Mercurial > libpst
annotate src/debug.c @ 74:6f82d13e9300
Added tag stable-0-6-10 for changeset 3cb02cb1e6cd
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Thu, 29 May 2008 18:59:38 -0700 |
| parents | 3cb02cb1e6cd |
| children | 987aa872294e |
| 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 | |
| 11 #ifdef _WIN32 | |
| 12 # define vsnprintf _vsnprintf | |
| 13 #endif | |
| 14 | |
| 46 | 15 struct pst_debug_item { |
| 16 int type; | |
| 17 char * function; | |
| 18 unsigned int line; | |
| 19 char * file; | |
| 20 char * text; | |
| 21 struct pst_debug_item *next; | |
| 16 | 22 } *item_head=NULL, *item_tail=NULL, *item_ptr=NULL, *info_ptr=NULL, *temp_list=NULL; |
| 23 | |
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24 |
| 46 | 25 struct pst_debug_func { |
| 26 char * name; | |
| 27 struct pst_debug_func *next; | |
| 16 | 28 } *func_head=NULL, *func_ptr=NULL; |
| 29 | |
| 30 | |
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31 void pst_debug_write_msg(struct pst_debug_item *item, const char *fmt, va_list *ap, int size); |
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32 void pst_debug_write_hex(struct pst_debug_item *item, char *buf, size_t size, int col); |
| 16 | 33 void * xmalloc(size_t size); |
| 34 | |
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35 size_t pst_debug_fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream) { |
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36 return fwrite(ptr, size, nitems, stream); |
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37 } |
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38 |
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39 |
| 16 | 40 // the largest text size we will store in memory. Otherwise we |
| 41 // will do a debug_write, then create a new record, and write the | |
| 42 // text body directly to the file | |
| 43 #define MAX_MESSAGE_SIZE 4096 | |
| 44 | |
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45 void pst_debug(const char *fmt, ...) { |
| 46 | 46 va_list ap; |
| 47 va_start(ap,fmt); | |
| 48 vfprintf(stderr, fmt, ap); | |
| 49 va_end(ap); | |
| 16 | 50 } |
| 51 | |
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52 |
| 16 | 53 #define NUM_COL 30 |
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54 void pst_debug_hexdumper(FILE *out, char *buf, size_t size, int col, int delta) { |
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55 size_t off = 0, toff; |
| 46 | 56 int count = 0; |
| 16 | 57 |
| 46 | 58 if (!out) return; // no file |
| 59 if (col == -1) col = NUM_COL; | |
| 60 fprintf(out, "\n"); | |
| 61 while (off < size) { | |
| 62 fprintf(out, "%06X\t:", off+delta); | |
| 63 toff = off; | |
| 64 while (count < col && off < size) { | |
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65 fprintf(out, "%02hhx ", (unsigned char)buf[off]); |
| 46 | 66 off++; count++; |
| 67 } | |
| 68 off = toff; | |
| 69 while (count < col) { | |
| 70 // only happens at end of block to pad the text over to the text column | |
| 71 fprintf(out, " "); | |
| 72 count++; | |
| 73 } | |
| 74 count = 0; | |
| 75 fprintf(out, ":"); | |
| 76 while (count < col && off < size) { | |
| 77 fprintf(out, "%c", isgraph(buf[off])?buf[off]:'.'); | |
| 78 off++; count ++; | |
| 79 } | |
| 16 | 80 |
| 46 | 81 fprintf(out, "\n"); |
| 82 count=0; | |
| 83 } | |
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84 |
| 46 | 85 fprintf(out, "\n"); |
| 16 | 86 } |
| 87 | |
| 88 | |
| 89 FILE *debug_fp = NULL; | |
| 90 unsigned int max_items=DEBUG_MAX_ITEMS, curr_items=0; | |
| 91 | |
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92 |
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93 void pst_debug_init(const char* fname) { |
| 46 | 94 unsigned char version = DEBUG_VERSION; |
| 95 item_head = item_tail = NULL; | |
| 96 curr_items = 0; | |
| 97 if (debug_fp) pst_debug_close(); | |
| 98 if (!fname) return; | |
| 99 if ((debug_fp = fopen(fname, "wb")) == NULL) { | |
| 100 fprintf(stderr, "Opening of file %s failed\n", fname); | |
| 101 exit(1); | |
| 102 } | |
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103 pst_debug_fwrite(&version, 1, sizeof(char), debug_fp); |
| 16 | 104 } |
| 105 | |
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106 |
| 46 | 107 // function must be called before pst_debug_msg. It sets up the |
| 16 | 108 // structure for the function that follows |
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109 void pst_debug_msg_info(int line, const char* file, int type) { |
| 46 | 110 char *x; |
| 111 if (!debug_fp) return; // no file | |
| 112 info_ptr = (struct pst_debug_item*) xmalloc(sizeof(struct pst_debug_item)); | |
| 113 info_ptr->type = type; | |
| 114 info_ptr->line = line; | |
| 115 x = (func_head==NULL?"No Function":func_head->name); | |
| 116 info_ptr->function = (char*) xmalloc(strlen(x)+1); | |
| 117 strcpy(info_ptr->function, x); | |
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118 |
| 46 | 119 info_ptr->file = (char*) xmalloc(strlen(file)+1); |
| 120 strcpy(info_ptr->file, file); | |
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121 |
| 46 | 122 //put the current record on a temp linked list |
| 123 info_ptr->next = temp_list; | |
| 124 temp_list = info_ptr; | |
| 16 | 125 } |
| 126 | |
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127 |
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128 void pst_debug_msg_text(const char* fmt, ...) { |
| 46 | 129 va_list ap; |
| 130 int f, g; | |
| 131 char x[2]; | |
| 132 struct pst_debug_item *temp; | |
| 133 if (!debug_fp) return; // no file | |
| 134 va_start(ap, fmt); | |
| 135 // get the record off of the temp_list | |
| 136 info_ptr = temp_list; | |
| 137 if (info_ptr) | |
| 138 temp_list = info_ptr->next; | |
| 139 else { | |
| 140 fprintf(stderr, "NULL info_ptr. ERROR!!\n"); | |
| 141 exit(-2); | |
| 142 } | |
| 143 // according to glibc 2.1, this should return the req. number of bytes for | |
| 144 // the string | |
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145 #ifdef _WIN32 |
| 46 | 146 // vsnprintf trick doesn't work. must use function called _vscprintf |
| 147 // cannot find much documentation about this on internet or anywhere. | |
| 148 // I assume it isn't a standard function, but only in VisualC++ | |
| 149 f = _vscprintf(fmt, ap); | |
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150 #else |
| 46 | 151 f = vsnprintf(x, 1, fmt, ap); |
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152 #endif |
| 46 | 153 va_end(ap); // must be called after vsnprintf() |
| 16 | 154 |
| 46 | 155 if (f > 0 && f < MAX_MESSAGE_SIZE) { |
| 156 info_ptr->text = (char*) xmalloc(f+1); | |
| 157 va_start(ap, fmt); | |
| 158 if ((g = vsnprintf(info_ptr->text, f, fmt, ap)) == -1) { | |
| 159 fprintf(stderr, "_debug_msg: Dieing! vsnprintf returned -1 for format \"%s\"\n", fmt); | |
| 160 exit(-2); | |
| 161 } | |
| 162 va_end(ap); | |
| 163 info_ptr->text[g] = '\0'; | |
| 164 if (f != g) { | |
| 165 fprintf(stderr, "_debug_msg: f != g\n"); | |
| 166 } | |
| 167 } else if (f > 0) { // it is over the max_message_size then | |
| 168 f += strlen(info_ptr->file)+strlen(info_ptr->function); | |
| 169 temp = info_ptr; | |
| 170 pst_debug_write(); // dump the current messages | |
| 171 info_ptr = temp; | |
| 172 va_start(ap, fmt); | |
| 173 pst_debug_write_msg(info_ptr, fmt, &ap, f); | |
| 174 va_end(ap); | |
| 175 free(info_ptr->function); | |
| 176 free(info_ptr->file); | |
| 177 free(info_ptr); | |
| 178 info_ptr = NULL; | |
| 179 return; | |
| 180 } else { | |
| 181 fprintf(stderr, "_debug_msg: error getting requested size of debug message\n"); | |
| 182 info_ptr->text = "ERROR Saving\n"; | |
| 183 } | |
| 16 | 184 |
| 46 | 185 if (!item_head) |
| 186 item_head = info_ptr; | |
| 16 | 187 |
| 46 | 188 info_ptr->next = NULL; |
| 189 if (item_tail) item_tail->next = info_ptr; | |
| 190 item_tail = info_ptr; | |
| 16 | 191 |
| 46 | 192 if (++curr_items == max_items) { |
| 193 // here we will jump off and save the contents | |
| 194 pst_debug_write(); | |
| 195 info_ptr = NULL; | |
| 196 } | |
| 16 | 197 } |
| 198 | |
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199 |
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200 void pst_debug_hexdump(char *x, size_t y, int cols, int delta) { |
| 46 | 201 struct pst_debug_item *temp; |
| 202 if (!debug_fp) return; // no file | |
| 203 info_ptr = temp_list; | |
| 204 if (info_ptr) temp_list = info_ptr->next; | |
| 205 temp = info_ptr; | |
| 206 pst_debug_write(); | |
| 207 info_ptr = temp; | |
| 208 pst_debug_write_hex(info_ptr, x, y, cols); | |
| 209 free(info_ptr->function); | |
| 210 free(info_ptr->file); | |
| 211 free(info_ptr); | |
| 212 info_ptr = NULL; | |
| 16 | 213 } |
| 214 | |
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215 |
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216 void pst_debug_func(const char *function) { |
| 46 | 217 func_ptr = xmalloc (sizeof(struct pst_debug_func)); |
| 218 func_ptr->name = xmalloc(strlen(function)+1); | |
| 219 strcpy(func_ptr->name, function); | |
| 220 func_ptr->next = func_head; | |
| 221 func_head = func_ptr; | |
| 16 | 222 } |
| 223 | |
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224 |
| 46 | 225 void pst_debug_func_ret() { |
| 226 //remove the head item | |
| 227 func_ptr = func_head; | |
| 228 if (func_head) { | |
| 229 func_head = func_head->next; | |
| 230 free(func_ptr->name); | |
| 231 free(func_ptr); | |
| 232 } else { | |
| 233 DIE(("function list is empty!\n")); | |
| 234 } | |
| 16 | 235 } |
| 236 | |
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237 |
| 46 | 238 void pst_debug_close(void) { |
| 239 pst_debug_write(); | |
| 240 while (func_head) { | |
| 241 func_ptr = func_head; | |
| 242 func_head = func_head->next; | |
| 243 free(func_ptr->name); | |
| 244 free(func_ptr); | |
| 245 } | |
| 246 if (debug_fp) fclose(debug_fp); | |
| 247 debug_fp = NULL; | |
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248 } |
| 16 | 249 |
| 250 | |
| 46 | 251 void pst_debug_write() { |
| 252 size_t size, ptr, funcname, filename, text, end; | |
| 253 char *buf = NULL, rec_type; | |
| 254 if (!debug_fp) return; // no file | |
| 48 | 255 off_t index_pos = ftell(debug_fp); |
| 43 | 256 off_t file_pos = index_pos; |
| 46 | 257 // add 2. One for the pointer to the next index, |
| 258 // one for the count of this index | |
| 259 int index_size = ((curr_items+2) * sizeof(off_t)); | |
| 260 off_t *index; | |
| 261 int index_ptr = 0; | |
| 262 struct pst_debug_file_rec_m mfile_rec; | |
| 263 struct pst_debug_file_rec_l lfile_rec; | |
| 16 | 264 |
| 46 | 265 if (curr_items == 0) return; // no items to write. |
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266 |
| 46 | 267 index = (off_t*)xmalloc(index_size); |
| 268 memset(index, 0, index_size); // valgrind, avoid writing uninitialized data | |
| 269 file_pos += index_size; | |
| 270 // write the index first, we will re-write it later, but | |
| 271 // we want to allocate the space | |
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272 pst_debug_fwrite(index, index_size, 1, debug_fp); |
| 46 | 273 index[index_ptr++] = curr_items; |
| 16 | 274 |
| 46 | 275 item_ptr = item_head; |
| 276 while (item_ptr) { | |
| 277 file_pos = ftell(debug_fp); | |
| 278 index[index_ptr++] = file_pos; | |
| 279 size = strlen(item_ptr->function) + | |
| 280 strlen(item_ptr->file) + | |
| 281 strlen(item_ptr->text) + 3; //for the three \0s | |
| 282 if (buf) free(buf); | |
| 283 buf = xmalloc(size+1); | |
| 284 ptr = 0; | |
| 285 funcname=ptr; | |
| 286 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->function)+1; | |
| 287 filename=ptr; | |
| 288 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->file)+1; | |
| 289 text=ptr; | |
| 290 ptr += sprintf(&(buf[ptr]), "%s", item_ptr->text)+1; | |
| 291 end=ptr; | |
| 292 if (end > USHRT_MAX) { // bigger than can be stored in a short | |
| 293 rec_type = 'L'; | |
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294 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 295 lfile_rec.type = item_ptr->type; |
| 296 lfile_rec.line = item_ptr->line; | |
| 297 lfile_rec.funcname = funcname; | |
| 298 lfile_rec.filename = filename; | |
| 299 lfile_rec.text = text; | |
| 300 lfile_rec.end = end; | |
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301 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 302 } else { |
| 303 rec_type = 'M'; | |
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304 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 305 mfile_rec.type = item_ptr->type; |
| 306 mfile_rec.line = item_ptr->line; | |
| 307 mfile_rec.funcname = funcname; | |
| 308 mfile_rec.filename = filename; | |
| 309 mfile_rec.text = text; | |
| 310 mfile_rec.end = end; | |
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311 pst_debug_fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp); |
| 46 | 312 } |
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313 pst_debug_fwrite(buf, 1, ptr, debug_fp); |
| 46 | 314 if (buf) free(buf); buf = NULL; |
| 315 item_head = item_ptr->next; | |
| 316 free(item_ptr->function); | |
| 317 free(item_ptr->file); | |
| 318 free(item_ptr->text); | |
| 319 free(item_ptr); | |
| 320 item_ptr = item_head; | |
| 321 } | |
| 322 curr_items = 0; | |
| 323 index[index_ptr] = ftell(debug_fp); | |
| 16 | 324 |
| 46 | 325 // we should now have a complete index |
| 326 fseek(debug_fp, index_pos, SEEK_SET); | |
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327 pst_debug_fwrite(index, index_size, 1, debug_fp); |
| 46 | 328 fseek(debug_fp, 0, SEEK_END); |
| 329 item_ptr = item_head = item_tail = NULL; | |
| 330 free(index); | |
| 331 if (buf) free(buf); | |
| 16 | 332 } |
| 333 | |
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334 |
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335 void pst_debug_write_msg(struct pst_debug_item *item, const char *fmt, va_list *ap, int size) { |
| 46 | 336 struct pst_debug_file_rec_l lfile_rec; |
| 337 struct pst_debug_file_rec_m mfile_rec; | |
| 338 unsigned char rec_type; | |
| 339 int index_size = 3 * sizeof(off_t); | |
| 340 off_t index[3]; | |
| 341 off_t index_pos, file_pos; | |
| 342 char zero='\0'; | |
| 343 unsigned int end; | |
| 344 if (!debug_fp) return; // no file | |
| 345 index[0] = 1; //only one item in this index | |
| 346 index_pos = ftell(debug_fp); | |
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347 pst_debug_fwrite(index, index_size, 1, debug_fp); |
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348 |
| 46 | 349 index[1] = ftell(debug_fp); |
| 16 | 350 |
| 46 | 351 if (size > USHRT_MAX) { // bigger than can be stored in a short |
| 352 rec_type = 'L'; | |
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353 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 354 lfile_rec.type = item->type; |
| 355 lfile_rec.line = item->line; | |
| 356 lfile_rec.funcname = 0; | |
| 357 lfile_rec.filename = strlen(item->function)+1; | |
| 358 lfile_rec.text = lfile_rec.filename+strlen(item->file)+1; | |
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359 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 360 } else { |
| 361 rec_type = 'M'; | |
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362 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 363 mfile_rec.type = item->type; |
| 364 mfile_rec.line = item->line; | |
| 365 mfile_rec.funcname = 0; | |
| 366 mfile_rec.filename = strlen(item->function)+1; | |
| 367 mfile_rec.text = mfile_rec.filename+strlen(item->file)+1; | |
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368 pst_debug_fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp); |
| 46 | 369 } |
| 370 file_pos = ftell(debug_fp); | |
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371 pst_debug_fwrite(item->function, strlen(item->function)+1, 1, debug_fp); |
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372 pst_debug_fwrite(item->file, strlen(item->file)+1, 1, debug_fp); |
| 46 | 373 vfprintf(debug_fp, fmt, *ap); |
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374 pst_debug_fwrite(&zero, 1, 1, debug_fp); |
| 16 | 375 |
| 46 | 376 end = ftell(debug_fp)-file_pos; |
| 16 | 377 |
| 46 | 378 index[2] = ftell(debug_fp); |
| 379 fseek(debug_fp, index_pos, SEEK_SET); | |
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380 pst_debug_fwrite(index, index_size, 1, debug_fp); |
| 46 | 381 if (size > USHRT_MAX) { |
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382 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 383 lfile_rec.end = end; |
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384 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 385 } else { |
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386 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 387 mfile_rec.end = end; |
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388 pst_debug_fwrite(&mfile_rec, sizeof(mfile_rec), 1, debug_fp); |
| 46 | 389 } |
| 390 fseek(debug_fp, 0, SEEK_END); | |
| 16 | 391 } |
| 392 | |
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393 |
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394 void pst_debug_write_hex(struct pst_debug_item *item, char *buf, size_t size, int col) { |
| 46 | 395 struct pst_debug_file_rec_l lfile_rec; |
| 396 unsigned char rec_type; | |
| 397 int index_size = 3 * sizeof(off_t); | |
| 398 off_t index_pos, file_pos, index[3]; | |
| 399 char zero='\0'; | |
| 400 if (!debug_fp) return; // no file | |
| 401 index[0] = 1; // only one item in this index run | |
| 402 index[1] = 0; // valgrind, avoid writing uninitialized data | |
| 403 index[2] = 0; // "" | |
| 404 index_pos = ftell(debug_fp); | |
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405 pst_debug_fwrite(index, index_size, 1, debug_fp); |
| 46 | 406 index[1] = ftell(debug_fp); |
| 16 | 407 |
| 46 | 408 // always use the long |
| 409 rec_type = 'L'; | |
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410 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
| 46 | 411 lfile_rec.funcname = 0; |
| 412 lfile_rec.filename = strlen(item->function)+1; | |
| 413 lfile_rec.text = lfile_rec.filename+strlen(item->file)+1; | |
| 414 lfile_rec.end = 0; // valgrind, avoid writing uninitialized data | |
| 415 lfile_rec.line = item->line; | |
| 416 lfile_rec.type = item->type; | |
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417 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 16 | 418 |
| 46 | 419 file_pos = ftell(debug_fp); |
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420 pst_debug_fwrite(item->function, strlen(item->function)+1, 1, debug_fp); |
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421 pst_debug_fwrite(item->file, strlen(item->file)+1, 1, debug_fp); |
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422 |
| 46 | 423 pst_debug_hexdumper(debug_fp, buf, size, col, 0); |
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424 pst_debug_fwrite(&zero, 1, 1, debug_fp); |
| 46 | 425 lfile_rec.end = ftell(debug_fp) - file_pos; |
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426 |
| 46 | 427 index[2] = ftell(debug_fp); |
| 428 fseek(debug_fp, index_pos, SEEK_SET); | |
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429 pst_debug_fwrite(index, index_size, 1, debug_fp); |
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430 pst_debug_fwrite(&rec_type, 1, sizeof(char), debug_fp); |
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431 pst_debug_fwrite(&lfile_rec, sizeof(lfile_rec), 1, debug_fp); |
| 46 | 432 fseek(debug_fp, 0, SEEK_END); |
| 16 | 433 } |
| 434 | |
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435 |
| 36 | 436 void *xmalloc(size_t size) { |
| 46 | 437 void *mem = malloc(size); |
| 438 if (!mem) { | |
| 439 fprintf(stderr, "xMalloc: Out Of memory [req: %ld]\n", (long)size); | |
| 440 exit(1); | |
| 441 } | |
| 442 return mem; | |
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443 } |
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444 |