vm/objects.hpp

   1 namespace factor
   2 {
   3
   4 static const cell special_object_count = 70;
   5
   6 enum special_object {
   7         OBJ_NAMESTACK,            /* used by library only */
   8         OBJ_CATCHSTACK,           /* used by library only, per-callback */
   9
  10         OBJ_CURRENT_CALLBACK = 2, /* used by library only, per-callback */
  11         OBJ_WALKER_HOOK,          /* non-local exit hook, used by library only */
  12         OBJ_CALLCC_1,             /* used to pass the value in callcc1 */
  13
  14         OBJ_BREAK            = 5, /* quotation called by throw primitive */
  15         OBJ_ERROR,                /* a marker consed onto kernel errors */
  16
  17         OBJ_CELL_SIZE        = 7, /* sizeof(cell) */
  18         OBJ_CPU,                  /* CPU architecture */
  19         OBJ_OS,                   /* operating system name */
  20
  21         OBJ_ARGS            = 10, /* command line arguments */
  22         OBJ_STDIN,                /* stdin FILE* handle */
  23         OBJ_STDOUT,               /* stdout FILE* handle */
  24
  25         OBJ_IMAGE           = 13, /* image path name */
  26         OBJ_EXECUTABLE,           /* runtime executable path name */
  27
  28         OBJ_EMBEDDED        = 15, /* are we embedded in another app? */
  29         OBJ_EVAL_CALLBACK,        /* used when Factor is embedded in a C app */
  30         OBJ_YIELD_CALLBACK,       /* used when Factor is embedded in a C app */
  31         OBJ_SLEEP_CALLBACK,       /* used when Factor is embedded in a C app */
  32
  33         OBJ_COCOA_EXCEPTION = 19, /* Cocoa exception handler quotation */
  34
  35         OBJ_BOOT            = 20, /* boot quotation */
  36         OBJ_GLOBAL,               /* global namespace */
  37
  38         /* Quotation compilation in quotations.c */
  39         JIT_PROLOG          = 23,
  40         JIT_PRIMITIVE_WORD,
  41         JIT_PRIMITIVE,
  42         JIT_WORD_JUMP,
  43         JIT_WORD_CALL,
  44         JIT_WORD_SPECIAL,
  45         JIT_IF_WORD,
  46         JIT_IF,
  47         JIT_EPILOG,
  48         JIT_RETURN,
  49         JIT_PROFILING,
  50         JIT_PUSH_IMMEDIATE,
  51         JIT_DIP_WORD,
  52         JIT_DIP,
  53         JIT_2DIP_WORD,
  54         JIT_2DIP,
  55         JIT_3DIP_WORD,
  56         JIT_3DIP,
  57         JIT_EXECUTE_WORD,
  58         JIT_EXECUTE_JUMP,
  59         JIT_EXECUTE_CALL,
  60         JIT_DECLARE_WORD,
  61
  62         /* Callback stub generation in callbacks.c */
  63         CALLBACK_STUB       = 45,
  64
  65         /* Incremented on every modify-code-heap call; invalidates call( inline
  66         caching */
  67         REDEFINITION_COUNTER = 46,
  68
  69         /* Polymorphic inline cache generation in inline_cache.c */
  70         PIC_LOAD            = 47,
  71         PIC_TAG,
  72         PIC_TUPLE,
  73         PIC_CHECK_TAG,
  74         PIC_CHECK_TUPLE,
  75         PIC_HIT,
  76         PIC_MISS_WORD,
  77         PIC_MISS_TAIL_WORD,
  78
  79         /* Megamorphic cache generation in dispatch.c */
  80         MEGA_LOOKUP         = 57,
  81         MEGA_LOOKUP_WORD,
  82         MEGA_MISS_WORD,
  83
  84         OBJ_UNDEFINED       = 60, /* default quotation for undefined words */
  85
  86         OBJ_STDERR          = 61, /* stderr FILE* handle */
  87
  88         OBJ_STAGE2          = 62, /* have we bootstrapped? */
  89
  90         OBJ_CURRENT_THREAD  = 63,
  91
  92         OBJ_THREADS         = 64,
  93         OBJ_RUN_QUEUE       = 65,
  94         OBJ_SLEEP_QUEUE     = 66,
  95 };
  96
  97 #define OBJ_FIRST_SAVE OBJ_BOOT
  98 #define OBJ_LAST_SAVE OBJ_STAGE2
  99
 100 inline static bool save_env_p(cell i)
 101 {
 102         return (i >= OBJ_FIRST_SAVE && i <= OBJ_LAST_SAVE);
 103 }
 104
 105 template<typename Iterator> void object::each_slot(Iterator &iter)
 106 {
 107         cell scan = (cell)this;
 108         cell payload_start = binary_payload_start();
 109         cell end = scan + payload_start;
 110
 111         scan += sizeof(cell);
 112
 113         while(scan < end)
 114         {
 115                 iter((cell *)scan);
 116                 scan += sizeof(cell);
 117         }
 118 }
 119
 120 }