void gc_set_gen_mode(Boolean status)
{
if(status){
gc_set_gen_flag();
gc_set_barrier_function(WB_REM_SOURCE_REF);
}else{
gc_clear_gen_flag();
gc_set_barrier_function(WB_REM_NIL);
}
HelperClass_set_GenMode(status);
}
/* gc start marking phase */
void gc_start_con_marking(GC *gc)
{
unsigned int num_marker;
num_marker = gc_get_marker_number(gc);
if(gc_is_kind(ALGO_CON_OTF_OBJ)) {
gc_enable_alloc_obj_live(gc);
gc_set_barrier_function(WB_REM_OBJ_SNAPSHOT);
gc_ms_start_con_mark((GC_MS*)gc, num_marker);
} else if(gc_is_kind(ALGO_CON_MOSTLY)) {
gc_set_barrier_function(WB_REM_SOURCE_OBJ);
gc_ms_start_mostly_con_mark((GC_MS*)gc, num_marker);
} else if(gc_is_kind(ALGO_CON_OTF_REF)) {
gc_enable_alloc_obj_live(gc);
gc_set_barrier_function(WB_REM_OLD_VAR);
gc_ms_start_con_mark((GC_MS*)gc, num_marker);
}
}
void wspace_last_otf_marker_work( Conclctor *last_marker ) {
GC *gc = last_marker->gc;
gc_reset_dirty_set(gc);
gc_set_barrier_function(WB_REM_NIL);
//INFO2("gc.con.info", "<stage 6>all markers finish ");
gc_con_update_stat_after_marking(gc); //calculate marked size
gc_clear_rootset(gc);
gc_prepare_sweeping(gc);
state_transformation( gc, GC_CON_TRACE_DONE, GC_CON_BEFORE_SWEEP );
}
static unsigned int gc_con_heap_full_mostly_con( GC *gc )
{
while( gc->gc_concurrent_status == GC_CON_START_MARKERS ) { // we should enumerate rootset after old rootset is traced
vm_thread_yield();
}
int64 final_start = time_now();
int disable_count = hythread_reset_suspend_disable();
gc_set_rootset_type(ROOTSET_IS_OBJ);
gc_prepare_rootset(gc);
gc_set_barrier_function(WB_REM_NIL); //in stw phase, so we can remove write barrier at any time
terminate_mostly_con_mark(); // terminate current mostly concurrent marking
//in the stop the world phase (only conclctors is running at the moment), so the spin lock will not lose more performance
while(gc->gc_concurrent_status == GC_CON_TRACING) {
vm_thread_yield(); //let the unfinished marker run
}
//final marking phase
gc_clear_conclctor_role(gc);
wspace_mostly_con_final_mark(gc);
/*just debugging*/
int64 final_time = time_now() - final_start;
INFO2("gc.scheduler", "[MOSTLY_CON] final marking time=" << final_time << " us");
gc_ms_get_current_heap_usage((GC_MS *)gc);
// start STW reclaiming heap
gc_con_update_stat_heap_exhausted(gc); // calculate util rate
gc_reset_mutator_context(gc);
if(!IGNORE_FINREF ) gc_set_obj_with_fin(gc);
gc_ms_reclaim_heap((GC_MS*)gc);
// reset after partial stop the world collection
gc_reset_after_con_collection(gc);
set_con_nil(gc);
vm_resume_threads_after();
hythread_set_suspend_disable(disable_count);
return GC_PARTIAL_PMSS;
}