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vm: add code block marking to full_collector.cpp

db4
Slava Pestov 2009-10-08 00:23:29 -05:00
parent 6939759f46
commit db29d60e8e
2 changed files with 75 additions and 0 deletions
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71
vm/full_collector.cpp
View File

@ -7,6 +7,77 @@ full_collector::full_collector(factor_vm *myvm_, bool trace_contexts_p_) :
copying_collector<tenured_space,full_policy>(myvm_,myvm_->data->tenured,full_policy(myvm_)),
trace_contexts_p(trace_contexts_p_) {}
struct stack_frame_marker {
factor_vm *myvm;
full_collector *collector;
explicit stack_frame_marker(full_collector *collector_) :
myvm(collector_->myvm), collector(collector_) {}
void operator()(stack_frame *frame)
{
collector->mark_code_block(myvm->frame_code(frame));
}
};
/* Mark code blocks executing in currently active stack frames. */
void full_collector::mark_active_blocks(context *stacks)
{
cell top = (cell)stacks->callstack_top;
cell bottom = (cell)stacks->callstack_bottom;
stack_frame_marker marker(this);
myvm->iterate_callstack(top,bottom,marker);
}
void full_collector::mark_object_code_block(object *object)
{
switch(object->h.hi_tag())
{
case WORD_TYPE:
{
word *w = (word *)object;
if(w->code)
mark_code_block(w->code);
if(w->profiling)
mark_code_block(w->profiling);
break;
}
case QUOTATION_TYPE:
{
quotation *q = (quotation *)object;
if(q->code)
mark_code_block(q->code);
break;
}
case CALLSTACK_TYPE:
{
callstack *stack = (callstack *)object;
stack_frame_marker marker(this);
myvm->iterate_callstack_object(stack,marker);
break;
}
}
}
/* Trace all literals referenced from a code block. Only for aging and nursery collections */
void full_collector::trace_literal_references(code_block *compiled)
{
this->trace_handle(&compiled->owner);
this->trace_handle(&compiled->literals);
this->trace_handle(&compiled->relocation);
}
/* Mark all literals referenced from a word XT. Only for tenured
collections */
void full_collector::mark_code_block(code_block *compiled)
{
myvm->check_code_address((cell)compiled);
this->myvm->code->mark_block(compiled);
trace_literal_references(compiled);
}
void full_collector::go()
{
trace_roots();

4
vm/full_collector.hpp
View File

@ -17,6 +17,10 @@ struct full_collector : copying_collector<tenured_space,full_policy> {
bool trace_contexts_p;
full_collector(factor_vm *myvm_, bool trace_contexts_p_);
void mark_active_blocks(context *stacks);
void mark_object_code_block(object *object);
void trace_literal_references(code_block *compiled);
void mark_code_block(code_block *compiled);
void go();
};