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comparison src/share/vm/runtime/sharedRuntime.cpp @ 1204:18a389214829

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6921352: JSR 292 needs its own deopt handler Summary: We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not. Reviewed-by: never, jrose
author twisti
date Mon, 01 Feb 2010 19:29:46 +0100
parents 5f24d0319e54
children 5fcfaa1ad96f
comparison
equal deleted inserted replaced
1203:844a9d73ec22 1204:18a389214829
1031 // MethodHandle invokes don't have a CompiledIC and should always 1031 // MethodHandle invokes don't have a CompiledIC and should always
1032 // simply redispatch to the callee_target. 1032 // simply redispatch to the callee_target.
1033 address sender_pc = caller_frame.pc(); 1033 address sender_pc = caller_frame.pc();
1034 CodeBlob* sender_cb = caller_frame.cb(); 1034 CodeBlob* sender_cb = caller_frame.cb();
1035 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); 1035 nmethod* sender_nm = sender_cb->as_nmethod_or_null();
1036 bool is_mh_invoke_via_adapter = false; // Direct c2c call or via adapter?
1037 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) {
1038 // If the callee_target is set, then we have come here via an i2c
1039 // adapter.
1040 methodOop callee = thread->callee_target();
1041 if (callee != NULL) {
1042 assert(callee->is_method(), "sanity");
1043 is_mh_invoke_via_adapter = true;
1044 }
1045 }
1036 1046
1037 if (caller_frame.is_interpreted_frame() || 1047 if (caller_frame.is_interpreted_frame() ||
1038 caller_frame.is_entry_frame() || 1048 caller_frame.is_entry_frame() ||
1039 (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc))) { 1049 is_mh_invoke_via_adapter) {
1040 methodOop callee = thread->callee_target(); 1050 methodOop callee = thread->callee_target();
1041 guarantee(callee != NULL && callee->is_method(), "bad handshake"); 1051 guarantee(callee != NULL && callee->is_method(), "bad handshake");
1042 thread->set_vm_result(callee); 1052 thread->set_vm_result(callee);
1043 thread->set_callee_target(NULL); 1053 thread->set_callee_target(NULL);
1044 return callee->get_c2i_entry(); 1054 return callee->get_c2i_entry();
1415 CodeBlob* callee = CodeCache::find_blob(destination); 1425 CodeBlob* callee = CodeCache::find_blob(destination);
1416 // callee == cb seems weird. It means calling interpreter thru stub. 1426 // callee == cb seems weird. It means calling interpreter thru stub.
1417 if (callee == cb || callee->is_adapter_blob()) { 1427 if (callee == cb || callee->is_adapter_blob()) {
1418 // static call or optimized virtual 1428 // static call or optimized virtual
1419 if (TraceCallFixup) { 1429 if (TraceCallFixup) {
1420 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); 1430 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc);
1421 moop->print_short_name(tty); 1431 moop->print_short_name(tty);
1422 tty->print_cr(" to " INTPTR_FORMAT, entry_point); 1432 tty->print_cr(" to " INTPTR_FORMAT, entry_point);
1423 } 1433 }
1424 call->set_destination_mt_safe(entry_point); 1434 call->set_destination_mt_safe(entry_point);
1425 } else { 1435 } else {
1431 // assert is too strong could also be resolve destinations. 1441 // assert is too strong could also be resolve destinations.
1432 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); 1442 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be");
1433 } 1443 }
1434 } else { 1444 } else {
1435 if (TraceCallFixup) { 1445 if (TraceCallFixup) {
1436 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); 1446 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc);
1437 moop->print_short_name(tty); 1447 moop->print_short_name(tty);
1438 tty->print_cr(" to " INTPTR_FORMAT, entry_point); 1448 tty->print_cr(" to " INTPTR_FORMAT, entry_point);
1439 } 1449 }
1440 } 1450 }
1441 } 1451 }