src/ir.c

   1 /*!@file
   2   \brief   IR Memory Implementation
   3   \details Intermediary memory management
   4   \author  Jordan Lavatai
   5   \date    Aug 2016
   6   ----------------------------------------------------------------------------*/
   7 /* Standard */
   8 #include <stdlib.h> //exit, malloc
   9 #include <stdio.h>  //print
  10 #include <stdarg.h> //va_args
  11 #include <stdint.h> //uint64_t
  12 #include <string.h> //memset, str*
  13 /* Unicode */
  14 #include <unistd.h>   //u8_* functions
  15 #include <unitypes.h> //uint8_t as a char
  16 #include <unistr.h>   //u32_cpy
  17 /* Local */
  18 #include "apc.h"
  19 #include "ir.h"
  20 /* Public */
  21 int      ir_init(void);
  22 void     ir_quit(void);
  23 int      ir_linker(void);
  24 int      ir_condenser(void);
  25 /* Memory allocation structures */
  26 enum dtype { FSDAT, MSDAT, ADAT, LDAT, FBDAT };
  27 struct pagenode_t;
  28 struct pagenode_header_t {
  29   struct pagenode_t* next;
  30   char*              head;
  31 };
  32 struct pagenode_t {
  33   struct pagenode_header_t header;
  34   char                     root[];
  35 };
  36 struct pagelist_t {
  37   struct pagenode_t* root, * head;
  38   size_t             pagesize;
  39 };
  40 struct ir_namelist_t;
  41 struct ir_namelist_t
  42 { struct ir_namelist_t* nextsib;
  43   uint8_t*              name;
  44 };
  45 struct ir_classld_t
  46 { struct ir_class_t*    root_class;
  47   struct ir_namelist_t* namelist, * namelist_head;
  48 };
  49 struct ir_setld_t
  50 { struct ir_classld_t*  classld;
  51   long long             ref;
  52   struct ir_namelist_t* namelist, * namelist_head;
  53 };
  54 /* Set data mem */
  55 struct ir_setdata_header_t
  56 { enum dtype          type;
  57   uint8_t*            src_filename, * data_name;
  58   union ir_setdata_t* nextsib;
  59 };
  60 struct ir_frameinfo_t
  61 { int facing, w, h; };
  62 struct ir_framedata_t
  63 { struct ir_setdata_header_t header;
  64   struct ir_frameinfo_t      frameinfo;
  65 };
  66 struct ir_framebox_t
  67 { struct ir_setdata_header_t header;
  68   struct ir_framedata_t      framesheets[FACING_MAX];
  69   struct ir_framedata_t      mapsheets[FACING_MAX];
  70 };
  71 struct ir_simplex_t { struct ir_setdata_header_t header; };
  72 struct ir_link_t
  73 { struct ir_setdata_header_t header;
  74   struct ir_classld_t*       classld;
  75   struct ir_setld_t*         setld;
  76   enum ltype                 type;
  77 };
  78 union ir_setdata_t
  79 { struct ir_setdata_header_t  header;
  80   struct ir_framebox_t        framebox;
  81   struct ir_framedata_t       framesheet;
  82   struct ir_framedata_t       mapsheet;
  83   struct ir_simplex_t         audio;
  84   struct ir_link_t            link;
  85 };
  86 struct ir_class_t
  87 { struct ir_class_t* nextchild, * nextsib;
  88   struct ir_set_t*   root_set;
  89   uint8_t*           name;
  90 };
  91 struct ir_set_t
  92 { struct ir_set_t*      nextchild, * nextsib;
  93   struct ir_class_t*    class;
  94   long long             ref;
  95   uint8_t*              name;
  96   struct ir_framebox_t* frameboxes;
  97   struct ir_simplex_t*  audio;
  98   struct ir_link_t*     links;
  99 };
 100 /* Functions */
 101 static inline
 102 int                   init_pagelist(struct pagelist_t*,size_t);
 103 static inline
 104 struct ir_framebox_t* ir_set_add_framebox(struct ir_set_t*,const uint8_t*);
 105 static
 106 void                  ir_free_pagenodes(struct pagenode_t*);
 107 static inline
 108 int                   bytes_identical(const uint8_t*,const uint8_t*);
 109 static
 110 void*                 stack_alloc(size_t);
 111 static
 112 uint8_t*              name_alloc(const uint8_t*);
 113 static inline
 114 union ir_setdata_t*   ir_framedata (enum dtype,const uint8_t*,apc_facing,int,int);
 115 /* Function-Like Macros */
 116 #define do_warn() do {                          \
 117   } while (0)
 118 #define wprint(str) do {                        \
 119     fprintf(stderr, str);                       \
 120     do_warn();                                  \
 121   } while (0)
 122 #define wprintf(fmt,...) do {                   \
 123     fprintf(stderr, fmt, __VA_ARGS__);          \
 124     do_warn();                                  \
 125   } while (0)
 126 #define do_error() do {                         \
 127     exit(-1);                                   \
 128   } while (0)
 129 #define eprint(str) do {                        \
 130     fprintf(stderr, str);                       \
 131     do_error();                                 \
 132   } while (0)
 133 #define eprintf(fmt,...) do {                   \
 134     fprintf(stderr, fmt, __VA_ARGS__);          \
 135     do_error();                                 \
 136   } while (0)
 137 #define struct_alloc(_T) ((struct _T*) stack_alloc(sizeof(struct _T)))
 138 #define DATA_PAGESIZE   (sys_pagesize)
 139 #define NAME_PAGESIZE   (APC_NAME_MAX * 1024)
 140 #define PL_HEADERSIZE   (sizeof(struct pagenode_header_t))
 141 #define PL_HEADSIZE(_PL) (_PL.head->header.head - _PL.head->root)
 142 #define PL_HEADMEM(_PL)  (_PL.pagesize - PL_HEADERSIZE - PL_HEADSIZE(_PL))
 143 /* Memory */
 144 extern //apc.c
 145 long sys_pagesize;
 146 static
 147 struct pagelist_t datapages, namepages;
 148 static
 149 struct ir_class_t root_class = { .name = (uint8_t*)"." };
 150
 151 /* Init */
 152 int ir_init
 153 ( void )
 154 { if (init_pagelist(&datapages, (size_t)DATA_PAGESIZE))
 155     eprint("Memory allocation error\n");
 156   if (init_pagelist(&namepages, (size_t)NAME_PAGESIZE))
 157     eprint("Memory allocation error\n");
 158   return 0;
 159 }
 160
 161 static inline
 162 int init_pagelist
 163 ( struct pagelist_t* pl,
 164   size_t size
 165 )
 166 { pl->pagesize = size;
 167   pl->root = (struct pagenode_t*) calloc(size,1);
 168   if (pl->root == NULL)
 169     return -1;
 170   pl->root->header.head = pl->root->root;
 171   pl->head = pl->root;
 172   return 0;
 173 }
 174
 175 /* Quit/Cleanup
 176    Recursively clean pagenode linked list
 177 */
 178 void ir_quit
 179 ( void )
 180 { ir_free_pagenodes(datapages.root);
 181   ir_free_pagenodes(namepages.root);
 182 }
 183
 184 static
 185 void ir_free_pagenodes
 186 ( struct pagenode_t* pagenode )
 187 { if (pagenode->header.next != NULL)
 188     ir_free_pagenodes(pagenode->header.next);
 189   free(pagenode);
 190 }
 191
 192 /* Link
 193 */
 194 int ir_linker
 195 ( void )
 196 { return 0; }
 197
 198 /* Condense
 199 */
 200 int ir_condenser
 201 ( void )
 202 { return 0; }
 203
 204 /* Return a pointer to the root class */
 205 struct ir_class_t* ir_class_root
 206 ( void )
 207 { return &root_class; }
 208
 209 /* Add a subclass to a class
 210    Attempts to create a new subclass in the provided class, returning
 211    the class if it already exists
 212 */
 213 struct ir_class_t* ir_class_addchild
 214 ( struct ir_class_t* class,
 215   const uint8_t*     name
 216 )
 217 { struct ir_class_t* iter;
 218   printf("Class %s, addchild %s\n", class->name, name);
 219   if (class->nextchild == NULL)
 220     goto alloc;
 221   iter = class->nextchild;
 222   if (iter->name == NULL)
 223     eprintf("Null name pointer in class %p\n", iter);
 224   if (name == NULL)
 225     eprintf("Null child added to class %s\n", iter->name);
 226  check:
 227   if (bytes_identical(iter->name, name))
 228     return iter;
 229   if (iter->nextsib != NULL)
 230     { iter = iter->nextsib;
 231       goto check;
 232     }
 233  alloc:
 234   iter = struct_alloc(ir_class_t);
 235   iter->nextsib = class->nextchild;
 236   iter->name = name_alloc(name);
 237   return class->nextchild = iter;
 238 }
 239
 240 /* Add a set to a class
 241    Attempts to create a new root set in the specified class, returning
 242    the set if it already exists
 243 */
 244 struct ir_set_t* ir_class_addset
 245 ( struct ir_class_t* class,
 246   const uint8_t*     name
 247 )
 248 { struct ir_set_t* iter;
 249   printf("Class %s, addset %s\n", class->name, name);
 250   if (class->root_set == NULL)
 251     goto alloc;
 252   iter = class->root_set;
 253   if (iter->name == NULL)
 254     eprintf("Null name pointer in class %p\n", iter);
 255   if (name == NULL)
 256     eprintf("Null set added to class %s\n", iter->name);
 257  check:
 258   if (bytes_identical(iter->name, name))
 259     return iter;
 260   if (iter->nextsib != NULL)
 261     { iter = iter->nextsib;
 262       goto check;
 263     }
 264  alloc:
 265   iter = struct_alloc(ir_set_t);
 266   iter->nextsib = class->root_set;
 267   iter->name = name_alloc(name);
 268   return class->root_set = iter;
 269 }
 270
 271 /* Add a set to a set
 272    Attempts to create a new subset of the specified set, returning the
 273    child if it already exists
 274 */
 275 struct ir_set_t* ir_set_addchild
 276 ( struct ir_set_t* set,
 277   const uint8_t*   name
 278 )
 279 { struct ir_set_t* iter;
 280   printf("Set %s, addchild %s\n", set->name, name);
 281   if (set->nextchild == NULL)
 282     goto alloc;
 283   iter = set->nextchild;
 284   if (iter->name == NULL)
 285     eprintf("Null name pointer in set %p\n", iter);
 286   if (name == NULL)
 287     eprintf("Null child added to set %s\n", iter->name);
 288  check:
 289   if (bytes_identical(iter->name, name))
 290     return iter;
 291   if (iter->nextsib != NULL)
 292     { iter = iter->nextsib;
 293       goto check;
 294     }
 295  alloc:
 296   iter = struct_alloc(ir_set_t);
 297   iter->nextsib = set->nextchild;
 298   iter->name = name_alloc(name);
 299   return set->nextchild = iter;
 300 }
 301
 302 /* Add a framebox to a set
 303    Attempts to create a new framebox of the specified set, returning
 304    the framebox if it already exists
 305 */
 306 static inline
 307 struct ir_framebox_t* ir_set_add_framebox
 308 ( struct ir_set_t* set,
 309   const uint8_t*   name
 310 )
 311 { struct ir_framebox_t* iter;
 312   if (set->frameboxes == NULL)
 313     goto alloc;
 314   iter = set->frameboxes;
 315  check:
 316   if (bytes_identical(iter->header.data_name, name))
 317     return iter;
 318   if (iter->header.nextsib != NULL)
 319     { iter = (struct ir_framebox_t*) iter->header.nextsib;
 320       goto check;
 321     }
 322  alloc:
 323   iter = struct_alloc(ir_framebox_t);
 324   iter->header.nextsib = (union ir_setdata_t*) set->frameboxes;
 325   iter->header.data_name = name_alloc(name);
 326   return set->frameboxes = iter;
 327 }
 328
 329 /* Match two null-terminated bytestrings
 330    Return 1 if the two bytestrings are identical, else 0
 331 */
 332 static inline
 333 int bytes_identical
 334 ( const uint8_t* stra,
 335   const uint8_t* strb
 336 )
 337 { int ca, cb;
 338   do {
 339     ca = *stra++;
 340     cb = *strb++;
 341   } while (ca && ca != '_' && ca == cb);
 342   return (ca == cb);
 343 }
 344
 345 /* Assign Setdata to Set
 346
 347  */
 348 void ir_set_assign_data
 349 ( struct ir_set_t*      set,
 350   union  ir_setdata_t*  setdata
 351 )
 352 { struct ir_framebox_t* framebox;
 353   struct ir_simplex_t*  simplex;
 354   switch (setdata->header.type)
 355     { case FSDAT:
 356         framebox = ir_set_add_framebox(set, setdata->header.data_name);
 357         if (framebox->framesheets[setdata->framesheet.frameinfo.facing].header.data_name != NULL)
 358           wprintf("Duplicate framesheet [%i] %s\n",
 359                   setdata->framesheet.frameinfo.facing, setdata->header.data_name);
 360         framebox->framesheets[setdata->framesheet.frameinfo.facing] = setdata->framesheet;
 361         break;
 362       case MSDAT:
 363         framebox = ir_set_add_framebox(set, setdata->header.data_name);
 364         if (framebox->mapsheets[setdata->mapsheet.frameinfo.facing].header.data_name != NULL)
 365           wprintf("Duplicate mapsheet [%i] %s\n",
 366                   setdata->mapsheet.frameinfo.facing, setdata->header.data_name);
 367         framebox->mapsheets[setdata->mapsheet.frameinfo.facing] = setdata->mapsheet;
 368         break;
 369       case ADAT:
 370         if (set->audio == NULL)
 371           { set->audio = (struct ir_simplex_t*) setdata;
 372             return;
 373           }
 374         simplex = set->audio;
 375         while (simplex->header.nextsib != NULL)
 376           if (bytes_identical(simplex->header.data_name, setdata->header.data_name))
 377             { wprintf("Duplicate audio %s\n", setdata->header.data_name);
 378               *simplex = setdata->audio;
 379               //setdata is now a pointer to redundant, unused memory.
 380               return;
 381             }
 382           else
 383             simplex = (struct ir_simplex_t*) simplex->header.nextsib;
 384         setdata->audio.header.nextsib = (union ir_setdata_t*) set->audio;
 385         set->audio = (struct ir_simplex_t*) setdata;
 386         break;
 387       case LDAT:
 388         setdata->link.header.nextsib = (union ir_setdata_t*) set->links;
 389         set->links = (struct ir_link_t*) setdata;
 390         break;
 391       default:
 392         fprintf(stderr, "Unknown setdata type %x\n", setdata->header.type);
 393         exit(-1);
 394     }
 395 }
 396
 397 void ir_set_assign_ref
 398 ( struct ir_set_t* set,
 399   long long        ref
 400 )
 401 { if (set->ref != 0)
 402     wprintf("Ref override: 0x%lx -> 0x%lx for set %s\n",
 403             (long unsigned) set->ref, (long unsigned) ref, set->name);
 404   set->ref = ref;
 405   //TODO: reflist_add(set);
 406 }
 407
 408 void ir_data_assign_path
 409 ( union ir_setdata_t* setdata,
 410   const uint8_t*      path
 411 )
 412 { if (path == NULL)
 413     eprintf("Null path in data %s\n", setdata->header.data_name);
 414   if (setdata->header.src_filename != NULL)
 415     wprintf("Path override: %s -> %s for setdata %s\n",
 416             setdata->header.src_filename, path, setdata->header.data_name);
 417   setdata->header.src_filename = name_alloc(path);
 418 }
 419
 420 union ir_setdata_t* ir_framesheet
 421 ( const uint8_t* name,
 422   apc_facing     d,
 423   int            width,
 424   int            height
 425 )
 426 { return ir_framedata(FSDAT, name, d, width, height); }
 427
 428 union ir_setdata_t* ir_mapsheet
 429 ( const uint8_t* name,
 430   apc_facing     d,
 431   int            width,
 432   int            height
 433 )
 434 { return ir_framedata(MSDAT, name, d, width, height); }
 435
 436 static inline
 437 union ir_setdata_t* ir_framedata
 438 ( enum dtype     type,
 439   const uint8_t* name,
 440   apc_facing     d,
 441   int            width,
 442   int            height
 443 )
 444 { struct ir_framedata_t* framedata = struct_alloc(ir_framedata_t);
 445   if (name == NULL)
 446     eprint("Null name in set allocation\n");
 447   framedata->header.type = type;
 448   framedata->header.data_name = name_alloc(name);
 449   framedata->frameinfo.facing = d;
 450   framedata->frameinfo.w = width;
 451   framedata->frameinfo.h = height;
 452   return (union ir_setdata_t*) framedata;
 453 }
 454
 455 union ir_setdata_t* ir_audio
 456 ( const uint8_t* name )
 457 { struct ir_simplex_t* audio = struct_alloc(ir_simplex_t);
 458   if (name == NULL)
 459     eprint("Null audio\n");
 460   audio->header.type = ADAT;
 461   audio->header.data_name = name_alloc(name);
 462   return (union ir_setdata_t*) audio;
 463 }
 464
 465
 466 /* Create classld that points to a class */
 467 struct ir_classld_t* ir_classld_from_class
 468 ( struct ir_class_t* class )
 469 { struct ir_classld_t* classld;
 470   if (class == NULL)
 471     eprint("Null class in classld\n");
 472   classld = struct_alloc(ir_classld_t);
 473   classld->root_class = class;
 474   return classld;
 475 }
 476
 477 struct ir_setld_t* ir_setld_from_ref
 478 ( long long ref )
 479 { struct ir_setld_t* setld;
 480   setld = struct_alloc(ir_setld_t);
 481   setld->ref = ref;
 482   return setld;
 483 }
 484
 485 struct ir_setld_t* ir_setld_from_classld
 486 ( struct ir_classld_t* classld,
 487   const uint8_t*       name
 488 )
 489 { struct ir_setld_t* setld;
 490   setld = struct_alloc(ir_setld_t);
 491   setld->namelist = struct_alloc(ir_namelist_t);
 492   setld->namelist_head = setld->namelist;
 493   setld->namelist_head->name = name_alloc(name);
 494   setld->classld = classld;
 495   return setld;
 496 }
 497
 498 struct ir_setld_t* ir_setld_addchild
 499 ( struct ir_setld_t* setld,
 500   const uint8_t*     name
 501 )
 502 { if (setld->namelist == NULL)
 503     { setld->namelist = struct_alloc(ir_namelist_t);
 504       setld->namelist_head = setld->namelist;
 505     }
 506   else
 507     { setld->namelist_head->nextsib = struct_alloc(ir_namelist_t);
 508       setld->namelist_head = setld->namelist_head->nextsib;
 509     }
 510   setld->namelist_head->name = name_alloc(name);
 511   return setld;
 512 }
 513
 514 union ir_setdata_t* ir_link
 515 ( enum ltype         link_type,
 516   struct ir_setld_t* setld,
 517   const uint8_t*     name
 518 )
 519 { struct ir_link_t* link;
 520   link = struct_alloc(ir_link_t);
 521   link->header.type = LDAT;
 522   link->type = link_type;
 523   link->classld = setld->classld;
 524   link->setld = setld;
 525   if (link_type != OLINK && name != NULL)
 526     link->header.data_name = name_alloc(name);
 527   return (union ir_setdata_t*) link;
 528 }
 529
 530
 531 static
 532 void* stack_alloc
 533 ( size_t bytes )
 534 { if (!bytes) //valid behavior to attain current head
 535     return datapages.head->header.head;
 536   if (PL_HEADMEM(datapages) < bytes)
 537     { datapages.head->header.next = (struct pagenode_t*) calloc(datapages.pagesize,1);
 538       if (datapages.head->header.next == NULL)
 539         eprint("Memory allocation error \n");
 540       datapages.head = datapages.head->header.next;
 541       datapages.head->header.head = datapages.head->root;
 542     }
 543   datapages.head->header.head += bytes;
 544   return (void*) datapages.head->header.head - bytes;
 545 }
 546
 547 static
 548 uint8_t* name_alloc
 549 ( const uint8_t* name_src )
 550 { const uint8_t* iter;
 551   uint8_t*       name;
 552   int            head_mem;
 553  copy:
 554   name = (uint8_t*)namepages.head->header.head;
 555   iter = name_src;
 556   for (head_mem = PL_HEADMEM(namepages); *iter && *iter != '_' && head_mem; head_mem--)
 557     *(namepages.head->header.head)++ = *iter++;
 558   if (head_mem == 0) //not enough room
 559     { namepages.head->header.next = (struct pagenode_t*) calloc(namepages.pagesize,1);
 560       if (namepages.head->header.next == NULL)
 561         eprint("Memory allocation error\n");
 562       namepages.head = namepages.head->header.next;
 563       namepages.head->header.head = namepages.head->root;
 564       goto copy;
 565     }
 566   *(namepages.head->header.head)++ = '\0';
 567   return name;
 568 }