void GCTaskThread::print_task_time_stamps() {
assert(PrintGCTaskTimeStamps, "Sanity");
assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)");
tty->print_cr("GC-Thread %u entries: %d", id(), _time_stamp_index);
for(uint i=0; i<_time_stamp_index; i++) {
GCTaskTimeStamp* time_stamp = time_stamp_at(i);
tty->print_cr("\t[ %s " INT64_FORMAT " " INT64_FORMAT " ]",
time_stamp->name(),
time_stamp->entry_time(),
time_stamp->exit_time());
}
// Reset after dumping the data
_time_stamp_index = 0;
}
void GCTaskThread::print_task_time_stamps() {
assert(PrintGCTaskTimeStamps, "Sanity");
assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)");
gclog_or_tty->print_cr("GC-Thread %u entries: %d",id(),_time_stamp_index);
for(uint i=0; i<_time_stamp_index; i++) {
GCTaskTimeStamp* time_stamp = time_stamp_at(i);
if ( 1 ) {
gclog_or_tty->print_cr("\t[ %s %lld %lld %lld usecs ]",
time_stamp->name(),
time_stamp->entry_time(),
time_stamp->exit_time(),
((time_stamp->exit_time()-time_stamp->entry_time())*1000000)/os::elapsed_frequency());
} else {
gclog_or_tty->print_cr("\t[ %s %lld %lld ]",
time_stamp->name(),
time_stamp->entry_time(),
time_stamp->exit_time());
}
}
// Reset after dumping the data
_time_stamp_index = 0;
}
void GCTaskThread::run() {
// Set up the thread for stack overflow support
this->initialize_thread_local_storage();
this->set_gcthread_lvb_trap_vector();
this->set_gc_mode(true);
this->set_vm_tag(VM_GCTask_tag);
// Part of thread setup.
// ??? Are these set up once here to make subsequent ones fast?
HandleMark hm_outer;
ResourceMark rm_outer;
if ( manager()->gpgc_verify() ) {
GPGC_VerifyClosure::task_thread_loop(this, which());
return;
}
TimeStamp timer;
for (;/* ever */;) {
// These are so we can flush the resources allocated in the inner loop.
HandleMark hm_inner;
ResourceMark rm_inner;
for (; /* break */; ) {
// This will block until there is a task to be gotten.
GCTask* task = manager()->get_task(which());
if ( _new_gc_mode_requested ) {
_new_gc_mode_requested = false;
this->set_gc_mode(_new_gc_mode);
}
// In case the update is costly
if (PrintGCTaskTimeStamps) {
timer.update();
}
jlong entry_time = timer.ticks();
const char*name=task->name();
GCTask::Kind::kind task_kind = task->kind();
task->do_it(manager(), which());
manager()->note_completion(task_kind,which());
if (PrintGCTaskTimeStamps) {
assert(_time_stamps != NULL, "Sanity (PrintGCTaskTimeStamps set late?)");
timer.update();
GCTaskTimeStamp* time_stamp = time_stamp_at(_time_stamp_index++);
time_stamp->set_name(name);
time_stamp->set_entry_time(entry_time);
time_stamp->set_exit_time(timer.ticks());
}
// Check if we should release our inner resources.
if (manager()->should_release_resources(which())) {
manager()->note_release(which());
break;
}
}
}
}
