#include "master.hpp"
-namespace factor
-{
-
-std::ostream &operator<<(std::ostream &out, const string *str)
-{
- for(cell i = 0; i < string_capacity(str); i++)
- out << (char)str->data()[i];
- return out;
-}
+using namespace std;
+
+namespace factor {
-void factor_vm::print_word(word *word, cell nesting)
-{
- if(tagged<object>(word->vocabulary).type_p(STRING_TYPE))
- std::cout << untag<string>(word->vocabulary) << ":";
-
- if(tagged<object>(word->name).type_p(STRING_TYPE))
- std::cout << untag<string>(word->name);
- else
- {
- std::cout << "#<not a string: ";
- print_nested_obj(word->name,nesting);
- std::cout << ">";
- }
+bool factor_print_p = true;
+
+ostream& operator<<(ostream& out, const string* str) {
+ for (cell i = 0; i < string_capacity(str); i++)
+ out << (char)str->data()[i];
+ return out;
}
-void factor_vm::print_factor_string(string *str)
-{
- std::cout << '"' << str << '"';
+void factor_vm::print_word(ostream& out, word* word, cell nesting) {
+ if (TAG(word->vocabulary) == STRING_TYPE)
+ out << untag<string>(word->vocabulary) << ":";
+
+ if (TAG(word->name) == STRING_TYPE)
+ out << untag<string>(word->name);
+ else {
+ out << "#<not a string: ";
+ print_nested_obj(out, word->name, nesting);
+ out << ">";
+ }
}
-void factor_vm::print_array(array *array, cell nesting)
-{
- cell length = array_capacity(array);
- cell i;
- bool trimmed;
-
- if(length > 10 && !full_output)
- {
- trimmed = true;
- length = 10;
- }
- else
- trimmed = false;
-
- for(i = 0; i < length; i++)
- {
- std::cout << " ";
- print_nested_obj(array_nth(array,i),nesting);
- }
-
- if(trimmed)
- std::cout << "...";
+void factor_vm::print_factor_string(ostream& out, string* str) {
+ out << '"' << str << '"';
}
-void factor_vm::print_tuple(tuple *tuple, cell nesting)
-{
- tuple_layout *layout = untag<tuple_layout>(tuple->layout);
- cell length = to_fixnum(layout->size);
-
- std::cout << " ";
- print_nested_obj(layout->klass,nesting);
-
- bool trimmed;
- if(length > 10 && !full_output)
- {
- trimmed = true;
- length = 10;
- }
- else
- trimmed = false;
-
- for(cell i = 0; i < length; i++)
- {
- std::cout << " ";
- print_nested_obj(tuple->data()[i],nesting);
- }
-
- if(trimmed)
- std::cout << "...";
+void factor_vm::print_array(ostream& out, array* array, cell nesting) {
+ cell length = array_capacity(array);
+ cell i;
+ bool trimmed;
+
+ if (length > 10 && !full_output) {
+ trimmed = true;
+ length = 10;
+ } else
+ trimmed = false;
+
+ for (i = 0; i < length; i++) {
+ out << " ";
+ print_nested_obj(out, array_nth(array, i), nesting);
+ }
+
+ if (trimmed)
+ out << "...";
}
-void factor_vm::print_nested_obj(cell obj, fixnum nesting)
-{
- if(nesting <= 0 && !full_output)
- {
- std::cout << " ... ";
- return;
- }
-
- quotation *quot;
-
- switch(tagged<object>(obj).type())
- {
- case FIXNUM_TYPE:
- std::cout << untag_fixnum(obj);
- break;
- case WORD_TYPE:
- print_word(untag<word>(obj),nesting - 1);
- break;
- case STRING_TYPE:
- print_factor_string(untag<string>(obj));
- break;
- case F_TYPE:
- std::cout << "f";
- break;
- case TUPLE_TYPE:
- std::cout << "T{";
- print_tuple(untag<tuple>(obj),nesting - 1);
- std::cout << " }";
- break;
- case ARRAY_TYPE:
- std::cout << "{";
- print_array(untag<array>(obj),nesting - 1);
- std::cout << " }";
- break;
- case QUOTATION_TYPE:
- std::cout << "[";
- quot = untag<quotation>(obj);
- print_array(untag<array>(quot->array),nesting - 1);
- std::cout << " ]";
- break;
- default:
- std::cout << "#<type " << tagged<object>(obj).type() << " @ ";
- std::cout << std::hex << obj << std::dec << ">";
- break;
- }
+void factor_vm::print_alien(ostream& out, alien* alien, cell nesting) {
+ if (to_boolean(alien->expired))
+ out << "#<expired alien>";
+ else if (to_boolean(alien->base)) {
+ out << "#<displaced alien " << alien->displacement << "+";
+ print_nested_obj(out, alien->base, nesting);
+ out << ">";
+ } else {
+ out << "#<alien " << (void*)alien->address << ">";
+ }
}
-void factor_vm::print_obj(cell obj)
-{
- print_nested_obj(obj,10);
+void factor_vm::print_byte_array(ostream& out, byte_array* array, cell nesting) {
+ (void)nesting;
+ cell length = array->capacity;
+ cell i;
+ bool trimmed;
+ unsigned char* data = array->data<unsigned char>();
+
+ if (length > 16 && !full_output) {
+ trimmed = true;
+ length = 16;
+ } else
+ trimmed = false;
+
+ for (i = 0; i < length; i++) {
+ out << " " << (unsigned) data[i];
+ }
+
+ if (trimmed)
+ out << "...";
}
-void factor_vm::print_objects(cell *start, cell *end)
-{
- for(; start <= end; start++)
- {
- print_obj(*start);
- std::cout << std::endl;
- }
+void factor_vm::print_tuple(ostream& out, tuple* tuple, cell nesting) {
+ tuple_layout* layout = untag<tuple_layout>(tuple->layout);
+ cell length = to_cell(layout->size);
+
+ out << " ";
+ print_nested_obj(out, layout->klass, nesting);
+
+ bool trimmed;
+ if (length > 10 && !full_output) {
+ trimmed = true;
+ length = 10;
+ } else
+ trimmed = false;
+
+ for (cell i = 0; i < length; i++) {
+ out << " ";
+ print_nested_obj(out, tuple->data()[i], nesting);
+ }
+
+ if (trimmed)
+ out << "...";
}
-void factor_vm::print_datastack()
-{
- std::cout << "==== DATA STACK:\n";
- print_objects((cell *)ctx->datastack_seg->start,(cell *)ctx->datastack);
+void factor_vm::print_nested_obj(ostream& out, cell obj, fixnum nesting) {
+ if (nesting <= 0 && !full_output) {
+ out << " ... ";
+ return;
+ }
+
+ quotation* quot;
+
+ switch (TAG(obj)) {
+ case FIXNUM_TYPE:
+ out << untag_fixnum(obj);
+ break;
+ case FLOAT_TYPE:
+ out << untag_float(obj);
+ break;
+ case WORD_TYPE:
+ print_word(out, untag<word>(obj), nesting - 1);
+ break;
+ case STRING_TYPE:
+ print_factor_string(out, untag<string>(obj));
+ break;
+ case F_TYPE:
+ out << "f";
+ break;
+ case TUPLE_TYPE:
+ out << "T{";
+ print_tuple(out, untag<tuple>(obj), nesting - 1);
+ out << " }";
+ break;
+ case WRAPPER_TYPE:
+ out << "W{ ";
+ print_nested_obj(out, untag<wrapper>(obj)->object, nesting - 1);
+ out << " }";
+ break;
+ case BYTE_ARRAY_TYPE:
+ out << "B{";
+ print_byte_array(out, untag<byte_array>(obj), nesting - 1);
+ out << " }";
+ break;
+ case ARRAY_TYPE:
+ out << "{";
+ print_array(out, untag<array>(obj), nesting - 1);
+ out << " }";
+ break;
+ case QUOTATION_TYPE:
+ out << "[";
+ quot = untag<quotation>(obj);
+ print_array(out, untag<array>(quot->array), nesting - 1);
+ out << " ]";
+ break;
+ case ALIEN_TYPE:
+ print_alien(out, untag<alien>(obj), nesting - 1);
+ break;
+ default:
+ out << "#<" << type_name(TAG(obj)) << " @ ";
+ out << (void*)obj << ">";
+ break;
+ }
+ out << flush;
}
-void factor_vm::print_retainstack()
-{
- std::cout << "==== RETAIN STACK:\n";
- print_objects((cell *)ctx->retainstack_seg->start,(cell *)ctx->retainstack);
+void factor_vm::print_obj(ostream& out, cell obj) {
+ print_nested_obj(out, obj, 10);
}
-struct stack_frame_printer {
- factor_vm *parent;
-
- explicit stack_frame_printer(factor_vm *parent_) : parent(parent_) {}
- void operator()(stack_frame *frame)
- {
- std::cout << "frame: " << std::hex << (cell)frame << std::dec << std::endl;
- std::cout << "executing: ";
- parent->print_obj(parent->frame_executing(frame));
- std::cout << std::endl;
- std::cout << "scan: ";
- parent->print_obj(parent->frame_scan(frame));
- std::cout << std::endl;
- std::cout << "word/quot addr: ";
- std::cout << std::hex << (cell)parent->frame_executing(frame) << std::dec;
- std::cout << std::endl;
- std::cout << "word/quot xt: ";
- std::cout << std::hex << (cell)frame->entry_point << std::dec;
- std::cout << std::endl;
- std::cout << "return address: ";
- std::cout << std::hex << (cell)FRAME_RETURN_ADDRESS(frame,parent) << std::dec;
- std::cout << std::endl;
- }
-};
+void factor_vm::print_objects(ostream& out, cell* start, cell* end) {
+ for (; start <= end; start++) {
+ print_obj(out, *start);
+ cout << endl;
+ }
+}
-void factor_vm::print_callstack()
-{
- std::cout << "==== CALL STACK:\n";
- stack_frame_printer printer(this);
- iterate_callstack(ctx,printer);
+void factor_vm::print_datastack(ostream& out) {
+ out << "==== DATA STACK:" << endl;
+ if (ctx)
+ print_objects(out,
+ (cell*)ctx->datastack_seg->start,
+ (cell*)ctx->datastack);
+ else
+ out << "*** Context not initialized" << endl;
}
-struct padded_address {
- cell value;
+void factor_vm::print_retainstack(ostream& out) {
+ out << "==== RETAIN STACK:" << endl;
+ if (ctx)
+ print_objects(out,
+ (cell*)ctx->retainstack_seg->start,
+ (cell*)ctx->retainstack);
+ else
+ out << "*** Context not initialized" << endl;
+}
- explicit padded_address(cell value_) : value(value_) {}
+struct stack_frame_printer {
+ factor_vm* parent;
+ ostream& out;
+
+ explicit stack_frame_printer(factor_vm* parent, ostream& out)
+ : parent(parent), out(out) {}
+ void operator()(cell frame_top, cell size, code_block* owner, cell addr) {
+ out << endl;
+ out << "frame: " << (void*)frame_top << " size " << size << endl;
+ out << "executing: ";
+ parent->print_obj(out, owner->owner);
+ out << endl;
+ out << "scan: ";
+ parent->print_obj(out, owner->scan(parent, addr));
+ out << endl;
+ out << "word/quot addr: ";
+ out << hex << owner->owner << dec;
+ out << endl;
+ out << "word/quot xt: ";
+ out << hex << owner->entry_point() << dec;
+ out << endl;
+ out << "return address: ";
+ out << hex << addr << dec;
+ out << endl;
+ }
};
-std::ostream &operator<<(std::ostream &out, const padded_address &value)
-{
- char prev = out.fill('0');
- out.width(sizeof(cell) * 2);
- out << std::hex << value.value << std::dec;
- out.fill(prev);
- return out;
+void factor_vm::print_callstack(ostream& out) {
+ out << "==== CALL STACK:" << endl;
+ if (ctx) {
+ stack_frame_printer printer(this, out);
+ iterate_callstack(ctx, printer);
+ } else
+ out << "*** Context not initialized" << endl;
}
-void factor_vm::dump_cell(cell x)
-{
- std::cout << padded_address(x) << ": ";
- x = *(cell *)x;
- std::cout << padded_address(x) << " tag " << TAG(x) << std::endl;
+void factor_vm::print_callstack_object(ostream& out, callstack* obj) {
+ stack_frame_printer printer(this, out);
+ iterate_callstack_object(obj, printer);
}
-void factor_vm::dump_memory(cell from, cell to)
-{
- from = UNTAG(from);
+struct padded_address {
+ cell value;
+
+ explicit padded_address(cell value) : value(value) {}
+};
- for(; from <= to; from += sizeof(cell))
- dump_cell(from);
+ostream& operator<<(ostream& out, const padded_address& value) {
+ char prev = out.fill('0');
+ out.width(sizeof(cell) * 2);
+ out << hex << value.value << dec;
+ out.fill(prev);
+ return out;
}
-template<typename Generation>
-void factor_vm::dump_generation(const char *name, Generation *gen)
-{
- std::cout << name << ": ";
- std::cout << "Start=" << gen->start;
- std::cout << ", size=" << gen->size;
- std::cout << ", end=" << gen->end;
- std::cout << std::endl;
+void factor_vm::dump_cell(ostream& out, cell x) {
+ out << padded_address(x) << ": ";
+ x = *(cell*)x;
+ out << padded_address(x) << " tag " << TAG(x) << endl;
}
-void factor_vm::dump_generations()
-{
- std::cout << std::hex;
+void factor_vm::dump_memory(ostream& out, cell from, cell to) {
+ from = UNTAG(from);
- dump_generation("Nursery",&nursery);
- dump_generation("Aging",data->aging);
- dump_generation("Tenured",data->tenured);
+ for (; from <= to; from += sizeof(cell))
+ dump_cell(out, from);
+}
- std::cout << "Cards:";
- std::cout << "base=" << (cell)data->cards << ", ";
- std::cout << "size=" << (cell)(data->cards_end - data->cards) << std::endl;
+void dump_memory_range(ostream& out, const char* name, cell name_w,
+ cell start, cell end) {
+ out << setw(static_cast<int>(name_w)) << left << name << ": ";
- std::cout << std::dec;
+ out << "[" << (void*)start << " -> " << (void*)end << "] ";
+ out << setw(10) << right << (end - start) << " bytes" << endl;
}
-struct object_dumper {
- factor_vm *parent;
- cell type;
-
- explicit object_dumper(factor_vm *parent_, cell type_) :
- parent(parent_), type(type_) {}
-
- void operator()(object *obj)
- {
- if(type == TYPE_COUNT || obj->type() == type)
- {
- std::cout << padded_address((cell)obj) << " ";
- parent->print_nested_obj(tag_dynamic(obj),2);
- std::cout << std::endl;
- }
- }
-};
+template <typename Generation>
+void dump_generation(ostream& out, const char* name, Generation* gen) {
+ dump_memory_range(out, name, 10, gen->start, gen->end);
+}
-void factor_vm::dump_objects(cell type)
-{
- primitive_full_gc();
- object_dumper dumper(this,type);
- each_object(dumper);
+void factor_vm::dump_memory_layout(ostream& out) {
+ dump_generation(out, "Nursery", data->nursery);
+ dump_generation(out, "Aging", data->aging);
+ dump_generation(out, "Tenured", data->tenured);
+ dump_memory_range(out, "Cards", 10, (cell)data->cards, (cell)data->cards_end);
+
+ out << endl << "Contexts:" << endl << endl;
+ FACTOR_FOR_EACH(active_contexts) {
+ context* the_ctx = *iter;
+ segment* ds = the_ctx->datastack_seg;
+ segment* rs = the_ctx->retainstack_seg;
+ segment* cs = the_ctx->callstack_seg;
+ if (the_ctx == ctx) {
+ out << " Active:" << endl;
+ }
+ dump_memory_range(out, " Datastack", 14, ds->start, ds->end);
+ dump_memory_range(out, " Retainstack", 14, rs->start, rs->end);
+ dump_memory_range(out, " Callstack", 14, cs->start, cs->end);
+ out << endl;
+ }
}
-struct data_reference_slot_visitor {
- cell look_for;
- object *obj;
- factor_vm *parent;
-
- explicit data_reference_slot_visitor(cell look_for_, object *obj_, factor_vm *parent_) :
- look_for(look_for_), obj(obj_), parent(parent_) { }
-
- void operator()(cell *scan)
- {
- if(look_for == *scan)
- {
- std::cout << padded_address((cell)obj) << " ";
- parent->print_nested_obj(tag_dynamic(obj),2);
- std::cout << std::endl;
- }
- }
-};
+void factor_vm::dump_objects(ostream& out, cell type) {
+ primitive_full_gc();
+ auto object_dumper = [&](object* obj) {
+ if (type == TYPE_COUNT || obj->type() == type) {
+ out << padded_address((cell)obj) << " ";
+ print_nested_obj(out, tag_dynamic(obj), 2);
+ out << endl;
+ }
+ };
+ each_object(object_dumper);
+}
-struct data_reference_object_visitor {
- cell look_for;
- factor_vm *parent;
+void factor_vm::find_data_references(ostream& out, cell look_for) {
+ primitive_full_gc();
+ auto find_data_ref_func = [&](object* obj, cell* slot) {
+ if (look_for == *slot) {
+ out << padded_address((cell)obj) << " ";
+ print_nested_obj(out, tag_dynamic(obj), 2);
+ out << endl;
+ }
+ };
+ each_object_each_slot(find_data_ref_func);
+}
- explicit data_reference_object_visitor(cell look_for_, factor_vm *parent_) :
- look_for(look_for_), parent(parent_) {}
+void factor_vm::dump_edges(ostream& out) {
+ primitive_full_gc();
+ auto dump_edges_func = [&](object* obj, cell* scan) {
+ if (TAG(*scan) > F_TYPE) {
+ out << (void*)tag_dynamic(obj);
+ out << " ==> ";
+ out << (void*)*scan << endl;
+ }
+ };
+ each_object_each_slot(dump_edges_func);
+}
- void operator()(object *obj)
- {
- data_reference_slot_visitor visitor(look_for,obj,parent);
- obj->each_slot(visitor);
- }
+struct code_block_printer {
+ factor_vm* parent;
+ ostream& out;
+ cell reloc_size, parameter_size;
+
+ explicit code_block_printer(factor_vm* parent, ostream& out)
+ : parent(parent), out(out), reloc_size(0), parameter_size(0) {}
+
+ void operator()(code_block* scan, cell size) {
+ const char* status;
+ if (scan->free_p())
+ status = "free";
+ else {
+ reloc_size += object_size(scan->relocation);
+ parameter_size += object_size(scan->parameters);
+
+ if (parent->code->allocator->state.marked_p((cell)scan))
+ status = "marked";
+ else
+ status = "allocated";
+
+ out << hex << (cell)scan << dec << " ";
+ out << hex << size << dec << " ";
+ out << status << " ";
+ out << "stack frame " << scan->stack_frame_size();
+ out << endl;
+ }
+ }
};
-void factor_vm::find_data_references(cell look_for)
-{
- data_reference_object_visitor visitor(look_for,this);
- each_object(visitor);
+// Dump all code blocks for debugging
+void factor_vm::dump_code_heap(ostream& out) {
+ code_block_printer printer(this, out);
+ code->allocator->iterate(printer, no_fixup());
+ out << printer.reloc_size << " bytes used by relocation tables" << endl;
+ out << printer.parameter_size << " bytes used by parameter tables" << endl;
}
-struct code_block_printer {
- factor_vm *parent;
- cell reloc_size, parameter_size;
-
- explicit code_block_printer(factor_vm *parent_) :
- parent(parent_), reloc_size(0), parameter_size(0) {}
-
- void operator()(code_block *scan, cell size)
- {
- const char *status;
- if(scan->free_p())
- status = "free";
- else
- {
- reloc_size += parent->object_size(scan->relocation);
- parameter_size += parent->object_size(scan->parameters);
-
- if(parent->code->marked_p(scan))
- status = "marked";
- else
- status = "allocated";
-
- std::cout << std::hex << (cell)scan << std::dec << " ";
- std::cout << std::hex << size << std::dec << " ";
- std::cout << status << std::endl;
- }
- }
-};
+void factor_vm::factorbug_usage(bool advanced_p) {
+ cout << "Basic commands:" << endl;
+#ifdef WINDOWS
+ cout << " q ^Z -- quit Factor" << endl;
+#else
+ cout << " q ^D -- quit Factor" << endl;
+#endif
+ cout << " c -- continue executing Factor - NOT SAFE"
+ << endl;
+ cout << " t -- throw exception in Factor - NOT SAFE"
+ << endl;
+ cout << " .s .r .c -- print data, retain, call stacks"
+ << endl;
+ if (advanced_p) {
+ cout << " help -- reprint this message" << endl;
+ cout << "Advanced commands:" << endl;
+ cout << " e -- dump environment" << endl;
+ cout << " d <addr> <count> -- dump memory" << endl;
+ cout << " u <addr> -- dump object at tagged <addr>"
+ << endl;
+ cout << " . <addr> -- print object at tagged <addr>"
+ << endl;
+ cout << " g -- dump memory layout" << endl;
+ cout << " ds dr -- dump data, retain stacks" << endl;
+ cout << " trim -- toggle output trimming" << endl;
+ cout << " data -- data heap dump" << endl;
+ cout << " words -- words dump" << endl;
+ cout << " tuples -- tuples dump" << endl;
+ cout << " edges -- print all object-to-object references"
+ << endl;
+ cout << " refs <addr> -- find data heap references to object"
+ << endl;
+ cout << " push <addr> -- push object on data stack - NOT SAFE"
+ << endl;
+ cout << " gc -- trigger full GC - NOT SAFE"
+ << endl;
+ cout << " compact-gc -- trigger compacting GC - NOT SAFE"
+ << endl;
+ cout << " code -- code heap dump" << endl;
+ cout << " abort -- call abort()" << endl;
+ cout << " breakpoint -- trigger system breakpoint" << endl;
+ } else {
+ cout << " help -- full help, including advanced commands"
+ << endl;
+ }
+ cout << endl;
+}
-/* Dump all code blocks for debugging */
-void factor_vm::dump_code_heap()
-{
- code_block_printer printer(this);
- code->allocator->iterate(printer);
- std::cout << printer.reloc_size << " bytes used by relocation tables\n";
- std::cout << printer.parameter_size << " bytes used by parameter tables\n";
+static void exit_fep(factor_vm* vm) {
+ unlock_console();
+ handle_ctrl_c();
+ vm->fep_p = false;
}
-void factor_vm::factorbug()
-{
- if(fep_disabled)
- {
- std::cout << "Low level debugger disabled\n";
- exit(1);
- }
-
- fep_p = true;
-
- std::cout << "Starting low level debugger...\n";
- std::cout << "Basic commands:\n";
- std::cout << " q ^D -- quit Factor\n";
- std::cout << " c -- continue executing Factor - NOT SAFE\n";
- std::cout << " t -- throw exception in Factor - NOT SAFE\n";
- std::cout << " .s .r .c -- print data, retain, call stacks\n";
- std::cout << "Advanced commands:\n";
- std::cout << " e -- dump environment\n";
- std::cout << " d <addr> <count> -- dump memory\n";
- std::cout << " u <addr> -- dump object at tagged <addr>\n";
- std::cout << " . <addr> -- print object at tagged <addr>\n";
- std::cout << " g -- dump generations\n";
- std::cout << " ds dr -- dump data, retain stacks\n";
- std::cout << " trim -- toggle output trimming\n";
- std::cout << " data -- data heap dump\n";
- std::cout << " words -- words dump\n";
- std::cout << " tuples -- tuples dump\n";
- std::cout << " refs <addr> -- find data heap references to object\n";
- std::cout << " push <addr> -- push object on data stack - NOT SAFE\n";
- std::cout << " gc -- trigger full GC - NOT SAFE\n";
- std::cout << " code -- code heap dump\n";
-
- bool seen_command = false;
-
- for(;;)
- {
- char cmd[1024];
-
- std::cout << "READY\n";
- std::cout.flush();
-
- std::cin >> std::setw(1024) >> cmd >> std::setw(0);
- if(!std::cin.good())
- {
- if(!seen_command)
- {
- /* If we exit with an EOF immediately, then
- dump stacks. This is useful for builder and
- other cases where Factor is run with stdin
- redirected to /dev/null */
- fep_disabled = true;
-
- print_datastack();
- print_retainstack();
- print_callstack();
- }
-
- exit(1);
- }
-
- seen_command = true;
-
- if(strcmp(cmd,"q") == 0)
- exit(1);
- if(strcmp(cmd,"d") == 0)
- {
- cell addr = read_cell_hex();
- if (std::cin.peek() == ' ')
- std::cin.ignore();
-
- if(!std::cin.good()) break;
- cell count = read_cell_hex();
- dump_memory(addr,addr+count);
- }
- else if(strcmp(cmd,"u") == 0)
- {
- cell addr = read_cell_hex();
- cell count = object_size(addr);
- dump_memory(addr,addr+count);
- }
- else if(strcmp(cmd,".") == 0)
- {
- cell addr = read_cell_hex();
- print_obj(addr);
- std::cout << std::endl;
- }
- else if(strcmp(cmd,"trim") == 0)
- full_output = !full_output;
- else if(strcmp(cmd,"ds") == 0)
- dump_memory(ctx->datastack_seg->start,ctx->datastack);
- else if(strcmp(cmd,"dr") == 0)
- dump_memory(ctx->retainstack_seg->start,ctx->retainstack);
- else if(strcmp(cmd,".s") == 0)
- print_datastack();
- else if(strcmp(cmd,".r") == 0)
- print_retainstack();
- else if(strcmp(cmd,".c") == 0)
- print_callstack();
- else if(strcmp(cmd,"e") == 0)
- {
- for(cell i = 0; i < special_object_count; i++)
- dump_cell((cell)&special_objects[i]);
- }
- else if(strcmp(cmd,"g") == 0)
- dump_generations();
- else if(strcmp(cmd,"c") == 0)
- {
- fep_p = false;
- return;
- }
- else if(strcmp(cmd,"t") == 0)
- {
- fep_p = false;
- general_error(ERROR_INTERRUPT,false_object,false_object);
- assert(false);
- }
- else if(strcmp(cmd,"data") == 0)
- dump_objects(TYPE_COUNT);
- else if(strcmp(cmd,"refs") == 0)
- {
- cell addr = read_cell_hex();
- std::cout << "Data heap references:\n";
- find_data_references(addr);
- std::cout << std::endl;
- }
- else if(strcmp(cmd,"words") == 0)
- dump_objects(WORD_TYPE);
- else if(strcmp(cmd,"tuples") == 0)
- dump_objects(TUPLE_TYPE);
- else if(strcmp(cmd,"push") == 0)
- {
- cell addr = read_cell_hex();
- ctx->push(addr);
- }
- else if(strcmp(cmd,"code") == 0)
- dump_code_heap();
- else if(strcmp(cmd,"gc") == 0)
- primitive_full_gc();
- else
- std::cout << "unknown command\n";
- }
+void factor_vm::factorbug() {
+ if (fep_disabled) {
+ cout << "Low level debugger disabled" << endl;
+ exit(1);
+ }
+
+ if (sampling_profiler_p)
+ end_sampling_profiler();
+
+ fep_p = true;
+
+ cout << "Starting low level debugger..." << endl;
+
+ // Even though we've stopped the VM, the stdin_loop thread (see os-*.cpp)
+ // that pumps the console is still running concurrently. We lock a mutex so
+ // the thread will take a break and give us exclusive access to stdin.
+ lock_console();
+ ignore_ctrl_c();
+
+ if (!fep_help_was_shown) {
+ factorbug_usage(false);
+ fep_help_was_shown = true;
+ }
+ bool seen_command = false;
+
+ for (;;) {
+ std::string cmd;
+
+ cout << "> " << flush;
+
+ cin >> setw(1024) >> cmd >> setw(0);
+ if (!cin.good()) {
+ if (!seen_command) {
+ // If we exit with an EOF immediately, then
+ // dump stacks. This is useful for builder and
+ // other cases where Factor is run with stdin
+ // redirected to /dev/null
+ fep_disabled = true;
+
+ print_datastack(cout);
+ print_retainstack(cout);
+ print_callstack(cout);
+ }
+
+ exit(1);
+ }
+
+ seen_command = true;
+
+ if (cmd == "q")
+ exit(1);
+ if (cmd == "d") {
+ cell addr = read_cell_hex();
+ if (cin.peek() == ' ')
+ cin.ignore();
+
+ if (!cin.good())
+ break;
+ cell count = read_cell_hex();
+ dump_memory(cout, addr, addr + count);
+ } else if (cmd == "u") {
+ cell addr = read_cell_hex();
+ cell count = object_size(addr);
+ dump_memory(cout, addr, addr + count);
+ } else if (cmd == ".") {
+ cell addr = read_cell_hex();
+ print_obj(cout, addr);
+ cout << endl;
+ } else if (cmd == "trim")
+ full_output = !full_output;
+ else if (cmd == "ds")
+ dump_memory(cout, ctx->datastack_seg->start, ctx->datastack);
+ else if (cmd == "dr")
+ dump_memory(cout, ctx->retainstack_seg->start, ctx->retainstack);
+ else if (cmd == ".s")
+ print_datastack(cout);
+ else if (cmd == ".r")
+ print_retainstack(cout);
+ else if (cmd == ".c")
+ print_callstack(cout);
+ else if (cmd == "e") {
+ for (cell i = 0; i < special_object_count; i++)
+ dump_cell(cout, (cell)&special_objects[i]);
+ } else if (cmd == "g")
+ dump_memory_layout(cout);
+ else if (cmd == "c") {
+ exit_fep(this);
+ return;
+ } else if (cmd == "t") {
+ exit_fep(this);
+ general_error(ERROR_INTERRUPT, false_object, false_object);
+ FACTOR_ASSERT(false);
+ } else if (cmd == "data")
+ dump_objects(cout, TYPE_COUNT);
+ else if (cmd == "edges")
+ dump_edges(cout);
+ else if (cmd == "refs") {
+ cell addr = read_cell_hex();
+ cout << "Data heap references:" << endl;
+ find_data_references(cout, addr);
+ cout << endl;
+ } else if (cmd == "words")
+ dump_objects(cout, WORD_TYPE);
+ else if (cmd == "tuples")
+ dump_objects(cout, TUPLE_TYPE);
+ else if (cmd == "push") {
+ cell addr = read_cell_hex();
+ ctx->push(addr);
+ } else if (cmd == "code")
+ dump_code_heap(cout);
+ else if (cmd == "gc")
+ primitive_full_gc();
+ else if (cmd == "compact-gc")
+ primitive_compact_gc();
+ else if (cmd == "help")
+ factorbug_usage(true);
+ else if (cmd == "abort")
+ abort();
+ else if (cmd == "breakpoint")
+ breakpoint();
+ else
+ cout << "unknown command" << endl;
+ }
}
-void factor_vm::primitive_die()
-{
- std::cout << "The die word was called by the library. Unless you called it yourself,\n";
- std::cout << "you have triggered a bug in Factor. Please report.\n";
- factorbug();
+void factor_vm::primitive_die() {
+ critical_error("The die word was called by the library.", 0);
}
}
projects / factor.git / blobdiff