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8136421: JEP 243: Java-Level JVM Compiler Interface

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Reviewed-by: ihse, alanb, roland, coleenp, iveresov, kvn, kbarrett
This commit is contained in:
Christian Thalinger 2015-10-08 12:49:30 -10:00
parent f5b4bb46f5
commit 16526e000e
505 changed files with 50394 additions and 915 deletions
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45
hotspot/src/share/vm/code/oopRecorder.cpp
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@ -157,3 +157,48 @@ template <class T> int ValueRecorder<T>::maybe_find_index(T h) {
// Explicitly instantiate these types
template class ValueRecorder<Metadata*>;
template class ValueRecorder<jobject>;
oop ObjectLookup::ObjectEntry::oop_value() const { return JNIHandles::resolve(_value); }
ObjectLookup::ObjectLookup(): _gc_count(Universe::heap()->total_collections()), _values(4) {}
void ObjectLookup::maybe_resort() {
// The values are kept sorted by address which may be invalidated
// after a GC, so resort if a GC has occurred since last time.
if (_gc_count != Universe::heap()->total_collections()) {
_gc_count = Universe::heap()->total_collections();
_values.sort(sort_by_address);
}
}
int ObjectLookup::sort_by_address(oop a, oop b) {
if (b > a) return 1;
if (a > b) return -1;
return 0;
}
int ObjectLookup::sort_by_address(ObjectEntry* a, ObjectEntry* b) {
return sort_by_address(a->oop_value(), b->oop_value());
}
int ObjectLookup::sort_oop_by_address(oop const& a, ObjectEntry const& b) {
return sort_by_address(a, b.oop_value());
}
int ObjectLookup::find_index(jobject handle, OopRecorder* oop_recorder) {
if (handle == NULL) {
return 0;
}
oop object = JNIHandles::resolve(handle);
maybe_resort();
bool found;
int location = _values.find_sorted<oop, sort_oop_by_address>(object, found);
if (!found) {
jobject handle = JNIHandles::make_local(object);
ObjectEntry r(handle, oop_recorder->allocate_oop_index(handle));
_values.insert_before(location, r);
return r.index();
}
return _values.at(location).index();
}