Fri, 02 Sep 2011 20:58:21 -0700
7071307: MethodHandle bimorphic inlining should consider the frequency
Reviewed-by: twisti, roland, kvn, iveresov
1 /*
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
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23 */
25 #include "precompiled.hpp"
26 #include "ci/ciClassList.hpp"
27 #include "ci/ciInstance.hpp"
28 #include "ci/ciMethodData.hpp"
29 #include "ci/ciMethodHandle.hpp"
30 #include "ci/ciUtilities.hpp"
31 #include "prims/methodHandleWalk.hpp"
32 #include "prims/methodHandles.hpp"
34 // ciMethodHandle
36 // ------------------------------------------------------------------
37 // ciMethodHandle::get_adapter
38 //
39 // Return an adapter for this MethodHandle.
40 ciMethod* ciMethodHandle::get_adapter_impl(bool is_invokedynamic) {
41 VM_ENTRY_MARK;
42 Handle h(get_oop());
43 methodHandle callee(_callee->get_methodOop());
44 assert(callee->is_method_handle_invoke(), "");
45 oop mt1 = callee->method_handle_type();
46 oop mt2 = java_lang_invoke_MethodHandle::type(h());
47 if (!java_lang_invoke_MethodType::equals(mt1, mt2)) {
48 if (PrintMiscellaneous && (Verbose || WizardMode)) {
49 tty->print_cr("ciMethodHandle::get_adapter: types not equal");
50 mt1->print(); mt2->print();
51 }
52 return NULL;
53 }
54 // We catch all exceptions here that could happen in the method
55 // handle compiler and stop the VM.
56 MethodHandleCompiler mhc(h, callee->name(), callee->signature(), _profile.count(), is_invokedynamic, THREAD);
57 if (!HAS_PENDING_EXCEPTION) {
58 methodHandle m = mhc.compile(THREAD);
59 if (!HAS_PENDING_EXCEPTION) {
60 return CURRENT_ENV->get_object(m())->as_method();
61 }
62 }
63 if (PrintMiscellaneous && (Verbose || WizardMode)) {
64 tty->print("*** ciMethodHandle::get_adapter => ");
65 PENDING_EXCEPTION->print();
66 tty->print("*** get_adapter (%s): ", is_invokedynamic ? "indy" : "mh"); ((ciObject*)this)->print();
67 }
68 CLEAR_PENDING_EXCEPTION;
69 return NULL;
70 }
72 // ------------------------------------------------------------------
73 // ciMethodHandle::get_adapter
74 //
75 // Return an adapter for this MethodHandle.
76 ciMethod* ciMethodHandle::get_adapter(bool is_invokedynamic) {
77 ciMethod* result = get_adapter_impl(is_invokedynamic);
78 if (result) {
79 // Fake up the MDO maturity.
80 ciMethodData* mdo = result->method_data();
81 if (mdo != NULL && _caller->method_data() != NULL && _caller->method_data()->is_mature()) {
82 mdo->set_mature();
83 }
84 }
85 return result;
86 }
89 #ifndef PRODUCT
90 // ------------------------------------------------------------------
91 // ciMethodHandle::print_chain_impl
92 //
93 // Implementation of the print method.
94 void ciMethodHandle::print_chain_impl(outputStream* st) {
95 ASSERT_IN_VM;
96 MethodHandleChain::print(get_oop());
97 }
100 // ------------------------------------------------------------------
101 // ciMethodHandle::print_chain
102 //
103 // Implementation of the print_chain method.
104 void ciMethodHandle::print_chain(outputStream* st) {
105 GUARDED_VM_ENTRY(print_chain_impl(st););
106 }
107 #endif