Ruby  2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)
vm_trace.c
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1 /**********************************************************************
2 
3  vm_trace.c -
4 
5  $Author: ko1 $
6  created at: Tue Aug 14 19:37:09 2012
7 
8  Copyright (C) 1993-2012 Yukihiro Matsumoto
9 
10 **********************************************************************/
11 
12 /*
13  * This file include two parts:
14  *
15  * (1) set_trace_func internal mechanisms
16  * and C level API
17  *
18  * (2) Ruby level API
19  * (2-1) set_trace_func API
20  * (2-2) TracePoint API (not yet)
21  *
22  */
23 
24 #include "internal.h"
25 #include "ruby/debug.h"
26 
27 #include "vm_core.h"
28 #include "mjit.h"
29 #include "iseq.h"
30 #include "eval_intern.h"
31 #include "builtin.h"
32 
33 /* (1) trace mechanisms */
34 
35 typedef struct rb_event_hook_struct {
39  VALUE data;
40  struct rb_event_hook_struct *next;
41 
42  struct {
43  rb_thread_t *th;
44  unsigned int target_line;
45  } filter;
47 
49 
50 #define MAX_EVENT_NUM 32
51 
52 void
54 {
55  rb_event_hook_t *hook = hooks->hooks;
56 
57  while (hook) {
58  rb_gc_mark(hook->data);
59  hook = hook->next;
60  }
61 }
62 
63 static void clean_hooks(const rb_execution_context_t *ec, rb_hook_list_t *list);
64 
65 void
67 {
68  clean_hooks(GET_EC(), hooks);
69 }
70 
71 /* ruby_vm_event_flags management */
72 
73 static void
74 update_global_event_hook(rb_event_flag_t vm_events)
75 {
76  rb_event_flag_t new_iseq_events = vm_events & ISEQ_TRACE_EVENTS;
78 
79  if (new_iseq_events & ~enabled_iseq_events) {
80  /* Stop calling all JIT-ed code. Compiling trace insns is not supported for now. */
81 #if USE_MJIT
83 #endif
84 
85  /* write all ISeqs iff new events are added */
86  rb_iseq_trace_set_all(new_iseq_events | enabled_iseq_events);
87  }
88 
89  ruby_vm_event_flags = vm_events;
91  rb_objspace_set_event_hook(vm_events);
92 }
93 
94 /* add/remove hooks */
95 
96 static rb_event_hook_t *
97 alloc_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data, rb_event_hook_flag_t hook_flags)
98 {
99  rb_event_hook_t *hook;
100 
101  if ((events & RUBY_INTERNAL_EVENT_MASK) && (events & ~RUBY_INTERNAL_EVENT_MASK)) {
102  rb_raise(rb_eTypeError, "Can not specify normal event and internal event simultaneously.");
103  }
104 
105  hook = ALLOC(rb_event_hook_t);
106  hook->hook_flags = hook_flags;
107  hook->events = events;
108  hook->func = func;
109  hook->data = data;
110 
111  /* no filters */
112  hook->filter.th = NULL;
113  hook->filter.target_line = 0;
114 
115  return hook;
116 }
117 
118 static void
119 hook_list_connect(VALUE list_owner, rb_hook_list_t *list, rb_event_hook_t *hook, int global_p)
120 {
121  hook->next = list->hooks;
122  list->hooks = hook;
123  list->events |= hook->events;
124 
125  if (global_p) {
126  /* global hooks are root objects at GC mark. */
127  update_global_event_hook(list->events);
128  }
129  else {
130  RB_OBJ_WRITTEN(list_owner, Qundef, hook->data);
131  }
132 }
133 
134 static void
135 connect_event_hook(const rb_execution_context_t *ec, rb_event_hook_t *hook)
136 {
137  rb_hook_list_t *list = rb_vm_global_hooks(ec);
138  hook_list_connect(Qundef, list, hook, TRUE);
139 }
140 
141 static void
142 rb_threadptr_add_event_hook(const rb_execution_context_t *ec, rb_thread_t *th,
143  rb_event_hook_func_t func, rb_event_flag_t events, VALUE data, rb_event_hook_flag_t hook_flags)
144 {
145  rb_event_hook_t *hook = alloc_event_hook(func, events, data, hook_flags);
146  hook->filter.th = th;
147  connect_event_hook(ec, hook);
148 }
149 
150 void
152 {
153  rb_threadptr_add_event_hook(GET_EC(), rb_thread_ptr(thval), func, events, data, RUBY_EVENT_HOOK_FLAG_SAFE);
154 }
155 
156 void
158 {
159  rb_event_hook_t *hook = alloc_event_hook(func, events, data, RUBY_EVENT_HOOK_FLAG_SAFE);
160  connect_event_hook(GET_EC(), hook);
161 }
162 
163 void
165 {
166  rb_threadptr_add_event_hook(GET_EC(), rb_thread_ptr(thval), func, events, data, hook_flags);
167 }
168 
169 void
171 {
172  rb_event_hook_t *hook = alloc_event_hook(func, events, data, hook_flags);
173  connect_event_hook(GET_EC(), hook);
174 }
175 
176 static void
177 clean_hooks(const rb_execution_context_t *ec, rb_hook_list_t *list)
178 {
179  rb_event_hook_t *hook, **nextp = &list->hooks;
180  VM_ASSERT(list->need_clean == TRUE);
181 
182  list->events = 0;
183  list->need_clean = FALSE;
184 
185  while ((hook = *nextp) != 0) {
187  *nextp = hook->next;
188  xfree(hook);
189  }
190  else {
191  list->events |= hook->events; /* update active events */
192  nextp = &hook->next;
193  }
194  }
195 
196  if (list == rb_vm_global_hooks(ec)) {
197  /* global events */
198  update_global_event_hook(list->events);
199  }
200  else {
201  /* local events */
202  }
203 }
204 
205 static void
206 clean_hooks_check(const rb_execution_context_t *ec, rb_hook_list_t *list)
207 {
208  if (UNLIKELY(list->need_clean != FALSE)) {
209  if (list->running == 0) {
210  clean_hooks(ec, list);
211  }
212  }
213 }
214 
215 #define MATCH_ANY_FILTER_TH ((rb_thread_t *)1)
216 
217 /* if func is 0, then clear all funcs */
218 static int
219 remove_event_hook(const rb_execution_context_t *ec, const rb_thread_t *filter_th, rb_event_hook_func_t func, VALUE data)
220 {
221  rb_vm_t *vm = rb_ec_vm_ptr(ec);
223  int ret = 0;
224  rb_event_hook_t *hook = list->hooks;
225 
226  while (hook) {
227  if (func == 0 || hook->func == func) {
228  if (hook->filter.th == filter_th || filter_th == MATCH_ANY_FILTER_TH) {
229  if (data == Qundef || hook->data == data) {
231  ret+=1;
232  list->need_clean = TRUE;
233  }
234  }
235  }
236  hook = hook->next;
237  }
238 
239  clean_hooks_check(ec, list);
240  return ret;
241 }
242 
243 static int
244 rb_threadptr_remove_event_hook(const rb_execution_context_t *ec, const rb_thread_t *filter_th, rb_event_hook_func_t func, VALUE data)
245 {
246  return remove_event_hook(ec, filter_th, func, data);
247 }
248 
249 int
251 {
252  return rb_threadptr_remove_event_hook(GET_EC(), rb_thread_ptr(thval), func, Qundef);
253 }
254 
255 int
257 {
258  return rb_threadptr_remove_event_hook(GET_EC(), rb_thread_ptr(thval), func, data);
259 }
260 
261 int
263 {
264  return remove_event_hook(GET_EC(), NULL, func, Qundef);
265 }
266 
267 int
269 {
270  return remove_event_hook(GET_EC(), NULL, func, data);
271 }
272 
273 void
275 {
276  rb_threadptr_remove_event_hook(ec, rb_ec_thread_ptr(ec), 0, Qundef);
277 }
278 
279 /* invoke hooks */
280 
281 static void
282 exec_hooks_body(const rb_execution_context_t *ec, rb_hook_list_t *list, const rb_trace_arg_t *trace_arg)
283 {
284  rb_event_hook_t *hook;
285 
286  for (hook = list->hooks; hook; hook = hook->next) {
287  if (!(hook->hook_flags & RUBY_EVENT_HOOK_FLAG_DELETED) &&
288  (trace_arg->event & hook->events) &&
289  (LIKELY(hook->filter.th == 0) || hook->filter.th == rb_ec_thread_ptr(ec)) &&
290  (LIKELY(hook->filter.target_line == 0) || (hook->filter.target_line == (unsigned int)rb_vm_get_sourceline(ec->cfp)))) {
291  if (!(hook->hook_flags & RUBY_EVENT_HOOK_FLAG_RAW_ARG)) {
292  (*hook->func)(trace_arg->event, hook->data, trace_arg->self, trace_arg->id, trace_arg->klass);
293  }
294  else {
295  (*((rb_event_hook_raw_arg_func_t)hook->func))(hook->data, trace_arg);
296  }
297  }
298  }
299 }
300 
301 static int
302 exec_hooks_precheck(const rb_execution_context_t *ec, rb_hook_list_t *list, const rb_trace_arg_t *trace_arg)
303 {
304  if (list->events & trace_arg->event) {
305  list->running++;
306  return TRUE;
307  }
308  else {
309  return FALSE;
310  }
311 }
312 
313 static void
314 exec_hooks_postcheck(const rb_execution_context_t *ec, rb_hook_list_t *list)
315 {
316  list->running--;
317  clean_hooks_check(ec, list);
318 }
319 
320 static void
321 exec_hooks_unprotected(const rb_execution_context_t *ec, rb_hook_list_t *list, const rb_trace_arg_t *trace_arg)
322 {
323  if (exec_hooks_precheck(ec, list, trace_arg) == 0) return;
324  exec_hooks_body(ec, list, trace_arg);
325  exec_hooks_postcheck(ec, list);
326 }
327 
328 static int
329 exec_hooks_protected(rb_execution_context_t *ec, rb_hook_list_t *list, const rb_trace_arg_t *trace_arg)
330 {
331  enum ruby_tag_type state;
332  volatile int raised;
333 
334  if (exec_hooks_precheck(ec, list, trace_arg) == 0) return 0;
335 
336  raised = rb_ec_reset_raised(ec);
337 
338  /* TODO: Support !RUBY_EVENT_HOOK_FLAG_SAFE hooks */
339 
340  EC_PUSH_TAG(ec);
341  if ((state = EC_EXEC_TAG()) == TAG_NONE) {
342  exec_hooks_body(ec, list, trace_arg);
343  }
344  EC_POP_TAG();
345 
346  exec_hooks_postcheck(ec, list);
347 
348  if (raised) {
349  rb_ec_set_raised(ec);
350  }
351 
352  return state;
353 }
354 
356 rb_exec_event_hooks(rb_trace_arg_t *trace_arg, rb_hook_list_t *hooks, int pop_p)
357 {
358  rb_execution_context_t *ec = trace_arg->ec;
359 
360  if (UNLIKELY(trace_arg->event & RUBY_INTERNAL_EVENT_MASK)) {
361  if (ec->trace_arg && (ec->trace_arg->event & RUBY_INTERNAL_EVENT_MASK)) {
362  /* skip hooks because this thread doing INTERNAL_EVENT */
363  }
364  else {
365  rb_trace_arg_t *prev_trace_arg = ec->trace_arg;
366 
367  ec->trace_arg = trace_arg;
368  /* only global hooks */
369  exec_hooks_unprotected(ec, rb_vm_global_hooks(ec), trace_arg);
370  ec->trace_arg = prev_trace_arg;
371  }
372  }
373  else {
374  if (ec->trace_arg == NULL && /* check reentrant */
375  trace_arg->self != rb_mRubyVMFrozenCore /* skip special methods. TODO: remove it. */) {
376  const VALUE errinfo = ec->errinfo;
377  const VALUE old_recursive = ec->local_storage_recursive_hash;
378  int state = 0;
379 
380  /* setup */
382  ec->errinfo = Qnil;
383  ec->trace_arg = trace_arg;
384 
385  /* kick hooks */
386  if ((state = exec_hooks_protected(ec, hooks, trace_arg)) == TAG_NONE) {
387  ec->errinfo = errinfo;
388  }
389 
390  /* cleanup */
391  ec->trace_arg = NULL;
393  ec->local_storage_recursive_hash = old_recursive;
394 
395  if (state) {
396  if (pop_p) {
397  if (VM_FRAME_FINISHED_P(ec->cfp)) {
398  ec->tag = ec->tag->prev;
399  }
400  rb_vm_pop_frame(ec);
401  }
402  EC_JUMP_TAG(ec, state);
403  }
404  }
405  }
406 }
407 
408 VALUE
410 {
411  volatile int raised;
412  volatile VALUE result = Qnil;
413  rb_execution_context_t *const ec = GET_EC();
414  rb_vm_t *const vm = rb_ec_vm_ptr(ec);
415  enum ruby_tag_type state;
416  rb_trace_arg_t dummy_trace_arg;
417  dummy_trace_arg.event = 0;
418 
419  if (!ec->trace_arg) {
420  ec->trace_arg = &dummy_trace_arg;
421  }
422 
423  raised = rb_ec_reset_raised(ec);
424 
425  EC_PUSH_TAG(ec);
426  if (LIKELY((state = EC_EXEC_TAG()) == TAG_NONE)) {
427  result = (*func)(arg);
428  }
429  else {
430  (void)*&vm; /* suppress "clobbered" warning */
431  }
432  EC_POP_TAG();
433 
434  if (raised) {
435  rb_ec_reset_raised(ec);
436  }
437 
438  if (ec->trace_arg == &dummy_trace_arg) {
439  ec->trace_arg = NULL;
440  }
441 
442  if (state) {
443 #if defined RUBY_USE_SETJMPEX && RUBY_USE_SETJMPEX
444  RB_GC_GUARD(result);
445 #endif
446  EC_JUMP_TAG(ec, state);
447  }
448 
449  return result;
450 }
451 
452 static void call_trace_func(rb_event_flag_t, VALUE data, VALUE self, ID id, VALUE klass);
453 
454 /* (2-1) set_trace_func (old API) */
455 
456 /*
457  * call-seq:
458  * set_trace_func(proc) -> proc
459  * set_trace_func(nil) -> nil
460  *
461  * Establishes _proc_ as the handler for tracing, or disables
462  * tracing if the parameter is +nil+.
463  *
464  * *Note:* this method is obsolete, please use TracePoint instead.
465  *
466  * _proc_ takes up to six parameters:
467  *
468  * * an event name
469  * * a filename
470  * * a line number
471  * * an object id
472  * * a binding
473  * * the name of a class
474  *
475  * _proc_ is invoked whenever an event occurs.
476  *
477  * Events are:
478  *
479  * +c-call+:: call a C-language routine
480  * +c-return+:: return from a C-language routine
481  * +call+:: call a Ruby method
482  * +class+:: start a class or module definition
483  * +end+:: finish a class or module definition
484  * +line+:: execute code on a new line
485  * +raise+:: raise an exception
486  * +return+:: return from a Ruby method
487  *
488  * Tracing is disabled within the context of _proc_.
489  *
490  * class Test
491  * def test
492  * a = 1
493  * b = 2
494  * end
495  * end
496  *
497  * set_trace_func proc { |event, file, line, id, binding, classname|
498  * printf "%8s %s:%-2d %10s %8s\n", event, file, line, id, classname
499  * }
500  * t = Test.new
501  * t.test
502  *
503  * line prog.rb:11 false
504  * c-call prog.rb:11 new Class
505  * c-call prog.rb:11 initialize Object
506  * c-return prog.rb:11 initialize Object
507  * c-return prog.rb:11 new Class
508  * line prog.rb:12 false
509  * call prog.rb:2 test Test
510  * line prog.rb:3 test Test
511  * line prog.rb:4 test Test
512  * return prog.rb:4 test Test
513  */
514 
515 static VALUE
516 set_trace_func(VALUE obj, VALUE trace)
517 {
518  rb_remove_event_hook(call_trace_func);
519 
520  if (NIL_P(trace)) {
521  return Qnil;
522  }
523 
524  if (!rb_obj_is_proc(trace)) {
525  rb_raise(rb_eTypeError, "trace_func needs to be Proc");
526  }
527 
528  rb_add_event_hook(call_trace_func, RUBY_EVENT_ALL, trace);
529  return trace;
530 }
531 
532 static void
533 thread_add_trace_func(rb_execution_context_t *ec, rb_thread_t *filter_th, VALUE trace)
534 {
535  if (!rb_obj_is_proc(trace)) {
536  rb_raise(rb_eTypeError, "trace_func needs to be Proc");
537  }
538 
539  rb_threadptr_add_event_hook(ec, filter_th, call_trace_func, RUBY_EVENT_ALL, trace, RUBY_EVENT_HOOK_FLAG_SAFE);
540 }
541 
542 /*
543  * call-seq:
544  * thr.add_trace_func(proc) -> proc
545  *
546  * Adds _proc_ as a handler for tracing.
547  *
548  * See Thread#set_trace_func and Kernel#set_trace_func.
549  */
550 
551 static VALUE
552 thread_add_trace_func_m(VALUE obj, VALUE trace)
553 {
554  thread_add_trace_func(GET_EC(), rb_thread_ptr(obj), trace);
555  return trace;
556 }
557 
558 /*
559  * call-seq:
560  * thr.set_trace_func(proc) -> proc
561  * thr.set_trace_func(nil) -> nil
562  *
563  * Establishes _proc_ on _thr_ as the handler for tracing, or
564  * disables tracing if the parameter is +nil+.
565  *
566  * See Kernel#set_trace_func.
567  */
568 
569 static VALUE
570 thread_set_trace_func_m(VALUE target_thread, VALUE trace)
571 {
573  rb_thread_t *target_th = rb_thread_ptr(target_thread);
574 
575  rb_threadptr_remove_event_hook(ec, target_th, call_trace_func, Qundef);
576 
577  if (NIL_P(trace)) {
578  return Qnil;
579  }
580  else {
581  thread_add_trace_func(ec, target_th, trace);
582  return trace;
583  }
584 }
585 
586 static const char *
587 get_event_name(rb_event_flag_t event)
588 {
589  switch (event) {
590  case RUBY_EVENT_LINE: return "line";
591  case RUBY_EVENT_CLASS: return "class";
592  case RUBY_EVENT_END: return "end";
593  case RUBY_EVENT_CALL: return "call";
594  case RUBY_EVENT_RETURN: return "return";
595  case RUBY_EVENT_C_CALL: return "c-call";
596  case RUBY_EVENT_C_RETURN: return "c-return";
597  case RUBY_EVENT_RAISE: return "raise";
598  default:
599  return "unknown";
600  }
601 }
602 
603 static ID
604 get_event_id(rb_event_flag_t event)
605 {
606  ID id;
607 
608  switch (event) {
609 #define C(name, NAME) case RUBY_EVENT_##NAME: CONST_ID(id, #name); return id;
610  C(line, LINE);
611  C(class, CLASS);
612  C(end, END);
613  C(call, CALL);
614  C(return, RETURN);
615  C(c_call, C_CALL);
616  C(c_return, C_RETURN);
617  C(raise, RAISE);
618  C(b_call, B_CALL);
619  C(b_return, B_RETURN);
620  C(thread_begin, THREAD_BEGIN);
621  C(thread_end, THREAD_END);
622  C(fiber_switch, FIBER_SWITCH);
623  C(script_compiled, SCRIPT_COMPILED);
624 #undef C
625  default:
626  return 0;
627  }
628 }
629 
630 static void
631 get_path_and_lineno(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, rb_event_flag_t event, VALUE *pathp, int *linep)
632 {
634 
635  if (cfp) {
636  const rb_iseq_t *iseq = cfp->iseq;
637  *pathp = rb_iseq_path(iseq);
638 
639  if (event & (RUBY_EVENT_CLASS |
642  *linep = FIX2INT(rb_iseq_first_lineno(iseq));
643  }
644  else {
645  *linep = rb_vm_get_sourceline(cfp);
646  }
647  }
648  else {
649  *pathp = Qnil;
650  *linep = 0;
651  }
652 }
653 
654 static void
655 call_trace_func(rb_event_flag_t event, VALUE proc, VALUE self, ID id, VALUE klass)
656 {
657  int line;
658  VALUE filename;
659  VALUE eventname = rb_str_new2(get_event_name(event));
660  VALUE argv[6];
661  const rb_execution_context_t *ec = GET_EC();
662 
663  get_path_and_lineno(ec, ec->cfp, event, &filename, &line);
664 
665  if (!klass) {
667  }
668 
669  if (klass) {
670  if (RB_TYPE_P(klass, T_ICLASS)) {
671  klass = RBASIC(klass)->klass;
672  }
673  else if (FL_TEST(klass, FL_SINGLETON)) {
675  }
676  }
677 
678  argv[0] = eventname;
679  argv[1] = filename;
680  argv[2] = INT2FIX(line);
681  argv[3] = id ? ID2SYM(id) : Qnil;
682  argv[4] = (self && (filename != Qnil)) ? rb_binding_new() : Qnil;
683  argv[5] = klass ? klass : Qnil;
684 
685  rb_proc_call_with_block(proc, 6, argv, Qnil);
686 }
687 
688 /* (2-2) TracePoint API */
689 
690 static VALUE rb_cTracePoint;
691 
692 typedef struct rb_tp_struct {
694  int tracing; /* bool */
696  VALUE local_target_set; /* Hash: target ->
697  * Qtrue (if target is iseq) or
698  * Qfalse (if target is bmethod)
699  */
700  void (*func)(VALUE tpval, void *data);
701  void *data;
703  VALUE self;
704 } rb_tp_t;
705 
706 static void
707 tp_mark(void *ptr)
708 {
709  rb_tp_t *tp = ptr;
710  rb_gc_mark(tp->proc);
712  if (tp->target_th) rb_gc_mark(tp->target_th->self);
713 }
714 
715 static size_t
716 tp_memsize(const void *ptr)
717 {
718  return sizeof(rb_tp_t);
719 }
720 
721 static const rb_data_type_t tp_data_type = {
722  "tracepoint",
723  {tp_mark, RUBY_TYPED_NEVER_FREE, tp_memsize,},
725 };
726 
727 static VALUE
728 tp_alloc(VALUE klass)
729 {
730  rb_tp_t *tp;
731  return TypedData_Make_Struct(klass, rb_tp_t, &tp_data_type, tp);
732 }
733 
734 static rb_event_flag_t
735 symbol2event_flag(VALUE v)
736 {
737  ID id;
739  const rb_event_flag_t RUBY_EVENT_A_CALL =
741  const rb_event_flag_t RUBY_EVENT_A_RETURN =
743 
744 #define C(name, NAME) CONST_ID(id, #name); if (sym == ID2SYM(id)) return RUBY_EVENT_##NAME
745  C(line, LINE);
746  C(class, CLASS);
747  C(end, END);
748  C(call, CALL);
749  C(return, RETURN);
750  C(c_call, C_CALL);
751  C(c_return, C_RETURN);
752  C(raise, RAISE);
753  C(b_call, B_CALL);
754  C(b_return, B_RETURN);
755  C(thread_begin, THREAD_BEGIN);
756  C(thread_end, THREAD_END);
757  C(fiber_switch, FIBER_SWITCH);
758  C(script_compiled, SCRIPT_COMPILED);
759 
760  /* joke */
761  C(a_call, A_CALL);
762  C(a_return, A_RETURN);
763 #undef C
764  rb_raise(rb_eArgError, "unknown event: %"PRIsVALUE, rb_sym2str(sym));
765 }
766 
767 static rb_tp_t *
768 tpptr(VALUE tpval)
769 {
770  rb_tp_t *tp;
771  TypedData_Get_Struct(tpval, rb_tp_t, &tp_data_type, tp);
772  return tp;
773 }
774 
775 static rb_trace_arg_t *
776 get_trace_arg(void)
777 {
778  rb_trace_arg_t *trace_arg = GET_EC()->trace_arg;
779  if (trace_arg == 0) {
780  rb_raise(rb_eRuntimeError, "access from outside");
781  }
782  return trace_arg;
783 }
784 
785 struct rb_trace_arg_struct *
787 {
788  return get_trace_arg();
789 }
790 
793 {
794  return trace_arg->event;
795 }
796 
797 VALUE
799 {
800  return ID2SYM(get_event_id(trace_arg->event));
801 }
802 
803 static void
804 fill_path_and_lineno(rb_trace_arg_t *trace_arg)
805 {
806  if (trace_arg->path == Qundef) {
807  get_path_and_lineno(trace_arg->ec, trace_arg->cfp, trace_arg->event, &trace_arg->path, &trace_arg->lineno);
808  }
809 }
810 
811 VALUE
813 {
814  fill_path_and_lineno(trace_arg);
815  return INT2FIX(trace_arg->lineno);
816 }
817 VALUE
819 {
820  fill_path_and_lineno(trace_arg);
821  return trace_arg->path;
822 }
823 
824 static void
825 fill_id_and_klass(rb_trace_arg_t *trace_arg)
826 {
827  if (!trace_arg->klass_solved) {
828  if (!trace_arg->klass) {
829  rb_vm_control_frame_id_and_class(trace_arg->cfp, &trace_arg->id, &trace_arg->called_id, &trace_arg->klass);
830  }
831 
832  if (trace_arg->klass) {
833  if (RB_TYPE_P(trace_arg->klass, T_ICLASS)) {
834  trace_arg->klass = RBASIC(trace_arg->klass)->klass;
835  }
836  }
837  else {
838  trace_arg->klass = Qnil;
839  }
840 
841  trace_arg->klass_solved = 1;
842  }
843 }
844 
845 VALUE
847 {
848  switch(trace_arg->event) {
849  case RUBY_EVENT_CALL:
850  case RUBY_EVENT_RETURN:
851  case RUBY_EVENT_B_CALL:
852  case RUBY_EVENT_B_RETURN: {
853  const rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(trace_arg->ec, trace_arg->cfp);
854  if (cfp) {
855  int is_proc = 0;
856  if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_BLOCK && !VM_FRAME_LAMBDA_P(cfp)) {
857  is_proc = 1;
858  }
859  return rb_iseq_parameters(cfp->iseq, is_proc);
860  }
861  break;
862  }
863  case RUBY_EVENT_C_CALL:
864  case RUBY_EVENT_C_RETURN: {
865  fill_id_and_klass(trace_arg);
866  if (trace_arg->klass && trace_arg->id) {
867  const rb_method_entry_t *me;
868  VALUE iclass = Qnil;
869  me = rb_method_entry_without_refinements(trace_arg->klass, trace_arg->id, &iclass);
871  }
872  break;
873  }
874  case RUBY_EVENT_RAISE:
875  case RUBY_EVENT_LINE:
876  case RUBY_EVENT_CLASS:
877  case RUBY_EVENT_END:
879  rb_raise(rb_eRuntimeError, "not supported by this event");
880  break;
881  }
882  return Qnil;
883 }
884 
885 VALUE
887 {
888  fill_id_and_klass(trace_arg);
889  return trace_arg->id ? ID2SYM(trace_arg->id) : Qnil;
890 }
891 
892 VALUE
894 {
895  fill_id_and_klass(trace_arg);
896  return trace_arg->called_id ? ID2SYM(trace_arg->called_id) : Qnil;
897 }
898 
899 VALUE
901 {
902  fill_id_and_klass(trace_arg);
903  return trace_arg->klass;
904 }
905 
906 VALUE
908 {
910  cfp = rb_vm_get_binding_creatable_next_cfp(trace_arg->ec, trace_arg->cfp);
911 
912  if (cfp) {
913  return rb_vm_make_binding(trace_arg->ec, cfp);
914  }
915  else {
916  return Qnil;
917  }
918 }
919 
920 VALUE
922 {
923  return trace_arg->self;
924 }
925 
926 VALUE
928 {
930  /* ok */
931  }
932  else {
933  rb_raise(rb_eRuntimeError, "not supported by this event");
934  }
935  if (trace_arg->data == Qundef) {
936  rb_bug("rb_tracearg_return_value: unreachable");
937  }
938  return trace_arg->data;
939 }
940 
941 VALUE
943 {
944  if (trace_arg->event & (RUBY_EVENT_RAISE)) {
945  /* ok */
946  }
947  else {
948  rb_raise(rb_eRuntimeError, "not supported by this event");
949  }
950  if (trace_arg->data == Qundef) {
951  rb_bug("rb_tracearg_raised_exception: unreachable");
952  }
953  return trace_arg->data;
954 }
955 
956 VALUE
958 {
959  VALUE data = trace_arg->data;
960 
961  if (trace_arg->event & (RUBY_EVENT_SCRIPT_COMPILED)) {
962  /* ok */
963  }
964  else {
965  rb_raise(rb_eRuntimeError, "not supported by this event");
966  }
967  if (data == Qundef) {
968  rb_bug("rb_tracearg_raised_exception: unreachable");
969  }
970  if (rb_obj_is_iseq(data)) {
971  return Qnil;
972  }
973  else {
975  /* [src, iseq] */
976  return RARRAY_AREF(data, 0);
977  }
978 }
979 
980 VALUE
982 {
983  VALUE data = trace_arg->data;
984 
985  if (trace_arg->event & (RUBY_EVENT_SCRIPT_COMPILED)) {
986  /* ok */
987  }
988  else {
989  rb_raise(rb_eRuntimeError, "not supported by this event");
990  }
991  if (data == Qundef) {
992  rb_bug("rb_tracearg_raised_exception: unreachable");
993  }
994 
995  if (rb_obj_is_iseq(data)) {
996  return rb_iseqw_new((const rb_iseq_t *)data);
997  }
998  else {
1000  VM_ASSERT(rb_obj_is_iseq(RARRAY_AREF(data, 1)));
1001 
1002  /* [src, iseq] */
1003  return rb_iseqw_new((const rb_iseq_t *)RARRAY_AREF(data, 1));
1004  }
1005 }
1006 
1007 VALUE
1009 {
1011  /* ok */
1012  }
1013  else {
1014  rb_raise(rb_eRuntimeError, "not supported by this event");
1015  }
1016  if (trace_arg->data == Qundef) {
1017  rb_bug("rb_tracearg_object: unreachable");
1018  }
1019  return trace_arg->data;
1020 }
1021 
1022 static VALUE
1023 tracepoint_attr_event(rb_execution_context_t *ec, VALUE tpval)
1024 {
1025  return rb_tracearg_event(get_trace_arg());
1026 }
1027 
1028 static VALUE
1029 tracepoint_attr_lineno(rb_execution_context_t *ec, VALUE tpval)
1030 {
1031  return rb_tracearg_lineno(get_trace_arg());
1032 }
1033 static VALUE
1034 tracepoint_attr_path(rb_execution_context_t *ec, VALUE tpval)
1035 {
1036  return rb_tracearg_path(get_trace_arg());
1037 }
1038 
1039 static VALUE
1040 tracepoint_attr_parameters(rb_execution_context_t *ec, VALUE tpval)
1041 {
1042  return rb_tracearg_parameters(get_trace_arg());
1043 }
1044 
1045 static VALUE
1046 tracepoint_attr_method_id(rb_execution_context_t *ec, VALUE tpval)
1047 {
1048  return rb_tracearg_method_id(get_trace_arg());
1049 }
1050 
1051 static VALUE
1052 tracepoint_attr_callee_id(rb_execution_context_t *ec, VALUE tpval)
1053 {
1054  return rb_tracearg_callee_id(get_trace_arg());
1055 }
1056 
1057 static VALUE
1058 tracepoint_attr_defined_class(rb_execution_context_t *ec, VALUE tpval)
1059 {
1060  return rb_tracearg_defined_class(get_trace_arg());
1061 }
1062 
1063 static VALUE
1064 tracepoint_attr_binding(rb_execution_context_t *ec, VALUE tpval)
1065 {
1066  return rb_tracearg_binding(get_trace_arg());
1067 }
1068 
1069 static VALUE
1070 tracepoint_attr_self(rb_execution_context_t *ec, VALUE tpval)
1071 {
1072  return rb_tracearg_self(get_trace_arg());
1073 }
1074 
1075 static VALUE
1076 tracepoint_attr_return_value(rb_execution_context_t *ec, VALUE tpval)
1077 {
1078  return rb_tracearg_return_value(get_trace_arg());
1079 }
1080 
1081 static VALUE
1082 tracepoint_attr_raised_exception(rb_execution_context_t *ec, VALUE tpval)
1083 {
1084  return rb_tracearg_raised_exception(get_trace_arg());
1085 }
1086 
1087 static VALUE
1088 tracepoint_attr_eval_script(rb_execution_context_t *ec, VALUE tpval)
1089 {
1090  return rb_tracearg_eval_script(get_trace_arg());
1091 }
1092 
1093 static VALUE
1094 tracepoint_attr_instruction_sequence(rb_execution_context_t *ec, VALUE tpval)
1095 {
1096  return rb_tracearg_instruction_sequence(get_trace_arg());
1097 }
1098 
1099 static void
1100 tp_call_trace(VALUE tpval, rb_trace_arg_t *trace_arg)
1101 {
1102  rb_tp_t *tp = tpptr(tpval);
1103 
1104  if (tp->func) {
1105  (*tp->func)(tpval, tp->data);
1106  }
1107  else {
1108  rb_proc_call_with_block((VALUE)tp->proc, 1, &tpval, Qnil);
1109  }
1110 }
1111 
1112 VALUE
1114 {
1115  rb_tp_t *tp;
1116  tp = tpptr(tpval);
1117 
1118  if (tp->local_target_set != Qfalse) {
1119  rb_raise(rb_eArgError, "can't nest-enable a targeting TracePoint");
1120  }
1121 
1122  if (tp->target_th) {
1123  rb_thread_add_event_hook2(tp->target_th->self, (rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
1125  }
1126  else {
1127  rb_add_event_hook2((rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
1129  }
1130  tp->tracing = 1;
1131  return Qundef;
1132 }
1133 
1134 static const rb_iseq_t *
1135 iseq_of(VALUE target)
1136 {
1137  VALUE iseqv = rb_funcall(rb_cISeq, rb_intern("of"), 1, target);
1138  if (NIL_P(iseqv)) {
1139  rb_raise(rb_eArgError, "specified target is not supported");
1140  }
1141  else {
1142  return rb_iseqw_to_iseq(iseqv);
1143  }
1144 }
1145 
1146 const rb_method_definition_t *rb_method_def(VALUE method); /* proc.c */
1147 
1148 static VALUE
1149 rb_tracepoint_enable_for_target(VALUE tpval, VALUE target, VALUE target_line)
1150 {
1151  rb_tp_t *tp = tpptr(tpval);
1152  const rb_iseq_t *iseq = iseq_of(target);
1153  int n;
1154  unsigned int line = 0;
1155 
1156  if (tp->tracing > 0) {
1157  rb_raise(rb_eArgError, "can't nest-enable a targeting TracePoint");
1158  }
1159 
1160  if (!NIL_P(target_line)) {
1161  if ((tp->events & RUBY_EVENT_LINE) == 0) {
1162  rb_raise(rb_eArgError, "target_line is specified, but line event is not specified");
1163  }
1164  else {
1165  line = NUM2UINT(target_line);
1166  }
1167  }
1168 
1171 
1172  /* iseq */
1175 
1176  /* bmethod */
1177  if (rb_obj_is_method(target)) {
1179  if (def->type == VM_METHOD_TYPE_BMETHOD &&
1182  rb_hook_list_connect_tracepoint(target, def->body.bmethod.hooks, tpval, 0);
1183  rb_hash_aset(tp->local_target_set, target, Qfalse);
1184 
1185  n++;
1186  }
1187  }
1188 
1189  if (n == 0) {
1190  rb_raise(rb_eArgError, "can not enable any hooks");
1191  }
1192 
1194 
1195  tp->tracing = 1;
1196 
1197  return Qnil;
1198 }
1199 
1200 static int
1201 disable_local_event_iseq_i(VALUE target, VALUE iseq_p, VALUE tpval)
1202 {
1203  if (iseq_p) {
1205  }
1206  else {
1207  /* bmethod */
1209  rb_hook_list_t *hooks = def->body.bmethod.hooks;
1210  VM_ASSERT(hooks != NULL);
1211  rb_hook_list_remove_tracepoint(hooks, tpval);
1212  if (hooks->running == 0) {
1214  }
1215  def->body.bmethod.hooks = NULL;
1216  }
1217  return ST_CONTINUE;
1218 }
1219 
1220 VALUE
1222 {
1223  rb_tp_t *tp;
1224 
1225  tp = tpptr(tpval);
1226 
1227  if (tp->local_target_set) {
1228  rb_hash_foreach(tp->local_target_set, disable_local_event_iseq_i, tpval);
1229  tp->local_target_set = Qfalse;
1231  }
1232  else {
1233  if (tp->target_th) {
1235  }
1236  else {
1238  }
1239  }
1240  tp->tracing = 0;
1241  tp->target_th = NULL;
1242  return Qundef;
1243 }
1244 
1245 void
1246 rb_hook_list_connect_tracepoint(VALUE target, rb_hook_list_t *list, VALUE tpval, unsigned int target_line)
1247 {
1248  rb_tp_t *tp = tpptr(tpval);
1249  rb_event_hook_t *hook = alloc_event_hook((rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
1251  hook->filter.target_line = target_line;
1252  hook_list_connect(target, list, hook, FALSE);
1253 }
1254 
1255 void
1257 {
1258  rb_event_hook_t *hook = list->hooks;
1259  rb_event_flag_t events = 0;
1260 
1261  while (hook) {
1262  if (hook->data == tpval) {
1264  list->need_clean = TRUE;
1265  }
1266  else {
1267  events |= hook->events;
1268  }
1269  hook = hook->next;
1270  }
1271 
1272  list->events = events;
1273 }
1274 
1275 static VALUE
1276 tracepoint_enable_m(rb_execution_context_t *ec, VALUE tpval, VALUE target, VALUE target_line, VALUE target_thread)
1277 {
1278  rb_tp_t *tp = tpptr(tpval);
1279  int previous_tracing = tp->tracing;
1280 
1281  /* check target_thread */
1282  if (RTEST(target_thread)) {
1283  if (tp->target_th) {
1284  rb_raise(rb_eArgError, "can not override target_thread filter");
1285  }
1286  tp->target_th = rb_thread_ptr(target_thread);
1287  }
1288  else {
1289  tp->target_th = NULL;
1290  }
1291 
1292  if (NIL_P(target)) {
1293  if (!NIL_P(target_line)) {
1294  rb_raise(rb_eArgError, "only target_line is specified");
1295  }
1296  rb_tracepoint_enable(tpval);
1297  }
1298  else {
1299  rb_tracepoint_enable_for_target(tpval, target, target_line);
1300  }
1301 
1302  if (rb_block_given_p()) {
1303  return rb_ensure(rb_yield, Qundef,
1304  previous_tracing ? rb_tracepoint_enable : rb_tracepoint_disable,
1305  tpval);
1306  }
1307  else {
1308  return previous_tracing ? Qtrue : Qfalse;
1309  }
1310 }
1311 
1312 static VALUE
1313 tracepoint_disable_m(rb_execution_context_t *ec, VALUE tpval)
1314 {
1315  rb_tp_t *tp = tpptr(tpval);
1316  int previous_tracing = tp->tracing;
1317 
1318  if (rb_block_given_p()) {
1319  if (tp->local_target_set != Qfalse) {
1320  rb_raise(rb_eArgError, "can't disable a targeting TracePoint in a block");
1321  }
1322 
1323  rb_tracepoint_disable(tpval);
1324  return rb_ensure(rb_yield, Qundef,
1325  previous_tracing ? rb_tracepoint_enable : rb_tracepoint_disable,
1326  tpval);
1327  }
1328  else {
1329  rb_tracepoint_disable(tpval);
1330  return previous_tracing ? Qtrue : Qfalse;
1331  }
1332 }
1333 
1334 VALUE
1336 {
1337  rb_tp_t *tp = tpptr(tpval);
1338  return tp->tracing ? Qtrue : Qfalse;
1339 }
1340 
1341 static VALUE
1342 tracepoint_enabled_p(rb_execution_context_t *ec, VALUE tpval)
1343 {
1344  return rb_tracepoint_enabled_p(tpval);
1345 }
1346 
1347 static VALUE
1348 tracepoint_new(VALUE klass, rb_thread_t *target_th, rb_event_flag_t events, void (func)(VALUE, void*), void *data, VALUE proc)
1349 {
1350  VALUE tpval = tp_alloc(klass);
1351  rb_tp_t *tp;
1352  TypedData_Get_Struct(tpval, rb_tp_t, &tp_data_type, tp);
1353 
1354  tp->proc = proc;
1355  tp->func = func;
1356  tp->data = data;
1357  tp->events = events;
1358  tp->self = tpval;
1359 
1360  return tpval;
1361 }
1362 
1363 /*
1364  * Creates a tracepoint by registering a callback function for one or more
1365  * tracepoint events. Once the tracepoint is created, you can use
1366  * rb_tracepoint_enable to enable the tracepoint.
1367  *
1368  * Parameters:
1369  * 1. VALUE target_thval - Meant for picking the thread in which the tracepoint
1370  * is to be created. However, current implementation ignore this parameter,
1371  * tracepoint is created for all threads. Simply specify Qnil.
1372  * 2. rb_event_flag_t events - Event(s) to listen to.
1373  * 3. void (*func)(VALUE, void *) - A callback function.
1374  * 4. void *data - Void pointer that will be passed to the callback function.
1375  *
1376  * When the callback function is called, it will be passed 2 parameters:
1377  * 1)VALUE tpval - the TracePoint object from which trace args can be extracted.
1378  * 2)void *data - A void pointer which helps to share scope with the callback function.
1379  *
1380  * It is important to note that you cannot register callbacks for normal events and internal events
1381  * simultaneously because they are different purpose.
1382  * You can use any Ruby APIs (calling methods and so on) on normal event hooks.
1383  * However, in internal events, you can not use any Ruby APIs (even object creations).
1384  * This is why we can't specify internal events by TracePoint directly.
1385  * Limitations are MRI version specific.
1386  *
1387  * Example:
1388  * rb_tracepoint_new(Qnil, RUBY_INTERNAL_EVENT_NEWOBJ | RUBY_INTERNAL_EVENT_FREEOBJ, obj_event_i, data);
1389  *
1390  * In this example, a callback function obj_event_i will be registered for
1391  * internal events RUBY_INTERNAL_EVENT_NEWOBJ and RUBY_INTERNAL_EVENT_FREEOBJ.
1392  */
1393 VALUE
1394 rb_tracepoint_new(VALUE target_thval, rb_event_flag_t events, void (*func)(VALUE, void *), void *data)
1395 {
1396  rb_thread_t *target_th = NULL;
1397 
1398  if (RTEST(target_thval)) {
1399  target_th = rb_thread_ptr(target_thval);
1400  /* TODO: Test it!
1401  * Warning: This function is not tested.
1402  */
1403  }
1404  return tracepoint_new(rb_cTracePoint, target_th, events, func, data, Qundef);
1405 }
1406 
1407 static VALUE
1408 tracepoint_new_s(rb_execution_context_t *ec, VALUE self, VALUE args)
1409 {
1410  rb_event_flag_t events = 0;
1411  long i;
1412  long argc = RARRAY_LEN(args);
1413 
1414  if (argc > 0) {
1415  for (i=0; i<argc; i++) {
1416  events |= symbol2event_flag(RARRAY_AREF(args, i));
1417  }
1418  }
1419  else {
1420  events = RUBY_EVENT_TRACEPOINT_ALL;
1421  }
1422 
1423  if (!rb_block_given_p()) {
1424  rb_raise(rb_eArgError, "must be called with a block");
1425  }
1426 
1427  return tracepoint_new(self, 0, events, 0, 0, rb_block_proc());
1428 }
1429 
1430 static VALUE
1431 tracepoint_trace_s(rb_execution_context_t *ec, VALUE self, VALUE args)
1432 {
1433  VALUE trace = tracepoint_new_s(ec, self, args);
1434  rb_tracepoint_enable(trace);
1435  return trace;
1436 }
1437 
1438 static VALUE
1439 tracepoint_inspect(rb_execution_context_t *ec, VALUE self)
1440 {
1441  rb_tp_t *tp = tpptr(self);
1442  rb_trace_arg_t *trace_arg = GET_EC()->trace_arg;
1443 
1444  if (trace_arg) {
1445  switch (trace_arg->event) {
1446  case RUBY_EVENT_LINE:
1447  {
1448  VALUE sym = rb_tracearg_method_id(trace_arg);
1449  if (NIL_P(sym))
1450  goto default_inspect;
1451  return rb_sprintf("#<TracePoint:%"PRIsVALUE"@%"PRIsVALUE":%d in `%"PRIsVALUE"'>",
1452  rb_tracearg_event(trace_arg),
1453  rb_tracearg_path(trace_arg),
1454  FIX2INT(rb_tracearg_lineno(trace_arg)),
1455  sym);
1456  }
1457  case RUBY_EVENT_CALL:
1458  case RUBY_EVENT_C_CALL:
1459  case RUBY_EVENT_RETURN:
1460  case RUBY_EVENT_C_RETURN:
1461  return rb_sprintf("#<TracePoint:%"PRIsVALUE" `%"PRIsVALUE"'@%"PRIsVALUE":%d>",
1462  rb_tracearg_event(trace_arg),
1463  rb_tracearg_method_id(trace_arg),
1464  rb_tracearg_path(trace_arg),
1465  FIX2INT(rb_tracearg_lineno(trace_arg)));
1467  case RUBY_EVENT_THREAD_END:
1468  return rb_sprintf("#<TracePoint:%"PRIsVALUE" %"PRIsVALUE">",
1469  rb_tracearg_event(trace_arg),
1470  rb_tracearg_self(trace_arg));
1471  default:
1473  return rb_sprintf("#<TracePoint:%"PRIsVALUE"@%"PRIsVALUE":%d>",
1474  rb_tracearg_event(trace_arg),
1475  rb_tracearg_path(trace_arg),
1476  FIX2INT(rb_tracearg_lineno(trace_arg)));
1477  }
1478  }
1479  else {
1480  return rb_sprintf("#<TracePoint:%s>", tp->tracing ? "enabled" : "disabled");
1481  }
1482 }
1483 
1484 static void
1485 tracepoint_stat_event_hooks(VALUE hash, VALUE key, rb_event_hook_t *hook)
1486 {
1487  int active = 0, deleted = 0;
1488 
1489  while (hook) {
1491  deleted++;
1492  }
1493  else {
1494  active++;
1495  }
1496  hook = hook->next;
1497  }
1498 
1499  rb_hash_aset(hash, key, rb_ary_new3(2, INT2FIX(active), INT2FIX(deleted)));
1500 }
1501 
1502 static VALUE
1503 tracepoint_stat_s(rb_execution_context_t *ec, VALUE self)
1504 {
1505  rb_vm_t *vm = GET_VM();
1506  VALUE stat = rb_hash_new();
1507 
1508  tracepoint_stat_event_hooks(stat, vm->self, vm->global_hooks.hooks);
1509  /* TODO: thread local hooks */
1510 
1511  return stat;
1512 }
1513 
1514 #include "trace_point.rbinc"
1515 
1516 /* This function is called from inits.c */
1517 void
1519 {
1520  /* trace_func */
1521  rb_define_global_function("set_trace_func", set_trace_func, 1);
1522  rb_define_method(rb_cThread, "set_trace_func", thread_set_trace_func_m, 1);
1523  rb_define_method(rb_cThread, "add_trace_func", thread_add_trace_func_m, 1);
1524 
1525  rb_cTracePoint = rb_define_class("TracePoint", rb_cObject);
1526  rb_undef_alloc_func(rb_cTracePoint);
1527 
1528  load_trace_point();
1529 }
1530 
1531 typedef struct rb_postponed_job_struct {
1533  void *data;
1535 
1536 #define MAX_POSTPONED_JOB 1000
1537 #define MAX_POSTPONED_JOB_SPECIAL_ADDITION 24
1538 
1540  struct list_node jnode; /* <=> vm->workqueue */
1542 };
1543 
1544 void
1546 {
1547  rb_vm_t *vm = GET_VM();
1549  vm->postponed_job_index = 0;
1550  /* workqueue is initialized when VM locks are initialized */
1551 }
1552 
1557 };
1558 
1559 /* Async-signal-safe */
1561 postponed_job_register(rb_execution_context_t *ec, rb_vm_t *vm,
1562  unsigned int flags, rb_postponed_job_func_t func, void *data, int max, int expected_index)
1563 {
1564  rb_postponed_job_t *pjob;
1565 
1566  if (expected_index >= max) return PJRR_FULL; /* failed */
1567 
1568  if (ATOMIC_CAS(vm->postponed_job_index, expected_index, expected_index+1) == expected_index) {
1569  pjob = &vm->postponed_job_buffer[expected_index];
1570  }
1571  else {
1572  return PJRR_INTERRUPTED;
1573  }
1574 
1575  /* unused: pjob->flags = flags; */
1576  pjob->func = func;
1577  pjob->data = data;
1578 
1580 
1581  return PJRR_SUCCESS;
1582 }
1583 
1584 /*
1585  * return 0 if job buffer is full
1586  * Async-signal-safe
1587  */
1588 int
1589 rb_postponed_job_register(unsigned int flags, rb_postponed_job_func_t func, void *data)
1590 {
1592  rb_vm_t *vm = rb_ec_vm_ptr(ec);
1593 
1594  begin:
1595  switch (postponed_job_register(ec, vm, flags, func, data, MAX_POSTPONED_JOB, vm->postponed_job_index)) {
1596  case PJRR_SUCCESS : return 1;
1597  case PJRR_FULL : return 0;
1598  case PJRR_INTERRUPTED: goto begin;
1599  default: rb_bug("unreachable\n");
1600  }
1601 }
1602 
1603 /*
1604  * return 0 if job buffer is full
1605  * Async-signal-safe
1606  */
1607 int
1608 rb_postponed_job_register_one(unsigned int flags, rb_postponed_job_func_t func, void *data)
1609 {
1611  rb_vm_t *vm = rb_ec_vm_ptr(ec);
1612  rb_postponed_job_t *pjob;
1613  int i, index;
1614 
1615  begin:
1616  index = vm->postponed_job_index;
1617  for (i=0; i<index; i++) {
1618  pjob = &vm->postponed_job_buffer[i];
1619  if (pjob->func == func) {
1621  return 2;
1622  }
1623  }
1624  switch (postponed_job_register(ec, vm, flags, func, data, MAX_POSTPONED_JOB + MAX_POSTPONED_JOB_SPECIAL_ADDITION, index)) {
1625  case PJRR_SUCCESS : return 1;
1626  case PJRR_FULL : return 0;
1627  case PJRR_INTERRUPTED: goto begin;
1628  default: rb_bug("unreachable\n");
1629  }
1630 }
1631 
1632 /*
1633  * thread-safe and called from non-Ruby thread
1634  * returns FALSE on failure (ENOMEM), TRUE otherwise
1635  */
1636 int
1637 rb_workqueue_register(unsigned flags, rb_postponed_job_func_t func, void *data)
1638 {
1639  struct rb_workqueue_job *wq_job = malloc(sizeof(*wq_job));
1640  rb_vm_t *vm = GET_VM();
1641 
1642  if (!wq_job) return FALSE;
1643  wq_job->job.func = func;
1644  wq_job->job.data = data;
1645 
1647  list_add_tail(&vm->workqueue, &wq_job->jnode);
1649 
1651 
1652  return TRUE;
1653 }
1654 
1655 void
1657 {
1660  volatile rb_atomic_t saved_mask = ec->interrupt_mask & block_mask;
1661  VALUE volatile saved_errno = ec->errinfo;
1662  struct list_head tmp;
1663 
1664  list_head_init(&tmp);
1665 
1667  list_append_list(&tmp, &vm->workqueue);
1669 
1670  ec->errinfo = Qnil;
1671  /* mask POSTPONED_JOB dispatch */
1672  ec->interrupt_mask |= block_mask;
1673  {
1674  EC_PUSH_TAG(ec);
1675  if (EC_EXEC_TAG() == TAG_NONE) {
1676  int index;
1677  struct rb_workqueue_job *wq_job;
1678 
1679  while ((index = vm->postponed_job_index) > 0) {
1680  if (ATOMIC_CAS(vm->postponed_job_index, index, index-1) == index) {
1682  (*pjob->func)(pjob->data);
1683  }
1684  }
1685  while ((wq_job = list_pop(&tmp, struct rb_workqueue_job, jnode))) {
1686  rb_postponed_job_t pjob = wq_job->job;
1687 
1688  free(wq_job);
1689  (pjob.func)(pjob.data);
1690  }
1691  }
1692  EC_POP_TAG();
1693  }
1694  /* restore POSTPONED_JOB mask */
1695  ec->interrupt_mask &= ~(saved_mask ^ block_mask);
1696  ec->errinfo = saved_errno;
1697 
1698  /* don't leak memory if a job threw an exception */
1699  if (!list_empty(&tmp)) {
1701  list_prepend_list(&vm->workqueue, &tmp);
1703 
1705  }
1706 }
PJRR_INTERRUPTED
@ PJRR_INTERRUPTED
Definition: vm_trace.c:1556
rb_workqueue_job::job
rb_postponed_job_t job
Definition: vm_trace.c:1541
rb_vm_struct::workqueue
struct list_head workqueue
Definition: vm_core.h:642
UNLIKELY
#define UNLIKELY(x)
Definition: ffi_common.h:126
ID
unsigned long ID
Definition: ruby.h:103
rb_define_class
VALUE rb_define_class(const char *name, VALUE super)
Defines a top-level class.
Definition: class.c:649
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int rb_method_entry_arity(const rb_method_entry_t *me)
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void
void
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#define TypedData_Make_Struct(klass, type, data_type, sval)
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TRUE
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stat
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rb_tp_struct::data
void * data
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RUBY_TYPED_NEVER_FREE
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Definition: intern.h:903
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Make the object invisible from Ruby code.
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Definition: hash.c:1501
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int rb_block_given_p(void)
Determines if the current method is given a block.
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@ RUBY_EVENT_HOOK_FLAG_RAW_ARG
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@ POSTPONED_JOB_INTERRUPT_MASK
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struct rb_event_hook_struct::@193 filter
MAX_POSTPONED_JOB
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@ PJRR_FULL
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Definition: rb_mjit_min_header-2.7.0.h:5742
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PJRR_SUCCESS
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EC_POP_TAG
#define EC_POP_TAG()
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rb_event_flag_t ruby_vm_event_flags
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@ VM_METHOD_TYPE_BMETHOD
Definition: method.h:106
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#define ALLOC(type)
Definition: ruby.h:1664
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int rb_ec_set_raised(rb_execution_context_t *ec)
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Definition: error.c:920
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Definition: vm_trace.c:981
RUBY_EVENT_SCRIPT_COMPILED
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Definition: ruby.h:2258
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Definition: vm_trace.c:886
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Definition: vm_trace.c:47
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Definition: nkf.h:174
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Definition: ruby.h:2250
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Definition: vm_trace.c:1518
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Definition: vm_core.h:1888
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Definition: iseq.c:32
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#define RARRAY_LEN(a)
Definition: ruby.h:1070
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Definition: asm.h:115
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struct rb_hook_list_struct * hooks
Definition: method.h:153
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RUBY_EXTERN VALUE rb_cObject
Definition: ruby.h:2010
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uint32_t rb_event_flag_t
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Definition: rb_mjit_min_header-2.7.0.h:5456
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Definition: rb_mjit_min_header-2.7.0.h:6585
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struct rb_postponed_job_struct rb_postponed_job_t
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void rb_bug(const char *fmt,...)
Definition: error.c:634
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#define RUBY_EVENT_THREAD_BEGIN
Definition: ruby.h:2255
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Definition: ruby.h:530
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Definition: rb_mjit_min_header-2.7.0.h:5601
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@ VM_FRAME_MAGIC_BLOCK
Definition: vm_core.h:1164
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Definition: ruby.c:223
ST_CONTINUE
@ ST_CONTINUE
Definition: st.h:99
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Definition: vm_trace.c:35
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VALUE rb_iseq_parameters(const rb_iseq_t *iseq, int is_proc)
Definition: iseq.c:2939
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MJIT_FUNC_EXPORTED rb_control_frame_t * rb_vm_get_ruby_level_next_cfp(const rb_execution_context_t *ec, const rb_control_frame_t *cfp)
Definition: vm.c:553
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Definition: sprintf.c:1197
klass
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Definition: rb_mjit_min_header-2.7.0.h:13254
rb_trace_arg_struct::lineno
int lineno
Definition: vm_core.h:1887
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struct rb_tp_struct rb_tp_t
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Definition: vm_core.h:1882
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@ RUBY_EVENT_HOOK_FLAG_SAFE
Definition: debug.h:98
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struct rb_event_hook_struct rb_event_hook_t
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struct rb_event_hook_struct * hooks
Definition: vm_core.h:566
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Definition: vm_trace.c:694
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Definition: vm_core.h:1876
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const rb_iseq_t * iseq
Definition: vm_core.h:763
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int rb_ec_frame_method_id_and_class(const rb_execution_context_t *ec, ID *idp, ID *called_idp, VALUE *klassp)
Definition: vm.c:2200
rb_vm_control_frame_id_and_class
int rb_vm_control_frame_id_and_class(const rb_control_frame_t *cfp, ID *idp, ID *called_idp, VALUE *klassp)
Definition: vm.c:2184
RUBY_TYPED_FREE_IMMEDIATELY
#define RUBY_TYPED_FREE_IMMEDIATELY
Definition: ruby.h:1207
rb_vm_get_binding_creatable_next_cfp
rb_control_frame_t * rb_vm_get_binding_creatable_next_cfp(const rb_execution_context_t *ec, const rb_control_frame_t *cfp)
Definition: vm.c:541
call
return cc call
Definition: rb_mjit_min_header-2.7.0.h:13249
rb_hash_aset
VALUE rb_hash_aset(VALUE hash, VALUE key, VALUE val)
Definition: hash.c:2779
rb_tracearg_defined_class
VALUE rb_tracearg_defined_class(rb_trace_arg_t *trace_arg)
Definition: vm_trace.c:900
RUBY_EVENT_THREAD_END
#define RUBY_EVENT_THREAD_END
Definition: ruby.h:2256
NIL_P
#define NIL_P(v)
Definition: ruby.h:482
TAG_NONE
#define TAG_NONE
Definition: vm_core.h:197
RUBY_INTERNAL_EVENT_NEWOBJ
#define RUBY_INTERNAL_EVENT_NEWOBJ
Definition: ruby.h:2268
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rb_atomic_t interrupt_mask
Definition: vm_core.h:854
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void rb_objspace_set_event_hook(const rb_event_flag_t event)
Definition: gc.c:2080
argc
int argc
Definition: ruby.c:222
RUBY_EVENT_RAISE
#define RUBY_EVENT_RAISE
Definition: ruby.h:2249
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Definition: vm_core.h:577
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Definition: rb_mjit_min_header-2.7.0.h:8971
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#define free(x)
Definition: dln.c:52
RUBY_EVENT_B_CALL
#define RUBY_EVENT_B_CALL
Definition: ruby.h:2253
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const rb_method_entry_t * rb_method_entry_without_refinements(VALUE klass, ID id, VALUE *defined_class)
Definition: vm_method.c:925
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Definition: ruby.h:1148
rb_vm_struct
Definition: vm_core.h:576
xfree
#define xfree
Definition: defines.h:216
rb_mRubyVMFrozenCore
VALUE rb_mRubyVMFrozenCore
Definition: vm.c:367
rb_vm_pop_frame
MJIT_STATIC void rb_vm_pop_frame(rb_execution_context_t *ec)
Definition: rb_mjit_min_header-2.7.0.h:12308
RBASIC
#define RBASIC(obj)
Definition: ruby.h:1267
rb_tracearg_object
VALUE rb_tracearg_object(rb_trace_arg_t *trace_arg)
Definition: vm_trace.c:1008
rb_postponed_job_register_one
int rb_postponed_job_register_one(unsigned int flags, rb_postponed_job_func_t func, void *data)
Definition: vm_trace.c:1608
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Definition: method.h:163
rb_trace_arg_struct::event
rb_event_flag_t event
Definition: vm_core.h:1875
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void rb_gc_mark(VALUE ptr)
Definition: gc.c:5212
MJIT_FUNC_EXPORTED
#define MJIT_FUNC_EXPORTED
Definition: defines.h:396
rb_vm_struct::global_hooks
rb_hook_list_t global_hooks
Definition: vm_core.h:630
EC_PUSH_TAG
#define EC_PUSH_TAG(ec)
Definition: eval_intern.h:130
RUBY_EVENT_C_RETURN
#define RUBY_EVENT_C_RETURN
Definition: ruby.h:2248
rb_iseq_trace_set_all
void rb_iseq_trace_set_all(rb_event_flag_t turnon_events)
Definition: iseq.c:3315
Qtrue
#define Qtrue
Definition: ruby.h:468
rb_iseq_add_local_tracepoint_recursively
int rb_iseq_add_local_tracepoint_recursively(const rb_iseq_t *iseq, rb_event_flag_t turnon_events, VALUE tpval, unsigned int target_line)
Definition: iseq.c:3202
rb_obj_is_method
VALUE rb_obj_is_method(VALUE)
Definition: proc.c:1459
rb_event_hook_struct::target_line
unsigned int target_line
Definition: vm_trace.c:53
rb_tp_struct::target_th
rb_thread_t * target_th
Definition: vm_trace.c:695
rb_ec_reset_raised
int rb_ec_reset_raised(rb_execution_context_t *ec)
Definition: thread.c:2354
rb_tracearg_from_tracepoint
struct rb_trace_arg_struct * rb_tracearg_from_tracepoint(VALUE tpval)
Definition: vm_trace.c:786
rb_method_entry_struct
Definition: method.h:51
rb_thread_remove_event_hook_with_data
int rb_thread_remove_event_hook_with_data(VALUE thval, rb_event_hook_func_t func, VALUE data)
Definition: vm_trace.c:256
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Definition: vm_trace.c:692
RUBY_EVENT_RETURN
#define RUBY_EVENT_RETURN
Definition: ruby.h:2246
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int rb_atomic_t
Definition: ruby_atomic.h:124
FL_SINGLETON
#define FL_SINGLETON
Definition: ruby.h:1278
ATOMIC_CAS
#define ATOMIC_CAS(var, oldval, newval)
Definition: ruby_atomic.h:136
RUBY_EVENT_C_CALL
#define RUBY_EVENT_C_CALL
Definition: ruby.h:2247
rb_sym2str
VALUE rb_sym2str(VALUE)
Definition: symbol.c:784
rb_tp_struct::local_target_set
VALUE local_target_set
Definition: vm_trace.c:696
TRAP_INTERRUPT_MASK
@ TRAP_INTERRUPT_MASK
Definition: vm_core.h:1833
iseq
const rb_iseq_t * iseq
Definition: rb_mjit_min_header-2.7.0.h:13504
rb_thread_struct::self
VALUE self
Definition: vm_core.h:912
list_prepend_list
#define list_prepend_list(t, f)
Definition: rb_mjit_min_header-2.7.0.h:9114
rb_yield
VALUE rb_yield(VALUE)
Definition: vm_eval.c:1237
eval_intern.h
rb_ensure
VALUE rb_ensure(VALUE(*b_proc)(VALUE), VALUE data1, VALUE(*e_proc)(VALUE), VALUE data2)
An equivalent to ensure clause.
Definition: eval.c:1114
rb_vm_get_sourceline
int rb_vm_get_sourceline(const rb_control_frame_t *cfp)
Definition: vm_backtrace.c:68
builtin.h
Qnil
#define Qnil
Definition: ruby.h:469
rb_vm_struct::workqueue_lock
rb_nativethread_lock_t workqueue_lock
Definition: vm_core.h:643
rb_execution_context_struct::local_storage_recursive_hash_for_trace
VALUE local_storage_recursive_hash_for_trace
Definition: vm_core.h:862
rb_undef_alloc_func
void rb_undef_alloc_func(VALUE)
Definition: vm_method.c:722
RB_GC_GUARD
#define RB_GC_GUARD(v)
Definition: ruby.h:585
rb_thread_struct
Definition: vm_core.h:910
rb_execution_context_struct::local_storage_recursive_hash
VALUE local_storage_recursive_hash
Definition: vm_core.h:861
RETURN
#define RETURN(val)
Definition: dir.c:295
rb_tracepoint_enabled_p
VALUE rb_tracepoint_enabled_p(VALUE tpval)
Definition: vm_trace.c:1335
id__attached__
@ id__attached__
Definition: rb_mjit_min_header-2.7.0.h:8708
rb_tp_struct::proc
VALUE proc
Definition: vm_trace.c:702
rb_hook_list_struct::running
unsigned int running
Definition: vm_core.h:569
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Definition: vm_core.h:1881
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ruby_tag_type
Definition: vm_core.h:184
rb_postponed_job_struct::data
void * data
Definition: vm_trace.c:1533
RTEST
#define RTEST(v)
Definition: ruby.h:481
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ISEQ_TRACE_EVENTS
#define ISEQ_TRACE_EVENTS
Definition: iseq.h:75
RUBY_EVENT_LINE
#define RUBY_EVENT_LINE
Definition: ruby.h:2242
RUBY_EVENT_CLASS
#define RUBY_EVENT_CLASS
Definition: ruby.h:2243
cfp
rb_control_frame_t * cfp
Definition: rb_mjit_min_header-2.7.0.h:14544
rb_add_event_hook
void rb_add_event_hook(rb_event_hook_func_t func, rb_event_flag_t events, VALUE data)
Definition: vm_trace.c:157
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bool mjit_call_p
Definition: mjit_worker.c:180
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Definition: vm_core.h:843
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Definition: proc.c:837