5 typedef void (*c_to_factor_func_type)(cell quot);
6 typedef void (*unwind_native_frames_func_type)(cell quot, cell to);
7 typedef cell (*get_fpu_state_func_type)();
8 typedef void (*set_fpu_state_func_type)(cell state);
10 struct growable_array;
16 // THESE FIELDS ARE ACCESSED DIRECTLY FROM FACTOR. See:
18 // basis/compiler/constants/constants.factor
23 // Spare context -- for callbacks
26 // New objects are allocated here, use the data->nursery reference
27 // instead from c++ code.
28 bump_allocator nursery;
30 // Add this to a shifted address to compute write barrier offsets
34 // cdecl signal handler address, used by signal handler subprimitives
35 cell signal_handler_addr;
37 // are we handling a memory error? used to detect double faults
40 // Various special objects, accessed by special-object and
41 // set-special-object primitives
42 cell special_objects[special_object_count];
44 // THESE FIELDS ARE ACCESSED DIRECTLY FROM FACTOR.
48 // Handle to the main thread we run in
51 // Data stack and retain stack sizes
52 cell datastack_size, retainstack_size, callstack_size;
54 // Stack of callback IDs
55 std::vector<int> callback_ids;
60 // List of callback function descriptors for PPC
61 std::list<void**> function_descriptors;
63 // Pooling unused contexts to make context allocation cheaper
64 std::list<context*> unused_contexts;
66 // Active contexts, for tracing by the GC
67 std::set<context*> active_contexts;
69 // External entry points
70 c_to_factor_func_type c_to_factor_func;
72 // Is profiling enabled?
73 volatile cell sampling_profiler_p;
74 fixnum samples_per_second;
76 // Global variables used to pass fault handler state from signal handler
78 bool signal_resumable;
80 cell signal_fault_addr;
82 unsigned int signal_fpu_status;
84 // Pipe used to notify Factor multiplexer of signals
85 int signal_pipe_input, signal_pipe_output;
87 // State kept by the sampling profiler
88 std::vector<profiling_sample> samples;
89 std::vector<cell> sample_callstacks;
90 volatile profiling_sample_count sample_counts;
92 // GC is off during heap walking
101 // Pinned callback stubs
102 callback_heap* callbacks;
104 // Only set if we're performing a GC
105 gc_state* current_gc;
106 volatile cell current_gc_p;
108 // Set if we're in the jit
109 volatile fixnum current_jit_count;
111 // Mark stack used for mark & sweep GC
112 std::vector<cell> mark_stack;
114 // If not NULL, we push GC events here
115 std::vector<gc_event>* gc_events;
117 // If a runtime function needs to call another function which potentially
118 // allocates memory, it must wrap any references to the data and code
119 // heaps with data_root and code_root smart pointers, which register
120 // themselves here. See data_roots.hpp and code_roots.hpp
122 std::vector<cell*> data_roots;
123 std::vector<code_root*> code_roots;
127 bool fep_help_was_shown;
131 // Method dispatch statistics
132 dispatch_statistics dispatch_stats;
134 // Number of entries in a polymorphic inline cache
137 // Incrementing object counter for identity hashing
140 // Sanity check to ensure that monotonic counter doesn't decrease
141 uint64_t last_nano_count;
143 // Stack for signal handlers, only used on Unix
144 segment* signal_callstack_seg;
146 // Are we already handling a fault? Used to catch double memory faults
147 static bool fatal_erroring_p;
149 // Two fep_p variants, one might be redundant.
150 volatile cell safepoint_fep_p;
152 // Allow Ctrl-Break a busy loop in the Listener, only used on Windows
153 volatile bool stop_on_ctrl_break;
156 context* new_context();
157 void init_context(context* ctx);
158 void delete_context();
159 cell begin_callback(cell quot);
161 void primitive_current_callback();
162 void primitive_context_object();
163 void primitive_context_object_for();
164 void primitive_set_context_object();
165 cell stack_to_array(cell bottom, cell top, vm_error_type error);
166 cell datastack_to_array(context* ctx);
167 void primitive_datastack_for();
168 cell retainstack_to_array(context* ctx);
169 void primitive_retainstack_for();
170 void primitive_set_datastack();
171 void primitive_set_retainstack();
172 void primitive_check_datastack();
173 void primitive_load_locals();
176 void primitive_exit();
177 void primitive_nano_count();
178 void primitive_sleep();
179 void primitive_set_slot();
182 void primitive_special_object();
183 void primitive_set_special_object();
184 void primitive_identity_hashcode();
185 void primitive_compute_identity_hashcode();
186 void primitive_clone();
187 void primitive_become();
190 void record_sample(bool prolog_p);
191 void start_sampling_profiler(fixnum rate);
192 void end_sampling_profiler();
193 void set_sampling_profiler(fixnum rate);
194 void primitive_sampling_profiler();
195 void primitive_get_samples();
198 void general_error(vm_error_type error, cell arg1, cell arg2);
199 void type_error(cell type, cell tagged);
200 void not_implemented_error();
201 void set_memory_protection_error(cell fault_addr, cell fault_pc);
202 void divide_by_zero_error();
203 void primitive_unimplemented();
206 int bignum_equal_p(bignum* x, bignum* y);
207 enum bignum_comparison bignum_compare(bignum* x, bignum* y);
208 bignum* bignum_add(bignum* x, bignum* y);
209 bignum* bignum_subtract(bignum* x, bignum* y);
210 bignum* bignum_square(bignum* x_);
211 bignum* bignum_multiply(bignum* x, bignum* y);
212 void bignum_divide(bignum* numerator, bignum* denominator, bignum** quotient,
214 bignum* bignum_quotient(bignum* numerator, bignum* denominator);
215 bignum* bignum_remainder(bignum* numerator, bignum* denominator);
216 fixnum bignum_to_fixnum_strict(bignum* bn);
217 bignum* double_to_bignum(double x);
218 int bignum_equal_p_unsigned(bignum* x, bignum* y);
219 enum bignum_comparison bignum_compare_unsigned(bignum* x, bignum* y);
220 bignum* bignum_add_unsigned(bignum* x_, bignum* y_, int negative_p);
221 bignum* bignum_subtract_unsigned(bignum* x_, bignum* y_);
222 bignum* bignum_multiply_unsigned(bignum* x_, bignum* y_, int negative_p);
223 bignum* bignum_multiply_unsigned_small_factor(bignum* x, bignum_digit_type y,
225 void bignum_destructive_add(bignum* bn, bignum_digit_type n);
226 void bignum_destructive_scale_up(bignum* bn, bignum_digit_type factor);
227 void bignum_divide_unsigned_large_denominator(
228 bignum* numerator_, bignum* denominator_, bignum** quotient,
229 bignum** remainder, int q_negative_p, int r_negative_p);
230 void bignum_divide_unsigned_normalized(bignum* u, bignum* v, bignum* q);
231 bignum_digit_type bignum_divide_subtract(bignum_digit_type* v_start,
232 bignum_digit_type* v_end,
233 bignum_digit_type guess,
234 bignum_digit_type* u_start);
235 void bignum_divide_unsigned_medium_denominator(
236 bignum* numerator_, bignum_digit_type denominator, bignum** quotient,
237 bignum** remainder, int q_negative_p, int r_negative_p);
238 void bignum_destructive_normalization(bignum* source, bignum* target,
240 void bignum_destructive_unnormalization(bignum* bn, int shift_right);
241 bignum_digit_type bignum_digit_divide(
242 bignum_digit_type uh, bignum_digit_type ul, bignum_digit_type v,
243 bignum_digit_type* q); // return value
244 bignum_digit_type bignum_digit_divide_subtract(bignum_digit_type v1,
245 bignum_digit_type v2,
246 bignum_digit_type guess,
247 bignum_digit_type* u);
248 void bignum_divide_unsigned_small_denominator(
249 bignum* numerator_, bignum_digit_type denominator, bignum** quotient,
250 bignum** remainder, int q_negative_p, int r_negative_p);
251 bignum_digit_type bignum_destructive_scale_down(
252 bignum* bn, bignum_digit_type denominator);
253 bignum* bignum_remainder_unsigned_small_denominator(bignum* n,
256 bignum* bignum_digit_to_bignum(bignum_digit_type digit, int negative_p);
257 bignum* allot_bignum(bignum_length_type length, int negative_p);
258 bignum* allot_bignum_zeroed(bignum_length_type length, int negative_p);
259 bignum* bignum_shorten_length(bignum* bn, bignum_length_type length);
260 bignum* bignum_trim(bignum* bn);
261 bignum* bignum_new_sign(bignum* x_, int negative_p);
262 bignum* bignum_maybe_new_sign(bignum* x_, int negative_p);
263 void bignum_destructive_copy(bignum* source, bignum* target);
264 bignum* bignum_bitwise_not(bignum* x_);
265 bignum* bignum_arithmetic_shift(bignum* arg1, fixnum n);
266 bignum* bignum_bitwise_and(bignum* arg1, bignum* arg2);
267 bignum* bignum_bitwise_ior(bignum* arg1, bignum* arg2);
268 bignum* bignum_bitwise_xor(bignum* arg1, bignum* arg2);
269 bignum* bignum_magnitude_ash(bignum* arg1_, fixnum n);
270 bignum* bignum_pospos_bitwise_op(int op, bignum* arg1_, bignum* arg2_);
271 bignum* bignum_posneg_bitwise_op(int op, bignum* arg1_, bignum* arg2_);
272 bignum* bignum_negneg_bitwise_op(int op, bignum* arg1_, bignum* arg2_);
273 void bignum_negate_magnitude(bignum* arg);
274 bignum* bignum_integer_length(bignum* x_);
275 int bignum_logbitp(int shift, bignum* arg);
276 int bignum_unsigned_logbitp(int shift, bignum* bn);
277 bignum* bignum_gcd(bignum* a_, bignum* b_);
280 void set_data_heap(data_heap* data_);
281 void primitive_size();
282 data_heap_room data_room();
283 void primitive_data_room();
284 cell instances(cell type);
285 void primitive_all_instances();
287 template <typename Generation, typename Iterator>
288 inline void each_object(Generation* gen, Iterator& iterator) {
289 cell obj = gen->first_object();
291 iterator((object*)obj);
292 obj = gen->next_object_after(obj);
296 template <typename Iterator> inline void each_object(Iterator& iterator) {
298 // The nursery can't be iterated because there may be gaps between
299 // the objects (see factor_vm::reallot_array) so we require it to
301 FACTOR_ASSERT(data->nursery->occupied_space() == 0);
304 each_object(data->tenured, iterator);
305 each_object(data->aging, iterator);
309 template <typename Iterator>
310 inline void each_object_each_slot(Iterator& iterator) {
311 auto each_object_func = [&](object* obj) {
312 auto each_slot_func = [&](cell* slot) {
315 obj->each_slot(each_slot_func);
317 each_object(each_object_func);
320 // the write barrier must be called any time we are potentially storing a
321 // pointer from an older generation to a younger one
322 inline void write_barrier(cell* slot_ptr) {
323 *(unsigned char*)(cards_offset + ((cell)slot_ptr >> card_bits)) = card_mark_mask;
324 *(unsigned char*)(decks_offset + ((cell)slot_ptr >> deck_bits)) = card_mark_mask;
327 inline void write_barrier(object* obj, cell size) {
328 cell start = (cell)obj & (~card_size + 1);
329 cell end = ((cell)obj + size + card_size - 1) & (~card_size + 1);
331 for (cell offset = start; offset < end; offset += card_size)
332 write_barrier((cell*)offset);
336 void check_data_heap();
339 void set_current_gc_op(gc_op op);
340 void start_gc_again();
341 void collect_nursery();
342 void collect_aging();
343 void collect_to_tenured();
344 void update_code_roots_for_compaction();
345 void collect_mark_impl();
346 void collect_sweep_impl();
348 void collect_compact_impl();
349 void collect_compact();
350 void collect_growing_data_heap(cell requested_size);
351 void gc(gc_op op, cell requested_size);
352 void primitive_minor_gc();
353 void primitive_full_gc();
354 void primitive_compact_gc();
355 void primitive_enable_gc_events();
356 void primitive_disable_gc_events();
357 object* allot_object(cell type, cell size);
358 object* allot_large_object(cell type, cell size);
361 template <typename Type> Type* allot(cell size) {
362 return (Type*)allot_object(Type::type_number, size);
366 template <typename Array> Array* allot_uninitialized_array(cell capacity);
367 template <typename Array>
368 bool reallot_array_in_place_p(Array* array, cell capacity);
369 template <typename Array> Array* reallot_array(Array* array_, cell capacity);
372 void print_chars(ostream& out, string* str);
373 void print_word(ostream& out, word* word, cell nesting);
374 void print_factor_string(ostream& out, string* str);
375 void print_array(ostream& out, array* array, cell nesting);
376 void print_byte_array(ostream& out, byte_array* array, cell nesting);
377 void print_tuple(ostream& out, tuple* tuple, cell nesting);
378 void print_alien(ostream& out, alien* alien, cell nesting);
379 void print_nested_obj(ostream& out, cell obj, fixnum nesting);
380 void print_obj(ostream& out, cell obj);
381 void print_objects(ostream& out, cell* start, cell* end);
382 void print_datastack(ostream& out);
383 void print_retainstack(ostream& out);
384 void print_callstack(ostream& out);
385 void print_callstack_object(ostream& out, callstack* obj);
386 void dump_cell(ostream& out, cell x);
387 void dump_memory(ostream& out, cell from, cell to);
388 void dump_memory_layout(ostream& out);
389 void dump_objects(ostream& out, cell type);
390 void dump_edges(ostream& out);
391 void find_data_references(ostream& out, cell look_for_);
392 void dump_code_heap(ostream& out);
393 void factorbug_usage(bool advanced_p);
395 void primitive_die();
396 void primitive_enable_ctrl_break();
397 void primitive_disable_ctrl_break();
400 inline void set_array_nth(array* array, cell slot, cell value);
401 array* allot_array(cell capacity, cell fill_);
402 void primitive_array();
403 cell allot_array_4(cell v1_, cell v2_, cell v3_, cell v4_);
404 void primitive_resize_array();
405 cell std_vector_to_array(std::vector<cell>& elements);
408 string* allot_string_internal(cell capacity);
409 void fill_string(string* str_, cell start, cell capacity, cell fill);
410 string* allot_string(cell capacity, cell fill);
411 void primitive_string();
412 bool reallot_string_in_place_p(string* str, cell capacity);
413 string* reallot_string(string* str_, cell capacity);
414 void primitive_resize_string();
415 void primitive_set_string_nth_fast();
418 cell tag_boolean(cell untagged) {
419 return untagged ? special_objects[OBJ_CANONICAL_TRUE] : false_object;
423 byte_array* allot_byte_array(cell size);
424 void primitive_byte_array();
425 void primitive_uninitialized_byte_array();
426 void primitive_resize_byte_array();
428 template <typename Type> byte_array* byte_array_from_value(Type* value);
431 void primitive_tuple();
432 void primitive_tuple_boa();
435 word* allot_word(cell name_, cell vocab_, cell hashcode_);
436 void primitive_word();
437 void primitive_word_code();
438 void primitive_word_optimized_p();
439 void primitive_wrapper();
440 void jit_compile_word(cell word_, cell def_, bool relocating);
443 void primitive_bignum_to_fixnum();
444 void primitive_bignum_to_fixnum_strict();
445 void primitive_float_to_fixnum();
446 void primitive_fixnum_divint();
447 void primitive_fixnum_divmod();
448 bignum* fixnum_to_bignum(fixnum);
449 bignum* cell_to_bignum(cell);
450 bignum* long_long_to_bignum(int64_t n);
451 bignum* ulong_long_to_bignum(uint64_t n);
452 inline fixnum sign_mask(fixnum x);
453 inline fixnum branchless_max(fixnum x, fixnum y);
454 inline fixnum branchless_abs(fixnum x);
455 void primitive_fixnum_shift();
456 void primitive_fixnum_to_bignum();
457 void primitive_float_to_bignum();
458 void primitive_bignum_eq();
459 void primitive_bignum_add();
460 void primitive_bignum_subtract();
461 void primitive_bignum_multiply();
462 void primitive_bignum_divint();
463 void primitive_bignum_divmod();
464 void primitive_bignum_mod();
465 void primitive_bignum_gcd();
466 void primitive_bignum_and();
467 void primitive_bignum_or();
468 void primitive_bignum_xor();
469 void primitive_bignum_shift();
470 void primitive_bignum_less();
471 void primitive_bignum_lesseq();
472 void primitive_bignum_greater();
473 void primitive_bignum_greatereq();
474 void primitive_bignum_not();
475 void primitive_bignum_bitp();
476 void primitive_bignum_log2();
477 inline cell unbox_array_size();
478 void primitive_fixnum_to_float();
479 void primitive_format_float();
480 void primitive_float_eq();
481 void primitive_float_add();
482 void primitive_float_subtract();
483 void primitive_float_multiply();
484 void primitive_float_divfloat();
485 void primitive_float_less();
486 void primitive_float_lesseq();
487 void primitive_float_greater();
488 void primitive_float_greatereq();
489 void primitive_float_bits();
490 void primitive_bits_float();
491 void primitive_double_bits();
492 void primitive_bits_double();
493 fixnum to_fixnum(cell tagged);
494 fixnum to_fixnum_strict(cell tagged);
495 cell to_cell(cell tagged);
496 cell from_signed_8(int64_t n);
497 int64_t to_signed_8(cell obj);
498 cell from_unsigned_8(uint64_t n);
499 uint64_t to_unsigned_8(cell obj);
500 float to_float(cell value);
501 double to_double(cell value);
502 inline void overflow_fixnum_add(fixnum x, fixnum y);
503 inline void overflow_fixnum_subtract(fixnum x, fixnum y);
504 inline void overflow_fixnum_multiply(fixnum x, fixnum y);
505 inline cell from_signed_cell(fixnum x);
506 inline cell from_unsigned_cell(cell x);
507 inline cell allot_float(double n);
508 inline bignum* float_to_bignum(cell tagged);
509 inline double untag_float(cell tagged);
510 inline double untag_float_check(cell tagged);
511 inline fixnum float_to_fixnum(cell tagged);
512 inline double fixnum_to_float(cell tagged);
515 template <typename Type> void check_tagged(tagged<Type> t) {
517 type_error(Type::type_number, t.value_);
520 template <typename Type> Type* untag_check(cell value) {
521 tagged<Type> t(value);
527 void io_error_if_not_EINTR();
528 FILE* safe_fopen(char* filename, const char* mode);
529 int safe_fgetc(FILE* stream);
530 size_t safe_fread(void* ptr, size_t size, size_t nitems, FILE* stream);
531 void safe_fputc(int c, FILE* stream);
532 size_t safe_fwrite(void* ptr, size_t size, size_t nitems, FILE* stream);
533 int safe_ftell(FILE* stream);
534 void safe_fseek(FILE* stream, off_t offset, int whence);
535 void safe_fflush(FILE* stream);
536 void primitive_fopen();
537 FILE* pop_file_handle();
538 FILE* peek_file_handle();
539 void primitive_fgetc();
540 void primitive_fread();
541 void primitive_fputc();
542 void primitive_fwrite();
543 void primitive_ftell();
544 void primitive_fseek();
545 void primitive_fflush();
546 void primitive_fclose();
549 cell compute_entry_point_pic_address(word* w, cell tagged_quot);
550 cell compute_entry_point_pic_address(cell w_);
551 cell compute_entry_point_pic_tail_address(cell w_);
552 cell compute_external_address(instruction_operand op);
554 void update_word_references(code_block* compiled, bool reset_inline_caches);
555 void undefined_symbol();
556 cell compute_dlsym_address(array* literals, cell index, bool toc);
557 cell lookup_external_address(relocation_type rel_type,
558 code_block* compiled,
561 void initialize_code_block(code_block* compiled, cell literals);
562 void initialize_code_block(code_block* compiled);
563 void fixup_labels(array* labels, code_block* compiled);
564 code_block* allot_code_block(cell size, code_block_type type);
565 code_block* add_code_block(code_block_type type, cell code_, cell labels_,
566 cell owner_, cell relocation_, cell parameters_,
567 cell literals_, cell frame_size_untagged);
570 template <typename Iterator> void each_code_block(Iterator& iter) {
571 code->allocator->iterate(iter, no_fixup());
574 void update_code_heap_words(bool reset_inline_caches);
575 void primitive_modify_code_heap();
576 void primitive_code_room();
577 void primitive_strip_stack_traces();
578 void primitive_code_blocks();
581 void primitive_free_callback();
582 void primitive_callback();
583 void primitive_callback_room();
586 void load_data_heap(FILE* file, image_header* h, vm_parameters* p);
587 void load_code_heap(FILE* file, image_header* h, vm_parameters* p);
588 bool save_image(const vm_char* saving_filename, const vm_char* filename);
589 void primitive_save_image();
590 void fixup_heaps(cell data_offset, cell code_offset);
591 void load_image(vm_parameters* p);
592 bool read_embedded_image_footer(FILE* file, embedded_image_footer* footer);
593 bool embedded_image_p();
595 template <typename Iterator, typename Fixup>
596 void iterate_callstack_object(callstack* stack_, Iterator& iterator,
598 template <typename Iterator>
599 void iterate_callstack_object(callstack* stack_, Iterator& iterator);
601 callstack* allot_callstack(cell size);
602 cell second_from_top_stack_frame(context* ctx);
603 cell capture_callstack(context* ctx);
604 void primitive_callstack_for();
605 void primitive_callstack_to_array();
606 void primitive_innermost_stack_frame_executing();
607 void primitive_innermost_stack_frame_scan();
608 void primitive_set_innermost_stack_frame_quotation();
610 template <typename Iterator, typename Fixup>
611 void iterate_callstack(context* ctx, Iterator& iterator, Fixup& fixup);
612 template <typename Iterator>
613 void iterate_callstack(context* ctx, Iterator& iterator);
616 void dispatch_signal_handler(cell* sp, cell* pc, cell newpc);
617 #if defined(FACTOR_X86) || defined(FACTOR_64)
618 void dispatch_non_resumable_signal(cell* sp, cell* pc,
621 void dispatch_resumable_signal(cell* sp, cell* pc, cell handler);
625 char* pinned_alien_offset(cell obj);
626 cell allot_alien(cell delegate_, cell displacement);
627 cell allot_alien(cell address);
628 void primitive_displaced_alien();
629 void primitive_alien_address();
630 void* alien_pointer();
631 void primitive_dlopen();
632 void primitive_dlsym();
633 void primitive_dlsym_raw();
634 void primitive_dlclose();
635 void primitive_dll_validp();
636 char* alien_offset(cell obj);
639 void primitive_jit_compile();
640 cell lazy_jit_compile_entry_point();
641 void primitive_array_to_quotation();
642 void primitive_quotation_code();
643 code_block* jit_compile_quotation(cell owner_, cell quot_, bool relocating);
644 void jit_compile_quotation(cell quot_, bool relocating);
645 fixnum quot_code_offset_to_scan(cell quot_, cell offset);
646 cell lazy_jit_compile(cell quot);
647 bool quotation_compiled_p(quotation* quot);
648 void primitive_quotation_compiled_p();
651 cell lookup_tuple_method(cell obj, cell methods);
652 cell lookup_method(cell obj, cell methods);
653 void primitive_lookup_method();
654 cell object_class(cell obj);
655 void update_method_cache(cell cache, cell klass, cell method);
656 void primitive_mega_cache_miss();
657 void primitive_reset_dispatch_stats();
658 void primitive_dispatch_stats();
661 void deallocate_inline_cache(cell return_address);
662 void update_pic_count(cell type);
663 cell add_inline_cache_entry(cell cache_entries_, cell klass_, cell method_);
664 void update_pic_transitions(cell pic_size);
665 cell inline_cache_miss(cell return_address);
668 void c_to_factor(cell quot);
669 void unwind_native_frames(cell quot, cell to);
670 cell get_fpu_state();
671 void set_fpu_state(cell state);
674 void handle_safepoint(cell pc);
675 void enqueue_samples(cell samples, cell pc, bool foreign_thread_p);
679 void prepare_boot_image();
680 void init_factor(vm_parameters* p);
681 void pass_args_to_factor(int argc, vm_char** argv);
683 void start_standalone_factor(int argc, vm_char** argv);
684 char* factor_eval_string(char* string);
685 void factor_eval_free(char* result);
687 void factor_sleep(long us);
690 void primitive_existsp();
692 void ffi_dlopen(dll* dll);
693 cell ffi_dlsym(dll* dll, symbol_char* symbol);
694 cell ffi_dlsym_raw(dll* dll, symbol_char* symbol);
695 void ffi_dlclose(dll* dll);
696 void c_to_factor_toplevel(cell quot);
698 void start_sampling_profiler_timer();
699 void end_sampling_profiler_timer();
703 /* Id of the main thread we run in. Used for Ctrl-Break handling. */
706 HANDLE ctrl_break_thread;
708 HANDLE sampler_thread;
709 void sampler_thread_loop();
711 const vm_char* vm_executable_path();
712 const vm_char* default_image_path();
713 BOOL windows_stat(vm_char* path);
715 LONG exception_handler(PEXCEPTION_RECORD e, void* frame, PCONTEXT c,
719 void dispatch_signal(void* uap, void(handler)());
720 void unix_init_signals();
724 void call_fault_handler(exception_type_t exception,
725 exception_data_type_t code,
726 MACH_EXC_STATE_TYPE* exc_state,
727 MACH_THREAD_STATE_TYPE* thread_state,
728 MACH_FLOAT_STATE_TYPE* float_state);
731 factor_vm(THREADHANDLE thread_id);