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call_frame.cpp
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call_frame.cpp
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#include "builtin/class.hpp"
#include "builtin/compiled_code.hpp"
#include "builtin/constant_scope.hpp"
#include "builtin/lookup_table.hpp"
#include "builtin/native_method.hpp"
#include "builtin/string.hpp"
#include "builtin/symbol.hpp"
#include "builtin/tuple.hpp"
#include "builtin/variable_scope.hpp"
#include "call_frame.hpp"
#include "object_utils.hpp"
#include <iostream>
namespace rubinius {
Object* CallFrame::last_match(STATE) {
CallFrame* use = this->top_ruby_frame();;
while(use && use->is_inline_block()) {
CallFrame* yielder = use->previous;
if(!yielder) return cNil;
// This works because the creator is always one above
// the yielder with inline blocks.
use = yielder->previous;
}
if(!use) return cNil;
return use->scope->last_match(state);
}
void CallFrame::set_last_match(STATE, Object* obj) {
CallFrame* use = this->top_ruby_frame();
while(use && use->is_inline_block()) {
CallFrame* yielder = use->previous;
if(!yielder) return;
// This works because the creator is always one above
// the yielder with inline blocks.
use = yielder->previous;
}
if(!use) return;
use->scope->set_last_match(state, obj);
}
VariableScope* CallFrame::promote_scope_full(STATE) {
return scope->create_heap_alias(state, this, !has_closed_scope_p());
}
VariableScope* CallFrame::method_scope(STATE) {
VariableScope* current = promote_scope(state);
if(!multiple_scopes_p()) return current;
for(;;) {
if(current->block_as_method_p()) return current;
VariableScope* parent = current->parent();
if(!parent->nil_p()) {
current = parent;
} else {
return current;
}
}
// Shouldn't ever get here.
return 0;
}
void CallFrame::print_backtrace(STATE, int total, bool filter) {
print_backtrace(state, std::cout, total, filter);
}
void CallFrame::print_backtrace(STATE, std::ostream& stream, int total, bool filter) {
CallFrame* cf = this;
int i = -1;
while(cf) {
i++;
if(total > 0 && i == total) return;
if(NativeMethodFrame* nmf = cf->native_method_frame()) {
stream << static_cast<void*>(cf) << ": ";
NativeMethod* nm = try_as<NativeMethod>(nmf->get_object(nmf->method()));
if(nm && nm->name()->symbol_p()) {
stream << "capi:" << nm->name()->debug_str(state) << " at ";
stream << nm->file()->c_str(state);
} else {
stream << "unknown capi";
}
stream << std::endl;
cf = cf->previous;
continue;
}
if(!cf->compiled_code) {
cf = cf->previous;
continue;
}
if(filter && cf->compiled_code->kernel_method(state)) {
cf = cf->previous;
continue;
}
stream << static_cast<void*>(cf) << ": ";
if(cf->is_block_p(state)) {
stream << "__block__";
} else {
if(SingletonClass* sc = try_as<SingletonClass>(cf->module())) {
Object* obj = sc->attached_instance();
if(Module* mod = try_as<Module>(obj)) {
stream << mod->debug_str(state) << ".";
} else {
if(obj == G(main)) {
stream << "MAIN.";
} else {
stream << "#<" << obj->class_object(state)->debug_str(state) <<
":" << (void*)obj->id(state)->to_native() << ">.";
}
}
} else if(IncludedModule* im = try_as<IncludedModule>(cf->module())) {
stream << im->module()->debug_str(state) << "#";
} else {
Symbol* name;
std::string mod_name;
if(cf->module()->nil_p()) {
mod_name = cf->constant_scope()->module()->debug_str(state);
} else {
if((name = try_as<Symbol>(cf->module()->module_name()))) {
mod_name = name->debug_str(state);
} else if((name = try_as<Symbol>(
cf->constant_scope()->module()->module_name()))) {
mod_name = name->debug_str(state);
} else {
mod_name = "<anonymous module>";
}
}
stream << mod_name << "#";
}
Symbol* name = try_as<Symbol>(cf->name());
if(name) {
stream << name->debug_str(state);
} else {
stream << cf->compiled_code->name()->debug_str(state);
}
}
stream << " in ";
if(Symbol* file_sym = try_as<Symbol>(cf->compiled_code->file())) {
stream << file_sym->debug_str(state) << ":" << cf->line(state);
} else {
stream << "<unknown>";
}
stream << " (+" << cf->ip();
if(cf->is_inline_frame()) {
stream << " inline";
} else if(cf->jitted_p()) {
stream << " jit";
}
stream << ")";
stream << std::endl;
cf = cf->previous;
}
}
Symbol* CallFrame::file(STATE) {
if(compiled_code) {
return compiled_code->file();
} else {
return nil<Symbol>();
}
}
int CallFrame::line(STATE) {
if(!compiled_code) return -2; // trampoline context
return compiled_code->line(state, ip());
}
// Walks the CallFrame list to see if +scope+ is still running
bool CallFrame::scope_still_valid(VariableScope* scope) {
CallFrame* cur = this;
while(cur) {
if(cur->scope && cur->scope->on_heap() == scope) return true;
cur = cur->previous;
}
return false;
}
void CallFrame::jit_fixup(STATE, CallFrame* creator) {
VariableScope* parent = creator->promote_scope(state);
scope->set_parent(parent);
scope->set_block(creator->scope->block());
}
void CallFrame::dump() {
VM* vm = VM::current();
State state_obj(vm), *state = &state_obj;
std::cout << "<CallFrame:" << (void*)this << " ";
if(native_method_p()) {
std::cout << "capi>\n";
return;
}
if(is_inline_frame()) {
std::cout << "inline ";
}
if(is_block_p(state)) {
std::cout << "block ";
} else if(dispatch_data) {
std::cout << "name=" << name()->debug_str(state) << " ";
} else {
std::cout << "name=" << compiled_code->name()->debug_str(state) << " ";
}
std::cout << "ip=" << ip_ << " ";
std::cout << "line=" << line(state);
std::cout << ">\n";
}
Object* CallFrame::find_breakpoint(STATE) {
if(!compiled_code) return 0;
LookupTable* tbl = compiled_code->breakpoints();
if(tbl->nil_p()) return 0;
bool found = false;
Object* obj = tbl->fetch(state, Fixnum::from(ip()), &found);
if(found) return obj;
return 0;
}
/* For debugging. */
extern "C" {
void __printbt__(CallFrame* call_frame) {
State state(VM::current());
call_frame->print_backtrace(&state);
}
}
}