summaryrefslogtreecommitdiff
path: root/yarvcore.h
blob: 85842a00a4ead4c375bc71e6c292be3b968a7d44 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
/**********************************************************************

  yarvcore.h - 

  $Author$
  $Date$
  created at: 04/01/01 19:41:38 JST

  Copyright (C) 2004-2006 Koichi Sasada

**********************************************************************/

#ifndef _YARVCORE_H_INCLUDED_
#define _YARVCORE_H_INCLUDED_

#define RUBY_VM_THREAD_MODEL 2

#include <setjmp.h>

#include "ruby/ruby.h"
#include "ruby/signal.h"
#include "ruby/st.h"
#include "ruby/node.h"

#include "debug.h"
#include "vm_opts.h"

#if   defined(_WIN32)
#include "thread_win32.h"
#elif defined(HAVE_PTHREAD_H)
#include "thread_pthread.h"
#else
#error "unsupported thread type"
#endif

#include <signal.h>

#ifndef NSIG
# ifdef DJGPP
#  define NSIG SIGMAX
# else
#  define NSIG (_SIGMAX + 1)      /* For QNX */
# endif
#endif

#define RUBY_NSIG NSIG

/*****************/
/* configuration */
/*****************/

/* gcc ver. check */
#if defined(__GNUC__) && __GNUC__ >= 2

#if OPT_TOKEN_THREADED_CODE
#if OPT_DIRECT_THREADED_CODE
#undef OPT_DIRECT_THREADED_CODE
#endif
#endif

#else /* defined(__GNUC__) && __GNUC__ >= 2 */

/* disable threaded code options */
#if OPT_DIRECT_THREADED_CODE
#undef OPT_DIRECT_THREADED_CODE
#endif
#if OPT_TOKEN_THREADED_CODE
#undef OPT_TOKEN_THREADED_CODE
#endif
#endif

/* call threaded code */
#if    OPT_CALL_THREADED_CODE
#if    OPT_DIRECT_THREADED_CODE
#undef OPT_DIRECT_THREADED_CODE
#endif /* OPT_DIRECT_THREADED_CODE */
#if    OPT_STACK_CACHING
#undef OPT_STACK_CACHING
#endif /* OPT_STACK_CACHING */
#define YARV_AOT_COMPILED 1
#endif /* OPT_CALL_THREADED_CODE */

/* likely */
#if __GNUC__ >= 3
#define LIKELY(x)   (__builtin_expect((x), 1))
#define UNLIKELY(x) (__builtin_expect((x), 0))
#else /* __GNUC__ >= 3 */
#define LIKELY(x)   (x)
#define UNLIKELY(x) (x)
#endif /* __GNUC__ >= 3 */

#define YARVDEBUG 0
#define CPDEBUG   0
#define VMDEBUG   0
#define GCDEBUG   0


/* classes and modules */

extern VALUE symIFUNC;
extern VALUE symCFUNC;

/* special id */
extern ID idPLUS;
extern ID idMINUS;
extern ID idMULT;
extern ID idDIV;
extern ID idMOD;
extern ID idLT;
extern ID idLTLT;
extern ID idLE;
extern ID idGT;
extern ID idGE;
extern ID idEq;
extern ID idEqq;
extern ID idBackquote;
extern ID idEqTilde;
extern ID idThrowState;
extern ID idAREF;
extern ID idASET;
extern ID idIntern;
extern ID idMethodMissing;
extern ID idLength;
extern ID idGets;
extern ID idSucc;
extern ID idEach;
extern ID idLambda;
extern ID idRangeEachLT;
extern ID idRangeEachLE;
extern ID idArrayEach;
extern ID idTimes;
extern ID idEnd;
extern ID idBitblt;
extern ID idAnswer;
extern ID idSvarPlaceholder;
extern ID idSend;
extern ID id__send__;
extern ID id__send;
extern ID idFuncall;
extern ID id__send_bang;


struct insn_info_struct {
    unsigned short position;
    unsigned short line_no;
};

#define ISEQ_TYPE_TOP    INT2FIX(1)
#define ISEQ_TYPE_METHOD INT2FIX(2)
#define ISEQ_TYPE_BLOCK  INT2FIX(3)
#define ISEQ_TYPE_CLASS  INT2FIX(4)
#define ISEQ_TYPE_RESCUE INT2FIX(5)
#define ISEQ_TYPE_ENSURE INT2FIX(6)
#define ISEQ_TYPE_EVAL   INT2FIX(7)
#define ISEQ_TYPE_DEFINED_GUARD INT2FIX(8)

#define CATCH_TYPE_RESCUE INT2FIX(1)
#define CATCH_TYPE_ENSURE INT2FIX(2)
#define CATCH_TYPE_RETRY  INT2FIX(3)
#define CATCH_TYPE_BREAK  INT2FIX(4)
#define CATCH_TYPE_REDO   INT2FIX(5)
#define CATCH_TYPE_NEXT   INT2FIX(6)

struct catch_table_entry {
    VALUE type;
    VALUE iseq;
    unsigned long start;
    unsigned long end;
    unsigned long cont;
    unsigned long sp;
};

#define INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE (512)

struct iseq_compile_data_storage {
    struct iseq_compile_data_storage *next;
    unsigned long pos;
    unsigned long size;
    char *buff;
};

struct iseq_compile_data_ensure_node_stack;

typedef struct rb_compile_option_struct {
    int inline_const_cache;
    int peephole_optimization;
    int tailcall_optimization;
    int specialized_instruction;
    int operands_unification;
    int instructions_unification;
    int stack_caching;
    int trace_instruction;
} rb_compile_option_t;

struct iseq_compile_data {
    /* GC is needed */
    VALUE err_info;
    VALUE mark_ary;
    VALUE catch_table_ary;	/* Array */

    /* GC is not needed */
    struct iseq_label_data *start_label;
    struct iseq_label_data *end_label;
    struct iseq_label_data *redo_label;
    VALUE current_block;
    VALUE loopval_popped;	/* used by NODE_BREAK */
    VALUE ensure_node;
    VALUE for_iseq;
    struct iseq_compile_data_ensure_node_stack *ensure_node_stack;
    int cached_const;
    struct iseq_compile_data_storage *storage_head;
    struct iseq_compile_data_storage *storage_current;
    int last_line;
    const rb_compile_option_t *option;
};

#if 1
#define GetCoreDataFromValue(obj, type, ptr) do { \
    ptr = (type*)DATA_PTR(obj); \
} while (0)
#else
#define GetCoreDataFromValue(obj, type, ptr) Data_Get_Struct(obj, type, ptr)
#endif

#define GetISeqPtr(obj, ptr) \
  GetCoreDataFromValue(obj, rb_iseq_t, ptr)

typedef struct rb_iseq_profile_struct {
    VALUE count;
    VALUE time_self;
    VALUE time_cumu; /* cumulative */
} rb_iseq_profile_t;

struct rb_iseq_struct;

struct rb_iseq_struct {
    /* instruction sequence type */
    VALUE type;

    VALUE self;
    VALUE name;			/* String: iseq name */
    VALUE *iseq;		/* iseq */
    VALUE *iseq_encoded;
    VALUE iseq_mark_ary;	/* Array: includes operands which should be GC marked */

    /* sequence size */
    unsigned long size;

    /* insn info, must be freed */
    struct insn_info_struct *insn_info_tbl;

    /* insn info size, this value shows also instruction count */
    unsigned int insn_info_size;

    /* file information where this sequence from */
    VALUE filename;

    ID *local_table;		/* must free */
    int local_table_size;

    /* method, class frame: sizeof(vars) + 1, block frame: sizeof(vars) */
    int local_size;

    /* jit compiled or not */
    void *jit_compiled;
    void *iseq_orig;

    /**
     * argument information
     *
     *  def m(a1, a2, ..., aM, b1=(...), b2=(...), ..., bN=(...), *c, &d)
     * =>
     *
     *  argc          = M
     *  arg_rest      = M+N + 1 // if no rest arguments, rest is 0
     *  arg_opts      = N
     *  arg_opts_tbl  = [ (N entries) ]
     *  arg_block     = M+N + 1 (rest) + 1 (block)
     *  check:
     *    M <= num
     */

    int argc;
    int arg_simple;
    int arg_rest;
    int arg_block;
    int arg_opts;
    int arg_post_len;
    int arg_post_start;
    int arg_size;

    VALUE *arg_opt_tbl;

    /* for stack overflow check */
    int stack_max;

    /* klass/module nest information stack (cref) */
    NODE *cref_stack;
    VALUE klass;

    /* catch table */
    struct catch_table_entry *catch_table;
    int catch_table_size;

    /* for child iseq */
    struct rb_iseq_struct *parent_iseq;
    struct rb_iseq_struct *local_iseq;

    /* block inlining */
    NODE *node;
    void *special_block_builder;
    void *cached_special_block_builder;
    VALUE cached_special_block;

    /* misc */
    ID defined_method_id;	/* for define_method */
    rb_iseq_profile_t profile;

    struct iseq_compile_data *compile_data;
};

typedef struct rb_iseq_struct rb_iseq_t;

#define RUBY_EVENT_NONE     0x00
#define RUBY_EVENT_LINE     0x01
#define RUBY_EVENT_CLASS    0x02
#define RUBY_EVENT_END      0x04
#define RUBY_EVENT_CALL     0x08
#define RUBY_EVENT_RETURN   0x10
#define RUBY_EVENT_C_CALL   0x20
#define RUBY_EVENT_C_RETURN 0x40
#define RUBY_EVENT_RAISE    0x80
#define RUBY_EVENT_ALL      0xff
#define RUBY_EVENT_VM      0x100
#define RUBY_EVENT_SWITCH  0x200

typedef unsigned int rb_event_flag_t;
typedef void (*rb_event_hook_func_t)(rb_event_flag_t, VALUE data, VALUE, ID, VALUE klass);

typedef struct rb_event_hook_struct {
    rb_event_flag_t flag;
    rb_event_hook_func_t func;
    VALUE data;
    struct rb_event_hook_struct *next;
} rb_event_hook_t;


#define GetVMPtr(obj, ptr) \
  GetCoreDataFromValue(obj, rb_vm_t, ptr)

typedef struct rb_vm_struct {
    VALUE self;

    rb_thread_lock_t global_interpreter_lock;

    struct rb_thread_struct *main_thread;
    struct rb_thread_struct *running_thread;

    st_table *living_threads;
    VALUE thgroup_default;
    VALUE last_status; /* $? */

    int thread_abort_on_exception;
    unsigned long trace_flag;

    /* object management */
    VALUE mark_object_ary;

    /* load */
    VALUE loaded_features;
    struct st_table *loading_table;
    
    /* signal */
    rb_atomic_t signal_buff[RUBY_NSIG];
    rb_atomic_t bufferd_signal_size;

    /* hook */
    rb_event_hook_t *event_hooks;
} rb_vm_t;

typedef struct {
    VALUE *pc;			/* cfp[0] */
    VALUE *sp;			/* cfp[1] */
    VALUE *bp;			/* cfp[2] */
    rb_iseq_t *iseq;		/* cfp[3] */
    VALUE magic;		/* cfp[4] */
    VALUE self;			/* cfp[5] / block[0] */
    VALUE *lfp;			/* cfp[6] / block[1] */
    VALUE *dfp;			/* cfp[7] / block[2] */
    rb_iseq_t *block_iseq;	/* cfp[8] / block[3] */
    VALUE proc;			/* cfp[9] / block[4] */
    ID method_id;               /* cfp[10] saved in special case */
    VALUE method_klass;         /* cfp[11] saved in special case */
    VALUE prof_time_self;       /* cfp[12] */
    VALUE prof_time_chld;       /* cfp[13] */
} rb_control_frame_t;

typedef struct {
    VALUE self;			/* share with method frame if it's only block */
    VALUE *lfp;			/* share with method frame if it's only block */
    VALUE *dfp;			/* share with method frame if it's only block */
    rb_iseq_t *iseq;
    VALUE proc;
} rb_block_t;

#define GetThreadPtr(obj, ptr) \
  GetCoreDataFromValue(obj, rb_thread_t, ptr)

enum rb_thread_status {
    THREAD_TO_KILL,
    THREAD_RUNNABLE,
    THREAD_STOPPED,
    THREAD_KILLED,
};

typedef jmp_buf rb_jmpbuf_t;

struct rb_vm_tag {
    rb_jmpbuf_t buf;
    VALUE tag;
    VALUE retval;
    struct rb_vm_tag *prev;
};

struct rb_vm_trap_tag {
    struct rb_vm_trap_tag *prev;
};

#define RUBY_VM_VALUE_CACHE_SIZE 0x1000
#define USE_VALUE_CACHE 0

struct rb_thread_struct
{
    VALUE self;
    rb_vm_t *vm;

    /* execution information */
    VALUE *stack;		/* must free, must mark */
    unsigned long stack_size;
    rb_control_frame_t *cfp;
    int safe_level;
    int raised_flag;
    
    /* passing state */
    int state;

    /* for rb_iterate */
    rb_block_t *passed_block;

    /* for load(true) */
    VALUE top_self;
    VALUE top_wrapper;

    /* eval env */
    rb_block_t *base_block;

    VALUE *local_lfp;
    VALUE local_svar;

    /* thread control */
    rb_thread_id_t thread_id;
    enum rb_thread_status status;
    int priority;

    native_thread_data_t native_thread_data;

    VALUE thgroup;
    VALUE value;

    VALUE errinfo;
    VALUE thrown_errinfo;
    int exec_signal;

    int interrupt_flag;
    rb_unblock_function_t *unblock_function;
    rb_thread_lock_t interrupt_lock;

    struct rb_vm_tag *tag;
    struct rb_vm_trap_tag *trap_tag;

    int parse_in_eval;

    /* storage */
    st_table *local_storage;
#if USE_VALUE_CACHE
    VALUE value_cache[RUBY_VM_VALUE_CACHE_SIZE + 1];
    VALUE *value_cache_ptr;
#endif

    struct rb_thread_struct *join_list_next;
    struct rb_thread_struct *join_list_head;

    VALUE first_proc;
    VALUE first_args;
    VALUE (*first_func)(ANYARGS);
    void *first_func_arg;

    /* for GC */
    VALUE *machine_stack_start;
    VALUE *machine_stack_end;
#ifdef __ia64
    VALUE *machine_register_stack_start;
    VALUE *machine_register_stack_end;
#endif
    jmp_buf machine_regs;
    int mark_stack_len;

    /* statistics data for profiler */
    VALUE stat_insn_usage;

    /* tracer */
    rb_event_hook_t *event_hooks;
    rb_event_flag_t event_flags;
    int tracing;

    /* fiber */
    VALUE fiber;
    VALUE root_fiber;
    rb_jmpbuf_t root_jmpbuf;

    /* misc */
    int method_missing_reason;
    int abort_on_exception;
};

/** node -> yarv instruction sequence object */
VALUE rb_iseq_compile(VALUE self, NODE *node);
VALUE rb_iseq_new(NODE*, VALUE, VALUE, VALUE, VALUE);
VALUE rb_iseq_new_with_bopt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE rb_iseq_new_with_opt(NODE*, VALUE, VALUE, VALUE, VALUE, const rb_compile_option_t*);

/** disassemble instruction sequence */
VALUE ruby_iseq_disasm(VALUE self);
VALUE ruby_iseq_disasm_insn(VALUE str, VALUE *iseqval, int pos,
			    rb_iseq_t *iseq, VALUE child);
char *ruby_node_name(int node);


/* each thread has this size stack : 2MB */
#define RUBY_VM_THREAD_STACK_SIZE (128 * 1024)


/* from ruby 1.9 variable.c */
struct global_entry {
    struct global_variable *var;
    ID id;
};

#define GetProcPtr(obj, ptr) \
  GetCoreDataFromValue(obj, rb_proc_t, ptr)

typedef struct {
    rb_block_t block;

    VALUE envval;		/* for GC mark */
    VALUE blockprocval;
    int safe_level;
    int is_lambda;

    NODE *special_cref_stack;
} rb_proc_t;

#define GetEnvPtr(obj, ptr) \
  GetCoreDataFromValue(obj, rb_env_t, ptr)

typedef struct {
    VALUE *env;
    int env_size;
    int local_size;
    VALUE prev_envval;		/* for GC mark */
    rb_block_t block;
} rb_env_t;

#define GetBindingPtr(obj, ptr) \
  GetCoreDataFromValue(obj, rb_binding_t, ptr)

typedef struct {
    VALUE env;
    NODE *cref_stack;
} rb_binding_t;


/* used by compile time and send insn */
#define VM_CALL_ARGS_SPLAT_BIT     (0x01 << 1)
#define VM_CALL_ARGS_BLOCKARG_BIT  (0x01 << 2)
#define VM_CALL_FCALL_BIT          (0x01 << 3)
#define VM_CALL_VCALL_BIT          (0x01 << 4)
#define VM_CALL_TAILCALL_BIT       (0x01 << 5)
#define VM_CALL_TAILRECURSION_BIT  (0x01 << 6)
#define VM_CALL_SUPER_BIT          (0x01 << 7)
#define VM_CALL_SEND_BIT           (0x01 << 8)

/* inline (method|const) cache */
#define NEW_INLINE_CACHE_ENTRY() NEW_WHILE(Qundef, 0, 0)
#define ic_klass  u1.value
#define ic_method u2.node
#define ic_value  u2.value
#define ic_vmstat u3.cnt
typedef NODE *IC;

void rb_vm_change_state(void);

typedef VALUE CDHASH;



#define GC_GUARDED_PTR(p)     ((VALUE)((VALUE)(p) | 0x01))
#define GC_GUARDED_PTR_REF(p) ((void *)(((VALUE)p) & ~0x03))
#define GC_GUARDED_PTR_P(p)   (((VALUE)p) & 0x01)

#define RUBY_VM_METHOD_NODE NODE_METHOD

#define RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp) (cfp+1)
#define RUBY_VM_NEXT_CONTROL_FRAME(cfp) (cfp-1)
#define RUBY_VM_END_CONTROL_FRAME(th) \
  ((rb_control_frame_t *)((th)->stack + (th)->stack_size))
#define RUBY_VM_VALID_CONTROL_FRAME_P(cfp, ecfp) \
  ((void *)(ecfp) > (void *)(cfp))
#define RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp) \
  (!RUBY_VM_VALID_CONTROL_FRAME_P((cfp), RUBY_VM_END_CONTROL_FRAME(th)))

#define RUBY_VM_IFUNC_P(ptr)        (BUILTIN_TYPE(ptr) == T_NODE)
#define RUBY_VM_NORMAL_ISEQ_P(ptr) \
  (ptr && !RUBY_VM_IFUNC_P(ptr))

#define RUBY_VM_CLASS_SPECIAL_P(ptr) (((VALUE)(ptr)) & 0x02)

#define RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp) ((rb_block_t *)(&(cfp)->self))
#define RUBY_VM_GET_CFP_FROM_BLOCK_PTR(b) \
  ((rb_control_frame_t *)((VALUE *)(b) - 5))


/* defined? */
#define DEFINED_IVAR   INT2FIX(1)
#define DEFINED_IVAR2  INT2FIX(2)
#define DEFINED_GVAR   INT2FIX(3)
#define DEFINED_CVAR   INT2FIX(4)
#define DEFINED_CONST  INT2FIX(5)
#define DEFINED_METHOD INT2FIX(6)
#define DEFINED_YIELD  INT2FIX(7)
#define DEFINED_REF    INT2FIX(8)
#define DEFINED_ZSUPER INT2FIX(9)
#define DEFINED_FUNC   INT2FIX(10)


/* VM related object allocate functions */
/* TODO: should be static functions */
VALUE rb_thread_alloc(VALUE klass);
VALUE rb_proc_alloc(void);

/* for debug */
extern void vm_stack_dump_raw(rb_thread_t *, rb_control_frame_t *);
#define SDR() vm_stack_dump_raw(GET_THREAD(), GET_THREAD()->cfp)
#define SDR2(cfp) vm_stack_dump_raw(GET_THREAD(), (cfp))
void yarv_bug(void);


/* functions about thread/vm execution */

VALUE rb_thread_eval(rb_thread_t *th, VALUE iseqval);
void rb_enable_interrupt(void);
void rb_disable_interrupt(void);
int rb_thread_method_id_and_klass(rb_thread_t *th, ID *idp, VALUE *klassp);

VALUE vm_eval_body(rb_thread_t *th);
VALUE vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self, int argc, VALUE *argv);
VALUE vm_make_proc(rb_thread_t *th, rb_control_frame_t *cfp, rb_block_t *block);
VALUE vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp);
VALUE vm_backtrace(rb_thread_t *, int);

VALUE vm_yield(rb_thread_t *th, int argc, VALUE *argv);
VALUE vm_call0(rb_thread_t *th, VALUE klass, VALUE recv,
	       VALUE id, ID oid, int argc, const VALUE *argv,
	       NODE * body, int nosuper);

int vm_get_sourceline(rb_control_frame_t *);

VALUE yarvcore_eval_parsed(NODE *node, VALUE file);
VALUE yarvcore_eval(VALUE self, VALUE str, VALUE file, VALUE line);

/* for thread */

#if RUBY_VM_THREAD_MODEL == 2
extern rb_thread_t *ruby_current_thread;
extern rb_vm_t *ruby_current_vm;

#define GET_VM() ruby_current_vm
#define GET_THREAD() ruby_current_thread
#define rb_thread_set_current_raw(th) (ruby_current_thread = th)
#define rb_thread_set_current(th) do { \
    rb_thread_set_current_raw(th); \
    th->vm->running_thread = th; \
} while (0)

#else
#error "unsupported thread model"
#endif

void rb_thread_execute_interrupts(rb_thread_t *);

#define RUBY_VM_CHECK_INTS_TH(th) do { \
  if(th->interrupt_flag){ \
    /* TODO: trap something event */ \
    rb_thread_execute_interrupts(th); \
  } \
} while (0)

#define RUBY_VM_CHECK_INTS() \
  RUBY_VM_CHECK_INTS_TH(GET_THREAD())

#endif /* _YARVCORE_H_INCLUDED_ */