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
|
/*
* Copyright (c) 2023, 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.
*/
package compiler.c2;
import java.io.PrintStream;
import java.util.List;
import java.util.ArrayList;
/*
* @test id=default_config
* @bug 8267532
* @summary Test whether trap in place of pruned exception handler block works
*
* @run main/othervm
* -Xbatch
* -Xlog:deoptimization=trace
* -XX:CompileCommand=PrintCompilation,compiler.c2.TestExHandlerTrap::payload
* -XX:CompileCommand=dontinline,compiler.c2.TestExHandlerTrap::payload
* -XX:CompileCommand=dontinline,compiler.c2.TestExHandlerTrap::maybeThrow
* compiler.c2.TestExHandlerTrap
*/
/*
* @test id=no_profiling
* @bug 8267532
* @summary basic smoke test for disabled ex. handler profiling
*
* @run main/othervm
* -Xbatch
* -Xlog:deoptimization=trace
* -XX:CompileCommand=PrintCompilation,compiler.c2.TestExHandlerTrap::payload
* -XX:CompileCommand=dontinline,compiler.c2.TestExHandlerTrap::payload
* -XX:CompileCommand=dontinline,compiler.c2.TestExHandlerTrap::maybeThrow
* -XX:-ProfileExceptionHandlers
* compiler.c2.TestExHandlerTrap
*/
/*
* @test id=stress
* @bug 8267532
* @summary basic smoke test for stressing ex. handler pruning
* @requires vm.debug
*
* @run main/othervm
* -Xbatch
* -Xlog:deoptimization=trace
* -XX:CompileCommand=PrintCompilation,compiler.c2.TestExHandlerTrap::payload
* -XX:CompileCommand=dontinline,compiler.c2.TestExHandlerTrap::payload
* -XX:CompileCommand=dontinline,compiler.c2.TestExHandlerTrap::maybeThrow
* -XX:+StressPrunedExceptionHandlers
* compiler.c2.TestExHandlerTrap
*/
public class TestExHandlerTrap {
private static final String EX_MESSAGE = "Testing trap";
public static void main(String[] args) throws Throwable {
// warmup, compile payload
for (int i = 0; i < 20_000; i++) {
payload(false);
}
try {
// trigger uncommon trap in pruned catch block
payload(true);
} catch (IllegalStateException e) {
if (!e.getMessage().equals(EX_MESSAGE)) {
throw e;
}
}
// continue for a bit, to see if anything breaks
for (int i = 0; i < 1_000; i++) {
payload(false);
}
}
public static void payload(boolean shouldThrow) {
doIt(shouldThrow); // mix in some inlining
}
public static void doIt(boolean shouldThrow) {
PrintStream err = System.err;
try (ConfinedScope r = new ConfinedScope()) {
r.addCloseAction(dummy);
maybeThrow(shouldThrow); // out of line to prevent 'payload' from being deoptimized by unstable if
} catch (IllegalArgumentException e) {
// some side effects to see whether deopt is successful
err.println("Exception message: " + e.getMessage());
err.println("shouldThrow: " + shouldThrow);
}
}
private static void maybeThrow(boolean shouldThrow) {
if (shouldThrow) {
throw new IllegalStateException(EX_MESSAGE);
}
}
static final Runnable dummy = () -> {};
static class ConfinedScope implements AutoCloseable {
final Thread owner;
boolean closed;
final List<Runnable> resources = new ArrayList<>();
private void checkState() {
if (closed) {
throw new AssertionError("Closed");
} else if (owner != Thread.currentThread()) {
throw new AssertionError("Wrong thread");
}
}
ConfinedScope() {
this.owner = Thread.currentThread();
}
void addCloseAction(Runnable runnable) {
checkState();
resources.add(runnable);
}
public void close() {
checkState();
closed = true;
for (Runnable r : resources) {
r.run();
}
}
}
}
|
