1 /*
2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @summary test lowering of synchronized blocks
27 * @build TestSynchronized
28 * @build CodeReflectionTester
29 * @run main CodeReflectionTester TestSynchronized
30 */
31
32 import java.lang.runtime.CodeReflection;
33
34 public class TestSynchronized {
35
36 @CodeReflection
37 @LoweredModel(value = """
38 func @"test1" (%0 : java.lang.Object, %1 : int)int -> {
39 %2 : Var<java.lang.Object> = var %0 @"m";
40 %3 : Var<int> = var %1 @"i";
41 %4 : java.lang.Object = var.load %2;
42 branch ^block_1(%4);
43
44 ^block_1(%5 : java.lang.Object):
45 monitor.enter %5;
46 %6 : java.lang.reflect.code.op.CoreOp$ExceptionRegion = exception.region.enter ^block_2 ^block_4;
47
48 ^block_2:
49 %7 : int = var.load %3;
50 %8 : int = constant @"1";
51 %9 : int = add %7 %8;
52 var.store %3 %9;
53 monitor.exit %5;
54 exception.region.exit %6 ^block_3;
55
56 ^block_3:
57 %10 : int = var.load %3;
58 return %10;
59
60 ^block_4(%11 : java.lang.Throwable):
61 %12 : java.lang.reflect.code.op.CoreOp$ExceptionRegion = exception.region.enter ^block_5 ^block_4;
62
63 ^block_5:
64 monitor.exit %5;
65 exception.region.exit %12 ^block_6;
66
67 ^block_6:
68 throw %11;
69 };
70 """, ssa = false)
71 static int test1(Object m, int i) {
72 synchronized (m) {
73 i++;
74 }
75 return i;
76 }
77
78
79 @CodeReflection
80 @LoweredModel(value = """
81 func @"test2" (%0 : java.lang.Object, %1 : int)int -> {
82 %2 : Var<java.lang.Object> = var %0 @"m";
83 %3 : Var<int> = var %1 @"i";
84 %4 : java.lang.Object = var.load %2;
85 branch ^block_1(%4);
86
87 ^block_1(%5 : java.lang.Object):
88 monitor.enter %5;
89 %6 : java.lang.reflect.code.op.CoreOp$ExceptionRegion = exception.region.enter ^block_2 ^block_8;
90
91 ^block_2:
92 %7 : int = var.load %3;
93 %8 : int = constant @"0";
94 %9 : boolean = gt %7 %8;
95 cbranch %9 ^block_3 ^block_5;
96
97 ^block_3:
98 %10 : int = constant @"-1";
99 monitor.exit %5;
100 exception.region.exit %6 ^block_4;
101
102 ^block_4:
103 return %10;
104
105 ^block_5:
106 branch ^block_6;
107
108 ^block_6:
109 %11 : int = var.load %3;
110 %12 : int = constant @"1";
111 %13 : int = add %11 %12;
112 var.store %3 %13;
113 monitor.exit %5;
114 exception.region.exit %6 ^block_7;
115
116 ^block_7:
117 %14 : int = var.load %3;
118 return %14;
119
120 ^block_8(%15 : java.lang.Throwable):
121 %16 : java.lang.reflect.code.op.CoreOp$ExceptionRegion = exception.region.enter ^block_9 ^block_8;
122
123 ^block_9:
124 monitor.exit %5;
125 exception.region.exit %16 ^block_10;
126
127 ^block_10:
128 throw %15;
129 };
130 """, ssa = false)
131 static int test2(Object m, int i) {
132 synchronized (m) {
133 if (i > 0) {
134 return -1;
135 }
136 i++;
137 }
138 return i;
139 }
140
141 }