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comparison src/share/vm/classfile/systemDictionary.cpp @ 1602:136b78722a08

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6939203: JSR 292 needs method handle constants Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode. Reviewed-by: twisti, never
author jrose
date Wed, 09 Jun 2010 18:50:45 -0700
parents c18cbe5936b8
children 083fde3b838e
comparison
equal deleted inserted replaced
1585:49fac4acd688 1602:136b78722a08
2452 // report back to the caller with the MethodType and the "on_bcp" flag 2452 // report back to the caller with the MethodType and the "on_bcp" flag
2453 return_bcp_flag = is_on_bcp; 2453 return_bcp_flag = is_on_bcp;
2454 return Handle(THREAD, (oop) result.get_jobject()); 2454 return Handle(THREAD, (oop) result.get_jobject());
2455 } 2455 }
2456 2456
2457 // Ask Java code to find or construct a method handle constant.
2458 Handle SystemDictionary::link_method_handle_constant(KlassHandle caller,
2459 int ref_kind, //e.g., JVM_REF_invokeVirtual
2460 KlassHandle callee,
2461 symbolHandle name_sym,
2462 symbolHandle signature,
2463 TRAPS) {
2464 Handle empty;
2465 Handle name = java_lang_String::create_from_symbol(name_sym(), CHECK_(empty));
2466 Handle type;
2467 if (signature->utf8_length() > 0 && signature->byte_at(0) == '(') {
2468 bool ignore_is_on_bcp = false;
2469 type = find_method_handle_type(signature, caller, ignore_is_on_bcp, CHECK_(empty));
2470 } else {
2471 SignatureStream ss(signature(), false);
2472 if (!ss.is_done()) {
2473 oop mirror = ss.as_java_mirror(caller->class_loader(), caller->protection_domain(),
2474 SignatureStream::NCDFError, CHECK_(empty));
2475 type = Handle(THREAD, mirror);
2476 ss.next();
2477 if (!ss.is_done()) type = Handle(); // error!
2478 }
2479 }
2480 if (type.is_null()) {
2481 THROW_MSG_(vmSymbols::java_lang_LinkageError(), "bad signature", empty);
2482 }
2483
2484 // call sun.dyn.MethodHandleNatives::linkMethodHandleConstant(Class caller, int refKind, Class callee, String name, Object type) -> MethodHandle
2485 JavaCallArguments args;
2486 args.push_oop(caller->java_mirror()); // the referring class
2487 args.push_int(ref_kind);
2488 args.push_oop(callee->java_mirror()); // the target class
2489 args.push_oop(name());
2490 args.push_oop(type());
2491 JavaValue result(T_OBJECT);
2492 JavaCalls::call_static(&result,
2493 SystemDictionary::MethodHandleNatives_klass(),
2494 vmSymbols::linkMethodHandleConstant_name(),
2495 vmSymbols::linkMethodHandleConstant_signature(),
2496 &args, CHECK_(empty));
2497 return Handle(THREAD, (oop) result.get_jobject());
2498 }
2457 2499
2458 // Ask Java code to find or construct a java.dyn.CallSite for the given 2500 // Ask Java code to find or construct a java.dyn.CallSite for the given
2459 // name and signature, as interpreted relative to the given class loader. 2501 // name and signature, as interpreted relative to the given class loader.
2460 Handle SystemDictionary::make_dynamic_call_site(Handle bootstrap_method, 2502 Handle SystemDictionary::make_dynamic_call_site(Handle bootstrap_method,
2461 symbolHandle name, 2503 symbolHandle name,