt, va_list *ap, int size) { |
| 46 | 343 struct pst_debug_file_rec_l lfile_rec; |
| 344 struct pst_debug_file_rec_m mfile_rec; | |
| 345 unsigned char rec_type; | |
| 346 int index_size = 3 * sizeof(off_t); | |
| 347 off_t index[3]; | |
| 348 off_t index_pos, file_pos; | |
| 349 char zero='\0'; | |
| 350 unsigned int end; | |
| 351 if (!debug_fp) return; // no file | |
| 352 index[0] = 1; //only one item in this index | |
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353 index_pos = ftello(debug_fp); |
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354 pst_debug_fwrite(index, index_size, 1, debug_fp); |
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355 |
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356 index[1] = ftello(debug_fp); |
| 16 | 357 |
| 46 | 358 if (size > USHRT_MAX) { // bigger than can be stored in a short |
| 359 rec_type = 'L'; | |
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360 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 361 lfile_rec.type = item->type; |
| 362 lfile_rec.line = item->line; | |
| 363 lfile_rec.funcname = 0; | |
| 364 lfile_rec.filename = strlen(item->function)+1; | |
| 365 lfile_rec.text = lfile_rec.filename+strlen(item->file)+1; | |
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366 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 367 } else { |
| 368 rec_type = 'M'; | |
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369 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 370 mfile_rec.type = item->type; |
| 371 mfile_rec.line = item->line; | |
| 372 mfile_rec.funcname = 0; | |
| 373 mfile_rec.filename = strlen(item->function)+1; | |
| 374 mfile_rec.text = mfile_rec.filename+strlen(item->file)+1; | |
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375 pst_debug_fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp); |
| 46 | 376 } |
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377 file_pos = ftello(debug_fp); |
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378 pst_debug_fwrite(item->function, strlen(item->function)+1, 1, debug_fp); |
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379 pst_debug_fwrite(item->file, strlen(item->file)+1, 1, debug_fp); |
| 46 | 380 vfprintf(debug_fp, fmt, *ap); |
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381 pst_debug_fwrite(&zero, 1, 1, debug_fp); |
| 16 | 382 |
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383 end = (unsigned int) (ftello(debug_fp) - file_pos); |
| 16 | 384 |
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385 index[2] = ftello(debug_fp); |
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386 fseeko(debug_fp, index_pos, SEEK_SET); |
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387 pst_debug_fwrite(index, index_size, 1, debug_fp); |
| 46 | 388 if (size > USHRT_MAX) { |
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389 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 390 lfile_rec.end = end; |
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391 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 392 } else { |
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393 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 394 mfile_rec.end = end; |
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395 pst_debug_fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp); |
| 46 | 396 } |
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397 fseeko(debug_fp, 0, SEEK_END); |
| 16 | 398 } |
| 399 | |
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400 |
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401 void pst_debug_write_hex(struct pst_debug_item *item, char *buf, size_t size, int col) { |
| 46 | 402 struct pst_debug_file_rec_l lfile_rec; |
| 403 unsigned char rec_type; | |
| 404 int index_size = 3 * sizeof(off_t); | |
| 405 off_t index_pos, file_pos, index[3]; | |
| 406 char zero='\0'; | |
| 407 if (!debug_fp) return; // no file | |
| 408 index[0] = 1; // only one item in this index run | |
| 409 index[1] = 0; // valgrind, avoid writing uninitialized data | |
| 410 index[2] = 0; // "" | |
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411 index_pos = ftello(debug_fp); |
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412 pst_debug_fwrite(index, index_size, 1, debug_fp); |
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413 index[1] = ftello(debug_fp); |
| 16 | 414 |
| 46 | 415 // always use the long |
| 416 rec_type = 'L'; | |
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417 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 418 lfile_rec.funcname = 0; |
| 419 lfile_rec.filename = strlen(item->function)+1; | |
| 420 lfile_rec.text = lfile_rec.filename+strlen(item->file)+1; | |
| 421 lfile_rec.end = 0; // valgrind, avoid writing uninitialized data | |
| 422 lfile_rec.line = item->line; | |
| 423 lfile_rec.type = item->type; | |
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424 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 16 | 425 |
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426 file_pos = ftello(debug_fp); |
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427 pst_debug_fwrite(item->function, strlen(item->function)+1, 1, debug_fp); |
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428 pst_debug_fwrite(item->file, strlen(item->file)+1, 1, debug_fp); |
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429 |
| 46 | 430 pst_debug_hexdumper(debug_fp, buf, size, col, 0); |
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431 pst_debug_fwrite(&zero, 1, 1, debug_fp); |
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432 lfile_rec.end = ftello(debug_fp) - file_pos; |
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433 |
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434 index[2] = ftello(debug_fp); |
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435 fseeko(debug_fp, index_pos, SEEK_SET); |
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436 pst_debug_fwrite(index, index_size, 1, debug_fp); |
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437 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
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438 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
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439 fseeko(debug_fp, 0, SEEK_END); |
| 16 | 440 } |
| 441 | |
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442 |
| 36 | 443 void *xmalloc(size_t size) { |
| 46 | 444 void *mem = malloc(size); |
| 445 if (!mem) { | |
| 446 fprintf(stderr, "xMalloc: Out Of memory [req: %ld]\n", (long)size); | |
| 447 exit(1); | |
| 448 } | |
| 449 return mem; | |
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450 } |
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451 |