Mercurial > hg > truffle
annotate src/share/vm/runtime/rframe.cpp @ 9126:bc26f978b0ce
HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly
don't use the (wrong) cached value, but ask the runtime on each request.
Fixes regression on xml.* benchmarks @ specjvm2008. The problem was:
After the constructor of Object was deoptimized due to an assumption violation,
it was recompiled again after some time. However, on recompilation, the value
of hasFinalizeSubclass for the class was not updated and it was compiled again
with a, now wrong, assumption, which then triggers deoptimization again.
This was repeated until it hit the recompilation limit (defined by
PerMethodRecompilationCutoff), and therefore only executed by the interpreter
from now on, causing the performance regression.
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Mon, 15 Apr 2013 19:54:58 +0200 |
parents | 18a5539bf19b |
children | be896a1983c0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "oops/oop.inline.hpp" | |
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28 #include "oops/symbol.hpp" |
1972 | 29 #include "runtime/frame.inline.hpp" |
30 #include "runtime/rframe.hpp" | |
31 #include "runtime/vframe.hpp" | |
32 #include "runtime/vframe_hp.hpp" | |
0 | 33 |
34 | |
35 static RFrame*const noCaller = (RFrame*) 0x1; // no caller (i.e., initial frame) | |
36 static RFrame*const noCallerYet = (RFrame*) 0x0; // caller not yet computed | |
37 | |
38 RFrame::RFrame(frame fr, JavaThread* thread, RFrame*const callee) : | |
39 _fr(fr), _thread(thread), _callee(callee), _num(callee ? callee->num() + 1 : 0) { | |
40 _caller = (RFrame*)noCallerYet; | |
41 _invocations = 0; | |
42 _distance = 0; | |
43 } | |
44 | |
45 void RFrame::set_distance(int d) { | |
46 assert(is_compiled() || d >= 0, "should be positive"); | |
47 _distance = d; | |
48 } | |
49 | |
50 InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, RFrame*const callee) | |
51 : RFrame(fr, thread, callee) { | |
52 RegisterMap map(thread, false); | |
53 _vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread)); | |
54 _method = methodHandle(thread, _vf->method()); | |
55 assert( _vf->is_interpreted_frame(), "must be interpreted"); | |
56 init(); | |
57 } | |
58 | |
59 InterpretedRFrame::InterpretedRFrame(frame fr, JavaThread* thread, methodHandle m) | |
60 : RFrame(fr, thread, NULL) { | |
61 RegisterMap map(thread, false); | |
62 _vf = javaVFrame::cast(vframe::new_vframe(&_fr, &map, thread)); | |
63 _method = m; | |
64 | |
65 assert( _vf->is_interpreted_frame(), "must be interpreted"); | |
66 init(); | |
67 } | |
68 | |
69 CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread, RFrame*const callee) | |
70 : RFrame(fr, thread, callee) { | |
71 init(); | |
72 } | |
73 | |
74 CompiledRFrame::CompiledRFrame(frame fr, JavaThread* thread) | |
75 : RFrame(fr, thread, NULL) { | |
76 init(); | |
77 } | |
78 | |
79 DeoptimizedRFrame::DeoptimizedRFrame(frame fr, JavaThread* thread, RFrame*const callee) | |
80 : InterpretedRFrame(fr, thread, callee) {} | |
81 | |
82 RFrame* RFrame::new_RFrame(frame fr, JavaThread* thread, RFrame*const callee) { | |
83 RFrame* rf; | |
84 int dist = callee ? callee->distance() : -1; | |
85 if (fr.is_interpreted_frame()) { | |
86 rf = new InterpretedRFrame(fr, thread, callee); | |
87 dist++; | |
88 } else if (fr.is_compiled_frame()) { | |
89 // Even deopted frames look compiled because the deopt | |
90 // is invisible until it happens. | |
91 rf = new CompiledRFrame(fr, thread, callee); | |
92 } else { | |
93 assert(false, "Unhandled frame type"); | |
94 } | |
95 rf->set_distance(dist); | |
96 rf->init(); | |
97 return rf; | |
98 } | |
99 | |
100 RFrame* RFrame::caller() { | |
101 if (_caller != noCallerYet) return (_caller == noCaller) ? NULL : _caller; // already computed caller | |
102 | |
103 // caller not yet computed; do it now | |
104 if (_fr.is_first_java_frame()) { | |
105 _caller = (RFrame*)noCaller; | |
106 return NULL; | |
107 } | |
108 | |
109 RegisterMap map(_thread, false); | |
110 frame sender = _fr.real_sender(&map); | |
111 if (sender.is_java_frame()) { | |
112 _caller = new_RFrame(sender, thread(), this); | |
113 return _caller; | |
114 } | |
115 | |
116 // Real caller is not java related | |
117 _caller = (RFrame*)noCaller; | |
118 return NULL; | |
119 } | |
120 | |
121 int InterpretedRFrame::cost() const { | |
122 return _method->code_size(); // fix this | |
123 //return _method->estimated_inline_cost(_receiverKlass); | |
124 } | |
125 | |
126 int CompiledRFrame::cost() const { | |
127 nmethod* nm = top_method()->code(); | |
128 if (nm != NULL) { | |
1748 | 129 return nm->insts_size(); |
0 | 130 } else { |
131 return top_method()->code_size(); | |
132 } | |
133 } | |
134 | |
135 void CompiledRFrame::init() { | |
136 RegisterMap map(thread(), false); | |
137 vframe* vf = vframe::new_vframe(&_fr, &map, thread()); | |
138 assert(vf->is_compiled_frame(), "must be compiled"); | |
139 _nm = compiledVFrame::cast(vf)->code(); | |
140 vf = vf->top(); | |
141 _vf = javaVFrame::cast(vf); | |
142 _method = methodHandle(thread(), CodeCache::find_nmethod(_fr.pc())->method()); | |
143 assert(_method(), "should have found a method"); | |
144 #ifndef PRODUCT | |
145 _invocations = _method->compiled_invocation_count(); | |
146 #endif | |
147 } | |
148 | |
149 void InterpretedRFrame::init() { | |
150 _invocations = _method->invocation_count() + _method->backedge_count(); | |
151 } | |
152 | |
153 void RFrame::print(const char* kind) { | |
154 #ifndef PRODUCT | |
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More diff vs hsx24 optimizations.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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155 #if defined(COMPILER2) || defined(GRAAL) |
0 | 156 int cnt = top_method()->interpreter_invocation_count(); |
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More diff vs hsx24 optimizations.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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157 #else |
18a5539bf19b
More diff vs hsx24 optimizations.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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158 int cnt = top_method()->invocation_count(); |
18a5539bf19b
More diff vs hsx24 optimizations.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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159 #endif |
0 | 160 tty->print("%3d %s ", _num, is_interpreted() ? "I" : "C"); |
161 top_method()->print_short_name(tty); | |
162 tty->print_cr(": inv=%5d(%d) cst=%4d", _invocations, cnt, cost()); | |
163 #endif | |
164 } | |
165 | |
166 void CompiledRFrame::print() { | |
167 RFrame::print("comp"); | |
168 } | |
169 | |
170 void InterpretedRFrame::print() { | |
171 RFrame::print("int."); | |
172 } | |
173 | |
174 void DeoptimizedRFrame::print() { | |
175 RFrame::print("deopt."); | |
176 } |