void CompiledIC::set_to_clean() {
assert(SafepointSynchronize::is_at_safepoint() || CompiledIC_lock->is_locked() , "MT-unsafe call");
if (TraceInlineCacheClearing || TraceICs) {
tty->print_cr("IC@" INTPTR_FORMAT ": set to clean", instruction_address());
print();
}
address entry;
#ifdef COMPILER1
entry = is_optimized() ?
Runtime1::entry_for(Runtime1::resolve_invoke_opt_virtual_id) :
Runtime1::entry_for(Runtime1::resolve_invokevirtual_id);
#else
entry =
is_optimized()
? OptoRuntime::resolve_opt_virtual_call_Java()
: OptoRuntime::resolve_virtual_call_Java();
#endif
// A zombie transition will always be safe, since the oop has already been set to NULL, so
// we only need to patch the destination
bool safe_transition = is_optimized() || SafepointSynchronize::is_at_safepoint();
if (safe_transition) {
if (!is_optimized()) set_cached_oop(NULL);
// Kill any leftover stub we might have too
if (is_in_transition_state()) {
ICStub* old_stub = ICStub_from_destination_address(stub_address());
old_stub->clear();
}
set_ic_destination(entry);
} else {
// Unsafe transition - create stub.
InlineCacheBuffer::create_transition_stub(this, NULL, entry);
}
// We can't check this anymore. With lazy deopt we could have already
// cleaned this IC entry before we even return. This is possible if
// we ran out of space in the inline cache buffer trying to do the
// set_next and we safepointed to free up space. This is a benign
// race because the IC entry was complete when we safepointed so
// cleaning it immediately is harmless.
// assert(is_clean(), "sanity check");
}
// Clears the IC stub if the compiled IC is in transition state
void CompiledIC::clear_ic_stub() {
if (is_in_transition_state()) {
ICStub* stub = ICStub_from_destination_address(stub_address());
stub->clear();
}
}
