1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @summary unit tests for java.lang.invoke.MethodHandles
* @library /lib/testlibrary /java/lang/invoke/common
* @compile MethodHandlesTest.java MethodHandlesSpreadArgumentsTest.java remote/RemoteExample.java
* @run junit/othervm/timeout=2500 -XX:+IgnoreUnrecognizedVMOptions
* -XX:-VerifyDependencies
* -esa
* test.java.lang.invoke.MethodHandlesSpreadArgumentsTest
*/
package test.java.lang.invoke;
import org.junit.*;
import test.java.lang.invoke.lib.CodeCacheOverflowProcessor;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodType;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import static org.junit.Assert.*;
public class MethodHandlesSpreadArgumentsTest extends MethodHandlesTest {
@Test // SLOW
public void testSpreadArguments() throws Throwable {
CodeCacheOverflowProcessor.runMHTest(this::testSpreadArguments0);
CodeCacheOverflowProcessor.runMHTest(this::testSpreadArguments1);
}
public void testSpreadArguments0() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("spreadArguments");
for (Class<?> argType : new Class<?>[]{Object.class, Integer.class, int.class}) {
if (verbosity >= 3)
System.out.println("spreadArguments "+argType);
Class<?> arrayType = java.lang.reflect.Array.newInstance(argType, 0).getClass();
for (int nargs = 0; nargs < 50; nargs++) {
if (CAN_TEST_LIGHTLY && nargs > 11) break;
for (int pos = 0; pos <= nargs; pos++) {
if (CAN_TEST_LIGHTLY && pos > 2 && pos < nargs-2) continue;
if (nargs > 10 && pos > 4 && pos < nargs-4 && pos % 10 != 3)
continue;
testSpreadArguments(argType, arrayType, pos, nargs);
}
}
}
}
public void testSpreadArguments(Class<?> argType, Class<?> arrayType, int pos, int nargs) throws Throwable {
countTest();
MethodHandle target2 = varargsArray(arrayType, nargs);
MethodHandle target = target2.asType(target2.type().generic());
if (verbosity >= 3)
System.out.println("spread into "+target2+" ["+pos+".."+nargs+"]");
Object[] args = randomArgs(target2.type().parameterArray());
// make sure the target does what we think it does:
checkTarget(argType, pos, nargs, target, args);
List<Class<?>> newParams = new ArrayList<>(target2.type().parameterList());
{ // modify newParams in place
List<Class<?>> spreadParams = newParams.subList(pos, nargs);
spreadParams.clear(); spreadParams.add(arrayType);
}
MethodType newType = MethodType.methodType(arrayType, newParams);
MethodHandle result = target2.asSpreader(arrayType, nargs-pos);
assert(result.type() == newType) : Arrays.asList(result, newType);
result = result.asType(newType.generic());
Object returnValue;
if (pos == 0) {
Object args2 = ValueConversions.changeArrayType(arrayType, Arrays.copyOfRange(args, pos, args.length));
returnValue = result.invokeExact(args2);
} else {
Object[] args1 = Arrays.copyOfRange(args, 0, pos+1);
args1[pos] = ValueConversions.changeArrayType(arrayType, Arrays.copyOfRange(args, pos, args.length));
returnValue = result.invokeWithArguments(args1);
}
checkReturnValue(argType, args, result, returnValue);
}
public void testSpreadArguments1() throws Throwable {
if (CAN_SKIP_WORKING) return;
startTest("spreadArguments/pos");
for (Class<?> argType : new Class<?>[]{Object.class, Integer.class, int.class}) {
if (verbosity >= 3)
System.out.println("spreadArguments "+argType);
Class<?> arrayType = java.lang.reflect.Array.newInstance(argType, 0).getClass();
for (int nargs = 0; nargs < 50; nargs++) {
if (CAN_TEST_LIGHTLY && nargs > 11) break;
for (int pos = 0; pos <= nargs; pos++) {
if (CAN_TEST_LIGHTLY && pos > 2 && pos < nargs-2) continue;
if (nargs > 10 && pos > 4 && pos < nargs-4 && pos % 10 != 3)
continue;
for (int spr = 1; spr < nargs - pos; ++spr) {
if (spr > 4 && spr != 7 && spr != 11 && spr != 20 && spr < nargs - pos - 4) continue;
testSpreadArguments(argType, arrayType, pos, spr, nargs);
}
}
}
}
}
public void testSpreadArguments(Class<?> argType, Class<?> arrayType,
int pos, int spread, int nargs) throws Throwable {
countTest();
MethodHandle target2 = varargsArray(arrayType, nargs);
MethodHandle target = target2.asType(target2.type().generic());
if (verbosity >= 3)
System.out.println("spread into " + target2 + " [" + pos + ".." + (pos + spread) + "[");
Object[] args = randomArgs(target2.type().parameterArray());
// make sure the target does what we think it does:
checkTarget(argType, pos, nargs, target, args);
List<Class<?>> newParams = new ArrayList<>(target2.type().parameterList());
{ // modify newParams in place
List<Class<?>> spreadParams = newParams.subList(pos, pos + spread);
spreadParams.clear();
spreadParams.add(arrayType);
}
MethodType newType = MethodType.methodType(arrayType, newParams);
MethodHandle result = target2.asSpreader(pos, arrayType, spread);
assert (result.type() == newType) : Arrays.asList(result, newType);
result = result.asType(newType.generic());
// args1 has nargs-spread entries, plus one for the to-be-spread array
int args1Length = nargs - (spread - 1);
Object[] args1 = new Object[args1Length];
System.arraycopy(args, 0, args1, 0, pos);
args1[pos] = ValueConversions.changeArrayType(arrayType, Arrays.copyOfRange(args, pos, pos + spread));
System.arraycopy(args, pos + spread, args1, pos + 1, nargs - spread - pos);
Object returnValue = result.invokeWithArguments(args1);
checkReturnValue(argType, args, result, returnValue);
}
private static void checkTarget(Class<?> argType, int pos, int nargs,
MethodHandle target, Object[] args) throws Throwable {
if (pos == 0 && nargs < 5 && !argType.isPrimitive()) {
Object[] check = (Object[]) target.invokeWithArguments(args);
assertArrayEquals(args, check);
switch (nargs) {
case 0:
check = (Object[]) (Object) target.invokeExact();
assertArrayEquals(args, check);
break;
case 1:
check = (Object[]) (Object) target.invokeExact(args[0]);
assertArrayEquals(args, check);
break;
case 2:
check = (Object[]) (Object) target.invokeExact(args[0], args[1]);
assertArrayEquals(args, check);
break;
}
}
}
private static void checkReturnValue(Class<?> argType, Object[] args, MethodHandle result, Object returnValue) {
String argstr = Arrays.toString(args);
if (!argType.isPrimitive()) {
Object[] rv = (Object[]) returnValue;
String rvs = Arrays.toString(rv);
if (!Arrays.equals(args, rv)) {
System.out.println("method: "+result);
System.out.println("expected: "+argstr);
System.out.println("returned: "+rvs);
assertArrayEquals(args, rv);
}
} else if (argType == int.class) {
String rvs = Arrays.toString((int[]) returnValue);
if (!argstr.equals(rvs)) {
System.out.println("method: "+result);
System.out.println("expected: "+argstr);
System.out.println("returned: "+rvs);
assertEquals(argstr, rvs);
}
} else if (argType == long.class) {
String rvs = Arrays.toString((long[]) returnValue);
if (!argstr.equals(rvs)) {
System.out.println("method: "+result);
System.out.println("expected: "+argstr);
System.out.println("returned: "+rvs);
assertEquals(argstr, rvs);
}
} else {
// cannot test...
}
}
}
|
