void InlineCacheBuffer::create_transition_stub(CompiledIC *ic, oop cached_oop, address entry) {
assert(!SafepointSynchronize::is_at_safepoint(), "should not be called during a safepoint");
assert (CompiledIC_lock->is_locked(), "");
assert(cached_oop == NULL || cached_oop->is_perm(), "must belong to perm. space");
if (TraceICBuffer) { tty->print_cr(" create transition stub for " INTPTR_FORMAT, ic->instruction_address()); }
// If an transition stub is already associate with the inline cache, then we remove the association.
if (ic->is_in_transition_state()) {
ICStub* old_stub = ICStub_from_destination_address(ic->stub_address());
old_stub->clear();
}
// allocate and initialize new "out-of-line" inline-cache
ICStub* ic_stub = get_next_stub();
ic_stub->set_stub(ic, cached_oop, entry);
// Update inline cache in nmethod to point to new "out-of-line" allocated inline cache
ic->set_ic_destination(ic_stub->code_begin());
set_next_stub(new_ic_stub()); // can cause safepoint synchronization
}
void InlineCacheBuffer::init_next_stub() {
ICStub* ic_stub = (ICStub*)buffer()->request_committed (ic_stub_code_size());
assert (ic_stub != NULL, "no room for a single stub");
set_next_stub(ic_stub);
}