32 /**
33 * This class consists exclusively of static names internal to the
34 * method handle implementation.
35 * Usage: {@code import static java.lang.invoke.MethodHandleStatics.*}
36 * @author John Rose, JSR 292 EG
37 */
38 /*non-public*/ class MethodHandleStatics {
39
40 private MethodHandleStatics() { } // do not instantiate
41
42 static final Unsafe UNSAFE = Unsafe.getUnsafe();
43
44 static final boolean DEBUG_METHOD_HANDLE_NAMES;
45 static final boolean DUMP_CLASS_FILES;
46 static final boolean TRACE_INTERPRETER;
47 static final boolean TRACE_METHOD_LINKAGE;
48 static final int COMPILE_THRESHOLD;
49 static final int DONT_INLINE_THRESHOLD;
50 static final int PROFILE_LEVEL;
51 static final boolean PROFILE_GWT;
52
53 static {
54 final Object[] values = new Object[8];
55 AccessController.doPrivileged(new PrivilegedAction<Void>() {
56 public Void run() {
57 values[0] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DEBUG_NAMES");
58 values[1] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DUMP_CLASS_FILES");
59 values[2] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_INTERPRETER");
60 values[3] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_METHOD_LINKAGE");
61 values[4] = Integer.getInteger("java.lang.invoke.MethodHandle.COMPILE_THRESHOLD", 0);
62 values[5] = Integer.getInteger("java.lang.invoke.MethodHandle.DONT_INLINE_THRESHOLD", 30);
63 values[6] = Integer.getInteger("java.lang.invoke.MethodHandle.PROFILE_LEVEL", 0);
64 values[7] = Boolean.parseBoolean(System.getProperty("java.lang.invoke.MethodHandle.PROFILE_GWT", "true"));
65 return null;
66 }
67 });
68 DEBUG_METHOD_HANDLE_NAMES = (Boolean) values[0];
69 DUMP_CLASS_FILES = (Boolean) values[1];
70 TRACE_INTERPRETER = (Boolean) values[2];
71 TRACE_METHOD_LINKAGE = (Boolean) values[3];
72 COMPILE_THRESHOLD = (Integer) values[4];
73 DONT_INLINE_THRESHOLD = (Integer) values[5];
74 PROFILE_LEVEL = (Integer) values[6];
75 PROFILE_GWT = (Boolean) values[7];
76 }
77
78 /** Tell if any of the debugging switches are turned on.
79 * If this is the case, it is reasonable to perform extra checks or save extra information.
80 */
81 /*non-public*/ static boolean debugEnabled() {
82 return (DEBUG_METHOD_HANDLE_NAMES |
83 DUMP_CLASS_FILES |
84 TRACE_INTERPRETER |
85 TRACE_METHOD_LINKAGE);
86 }
87
88 /*non-public*/ static String getNameString(MethodHandle target, MethodType type) {
89 if (type == null)
90 type = target.type();
91 MemberName name = null;
92 if (target != null)
93 name = target.internalMemberName();
94 if (name == null)
95 return "invoke" + type;
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32 /**
33 * This class consists exclusively of static names internal to the
34 * method handle implementation.
35 * Usage: {@code import static java.lang.invoke.MethodHandleStatics.*}
36 * @author John Rose, JSR 292 EG
37 */
38 /*non-public*/ class MethodHandleStatics {
39
40 private MethodHandleStatics() { } // do not instantiate
41
42 static final Unsafe UNSAFE = Unsafe.getUnsafe();
43
44 static final boolean DEBUG_METHOD_HANDLE_NAMES;
45 static final boolean DUMP_CLASS_FILES;
46 static final boolean TRACE_INTERPRETER;
47 static final boolean TRACE_METHOD_LINKAGE;
48 static final int COMPILE_THRESHOLD;
49 static final int DONT_INLINE_THRESHOLD;
50 static final int PROFILE_LEVEL;
51 static final boolean PROFILE_GWT;
52 static final int CUSTOMIZE_THRESHOLD;
53
54 static {
55 final Object[] values = new Object[9];
56 AccessController.doPrivileged(new PrivilegedAction<Void>() {
57 public Void run() {
58 values[0] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DEBUG_NAMES");
59 values[1] = Boolean.getBoolean("java.lang.invoke.MethodHandle.DUMP_CLASS_FILES");
60 values[2] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_INTERPRETER");
61 values[3] = Boolean.getBoolean("java.lang.invoke.MethodHandle.TRACE_METHOD_LINKAGE");
62 values[4] = Integer.getInteger("java.lang.invoke.MethodHandle.COMPILE_THRESHOLD", 0);
63 values[5] = Integer.getInteger("java.lang.invoke.MethodHandle.DONT_INLINE_THRESHOLD", 30);
64 values[6] = Integer.getInteger("java.lang.invoke.MethodHandle.PROFILE_LEVEL", 0);
65 values[7] = Boolean.parseBoolean(System.getProperty("java.lang.invoke.MethodHandle.PROFILE_GWT", "true"));
66 values[8] = Integer.getInteger("java.lang.invoke.MethodHandle.CUSTOMIZE_THRESHOLD", 127);
67 return null;
68 }
69 });
70 DEBUG_METHOD_HANDLE_NAMES = (Boolean) values[0];
71 DUMP_CLASS_FILES = (Boolean) values[1];
72 TRACE_INTERPRETER = (Boolean) values[2];
73 TRACE_METHOD_LINKAGE = (Boolean) values[3];
74 COMPILE_THRESHOLD = (Integer) values[4];
75 DONT_INLINE_THRESHOLD = (Integer) values[5];
76 PROFILE_LEVEL = (Integer) values[6];
77 PROFILE_GWT = (Boolean) values[7];
78 CUSTOMIZE_THRESHOLD = (Integer) values[8];
79 }
80
81 /** Tell if any of the debugging switches are turned on.
82 * If this is the case, it is reasonable to perform extra checks or save extra information.
83 */
84 /*non-public*/ static boolean debugEnabled() {
85 return (DEBUG_METHOD_HANDLE_NAMES |
86 DUMP_CLASS_FILES |
87 TRACE_INTERPRETER |
88 TRACE_METHOD_LINKAGE);
89 }
90
91 /*non-public*/ static String getNameString(MethodHandle target, MethodType type) {
92 if (type == null)
93 type = target.type();
94 MemberName name = null;
95 if (target != null)
96 name = target.internalMemberName();
97 if (name == null)
98 return "invoke" + type;
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