1 /*
2 * Copyright (c) 2012, 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 package jdk.vm.ci.hotspot;
24
25 import jdk.vm.ci.meta.DeoptimizationReason;
26 import jdk.vm.ci.meta.JavaMethodProfile;
27 import jdk.vm.ci.meta.JavaTypeProfile;
28 import jdk.vm.ci.meta.ProfilingInfo;
29 import jdk.vm.ci.meta.TriState;
30
31 public final class HotSpotProfilingInfo implements ProfilingInfo, HotSpotProxified {
32
33 // private static final DebugMetric metricInsufficentSpace =
34 // Debug.metric("InsufficientSpaceForProfilingData");
35
36 private final HotSpotMethodData methodData;
37 private final HotSpotResolvedJavaMethod method;
38
39 private boolean isMature;
40 private int position;
41 private int hintPosition;
42 private int hintBCI;
43 private HotSpotMethodDataAccessor dataAccessor;
44
45 private boolean includeNormal;
46 private boolean includeOSR;
47
48 public HotSpotProfilingInfo(HotSpotMethodData methodData, HotSpotResolvedJavaMethod method, boolean includeNormal, boolean includeOSR) {
49 this.methodData = methodData;
50 this.method = method;
51 this.includeNormal = includeNormal;
52 this.includeOSR = includeOSR;
53 this.isMature = methodData.isProfileMature();
54 hintPosition = 0;
55 hintBCI = -1;
56 }
57
58 @Override
59 public int getCodeSize() {
60 return method.getCodeSize();
61 }
62
63 @Override
64 public JavaTypeProfile getTypeProfile(int bci) {
65 if (!isMature) {
66 return null;
67 }
68 findBCI(bci, false);
69 return dataAccessor.getTypeProfile(methodData, position);
70 }
71
72 @Override
73 public JavaMethodProfile getMethodProfile(int bci) {
74 if (!isMature) {
75 return null;
76 }
77 findBCI(bci, false);
78 return dataAccessor.getMethodProfile(methodData, position);
79 }
80
81 @Override
82 public double getBranchTakenProbability(int bci) {
83 if (!isMature) {
84 return -1;
85 }
86 findBCI(bci, false);
87 return dataAccessor.getBranchTakenProbability(methodData, position);
88 }
89
90 @Override
91 public double[] getSwitchProbabilities(int bci) {
92 if (!isMature) {
93 return null;
94 }
95 findBCI(bci, false);
96 return dataAccessor.getSwitchProbabilities(methodData, position);
97 }
98
99 @Override
100 public TriState getExceptionSeen(int bci) {
101 findBCI(bci, true);
102 return dataAccessor.getExceptionSeen(methodData, position);
103 }
104
105 @Override
106 public TriState getNullSeen(int bci) {
107 findBCI(bci, false);
108 return dataAccessor.getNullSeen(methodData, position);
109 }
110
111 @Override
112 public int getExecutionCount(int bci) {
113 if (!isMature) {
114 return -1;
115 }
116 findBCI(bci, false);
117 return dataAccessor.getExecutionCount(methodData, position);
118 }
119
120 @Override
121 public int getDeoptimizationCount(DeoptimizationReason reason) {
122 int count = 0;
123 if (includeNormal) {
124 count += methodData.getDeoptimizationCount(reason);
125 }
126 if (includeOSR) {
127 count += methodData.getOSRDeoptimizationCount(reason);
128 }
129 return count;
130 }
131
132 private void findBCI(int targetBCI, boolean searchExtraData) {
133 assert targetBCI >= 0 : "invalid BCI";
134
135 if (methodData.hasNormalData()) {
136 int currentPosition = targetBCI < hintBCI ? 0 : hintPosition;
137 HotSpotMethodDataAccessor currentAccessor;
138 while ((currentAccessor = methodData.getNormalData(currentPosition)) != null) {
139 int currentBCI = currentAccessor.getBCI(methodData, currentPosition);
140 if (currentBCI == targetBCI) {
141 normalDataFound(currentAccessor, currentPosition, currentBCI);
142 return;
143 } else if (currentBCI > targetBCI) {
144 break;
145 }
146 currentPosition = currentPosition + currentAccessor.getSize(methodData, currentPosition);
147 }
148 }
149
150 boolean exceptionPossiblyNotRecorded = false;
151 if (searchExtraData && methodData.hasExtraData()) {
152 int currentPosition = methodData.getExtraDataBeginOffset();
153 HotSpotMethodDataAccessor currentAccessor;
154 while ((currentAccessor = methodData.getExtraData(currentPosition)) != null) {
155 int currentBCI = currentAccessor.getBCI(methodData, currentPosition);
156 if (currentBCI == targetBCI) {
157 extraDataFound(currentAccessor, currentPosition);
158 return;
159 }
160 currentPosition = currentPosition + currentAccessor.getSize(methodData, currentPosition);
161 }
162
163 if (!methodData.isWithin(currentPosition)) {
164 exceptionPossiblyNotRecorded = true;
165 // metricInsufficentSpace.increment();
166 }
167 }
168
169 noDataFound(exceptionPossiblyNotRecorded);
170 }
171
172 private void normalDataFound(HotSpotMethodDataAccessor data, int pos, int bci) {
173 setCurrentData(data, pos);
174 this.hintPosition = position;
175 this.hintBCI = bci;
176 }
177
178 private void extraDataFound(HotSpotMethodDataAccessor data, int pos) {
179 setCurrentData(data, pos);
180 }
181
182 private void noDataFound(boolean exceptionPossiblyNotRecorded) {
183 HotSpotMethodDataAccessor accessor = HotSpotMethodData.getNoDataAccessor(exceptionPossiblyNotRecorded);
184 setCurrentData(accessor, -1);
185 }
186
187 private void setCurrentData(HotSpotMethodDataAccessor dataAccessor, int position) {
188 this.dataAccessor = dataAccessor;
189 this.position = position;
190 }
191
192 @Override
193 public boolean isMature() {
194 return isMature;
195 }
196
197 public void ignoreMature() {
198 isMature = true;
199 }
200
201 @Override
202 public String toString() {
203 return "HotSpotProfilingInfo<" + this.toString(null, "; ") + ">";
204 }
205
206 @Override
207 public void setMature() {
208 isMature = true;
209 }
210
211 /**
212 * {@code MethodData::_jvmci_ir_size} (currently) supports at most one JVMCI compiler IR type
213 * which will be determined by the first JVMCI compiler that calls
214 * {@link #setCompilerIRSize(Class, int)}.
215 */
216 private static volatile Class<?> supportedCompilerIRType;
217
218 @Override
219 public boolean setCompilerIRSize(Class<?> irType, int size) {
220 if (supportedCompilerIRType == null) {
221 synchronized (HotSpotProfilingInfo.class) {
222 if (supportedCompilerIRType == null) {
223 supportedCompilerIRType = irType;
224 }
225 }
226 }
227 if (supportedCompilerIRType != irType) {
228 return false;
229 }
230 methodData.setCompiledIRSize(size);
231 return true;
232 }
233
234 @Override
235 public int getCompilerIRSize(Class<?> irType) {
236 if (irType == supportedCompilerIRType) {
237 return methodData.getCompiledIRSize();
238 }
239 return -1;
240 }
241 }