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8057535: add a thread extension class

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Reviewed-by: mgerdin, bdelsart, jcoomes
This commit is contained in:
Staffan Larsen 2014-09-04 11:21:08 +02:00
parent bc3ffaa29f
commit fed95a6860
5 changed files with 219 additions and 132 deletions
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21
hotspot/src/share/vm/runtime/thread.cpp
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@ -826,6 +826,7 @@ void Thread::print_on(outputStream* st) const {
st->print("os_prio=%d ", os_prio);
}
st->print("tid=" INTPTR_FORMAT " ", this);
ext().print_on(st);
osthread()->print_on(st);
}
debug_only(if (WizardMode) print_owned_locks_on(st);)
@ -2964,6 +2965,8 @@ void JavaThread::prepare(jobject jni_thread, ThreadPriority prio) {
// Push the Java priority down to the native thread; needs Threads_lock
Thread::set_priority(this, prio);
prepare_ext();
// Add the new thread to the Threads list and set it in motion.
// We must have threads lock in order to call Threads::add.
// It is crucial that we do not block before the thread is
@ -3795,6 +3798,24 @@ void Threads::create_vm_init_libraries() {
}
}
JavaThread* Threads::find_java_thread_from_java_tid(jlong java_tid) {
assert(Threads_lock->owned_by_self(), "Must hold Threads_lock");
JavaThread* java_thread = NULL;
// Sequential search for now. Need to do better optimization later.
for (JavaThread* thread = Threads::first(); thread != NULL; thread = thread->next()) {
oop tobj = thread->threadObj();
if (!thread->is_exiting() &&
tobj != NULL &&
java_tid == java_lang_Thread::thread_id(tobj)) {
java_thread = thread;
break;
}
}
return java_thread;
}
// Last thread running calls java.lang.Shutdown.shutdown()
void JavaThread::invoke_shutdown_hooks() {
HandleMark hm(this);