1 | /* |
2 | * Copyright (c) 1997, 2018, 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. |
22 | * |
23 | */ |
24 | |
25 | #include "precompiled.hpp" |
26 | #include "code/codeCache.hpp" |
27 | #include "interpreter/interpreter.hpp" |
28 | #include "oops/method.inline.hpp" |
29 | #include "oops/oop.inline.hpp" |
30 | #include "oops/symbol.hpp" |
31 | #include "runtime/frame.inline.hpp" |
32 | #include "runtime/rframe.hpp" |
33 | #include "runtime/vframe.hpp" |
34 | #include "runtime/vframe_hp.hpp" |
35 | |
36 | |
37 | static RFrame*const noCaller = (RFrame*) 0x1; // no caller (i.e., initial frame) |
38 | static RFrame*const noCallerYet = (RFrame*) 0x0; // caller not yet computed |
39 | |
40 | RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) : |
41 | _fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) { |
42 | _caller = (RFrame*)noCallerYet; |
43 | _invocations = 0; |
44 | _distance = 0; |
45 | } |
46 | |
47 | void RFrame::set_distance(int d) { |
48 | assert(is_compiled() || d >= 0, "should be positive" ); |
49 | _distance = d; |
50 | } |
51 | |
52 | InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee) |
53 | : RFrame(fr, thread, callee) { |
54 | RegisterMap map(thread, false); |
55 | _vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread)); |
56 | _method = _vf->method(); |
57 | assert( _vf->is_interpreted_frame(), "must be interpreted" ); |
58 | init(); |
59 | } |
60 | |
61 | InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, Method* m) |
62 | : RFrame(fr, thread, NULL) { |
63 | RegisterMap map(thread, false); |
64 | _vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread)); |
65 | _method = m; |
66 | |
67 | assert( _vf->is_interpreted_frame(), "must be interpreted" ); |
68 | init(); |
69 | } |
70 | |
71 | CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee) |
72 | : RFrame(fr, thread, callee) { |
73 | init(); |
74 | } |
75 | |
76 | CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread) |
77 | : RFrame(fr, thread, NULL) { |
78 | init(); |
79 | } |
80 | |
81 | DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee) |
82 | : InterpretedRFrame(fr, thread, callee) {} |
83 | |
84 | RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const callee) { |
85 | RFrame* rf = NULL; |
86 | int dist = callee ? callee->distance() : -1; |
87 | if (fr.is_interpreted_frame()) { |
88 | rf = new InterpretedRFrame(fr, thread, callee); |
89 | dist++; |
90 | } else if (fr.is_compiled_frame()) { |
91 | // Even deopted frames look compiled because the deopt |
92 | // is invisible until it happens. |
93 | rf = new CompiledRFrame(fr, thread, callee); |
94 | } else { |
95 | assert(false, "Unhandled frame type" ); |
96 | } |
97 | if (rf != NULL) { |
98 | rf->set_distance(dist); |
99 | rf->init(); |
100 | } |
101 | return rf; |
102 | } |
103 | |
104 | RFrame* RFrame::caller() { |
105 | if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller; // already computed caller |
106 | |
107 | // caller not yet computed; do it now |
108 | if (_fr.is_first_java_frame()) { |
109 | _caller = (RFrame*)noCaller; |
110 | return NULL; |
111 | } |
112 | |
113 | RegisterMap map(_thread, false); |
114 | frame sender = _fr.real_sender(&map); |
115 | if (sender.is_java_frame()) { |
116 | _caller = new_RFrame(sender, thread(), this); |
117 | return _caller; |
118 | } |
119 | |
120 | // Real caller is not java related |
121 | _caller = (RFrame*)noCaller; |
122 | return NULL; |
123 | } |
124 | |
125 | int InterpretedRFrame::cost() const { |
126 | return _method->code_size(); // fix this |
127 | //return _method->estimated_inline_cost(_receiverKlass); |
128 | } |
129 | |
130 | int CompiledRFrame::cost() const { |
131 | CompiledMethod* nm = top_method()->code(); |
132 | if (nm != NULL) { |
133 | return nm->insts_size(); |
134 | } else { |
135 | return top_method()->code_size(); |
136 | } |
137 | } |
138 | |
139 | void CompiledRFrame::init() { |
140 | RegisterMap map(thread(), false); |
141 | vframe* vf = vframe::new_vframe(&_fr, &map, thread()); |
142 | assert(vf->is_compiled_frame(), "must be compiled" ); |
143 | _nm = compiledVFrame::cast(vf)->code()->as_nmethod(); |
144 | vf = vf->top(); |
145 | _vf = javaVFrame::cast(vf); |
146 | _method = CodeCache::find_nmethod(_fr.pc())->method(); |
147 | assert(_method, "should have found a method" ); |
148 | #ifndef PRODUCT |
149 | _invocations = _method->compiled_invocation_count(); |
150 | #endif |
151 | } |
152 | |
153 | void InterpretedRFrame::init() { |
154 | _invocations = _method->invocation_count() + _method->backedge_count(); |
155 | } |
156 | |
157 | void RFrame::print(const char* kind) { |
158 | #ifndef PRODUCT |
159 | #if COMPILER2_OR_JVMCI |
160 | int cnt = top_method()->interpreter_invocation_count(); |
161 | #else |
162 | int cnt = top_method()->invocation_count(); |
163 | #endif |
164 | tty->print("%3d %s " , _num, is_interpreted() ? "I" : "C" ); |
165 | top_method()->print_short_name(tty); |
166 | tty->print_cr(": inv=%5d(%d) cst=%4d" , _invocations, cnt, cost()); |
167 | #endif |
168 | } |
169 | |
170 | void CompiledRFrame::print() { |
171 | RFrame::print("comp" ); |
172 | } |
173 | |
174 | void InterpretedRFrame::print() { |
175 | RFrame::print("int." ); |
176 | } |
177 | |
178 | void DeoptimizedRFrame::print() { |
179 | RFrame::print("deopt." ); |
180 | } |
181 | |