Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.api.profiles/src/com/oracle/truffle/api/profiles/Profile.java @ 22504:d80a5ff56f51
Storing the profiling enabled information in a static field; checking it only once; shielding against missing method in the TruffleRuntime interface
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Thu, 17 Dec 2015 13:45:37 +0100 |
parents | 828c67903db2 |
children | 1133c68332ef |
rev | line source |
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22501
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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1 /* |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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4 * |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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5 * This code is free software; you can redistribute it and/or modify it |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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6 * under the terms of the GNU General Public License version 2 only, as |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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7 * published by the Free Software Foundation. Oracle designates this |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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8 * particular file as subject to the "Classpath" exception as provided |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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9 * by Oracle in the LICENSE file that accompanied this code. |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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10 * |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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14 * version 2 for more details (a copy is included in the LICENSE file that |
a63bda98cfdb
Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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15 * accompanied this code). |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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16 * |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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17 * You should have received a copy of the GNU General Public License version |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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20 * |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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22 * or visit www.oracle.com if you need additional information or have any |
a63bda98cfdb
Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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23 * questions. |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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24 */ |
a63bda98cfdb
Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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25 package com.oracle.truffle.api.profiles; |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
Christian Humer <christian.humer@oracle.com>
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26 |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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27 import com.oracle.truffle.api.Assumption; |
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28 import com.oracle.truffle.api.CompilerDirectives; |
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29 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal; |
22504
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Storing the profiling enabled information in a static field; checking it only once; shielding against missing method in the TruffleRuntime interface
Jaroslav Tulach <jaroslav.tulach@oracle.com>
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30 import com.oracle.truffle.api.Truffle; |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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31 import com.oracle.truffle.api.TruffleRuntime; |
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32 import com.oracle.truffle.api.nodes.Node; |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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33 import com.oracle.truffle.api.nodes.NodeCloneable; |
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34 import com.oracle.truffle.api.nodes.RootNode; |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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35 |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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36 /** |
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37 * <p> |
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38 * A profile is a Truffle utility class that uses the {@link CompilerDirectives Truffle compiler |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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39 * directives} to guard for and/or forward runtime information to the compiler. |
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40 * </p> |
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41 * |
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42 * <p> |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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43 * <b>Usage:</b> Profiles should be stored in <code>final</code> or {@link CompilationFinal |
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44 * compilation final} fields of node classes to ensure that they can get optimized properly. |
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45 * Profiles must not be shared between ASTs. Using the same profile multiple times in a single |
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46 * {@link Node node} or in multiple {@link Node nodes} which {@link Node#getRootNode() link} to the |
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47 * same {@link RootNode root} is allowed. <b>Never</b> store profiles inside runtime values that |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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48 * leave the scope of the originating AST. This limitation exists because the used mechanism to |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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49 * invalidate compiled code performs local invalidations only. For global speculations use |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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50 * {@link Assumption assumptions} instead. |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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51 * </p> |
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52 * |
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53 * <p> |
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54 * <b>Compilation:</b> Some profiles like {@link BranchProfile branch} profiles do not induce |
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55 * additional overhead in compiled code. Others like {@link ValueProfile value} profiles might |
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56 * require a runtime check to verify their assumptions which are forwarded to the compiler. Even if |
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57 * profiles do not induce direct overhead in compiled code it still might get invalidated as a |
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58 * result of using profiles. Invalidating profiles will result in the invalidation of compiled code. |
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59 * It is therefore essential to place these profiles in way that is neither too aggressive nor too |
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60 * conservative. |
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61 * </p> |
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62 * |
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63 * <p> |
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64 * <b>Footprint:</b> Whether profiling information can be forwarded to the compiler depends on the |
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Extract profiles into separate package. Add isProfilingEnabled in TruffleRuntime to disable profiling in the default runtime; Add low overhead profiles for primitives; Add LoopConditionProfile; Profile footprint/threadsafety improvements; Make toString implementations more consistent; Greatly enhanced javadoc documentation for profiles; Deprecate old profiles
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65 * capabilities of the {@link TruffleRuntime runtime system}. If the runtime returns |
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66 * <code>true</code> in {@link TruffleRuntime#isProfilingEnabled()} then runtime information will |
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67 * get collected. This comes at at the cost of additional overhead and footprint in interpreted |
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68 * mode. Thats why the factory methods of profiles can return implementations where profiling is |
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69 * disabled. Using disabled profiles makes sense for runtimes that are unable to use the collected |
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70 * profiling information. Even runtime implementations that are able to use this information might |
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71 * decide to turn off profiling for benchmarking purposes. |
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72 * </p> |
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73 * |
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74 * <p> |
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75 * Profile subclasses: |
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76 * <ul> |
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77 * <li> {@link BranchProfile} to profile on unlikely branches like errors.</li> |
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78 * <li> {@link ConditionProfile} to profile on conditionals or boolean values.</li> |
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79 * <li> {@link LoopConditionProfile} to profile on conditionals of loops with special support for |
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80 * counted loops.</li> |
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81 * <li> {@link ValueProfile} to profile on properties like type and identity of values.</li> |
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82 * <li> {@link ByteValueProfile} to profile on <code>byte</code> values.</li> |
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83 * <li> {@link IntValueProfile} to profile on <code>int</code> values.</li> |
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84 * <li> {@link LongValueProfile} to profile on <code>long</code> values.</li> |
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85 * <li> {@link FloatValueProfile} to profile on <code>float</code> values.</li> |
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86 * <li> {@link DoubleValueProfile} to profile on <code>double</code> values.</li> |
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87 * <li> {@link PrimitiveValueProfile} to profile on objects by identity and on primitives by value.</li> |
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88 * </ul> |
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89 * </p> |
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90 * |
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91 * @see Assumption |
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92 */ |
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93 public abstract class Profile extends NodeCloneable { |
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94 private static final boolean ENABLED; |
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95 static { |
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96 boolean enabled; |
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97 try { |
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98 enabled = Truffle.getRuntime().isProfilingEnabled(); |
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99 } catch (NoSuchMethodError ex) { |
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100 // running on old version of Graal |
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101 enabled = true; |
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102 } |
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103 ENABLED = enabled; |
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104 } |
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105 |
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106 static boolean isProfilingEnabled() { |
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107 return ENABLED; |
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108 } |
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109 |
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110 Profile() { |
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111 /* We don't to allow custom profiles. We want to evolve this API further first. Sorry. */ |
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112 } |
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113 |
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114 String toStringDisabled(Class<?> profileClass) { |
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115 return String.format("%s(DISABLED)", profileClass.getSimpleName()); |
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116 } |
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117 |
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118 String toString(Class<?> profileClass, boolean uninitialized, boolean generic, String specialization) { |
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119 String s; |
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120 if (uninitialized) { |
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121 s = "UNINITIALIZED"; |
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122 } else if (generic) { |
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123 s = "GENERIC"; |
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124 } else { |
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125 s = specialization == null ? "" : specialization; |
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126 } |
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127 return String.format("%s(%s)@%s", profileClass.getSimpleName(), s, Integer.toHexString(this.hashCode())); |
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128 } |
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129 |
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130 } |