-
Notifications
You must be signed in to change notification settings - Fork 609
/
system.cpp
1730 lines (1376 loc) · 46 KB
/
system.cpp
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
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#include <vector>
#include <errno.h>
#include <iostream>
#include <fstream>
#include <stdarg.h>
#include <string.h>
#include <sstream>
#include <signal.h>
#include "vm/config.h"
#ifdef RBX_WINDOWS
#include "windows_compat.h"
#else
#include <sys/resource.h>
#include <sys/wait.h>
#include <pwd.h>
#include <dlfcn.h>
#endif
#include <unistd.h>
#include "vm/call_frame.hpp"
#include "vm/helpers.hpp"
#include "vm/object_utils.hpp"
#include "vm/vm.hpp"
#include "compiled_file.hpp"
#include "objectmemory.hpp"
#include "global_cache.hpp"
#include "config_parser.hpp"
#include "arguments.hpp"
#include "builtin/array.hpp"
#include "builtin/exception.hpp"
#include "builtin/fixnum.hpp"
#include "builtin/string.hpp"
#include "builtin/bignum.hpp"
#include "builtin/class.hpp"
#include "builtin/compactlookuptable.hpp"
#include "builtin/location.hpp"
#include "builtin/lookuptable.hpp"
#include "builtin/symbol.hpp"
#include "builtin/tuple.hpp"
#include "builtin/float.hpp"
#include "builtin/methodtable.hpp"
#include "builtin/io.hpp"
#include "builtin/thread.hpp"
#include "builtin/channel.hpp"
#include "builtin/constantscope.hpp"
#include "builtin/block_environment.hpp"
#include "builtin/system.hpp"
#include "signal.hpp"
#include "lookup_data.hpp"
#include "configuration.hpp"
#include "inline_cache.hpp"
#include "agent.hpp"
#include "windows_compat.h"
#include "util/sha1.h"
#include "instruments/tooling.hpp"
#include "gc/walker.hpp"
#include "on_stack.hpp"
#ifdef ENABLE_LLVM
#include "llvm/state.hpp"
#include "llvm/jit_compiler.hpp"
#endif
#ifdef OS_X_10_5
#include <mach/mach.h>
#endif
#include "missing/setproctitle.h"
namespace rubinius {
void System::bootstrap_methods(STATE) {
GCTokenImpl gct;
System::attach_primitive(state, gct,
G(rubinius), true,
state->symbol("open_class"),
state->symbol("vm_open_class"));
System::attach_primitive(state, gct,
G(rubinius), true,
state->symbol("open_class_under"),
state->symbol("vm_open_class_under"));
System::attach_primitive(state, gct,
G(rubinius), true,
state->symbol("open_module"),
state->symbol("vm_open_module"));
System::attach_primitive(state, gct,
G(rubinius), true,
state->symbol("open_module_under"),
state->symbol("vm_open_module_under"));
System::attach_primitive(state, gct,
G(rubinius), true,
state->symbol("add_defn_method"),
state->symbol("vm_add_method"));
System::attach_primitive(state, gct,
G(rubinius), true,
state->symbol("attach_method"),
state->symbol("vm_attach_method"));
System::attach_primitive(state, gct,
as<Module>(G(rubinius)->get_const(state, "Type")), true,
state->symbol("object_singleton_class"),
state->symbol("vm_object_singleton_class"));
}
void System::attach_primitive(STATE, GCToken gct, Module* mod, bool meta,
Symbol* name, Symbol* prim)
{
MethodTable* tbl;
if(meta) {
tbl = mod->singleton_class(state)->method_table();
} else {
tbl = mod->method_table();
}
Executable* oc = Executable::allocate(state, cNil);
oc->primitive(state, prim);
oc->resolve_primitive(state);
tbl->store(state, gct, name, oc, G(sym_public));
}
/* Primitives */
//
// HACK: remove this when performance is better and compiled_file.rb
// unmarshal_data method works.
static std::stringstream stream;
Object* System::compiledfile_load(STATE, String* path,
Integer* signature, Integer* version)
{
std::ifstream file(path->c_str(state), std::ios::ate|std::ios::binary);
if(!file) {
return Primitives::failure();
}
std::streampos length = file.tellg();
std::vector<char> buffer(length);
file.seekg(0, std::ios::beg);
file.read(&buffer[0], length);
stream.clear();
stream.rdbuf()->pubsetbuf(&buffer[0], length);
CompiledFile* cf = CompiledFile::load(stream);
if(cf->magic != "!RBIX") {
delete cf;
return Primitives::failure();
}
uint64_t sig = signature->to_ulong_long();
if((sig > 0 && cf->signature != sig)
|| cf->version != version->to_native()) {
delete cf;
return Primitives::failure();
}
Object *body = cf->body(state);
delete cf;
return body;
}
Object* System::yield_gdb(STATE, Object* obj) {
obj->show(state);
Exception::assertion_error(state, "yield_gdb called and not caught");
return obj;
}
Object* System::vm_exec(STATE, String* path, Array* args,
CallFrame* calling_environment) {
const char* c_path = path->c_str_null_safe(state);
size_t argc = args->size();
char** argv = new char*[argc + 1];
/* execvp() requires a NULL as last element */
argv[argc] = NULL;
for(size_t i = 0; i < argc; i++) {
// POSIX guarantees that execvp does not modify the characters to which the argv
// pointers point, despite the argument not being declared as const char *const[].
argv[i] = const_cast<char*>(as<String>(args->get(state, i))->c_str_null_safe(state));
}
OnStack<2> os(state, path, args);
// Some system (darwin) don't let execvp work if there is more
// than one thread running.
{
// TODO: Make this guard unnecessary
GCIndependent guard(state, calling_environment);
state->shared().auxiliary_threads()->before_exec(state);
}
// TODO Need to stop and kill off any ruby threads!
// We haven't run into this because exec is almost always called
// after fork(), which pulls over just one thread anyway.
void* old_handlers[NSIG];
// Reset all signal handlers to the defaults, so any we setup in Rubinius
// won't leak through. We need to use sigaction() here since signal()
// provides no control over SA_RESTART and can use the wrong value causing
// blocking I/O methods to become uninterruptable.
for(int i = 1; i < NSIG; i++) {
struct sigaction action;
struct sigaction old_action;
action.sa_handler = SIG_DFL;
action.sa_flags = 0;
sigfillset(&action.sa_mask);
sigaction(i, &action, &old_action);
old_handlers[i] = (void*)old_action.sa_handler;
}
(void)::execvp(c_path, argv);
int erno = errno;
// Hmmm, execvp failed, we need to recover here.
for(int i = 1; i < NSIG; i++) {
struct sigaction action;
action.sa_handler = (void(*)(int))old_handlers[i];
action.sa_flags = 0;
sigfillset(&action.sa_mask);
sigaction(i, &action, NULL);
}
delete[] argv;
state->shared().auxiliary_threads()->after_exec(state);
/* execvp() returning means it failed. */
Exception::errno_error(state, "execvp(2) failed", erno);
return NULL;
}
Object* System::vm_replace(STATE, String* str,
CallFrame* calling_environment)
{
#ifdef RBX_WINDOWS
// TODO: Windows
return Primitives::failure();
#else
const char* c_str = str->c_str_null_safe(state);
int fds[2];
OnStack<1> os(state, str);
if(pipe(fds) != 0) return Primitives::failure();
{
// TODO: Make this guard unnecessary
GCIndependent guard(state, calling_environment);
state->shared().auxiliary_threads()->before_fork(state);
}
pid_t pid = ::fork();
// error
if(pid == -1) {
close(fds[0]);
close(fds[1]);
return Primitives::failure();
}
// child
if(pid == 0) {
close(fds[0]);
dup2(fds[1], STDOUT_FILENO);
close(fds[1]);
// detect and decide to use sh or not.
char* s = const_cast<char*>(c_str);
bool use_sh = false;
for(;*s;s++) {
if(*s != ' ' && !ISALPHA(*s) && strchr("*?{}[]<>()~&|\\$;'`\"\n",*s)) {
use_sh = true;
break;
}
}
if(use_sh) {
execl("/bin/sh", "sh", "-c", c_str, (char*)0);
} else {
size_t c_size = str->byte_size();
size_t max_spaces = (c_size / 2) + 2;
char** args = new char*[max_spaces];
// Now put nulls for spaces into c_str and assign each bit
// to args to create the array of char*s that execv wants.
s = const_cast<char*>(c_str);
const char* s_end = c_str + c_size;
int idx = 0;
for(;;) {
// turn the next group of spaces into nulls.
while(s < s_end && *s == ' ') {
*s = 0;
s++;
}
// Hit the end, bail.
if(s == s_end) break;
// Write the address of the next chunk here.
args[idx++] = s;
// Skip to the next space
while(s < s_end && *s != ' ') s++;
}
args[idx] = 0;
// If we added anything, then exec, otherwise fall through and fail.
if(idx > 0) execvp(args[0], args);
}
// bad news, shouldn't be here.
std::cerr << "execvp failed: " << strerror(errno) << std::endl;
exit(1);
} else {
state->shared().auxiliary_threads()->after_fork_parent(state);
}
close(fds[1]);
std::string buf;
for(;;) {
ssize_t bytes = 0;
char raw_buf[1024];
{
GCIndependent guard(state, calling_environment);
bytes = read(fds[0], raw_buf, 1023);
}
if(bytes < 0) {
switch(errno) {
case EAGAIN:
case EINTR:
if(!state->check_async(calling_environment)) {
close(fds[0]);
return NULL;
}
continue;
default:
close(fds[0]);
Exception::errno_error(state, "reading child data", errno, "read(2)");
}
}
if(bytes == 0) {
break;
}
buf.append(raw_buf, bytes);
}
close(fds[0]);
return Tuple::from(state, 2, Fixnum::from(pid),
String::create(state, buf.c_str(), buf.size()));
#endif // RBX_WINDOWS
}
Object* System::vm_wait_pid(STATE, Fixnum* pid_obj, Object* no_hang,
CallFrame* calling_environment)
{
#ifdef RBX_WINDOWS
// TODO: Windows
return Primitives::failure();
#else
pid_t input_pid = pid_obj->to_native();
int options = 0;
int status;
pid_t pid;
if(no_hang == cTrue) {
options |= WNOHANG;
}
typedef void (*rbx_sighandler_t)(int);
rbx_sighandler_t hup_func;
rbx_sighandler_t quit_func;
rbx_sighandler_t int_func;
retry:
hup_func = signal(SIGHUP, SIG_IGN);
quit_func = signal(SIGQUIT, SIG_IGN);
int_func = signal(SIGINT, SIG_IGN);
{
GCIndependent guard(state, calling_environment);
pid = waitpid(input_pid, &status, options);
}
signal(SIGHUP, hup_func);
signal(SIGQUIT, quit_func);
signal(SIGINT, int_func);
if(pid == -1) {
if(errno == ECHILD) return cFalse;
if(errno == EINTR) {
if(!state->check_async(calling_environment)) return NULL;
goto retry;
}
// TODO handle other errnos?
return cFalse;
}
if(no_hang == cTrue && pid == 0) {
return cNil;
}
Object* output = cNil;
Object* termsig = cNil;
Object* stopsig = cNil;
if(WIFEXITED(status)) {
output = Fixnum::from(WEXITSTATUS(status));
} else if(WIFSIGNALED(status)) {
termsig = Fixnum::from(WTERMSIG(status));
} else if(WIFSTOPPED(status)){
stopsig = Fixnum::from(WSTOPSIG(status));
}
return Tuple::from(state, 4, output, termsig, stopsig, Fixnum::from(pid));
#endif // RBX_WINDOWS
}
Object* System::vm_exit(STATE, Fixnum* code) {
state->vm()->thread_state()->raise_exit(code);
return NULL;
}
Fixnum* System::vm_fork(STATE, GCToken gct, CallFrame* calling_environment)
{
#ifdef RBX_WINDOWS
// TODO: Windows
return force_as<Fixnum>(Primitives::failure());
#else
int result = 0;
{
// TODO: Make this guard unnecessary
GCIndependent guard(state, calling_environment);
state->shared().auxiliary_threads()->before_fork(state);
}
/*
* We have to bring all the threads to a safe point before we can
* fork the process so any internal locks are unlocked before we fork
*/
StopTheWorld stw(state, gct, calling_environment);
// ok, now fork!
result = ::fork();
// We're in the child...
if(result == 0) {
/* @todo any other re-initialisation needed? */
state->vm()->thread->init_lock();
state->shared().reinit(state);
state->shared().om->on_fork(state);
state->shared().auxiliary_threads()->after_fork_child(state);
} else {
{
// TODO: Make this guard unnecessary
GCIndependent guard(state, calling_environment);
state->shared().auxiliary_threads()->after_fork_parent(state);
}
}
if(result == -1) {
Exception::errno_error(state, "fork(2) failed");
return NULL;
}
return Fixnum::from(result);
#endif
}
Object* System::vm_gc_start(STATE, GCToken gct, Object* force, CallFrame* call_frame) {
// force is set if this is being called by the kernel (for instance
// in File#ininitialize). If we decided to ignore some GC.start calls
// by usercode trying to be clever, we can use force to know that we
// should NOT ignore it.
if(CBOOL(force) || state->shared().config.gc_honor_start) {
state->memory()->collect_young_now = true;
state->memory()->collect_mature_now = true;
state->vm()->collect_maybe(gct, call_frame);
}
return cNil;
}
Integer* System::vm_gc_count(STATE) {
return Integer::from(state, state->memory()->gc_stats.young_collection_count.read() +
state->memory()->gc_stats.full_collection_count.read());
}
Integer* System::vm_gc_size(STATE) {
return Integer::from(state, state->shared().config.gc_bytes * 2 +
state->memory()->immix_usage() +
state->memory()->loe_usage() +
state->memory()->code_usage() +
state->shared().symbols.bytes_used());
}
Integer* System::vm_gc_time(STATE) {
return Integer::from(state, state->memory()->gc_stats.total_young_collection_time.read() +
state->memory()->gc_stats.total_full_collection_time.read());
}
Object* System::vm_get_config_item(STATE, String* var) {
ConfigParser::Entry* ent = state->shared().user_variables.find(var->c_str(state));
if(!ent) return cNil;
if(ent->is_number()) {
return Bignum::from_string(state, ent->value.c_str(), 10);
} else if(ent->is_true()) {
return cTrue;
}
return String::create(state, ent->value.c_str(), ent->value.size());
}
Object* System::vm_get_config_section(STATE, String* section) {
ConfigParser::EntryList* list;
list = state->shared().user_variables.get_section(
reinterpret_cast<char*>(section->byte_address()));
Array* ary = Array::create(state, list->size());
for(size_t i = 0; i < list->size(); i++) {
std::string variable = list->at(i)->variable;
std::string value = list->at(i)->value;
String* var = String::create(state, variable.c_str(), variable.size());
String* val = String::create(state, value.c_str(), value.size());
ary->set(state, i, Tuple::from(state, 2, var, val));
}
delete list;
return ary;
}
Object* System::vm_reset_method_cache(STATE, Symbol* name) {
// 1. clear the global cache
state->vm()->global_cache()->clear(state, name);
state->shared().ic_registry()->clear(state, name);
return name;
}
/* @todo Could possibly capture the system backtrace at this
* point. --rue
*/
Array* System::vm_backtrace(STATE, Fixnum* skip, Object* inc_vars,
CallFrame* calling_environment) {
CallFrame* call_frame = calling_environment;
bool include_vars = CBOOL(inc_vars);
for(native_int i = skip->to_native(); call_frame && i > 0; --i) {
call_frame = call_frame->previous;
}
return Location::from_call_stack(state, call_frame, include_vars);
}
Array* System::vm_mri_backtrace(STATE, Fixnum* skip,
CallFrame* calling_environment) {
CallFrame* call_frame = calling_environment;
for(native_int i = skip->to_native(); call_frame && i > 0; --i) {
call_frame = call_frame->previous;
}
return Location::mri_backtrace(state, call_frame);
}
Object* System::vm_show_backtrace(STATE, CallFrame* calling_environment) {
calling_environment->print_backtrace(state);
return cNil;
}
Object* System::vm_tooling_available_p(STATE) {
#ifdef RBX_PROFILER
return state->shared().tool_broker()->available(state) ? cTrue : cFalse;
#else
return cFalse;
#endif
}
Object* System::vm_tooling_active_p(STATE) {
return state->vm()->tooling() ? cTrue : cFalse;
}
Object* System::vm_tooling_enable(STATE) {
state->shared().tool_broker()->enable(state);
return cTrue;
}
Object* System::vm_tooling_disable(STATE) {
return state->shared().tool_broker()->results(state);
}
Object* System::vm_load_tool(STATE, String* str) {
std::string path = std::string(str->c_str(state)) + ".";
#ifdef _WIN32
path += "dll";
#else
#ifdef __APPLE_CC__
path += "bundle";
#else
path += "so";
#endif
#endif
void* handle = dlopen(path.c_str(), RTLD_NOW);
if(!handle) {
path = std::string(RBX_LIB_PATH) + "/" + path;
handle = dlopen(path.c_str(), RTLD_NOW);
if(!handle) {
return Tuple::from(state, 2, cFalse, String::create(state, dlerror()));
}
}
void* sym = dlsym(handle, "Tool_Init");
if(!sym) {
dlclose(handle);
return Tuple::from(state, 2, cFalse, String::create(state, dlerror()));
} else {
typedef int (*init_func)(rbxti::Env* env);
init_func init = (init_func)sym;
if(!init(state->vm()->tooling_env())) {
dlclose(handle);
return Tuple::from(state, 2, cFalse, String::create(state, path.c_str(), path.size()));
}
}
return Tuple::from(state, 1, cTrue);
}
Object* System::vm_write_error(STATE, String* str) {
std::cerr << str->c_str(state) << std::endl;
return cNil;
}
Object* System::vm_jit_info(STATE) {
if(state->shared().config.jit_disabled) return cNil;
#ifdef ENABLE_LLVM
LLVMState* ls = LLVMState::get(state);
Array* ary = Array::create(state, 5);
ary->set(state, 0, Integer::from(state, ls->jitted_methods()));
ary->set(state, 1, Integer::from(state, ls->code_bytes()));
ary->set(state, 2, Integer::from(state, ls->time_spent));
ary->set(state, 3, Integer::from(state, ls->accessors_inlined()));
ary->set(state, 4, Integer::from(state, ls->uncommons_taken()));
return ary;
#else
return cNil;
#endif
}
Object* System::vm_watch_signal(STATE, Fixnum* sig, Object* ignored) {
SignalHandler* h = state->shared().signal_handler();
if(h) {
native_int i = sig->to_native();
if(i < 0) {
h->add_signal(state, -i, SignalHandler::eDefault);
} else if(i > 0) {
h->add_signal(state, i, ignored == cTrue ? SignalHandler::eIgnore : SignalHandler::eCustom);
}
return cTrue;
} else {
return cFalse;
}
}
Object* System::vm_time(STATE) {
return Integer::from(state, time(0));
}
#define NANOSECONDS 1000000000
Object* System::vm_sleep(STATE, GCToken gct, Object* duration,
CallFrame* calling_environment)
{
struct timespec ts = {0,0};
bool use_timed_wait = true;
if(Fixnum* fix = try_as<Fixnum>(duration)) {
ts.tv_sec = fix->to_native();
} else if(Float* flt = try_as<Float>(duration)) {
uint64_t nano = (uint64_t)(flt->val * NANOSECONDS);
ts.tv_sec = (time_t)(nano / NANOSECONDS);
ts.tv_nsec = (long)(nano % NANOSECONDS);
} else if(duration == G(undefined)) {
use_timed_wait = false;
} else {
return Primitives::failure();
}
time_t start = time(0);
if(use_timed_wait) {
struct timeval tv = {0,0};
gettimeofday(&tv, 0);
uint64_t nano = ts.tv_nsec + tv.tv_usec * 1000;
ts.tv_sec += tv.tv_sec + nano / NANOSECONDS;
ts.tv_nsec = nano % NANOSECONDS;
if(!state->park_timed(gct, calling_environment, &ts)) return NULL;
} else {
if(!state->park(gct, calling_environment)) return NULL;
}
if(!state->check_async(calling_environment)) return NULL;
return Fixnum::from(time(0) - start);
}
Object* System::vm_check_interrupts(STATE, CallFrame* calling_environment) {
if(state->check_async(calling_environment)) {
return cNil;
} else {
return NULL;
}
}
static inline double tv_to_dbl(struct timeval* tv) {
return (double)tv->tv_sec + ((double)tv->tv_usec / 1000000.0);
}
static inline double to_dbl(long sec, long msec) {
return (double)sec + ((double)msec / 1000000.0);
}
Array* System::vm_times(STATE) {
#ifdef RBX_WINDOWS
// TODO: Windows
return force_as<Array>(Primitives::failure());
#else
struct rusage buf;
Array* ary = Array::create(state, 4);
getrusage(RUSAGE_SELF, &buf);
ary->set(state, 0, Float::create(state, tv_to_dbl(&buf.ru_utime)));
ary->set(state, 1, Float::create(state, tv_to_dbl(&buf.ru_stime)));
getrusage(RUSAGE_CHILDREN, &buf);
ary->set(state, 2, Float::create(state, tv_to_dbl(&buf.ru_utime)));
ary->set(state, 3, Float::create(state, tv_to_dbl(&buf.ru_stime)));
// Get Thread info too
#if defined(OS_X_10_5)
mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
thread_basic_info_data_t info;
kern_return_t err;
mach_port_t port = mach_thread_self();
err = thread_info(port, THREAD_BASIC_INFO, (thread_info_t)&info, &count);
mach_port_deallocate(mach_task_self(), port);
if(err == KERN_SUCCESS) {
ary->set(state, 4, Float::create(state, to_dbl(
info.user_time.seconds, info.user_time.microseconds)));
ary->set(state, 5, Float::create(state, to_dbl(
info.system_time.seconds, info.system_time.microseconds)));
} else {
ary->set(state, 4, ary->get(state, 0));
ary->set(state, 5, ary->get(state, 1));
}
#elif defined(RUSAGE_THREAD)
getrusage(RUSAGE_THREAD, &buf);
ary->set(state, 4, Float::create(state, tv_to_dbl(&buf.ru_utime)));
ary->set(state, 5, Float::create(state, tv_to_dbl(&buf.ru_stime)));
#elif defined(_WIN32)
FILETIME unused, unused2;
FILETIME sys, usr;
GetThreadTimes(GetCurrentThread(), &unused, &unused2, &sys, &user);
ary->set(state, 4, Float::create(state, ((double)usr) / 10000));
ary->set(state, 5, Float::create(state, ((double)sys) / 10000));
#else
ary->set(state, 4, ary->get(state, 0));
ary->set(state, 5, ary->get(state, 1));
#endif
return ary;
#endif
}
Class* System::vm_open_class(STATE, Symbol* name, Object* sup,
ConstantScope* scope)
{
Module* under;
if(scope->nil_p()) {
under = G(object);
} else {
under = scope->module();
}
return vm_open_class_under(state, name, sup, under);
}
Class* System::vm_open_class_under(STATE, Symbol* name, Object* super,
Module* under)
{
bool found = false;
Object* obj = under->get_const(state, name, &found);
if(found) {
Class* cls = as<Class>(obj);
if(super->nil_p()) return cls;
if(cls->true_superclass(state) != super) {
std::ostringstream message;
message << "Superclass mismatch: given "
<< as<Module>(super)->debug_str(state)
<< " but previously set to "
<< cls->true_superclass(state)->debug_str(state);
Exception* exc =
Exception::make_type_error(state, Class::type, super,
message.str().c_str());
// exc->locations(state, System::vm_backtrace(state,
// Fixnum::from(0), call_frame));
state->raise_exception(exc);
return NULL;
}
return cls;
}
// Create the class.
if(super->nil_p()) super = G(object);
Class* cls = Class::create(state, as<Class>(super));
cls->set_name(state, name, under);
under->set_const(state, name, cls);
return cls;
}
Module* System::vm_open_module(STATE, Symbol* name, ConstantScope* scope) {
Module* under = G(object);
if(!scope->nil_p()) {
under = scope->module();
}
return vm_open_module_under(state, name, under);
}
Module* System::vm_open_module_under(STATE, Symbol* name, Module* under) {
bool found;
Object* obj = under->get_const(state, name, &found);
if(found) return as<Module>(obj);
Module* module = Module::create(state);
module->set_name(state, name, under);
under->set_const(state, name, module);
return module;
}
static Tuple* find_method(STATE, Object* recv, Symbol* name, Symbol* min_visibility) {
LookupData lookup(recv, recv->lookup_begin(state), min_visibility);
Dispatch dis(name);
if(!GlobalCache::resolve(state, name, dis, lookup)) {
return nil<Tuple>();
}
return Tuple::from(state, 2, dis.method, dis.module);
}
Tuple* System::vm_find_method(STATE, Object* recv, Symbol* name) {
return find_method(state, recv, name, G(sym_private));
}
Tuple* System::vm_find_public_method(STATE, Object* recv, Symbol* name) {
return find_method(state, recv, name, G(sym_public));
}
Object* System::vm_add_method(STATE, GCToken gct, Symbol* name,
CompiledCode* method,
ConstantScope* scope, Object* vis)
{
Module* mod = scope->for_method_definition();
method->scope(state, scope);
method->serial(state, Fixnum::from(0));
OnStack<4> os(state, mod, method, scope, vis);
mod->add_method(state, gct, name, method);
if(Class* cls = try_as<Class>(mod)) {
OnStack<1> o2(state, cls);
if(!method->internalize(state, gct)) {
Exception::argument_error(state, "invalid bytecode method");
return 0;
}
object_type type = (object_type)cls->instance_type()->to_native();
TypeInfo* ti = state->memory()->type_info[type];
if(ti) {
method->specialize(state, ti);
}
}
bool add_ivars = false;
if(Class* cls = try_as<Class>(mod)) {
add_ivars = !kind_of<SingletonClass>(cls) &&
cls->type_info()->type == Object::type;
} else {
add_ivars = true;
}
if(add_ivars) {
Array* ary = mod->seen_ivars();
if(ary->nil_p()) {
ary = Array::create(state, 5);
mod->seen_ivars(state, ary);
}
Tuple* lits = method->literals();
for(native_int i = 0; i < lits->num_fields(); i++) {
if(Symbol* sym = try_as<Symbol>(lits->at(state, i))) {
if(CBOOL(sym->is_ivar_p(state))) {
if(!ary->includes_p(state, sym)) ary->append(state, sym);
}
}
}
}
vm_reset_method_cache(state, name);
return method;
}
Object* System::vm_attach_method(STATE, GCToken gct, Symbol* name,