duke@435: /* duke@435: * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * duke@435: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, duke@435: * CA 95054 USA or visit www.sun.com if you need additional information or duke@435: * have any questions. duke@435: * duke@435: */ duke@435: duke@435: #include "incls/_precompiled.incl" duke@435: #include "incls/_javaCalls.cpp.incl" duke@435: duke@435: // ----------------------------------------------------- duke@435: // Implementation of JavaCallWrapper duke@435: duke@435: JavaCallWrapper::JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS) { duke@435: JavaThread* thread = (JavaThread *)THREAD; duke@435: bool clear_pending_exception = true; duke@435: duke@435: guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); duke@435: assert(!thread->owns_locks(), "must release all locks when leaving VM"); duke@435: guarantee(!thread->is_Compiler_thread(), "cannot make java calls from the compiler"); duke@435: _result = result; duke@435: duke@435: // Make sure that that the value of the higest_lock is at least the same as the current stackpointer, duke@435: // since, the Java code is highly likely to use locks. duke@435: // Use '(address)this' to guarantee that highest_lock address is conservative and inside our thread duke@435: thread->update_highest_lock((address)this); duke@435: duke@435: // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, duke@435: // since it can potentially block. duke@435: JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); duke@435: duke@435: // After this, we are official in JavaCode. This needs to be done before we change any of the thread local duke@435: // info, since we cannot find oops before the new information is set up completely. duke@435: ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_Java); duke@435: duke@435: // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state duke@435: // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions duke@435: // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state). duke@435: if (thread->has_special_runtime_exit_condition()) { duke@435: thread->handle_special_runtime_exit_condition(); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: clear_pending_exception = false; duke@435: } duke@435: } duke@435: duke@435: duke@435: // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing duke@435: // the JavaCallWrapper before the entry frame is on the stack. duke@435: _callee_method = callee_method(); duke@435: _receiver = receiver(); duke@435: duke@435: #ifdef CHECK_UNHANDLED_OOPS duke@435: THREAD->allow_unhandled_oop(&_callee_method); duke@435: THREAD->allow_unhandled_oop(&_receiver); duke@435: #endif // CHECK_UNHANDLED_OOPS duke@435: duke@435: _thread = (JavaThread *)thread; duke@435: _handles = _thread->active_handles(); // save previous handle block & Java frame linkage duke@435: duke@435: // For the profiler, the last_Java_frame information in thread must always be in duke@435: // legal state. We have no last Java frame if last_Java_sp == NULL so duke@435: // the valid transition is to clear _last_Java_sp and then reset the rest of duke@435: // the (platform specific) state. duke@435: duke@435: _anchor.copy(_thread->frame_anchor()); duke@435: _thread->frame_anchor()->clear(); duke@435: duke@435: debug_only(_thread->inc_java_call_counter()); duke@435: _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage duke@435: duke@435: assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL"); duke@435: duke@435: // clear any pending exception in thread (native calls start with no exception pending) duke@435: if(clear_pending_exception) { duke@435: _thread->clear_pending_exception(); duke@435: } duke@435: duke@435: if (_anchor.last_Java_sp() == NULL) { duke@435: _thread->record_base_of_stack_pointer(); duke@435: } duke@435: } duke@435: duke@435: duke@435: JavaCallWrapper::~JavaCallWrapper() { duke@435: assert(_thread == JavaThread::current(), "must still be the same thread"); duke@435: duke@435: // restore previous handle block & Java frame linkage duke@435: JNIHandleBlock *_old_handles = _thread->active_handles(); duke@435: _thread->set_active_handles(_handles); duke@435: duke@435: _thread->frame_anchor()->zap(); duke@435: duke@435: debug_only(_thread->dec_java_call_counter()); duke@435: duke@435: if (_anchor.last_Java_sp() == NULL) { duke@435: _thread->set_base_of_stack_pointer(NULL); duke@435: } duke@435: duke@435: duke@435: // Old thread-local info. has been restored. We are not back in the VM. duke@435: ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); duke@435: duke@435: // State has been restored now make the anchor frame visible for the profiler. duke@435: // Do this after the transition because this allows us to put an assert duke@435: // the Java->vm transition which checks to see that stack is not walkable duke@435: // on sparc/ia64 which will catch violations of the reseting of last_Java_frame duke@435: // invariants (i.e. _flags always cleared on return to Java) duke@435: duke@435: _thread->frame_anchor()->copy(&_anchor); duke@435: duke@435: // Release handles after we are marked as being inside the VM again, since this duke@435: // operation might block duke@435: JNIHandleBlock::release_block(_old_handles, _thread); duke@435: } duke@435: duke@435: duke@435: void JavaCallWrapper::oops_do(OopClosure* f) { duke@435: f->do_oop((oop*)&_callee_method); duke@435: f->do_oop((oop*)&_receiver); duke@435: handles()->oops_do(f); duke@435: } duke@435: duke@435: duke@435: // Helper methods duke@435: static BasicType runtime_type_from(JavaValue* result) { duke@435: switch (result->get_type()) { duke@435: case T_BOOLEAN: // fall through duke@435: case T_CHAR : // fall through duke@435: case T_SHORT : // fall through duke@435: case T_INT : // fall through duke@435: #ifndef _LP64 duke@435: case T_OBJECT : // fall through duke@435: case T_ARRAY : // fall through duke@435: #endif duke@435: case T_BYTE : // fall through duke@435: case T_VOID : return T_INT; duke@435: case T_LONG : return T_LONG; duke@435: case T_FLOAT : return T_FLOAT; duke@435: case T_DOUBLE : return T_DOUBLE; duke@435: #ifdef _LP64 duke@435: case T_ARRAY : // fall through duke@435: case T_OBJECT: return T_OBJECT; duke@435: #endif duke@435: } duke@435: ShouldNotReachHere(); duke@435: return T_ILLEGAL; duke@435: } duke@435: duke@435: // ===== object constructor calls ===== duke@435: duke@435: void JavaCalls::call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS) { duke@435: assert(method->name() == vmSymbols::object_initializer_name(), "Should only be called for default constructor"); duke@435: assert(method->signature() == vmSymbols::void_method_signature(), "Should only be called for default constructor"); duke@435: duke@435: instanceKlass* ik = instanceKlass::cast(method->method_holder()); duke@435: if (ik->is_initialized() && ik->has_vanilla_constructor()) { duke@435: // safe to skip constructor call duke@435: } else { duke@435: static JavaValue result(T_VOID); duke@435: JavaCallArguments args(receiver); duke@435: call(&result, method, &args, CHECK); duke@435: } duke@435: } duke@435: duke@435: // ============ Virtual calls ============ duke@435: duke@435: void JavaCalls::call_virtual(JavaValue* result, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS) { duke@435: CallInfo callinfo; duke@435: Handle receiver = args->receiver(); duke@435: KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); duke@435: LinkResolver::resolve_virtual_call( duke@435: callinfo, receiver, recvrKlass, spec_klass, name, signature, duke@435: KlassHandle(), false, true, CHECK); duke@435: methodHandle method = callinfo.selected_method(); duke@435: assert(method.not_null(), "should have thrown exception"); duke@435: duke@435: // Invoke the method duke@435: JavaCalls::call(result, method, args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, TRAPS) { duke@435: JavaCallArguments args(receiver); // One oop argument duke@435: call_virtual(result, spec_klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS) { duke@435: JavaCallArguments args(receiver); // One oop argument duke@435: args.push_oop(arg1); duke@435: call_virtual(result, spec_klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: duke@435: void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS) { duke@435: JavaCallArguments args(receiver); // One oop argument duke@435: args.push_oop(arg1); duke@435: args.push_oop(arg2); duke@435: call_virtual(result, spec_klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: // ============ Special calls ============ duke@435: duke@435: void JavaCalls::call_special(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS) { duke@435: CallInfo callinfo; duke@435: LinkResolver::resolve_special_call(callinfo, klass, name, signature, KlassHandle(), false, CHECK); duke@435: methodHandle method = callinfo.selected_method(); duke@435: assert(method.not_null(), "should have thrown exception"); duke@435: duke@435: // Invoke the method duke@435: JavaCalls::call(result, method, args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { duke@435: JavaCallArguments args(receiver); // One oop argument duke@435: call_special(result, klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS) { duke@435: JavaCallArguments args(receiver); // One oop argument duke@435: args.push_oop(arg1); duke@435: call_special(result, klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS) { duke@435: JavaCallArguments args(receiver); // One oop argument duke@435: args.push_oop(arg1); duke@435: args.push_oop(arg2); duke@435: call_special(result, klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: // ============ Static calls ============ duke@435: duke@435: void JavaCalls::call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS) { duke@435: CallInfo callinfo; duke@435: LinkResolver::resolve_static_call(callinfo, klass, name, signature, KlassHandle(), false, true, CHECK); duke@435: methodHandle method = callinfo.selected_method(); duke@435: assert(method.not_null(), "should have thrown exception"); duke@435: duke@435: // Invoke the method duke@435: JavaCalls::call(result, method, args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { duke@435: JavaCallArguments args; // No argument duke@435: call_static(result, klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS) { duke@435: JavaCallArguments args(arg1); // One oop argument duke@435: call_static(result, klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: void JavaCalls::call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS) { duke@435: JavaCallArguments args; // One oop argument duke@435: args.push_oop(arg1); duke@435: args.push_oop(arg2); duke@435: call_static(result, klass, name, signature, &args, CHECK); duke@435: } duke@435: duke@435: duke@435: // ------------------------------------------------- duke@435: // Implementation of JavaCalls (low level) duke@435: duke@435: duke@435: void JavaCalls::call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS) { duke@435: // Check if we need to wrap a potential OS exception handler around thread duke@435: // This is used for e.g. Win32 structured exception handlers duke@435: assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); duke@435: // Need to wrap each and everytime, since there might be native code down the duke@435: // stack that has installed its own exception handlers duke@435: os::os_exception_wrapper(call_helper, result, &method, args, THREAD); duke@435: } duke@435: duke@435: void JavaCalls::call_helper(JavaValue* result, methodHandle* m, JavaCallArguments* args, TRAPS) { duke@435: methodHandle method = *m; duke@435: JavaThread* thread = (JavaThread*)THREAD; duke@435: assert(thread->is_Java_thread(), "must be called by a java thread"); duke@435: assert(method.not_null(), "must have a method to call"); duke@435: assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); duke@435: assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); duke@435: duke@435: duke@435: CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) duke@435: poonam@900: // Verify the arguments poonam@900: poonam@900: if (CheckJNICalls) { poonam@900: args->verify(method, result->get_type(), thread); poonam@900: } poonam@900: else debug_only(args->verify(method, result->get_type(), thread)); duke@435: duke@435: // Ignore call if method is empty duke@435: if (method->is_empty_method()) { duke@435: assert(result->get_type() == T_VOID, "an empty method must return a void value"); duke@435: return; duke@435: } duke@435: duke@435: duke@435: #ifdef ASSERT duke@435: { klassOop holder = method->method_holder(); duke@435: // A klass might not be initialized since JavaCall's might be used during the executing of duke@435: // the . For example, a Thread.start might start executing on an object that is duke@435: // not fully initialized! (bad Java programming style) duke@435: assert(instanceKlass::cast(holder)->is_linked(), "rewritting must have taken place"); duke@435: } duke@435: #endif duke@435: duke@435: duke@435: assert(!thread->is_Compiler_thread(), "cannot compile from the compiler"); duke@435: if (CompilationPolicy::mustBeCompiled(method)) { duke@435: CompileBroker::compile_method(method, InvocationEntryBci, duke@435: methodHandle(), 0, "mustBeCompiled", CHECK); duke@435: } duke@435: duke@435: // Since the call stub sets up like the interpreter we call the from_interpreted_entry duke@435: // so we can go compiled via a i2c. Otherwise initial entry method will always duke@435: // run interpreted. duke@435: address entry_point = method->from_interpreted_entry(); duke@435: if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { duke@435: entry_point = method->interpreter_entry(); duke@435: } duke@435: duke@435: // Figure out if the result value is an oop or not (Note: This is a different value duke@435: // than result_type. result_type will be T_INT of oops. (it is about size) duke@435: BasicType result_type = runtime_type_from(result); duke@435: bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY); duke@435: duke@435: // NOTE: if we move the computation of the result_val_address inside duke@435: // the call to call_stub, the optimizer produces wrong code. duke@435: intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); duke@435: duke@435: // Find receiver duke@435: Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); duke@435: duke@435: // When we reenter Java, we need to reenable the yellow zone which duke@435: // might already be disabled when we are in VM. duke@435: if (thread->stack_yellow_zone_disabled()) { duke@435: thread->reguard_stack(); duke@435: } duke@435: duke@435: // Check that there are shadow pages available before changing thread state duke@435: // to Java duke@435: if (!os::stack_shadow_pages_available(THREAD, method)) { duke@435: // Throw stack overflow exception with preinitialized exception. duke@435: Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__); duke@435: return; duke@435: } else { duke@435: // Touch pages checked if the OS needs them to be touched to be mapped. duke@435: os::bang_stack_shadow_pages(); duke@435: } duke@435: duke@435: // do call duke@435: { JavaCallWrapper link(method, receiver, result, CHECK); duke@435: { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner duke@435: duke@435: StubRoutines::call_stub()( duke@435: (address)&link, duke@435: // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) duke@435: result_val_address, // see NOTE above (compiler problem) duke@435: result_type, duke@435: method(), duke@435: entry_point, duke@435: args->parameters(), duke@435: args->size_of_parameters(), duke@435: CHECK duke@435: ); duke@435: duke@435: result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) duke@435: // Preserve oop return value across possible gc points duke@435: if (oop_result_flag) { duke@435: thread->set_vm_result((oop) result->get_jobject()); duke@435: } duke@435: } duke@435: } // Exit JavaCallWrapper (can block - potential return oop must be preserved) duke@435: duke@435: // Check if a thread stop or suspend should be executed duke@435: // The following assert was not realistic. Thread.stop can set that bit at any moment. duke@435: //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); duke@435: duke@435: // Restore possible oop return duke@435: if (oop_result_flag) { duke@435: result->set_jobject((jobject)thread->vm_result()); duke@435: thread->set_vm_result(NULL); duke@435: } duke@435: } duke@435: duke@435: duke@435: //-------------------------------------------------------------------------------------- duke@435: // Implementation of JavaCallArguments duke@435: duke@435: intptr_t* JavaCallArguments::parameters() { duke@435: // First convert all handles to oops duke@435: for(int i = 0; i < _size; i++) { duke@435: if (_is_oop[i]) { duke@435: // Handle conversion duke@435: _value[i] = (intptr_t)Handle::raw_resolve((oop *)_value[i]); duke@435: } duke@435: // The parameters are moved to the parameters array to include the tags. duke@435: if (TaggedStackInterpreter) { duke@435: // Tags are interspersed with arguments. Tags are first. duke@435: int tagged_index = i*2; duke@435: _parameters[tagged_index] = _is_oop[i] ? frame::TagReference : duke@435: frame::TagValue; duke@435: _parameters[tagged_index+1] = _value[i]; duke@435: } duke@435: } duke@435: // Return argument vector duke@435: return TaggedStackInterpreter ? _parameters : _value; duke@435: } duke@435: duke@435: duke@435: class SignatureChekker : public SignatureIterator { duke@435: private: duke@435: bool *_is_oop; duke@435: int _pos; duke@435: BasicType _return_type; poonam@900: intptr_t* _value; poonam@900: Thread* _thread; duke@435: duke@435: public: duke@435: bool _is_return; duke@435: poonam@900: SignatureChekker(symbolHandle signature, BasicType return_type, bool is_static, bool* is_oop, intptr_t* value, Thread* thread) : SignatureIterator(signature) { duke@435: _is_oop = is_oop; duke@435: _is_return = false; duke@435: _return_type = return_type; duke@435: _pos = 0; poonam@900: _value = value; poonam@900: _thread = thread; poonam@900: duke@435: if (!is_static) { duke@435: check_value(true); // Receiver must be an oop duke@435: } duke@435: } duke@435: duke@435: void check_value(bool type) { duke@435: guarantee(_is_oop[_pos++] == type, "signature does not match pushed arguments"); duke@435: } duke@435: duke@435: void check_doing_return(bool state) { _is_return = state; } duke@435: duke@435: void check_return_type(BasicType t) { duke@435: guarantee(_is_return && t == _return_type, "return type does not match"); duke@435: } duke@435: duke@435: void check_int(BasicType t) { duke@435: if (_is_return) { duke@435: check_return_type(t); duke@435: return; duke@435: } duke@435: check_value(false); duke@435: } duke@435: duke@435: void check_double(BasicType t) { check_long(t); } duke@435: duke@435: void check_long(BasicType t) { duke@435: if (_is_return) { duke@435: check_return_type(t); duke@435: return; duke@435: } duke@435: duke@435: check_value(false); duke@435: check_value(false); duke@435: } duke@435: duke@435: void check_obj(BasicType t) { duke@435: if (_is_return) { duke@435: check_return_type(t); duke@435: return; duke@435: } poonam@900: poonam@900: // verify handle and the oop pointed to by handle poonam@900: int p = _pos; poonam@900: bool bad = false; poonam@900: // If argument is oop poonam@900: if (_is_oop[p]) { poonam@900: intptr_t v = _value[p]; poonam@900: if (v != 0 ) { poonam@900: size_t t = (size_t)v; poonam@933: bad = (t < (size_t)os::vm_page_size() ) || !Handle::raw_resolve((oop *)v)->is_oop_or_null(true); poonam@900: if (CheckJNICalls && bad) { poonam@900: ReportJNIFatalError((JavaThread*)_thread, "Bad JNI oop argument"); poonam@900: } poonam@900: } poonam@900: // for the regular debug case. poonam@900: assert(!bad, "Bad JNI oop argument"); poonam@900: } poonam@900: duke@435: check_value(true); duke@435: } duke@435: duke@435: void do_bool() { check_int(T_BOOLEAN); } duke@435: void do_char() { check_int(T_CHAR); } duke@435: void do_float() { check_int(T_FLOAT); } duke@435: void do_double() { check_double(T_DOUBLE); } duke@435: void do_byte() { check_int(T_BYTE); } duke@435: void do_short() { check_int(T_SHORT); } duke@435: void do_int() { check_int(T_INT); } duke@435: void do_long() { check_long(T_LONG); } duke@435: void do_void() { check_return_type(T_VOID); } duke@435: void do_object(int begin, int end) { check_obj(T_OBJECT); } duke@435: void do_array(int begin, int end) { check_obj(T_OBJECT); } duke@435: }; duke@435: poonam@900: duke@435: void JavaCallArguments::verify(methodHandle method, BasicType return_type, duke@435: Thread *thread) { duke@435: guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); duke@435: duke@435: // Treat T_OBJECT and T_ARRAY as the same duke@435: if (return_type == T_ARRAY) return_type = T_OBJECT; duke@435: duke@435: // Check that oop information is correct duke@435: symbolHandle signature (thread, method->signature()); duke@435: poonam@900: SignatureChekker sc(signature, return_type, method->is_static(),_is_oop, _value, thread); duke@435: sc.iterate_parameters(); duke@435: sc.check_doing_return(true); duke@435: sc.iterate_returntype(); duke@435: } duke@435: