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comparison truffle/com.oracle.truffle.api.profiles/src/com/oracle/truffle/api/profiles/Profile.java @ 22504:d80a5ff56f51

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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
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 17 Dec 2015 13:45:37 +0100
parents 828c67903db2
children 1133c68332ef
comparison
equal deleted inserted replaced
22503:828c67903db2 22504:d80a5ff56f51
25 package com.oracle.truffle.api.profiles; 25 package com.oracle.truffle.api.profiles;
26 26
27 import com.oracle.truffle.api.Assumption; 27 import com.oracle.truffle.api.Assumption;
28 import com.oracle.truffle.api.CompilerDirectives; 28 import com.oracle.truffle.api.CompilerDirectives;
29 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal; 29 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
30 import com.oracle.truffle.api.Truffle;
30 import com.oracle.truffle.api.TruffleRuntime; 31 import com.oracle.truffle.api.TruffleRuntime;
31 import com.oracle.truffle.api.nodes.Node; 32 import com.oracle.truffle.api.nodes.Node;
32 import com.oracle.truffle.api.nodes.NodeCloneable; 33 import com.oracle.truffle.api.nodes.NodeCloneable;
33 import com.oracle.truffle.api.nodes.RootNode; 34 import com.oracle.truffle.api.nodes.RootNode;
34 35
88 * </p> 89 * </p>
89 * 90 *
90 * @see Assumption 91 * @see Assumption
91 */ 92 */
92 public abstract class Profile extends NodeCloneable { 93 public abstract class Profile extends NodeCloneable {
94 private static final boolean ENABLED;
95 static {
96 boolean enabled;
97 try {
98 enabled = Truffle.getRuntime().isProfilingEnabled();
99 } catch (NoSuchMethodError ex) {
100 // running on old version of Graal
101 enabled = true;
102 }
103 ENABLED = enabled;
104 }
105
106 static boolean isProfilingEnabled() {
107 return ENABLED;
108 }
93 109
94 Profile() { 110 Profile() {
95 /* We don't to allow custom profiles. We want to evolve this API further first. Sorry. */ 111 /* We don't to allow custom profiles. We want to evolve this API further first. Sorry. */
96 } 112 }
97 113