1 |
dl |
1.1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* Other contributors include John Vint |
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*/ |
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import java.util.ArrayList; |
9 |
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import java.util.List; |
10 |
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import java.util.concurrent.atomic.AtomicInteger; |
11 |
jsr166 |
1.16 |
import java.util.concurrent.atomic.AtomicBoolean; |
12 |
dl |
1.1 |
import java.util.concurrent.*; |
13 |
jsr166 |
1.16 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
14 |
jsr166 |
1.19 |
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
15 |
dl |
1.1 |
import junit.framework.Test; |
16 |
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import junit.framework.TestSuite; |
17 |
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18 |
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public class PhaserTest extends JSR166TestCase { |
19 |
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20 |
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public static void main(String[] args) { |
21 |
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junit.textui.TestRunner.run(suite()); |
22 |
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} |
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24 |
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public static Test suite() { |
25 |
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return new TestSuite(PhaserTest.class); |
26 |
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} |
27 |
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28 |
jsr166 |
1.21 |
private static final int maxParties = 65535; |
29 |
jsr166 |
1.22 |
|
30 |
jsr166 |
1.19 |
/** Checks state of phaser. */ |
31 |
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protected void assertState(Phaser phaser, |
32 |
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int phase, int parties, int unarrived) { |
33 |
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assertEquals(phase, phaser.getPhase()); |
34 |
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assertEquals(parties, phaser.getRegisteredParties()); |
35 |
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assertEquals(unarrived, phaser.getUnarrivedParties()); |
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assertEquals(parties - unarrived, phaser.getArrivedParties()); |
37 |
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assertTrue((phaser.getPhase() >= 0) ^ phaser.isTerminated()); |
38 |
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} |
39 |
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40 |
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/** Checks state of terminated phaser. */ |
41 |
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protected void assertTerminated(Phaser phaser, int parties, int unarrived) { |
42 |
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assertTrue(phaser.isTerminated()); |
43 |
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assertTrue(phaser.getPhase() < 0); |
44 |
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assertEquals(parties, phaser.getRegisteredParties()); |
45 |
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assertEquals(unarrived, phaser.getUnarrivedParties()); |
46 |
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assertEquals(parties - unarrived, phaser.getArrivedParties()); |
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} |
48 |
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49 |
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protected void assertTerminated(Phaser phaser) { |
50 |
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assertTerminated(phaser, 0, 0); |
51 |
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} |
52 |
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53 |
dl |
1.1 |
/** |
54 |
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* Empty constructor builds a new Phaser with no parent, no registered |
55 |
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* parties and initial phase number of 0 |
56 |
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*/ |
57 |
jsr166 |
1.21 |
public void testConstructorDefaultValues() { |
58 |
dl |
1.1 |
Phaser phaser = new Phaser(); |
59 |
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assertNull(phaser.getParent()); |
60 |
jsr166 |
1.21 |
assertEquals(0, phaser.getRegisteredParties()); |
61 |
dl |
1.1 |
assertEquals(0, phaser.getArrivedParties()); |
62 |
jsr166 |
1.21 |
assertEquals(0, phaser.getUnarrivedParties()); |
63 |
dl |
1.1 |
assertEquals(0, phaser.getPhase()); |
64 |
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} |
65 |
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/** |
67 |
jsr166 |
1.21 |
* Constructing with a negative number of parties throws |
68 |
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* IllegalArgumentException |
69 |
dl |
1.1 |
*/ |
70 |
jsr166 |
1.21 |
public void testConstructorNegativeParties() { |
71 |
dl |
1.1 |
try { |
72 |
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new Phaser(-1); |
73 |
jsr166 |
1.6 |
shouldThrow(); |
74 |
jsr166 |
1.8 |
} catch (IllegalArgumentException success) {} |
75 |
dl |
1.1 |
} |
76 |
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77 |
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/** |
78 |
jsr166 |
1.21 |
* Constructing with a negative number of parties throws |
79 |
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* IllegalArgumentException |
80 |
dl |
1.1 |
*/ |
81 |
jsr166 |
1.21 |
public void testConstructorNegativeParties2() { |
82 |
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try { |
83 |
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new Phaser(new Phaser(), -1); |
84 |
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shouldThrow(); |
85 |
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} catch (IllegalArgumentException success) {} |
86 |
dl |
1.1 |
} |
87 |
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/** |
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jsr166 |
1.21 |
* Constructing with a number of parties > 65535 throws |
90 |
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* IllegalArgumentException |
91 |
dl |
1.1 |
*/ |
92 |
jsr166 |
1.21 |
public void testConstructorPartiesExceedsLimit() { |
93 |
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new Phaser(maxParties); |
94 |
dl |
1.1 |
try { |
95 |
jsr166 |
1.21 |
new Phaser(maxParties + 1); |
96 |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
98 |
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99 |
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new Phaser(new Phaser(), maxParties); |
100 |
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try { |
101 |
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new Phaser(new Phaser(), maxParties + 1); |
102 |
dl |
1.1 |
shouldThrow(); |
103 |
jsr166 |
1.8 |
} catch (IllegalArgumentException success) {} |
104 |
dl |
1.1 |
} |
105 |
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106 |
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/** |
107 |
jsr166 |
1.21 |
* The parent provided to the constructor should be returned from |
108 |
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* a later call to getParent |
109 |
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*/ |
110 |
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public void testConstructor3() { |
111 |
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Phaser parent = new Phaser(); |
112 |
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assertSame(parent, new Phaser(parent).getParent()); |
113 |
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assertNull(new Phaser(null).getParent()); |
114 |
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} |
115 |
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116 |
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/** |
117 |
dl |
1.1 |
* The parent being input into the parameter should equal the original |
118 |
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* parent when being returned |
119 |
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*/ |
120 |
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public void testConstructor5() { |
121 |
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Phaser parent = new Phaser(); |
122 |
jsr166 |
1.21 |
assertSame(parent, new Phaser(parent, 0).getParent()); |
123 |
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assertNull(new Phaser(null, 0).getParent()); |
124 |
dl |
1.1 |
} |
125 |
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126 |
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/** |
127 |
jsr166 |
1.21 |
* register() will increment the number of unarrived parties by |
128 |
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* one and not affect its arrived parties |
129 |
dl |
1.1 |
*/ |
130 |
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public void testRegister1() { |
131 |
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Phaser phaser = new Phaser(); |
132 |
jsr166 |
1.19 |
assertState(phaser, 0, 0, 0); |
133 |
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assertEquals(0, phaser.register()); |
134 |
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assertState(phaser, 0, 1, 1); |
135 |
dl |
1.1 |
} |
136 |
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137 |
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/** |
138 |
jsr166 |
1.4 |
* Registering more than 65536 parties causes IllegalStateException |
139 |
dl |
1.1 |
*/ |
140 |
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public void testRegister2() { |
141 |
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Phaser phaser = new Phaser(0); |
142 |
jsr166 |
1.19 |
assertState(phaser, 0, 0, 0); |
143 |
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assertEquals(0, phaser.bulkRegister(maxParties - 10)); |
144 |
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assertState(phaser, 0, maxParties - 10, maxParties - 10); |
145 |
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for (int i = 0; i < 10; i++) { |
146 |
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assertState(phaser, 0, maxParties - 10 + i, maxParties - 10 + i); |
147 |
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assertEquals(0, phaser.register()); |
148 |
dl |
1.1 |
} |
149 |
jsr166 |
1.19 |
assertState(phaser, 0, maxParties, maxParties); |
150 |
dl |
1.1 |
try { |
151 |
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phaser.register(); |
152 |
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shouldThrow(); |
153 |
jsr166 |
1.8 |
} catch (IllegalStateException success) {} |
154 |
jsr166 |
1.21 |
|
155 |
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try { |
156 |
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phaser.bulkRegister(Integer.MAX_VALUE); |
157 |
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shouldThrow(); |
158 |
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} catch (IllegalStateException success) {} |
159 |
dl |
1.1 |
} |
160 |
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161 |
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/** |
162 |
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* register() correctly returns the current barrier phase number when |
163 |
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* invoked |
164 |
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*/ |
165 |
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public void testRegister3() { |
166 |
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Phaser phaser = new Phaser(); |
167 |
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assertEquals(0, phaser.register()); |
168 |
jsr166 |
1.19 |
assertEquals(0, phaser.arrive()); |
169 |
dl |
1.1 |
assertEquals(1, phaser.register()); |
170 |
jsr166 |
1.19 |
assertState(phaser, 1, 2, 2); |
171 |
dl |
1.1 |
} |
172 |
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173 |
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/** |
174 |
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* register causes the next arrive to not increment the phase rather retain |
175 |
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* the phase number |
176 |
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*/ |
177 |
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public void testRegister4() { |
178 |
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Phaser phaser = new Phaser(1); |
179 |
jsr166 |
1.19 |
assertEquals(0, phaser.arrive()); |
180 |
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assertEquals(1, phaser.register()); |
181 |
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assertEquals(1, phaser.arrive()); |
182 |
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assertState(phaser, 1, 2, 1); |
183 |
dl |
1.1 |
} |
184 |
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185 |
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/** |
186 |
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* Invoking bulkRegister with a negative parameter throws an |
187 |
jsr166 |
1.4 |
* IllegalArgumentException |
188 |
dl |
1.1 |
*/ |
189 |
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public void testBulkRegister1() { |
190 |
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try { |
191 |
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new Phaser().bulkRegister(-1); |
192 |
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shouldThrow(); |
193 |
jsr166 |
1.8 |
} catch (IllegalArgumentException success) {} |
194 |
dl |
1.1 |
} |
195 |
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196 |
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/** |
197 |
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* bulkRegister should correctly record the number of unarrived parties with |
198 |
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* the number of parties being registered |
199 |
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*/ |
200 |
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public void testBulkRegister2() { |
201 |
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Phaser phaser = new Phaser(); |
202 |
jsr166 |
1.19 |
assertEquals(0, phaser.bulkRegister(20)); |
203 |
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assertState(phaser, 0, 20, 20); |
204 |
dl |
1.1 |
} |
205 |
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206 |
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/** |
207 |
jsr166 |
1.4 |
* Registering with a number of parties greater than or equal to 1<<16 |
208 |
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* throws IllegalStateException. |
209 |
dl |
1.1 |
*/ |
210 |
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public void testBulkRegister3() { |
211 |
jsr166 |
1.19 |
assertEquals(0, new Phaser().bulkRegister((1 << 16) - 1)); |
212 |
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213 |
dl |
1.1 |
try { |
214 |
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new Phaser().bulkRegister(1 << 16); |
215 |
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shouldThrow(); |
216 |
jsr166 |
1.8 |
} catch (IllegalStateException success) {} |
217 |
jsr166 |
1.19 |
|
218 |
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try { |
219 |
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new Phaser(2).bulkRegister((1 << 16) - 2); |
220 |
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shouldThrow(); |
221 |
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} catch (IllegalStateException success) {} |
222 |
dl |
1.1 |
} |
223 |
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224 |
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/** |
225 |
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* the phase number increments correctly when tripping the barrier |
226 |
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*/ |
227 |
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public void testPhaseIncrement1() { |
228 |
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for (int size = 1; size < nine; size++) { |
229 |
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final Phaser phaser = new Phaser(size); |
230 |
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for (int index = 0; index <= (1 << size); index++) { |
231 |
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int phase = phaser.arrive(); |
232 |
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assertTrue(index % size == 0 ? (index / size) == phase : index - (phase * size) > 0); |
233 |
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} |
234 |
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} |
235 |
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} |
236 |
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237 |
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/** |
238 |
jsr166 |
1.19 |
* arrive() on a registered phaser increments phase. |
239 |
dl |
1.1 |
*/ |
240 |
|
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public void testArrive1() { |
241 |
|
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Phaser phaser = new Phaser(1); |
242 |
jsr166 |
1.19 |
assertState(phaser, 0, 1, 1); |
243 |
|
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assertEquals(0, phaser.arrive()); |
244 |
|
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assertState(phaser, 1, 1, 1); |
245 |
|
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} |
246 |
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247 |
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/** |
248 |
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* arriveAndDeregister does not wait for others to arrive at barrier |
249 |
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*/ |
250 |
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public void testArriveAndDeregister() throws InterruptedException { |
251 |
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final Phaser phaser = new Phaser(1); |
252 |
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for (int i = 0; i < 10; i++) { |
253 |
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assertState(phaser, 0, 1, 1); |
254 |
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assertEquals(0, phaser.register()); |
255 |
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assertState(phaser, 0, 2, 2); |
256 |
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assertEquals(0, phaser.arriveAndDeregister()); |
257 |
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assertState(phaser, 0, 1, 1); |
258 |
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} |
259 |
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assertEquals(0, phaser.arriveAndDeregister()); |
260 |
|
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assertTerminated(phaser); |
261 |
dl |
1.1 |
} |
262 |
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263 |
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/** |
264 |
jsr166 |
1.7 |
* arriveAndDeregister does not wait for others to arrive at barrier |
265 |
dl |
1.1 |
*/ |
266 |
jsr166 |
1.7 |
public void testArrive2() throws InterruptedException { |
267 |
jsr166 |
1.19 |
final Phaser phaser = new Phaser(); |
268 |
|
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assertEquals(0, phaser.register()); |
269 |
jsr166 |
1.7 |
List<Thread> threads = new ArrayList<Thread>(); |
270 |
jsr166 |
1.19 |
for (int i = 0; i < 10; i++) { |
271 |
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assertEquals(0, phaser.register()); |
272 |
jsr166 |
1.7 |
threads.add(newStartedThread(new CheckedRunnable() { |
273 |
jsr166 |
1.9 |
public void realRun() throws InterruptedException { |
274 |
jsr166 |
1.19 |
assertEquals(0, phaser.arriveAndDeregister()); |
275 |
jsr166 |
1.7 |
}})); |
276 |
jsr166 |
1.19 |
} |
277 |
dl |
1.1 |
|
278 |
jsr166 |
1.7 |
for (Thread thread : threads) |
279 |
jsr166 |
1.19 |
awaitTermination(thread, LONG_DELAY_MS); |
280 |
|
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assertState(phaser, 0, 1, 1); |
281 |
|
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assertEquals(0, phaser.arrive()); |
282 |
|
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assertState(phaser, 1, 1, 1); |
283 |
dl |
1.1 |
} |
284 |
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285 |
|
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/** |
286 |
jsr166 |
1.3 |
* arrive() returns a negative number if the Phaser is terminated |
287 |
dl |
1.1 |
*/ |
288 |
|
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public void testArrive3() { |
289 |
|
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Phaser phaser = new Phaser(1); |
290 |
|
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phaser.forceTermination(); |
291 |
jsr166 |
1.19 |
assertTerminated(phaser, 1, 1); |
292 |
dl |
1.1 |
assertTrue(phaser.arrive() < 0); |
293 |
jsr166 |
1.19 |
assertTrue(phaser.register() < 0); |
294 |
|
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assertTrue(phaser.arriveAndDeregister() < 0); |
295 |
|
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assertTrue(phaser.awaitAdvance(1) < 0); |
296 |
|
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assertTrue(phaser.getPhase() < 0); |
297 |
dl |
1.1 |
} |
298 |
|
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|
299 |
|
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/** |
300 |
|
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* arriveAndDeregister() throws IllegalStateException if number of |
301 |
jsr166 |
1.3 |
* registered or unarrived parties would become negative |
302 |
dl |
1.1 |
*/ |
303 |
|
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public void testArriveAndDeregister1() { |
304 |
|
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try { |
305 |
|
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Phaser phaser = new Phaser(); |
306 |
|
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phaser.arriveAndDeregister(); |
307 |
|
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shouldThrow(); |
308 |
jsr166 |
1.8 |
} catch (IllegalStateException success) {} |
309 |
dl |
1.1 |
} |
310 |
|
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|
311 |
|
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/** |
312 |
jsr166 |
1.19 |
* arriveAndDeregister reduces the number of arrived parties |
313 |
dl |
1.1 |
*/ |
314 |
jsr166 |
1.19 |
public void testArriveAndDeregister2() { |
315 |
dl |
1.1 |
final Phaser phaser = new Phaser(1); |
316 |
jsr166 |
1.19 |
assertEquals(0, phaser.register()); |
317 |
|
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assertEquals(0, phaser.arrive()); |
318 |
|
|
assertState(phaser, 0, 2, 1); |
319 |
|
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assertEquals(0, phaser.arriveAndDeregister()); |
320 |
|
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assertState(phaser, 1, 1, 1); |
321 |
dl |
1.1 |
} |
322 |
|
|
|
323 |
|
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/** |
324 |
jsr166 |
1.19 |
* arriveAndDeregister arrives at the barrier on a phaser with a parent and |
325 |
dl |
1.1 |
* when a deregistration occurs and causes the phaser to have zero parties |
326 |
|
|
* its parent will be deregistered as well |
327 |
|
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*/ |
328 |
jsr166 |
1.19 |
public void testArriveAndDeregister3() { |
329 |
dl |
1.1 |
Phaser parent = new Phaser(); |
330 |
jsr166 |
1.19 |
Phaser child = new Phaser(parent); |
331 |
|
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assertState(child, 0, 0, 0); |
332 |
dl |
1.23 |
assertState(parent, 0, 0, 0); |
333 |
jsr166 |
1.19 |
assertEquals(0, child.register()); |
334 |
|
|
assertState(child, 0, 1, 1); |
335 |
|
|
assertState(parent, 0, 1, 1); |
336 |
|
|
assertEquals(0, child.arriveAndDeregister()); |
337 |
|
|
assertTerminated(child); |
338 |
|
|
assertTerminated(parent); |
339 |
dl |
1.1 |
} |
340 |
|
|
|
341 |
|
|
/** |
342 |
|
|
* arriveAndDeregister deregisters one party from its parent when |
343 |
jsr166 |
1.19 |
* the number of parties of child is zero after deregistration |
344 |
dl |
1.1 |
*/ |
345 |
jsr166 |
1.19 |
public void testArriveAndDeregister4() { |
346 |
dl |
1.1 |
Phaser parent = new Phaser(); |
347 |
jsr166 |
1.19 |
Phaser child = new Phaser(parent); |
348 |
|
|
assertEquals(0, parent.register()); |
349 |
|
|
assertEquals(0, child.register()); |
350 |
|
|
assertState(child, 0, 1, 1); |
351 |
|
|
assertState(parent, 0, 2, 2); |
352 |
|
|
assertEquals(0, child.arriveAndDeregister()); |
353 |
|
|
assertState(child, 0, 0, 0); |
354 |
|
|
assertState(parent, 0, 1, 1); |
355 |
dl |
1.1 |
} |
356 |
|
|
|
357 |
|
|
/** |
358 |
|
|
* arriveAndDeregister deregisters one party from its parent when |
359 |
|
|
* the number of parties of root is nonzero after deregistration. |
360 |
|
|
*/ |
361 |
|
|
public void testArriveAndDeregister5() { |
362 |
jsr166 |
1.19 |
Phaser root = new Phaser(); |
363 |
|
|
Phaser parent = new Phaser(root); |
364 |
dl |
1.1 |
Phaser child = new Phaser(parent); |
365 |
dl |
1.23 |
assertState(root, 0, 0, 0); |
366 |
|
|
assertState(parent, 0, 0, 0); |
367 |
jsr166 |
1.19 |
assertState(child, 0, 0, 0); |
368 |
|
|
assertEquals(0, child.register()); |
369 |
|
|
assertState(root, 0, 1, 1); |
370 |
|
|
assertState(parent, 0, 1, 1); |
371 |
|
|
assertState(child, 0, 1, 1); |
372 |
|
|
assertEquals(0, child.arriveAndDeregister()); |
373 |
|
|
assertTerminated(child); |
374 |
|
|
assertTerminated(parent); |
375 |
|
|
assertTerminated(root); |
376 |
dl |
1.1 |
} |
377 |
|
|
|
378 |
|
|
/** |
379 |
|
|
* arriveAndDeregister returns the phase in which it leaves the |
380 |
|
|
* phaser in after deregistration |
381 |
|
|
*/ |
382 |
jsr166 |
1.7 |
public void testArriveAndDeregister6() throws InterruptedException { |
383 |
dl |
1.1 |
final Phaser phaser = new Phaser(2); |
384 |
jsr166 |
1.7 |
Thread t = newStartedThread(new CheckedRunnable() { |
385 |
jsr166 |
1.9 |
public void realRun() { |
386 |
jsr166 |
1.19 |
assertEquals(0, phaser.arrive()); |
387 |
jsr166 |
1.7 |
}}); |
388 |
jsr166 |
1.19 |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
389 |
|
|
assertState(phaser, 1, 2, 2); |
390 |
|
|
assertEquals(1, phaser.arriveAndDeregister()); |
391 |
|
|
assertState(phaser, 1, 1, 1); |
392 |
|
|
assertEquals(1, phaser.arriveAndDeregister()); |
393 |
|
|
assertTerminated(phaser); |
394 |
|
|
awaitTermination(t, SHORT_DELAY_MS); |
395 |
dl |
1.1 |
} |
396 |
|
|
|
397 |
|
|
/** |
398 |
|
|
* awaitAdvance succeeds upon advance |
399 |
|
|
*/ |
400 |
|
|
public void testAwaitAdvance1() { |
401 |
|
|
final Phaser phaser = new Phaser(1); |
402 |
jsr166 |
1.19 |
assertEquals(0, phaser.arrive()); |
403 |
|
|
assertEquals(1, phaser.awaitAdvance(0)); |
404 |
dl |
1.1 |
} |
405 |
|
|
|
406 |
|
|
/** |
407 |
|
|
* awaitAdvance with a negative parameter will return without affecting the |
408 |
|
|
* phaser |
409 |
|
|
*/ |
410 |
|
|
public void testAwaitAdvance2() { |
411 |
jsr166 |
1.6 |
Phaser phaser = new Phaser(); |
412 |
jsr166 |
1.19 |
assertTrue(phaser.awaitAdvance(-1) < 0); |
413 |
|
|
assertState(phaser, 0, 0, 0); |
414 |
dl |
1.1 |
} |
415 |
|
|
|
416 |
|
|
/** |
417 |
jsr166 |
1.20 |
* awaitAdvance continues waiting if interrupted before waiting |
418 |
dl |
1.1 |
*/ |
419 |
jsr166 |
1.20 |
public void testAwaitAdvanceAfterInterrupt() throws InterruptedException { |
420 |
dl |
1.1 |
final Phaser phaser = new Phaser(); |
421 |
jsr166 |
1.19 |
assertEquals(0, phaser.register()); |
422 |
jsr166 |
1.17 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
423 |
dl |
1.1 |
|
424 |
jsr166 |
1.7 |
Thread t = newStartedThread(new CheckedRunnable() { |
425 |
jsr166 |
1.9 |
public void realRun() throws InterruptedException { |
426 |
jsr166 |
1.20 |
Thread.currentThread().interrupt(); |
427 |
jsr166 |
1.19 |
assertEquals(0, phaser.register()); |
428 |
jsr166 |
1.20 |
assertEquals(0, phaser.arrive()); |
429 |
jsr166 |
1.17 |
threadStarted.countDown(); |
430 |
jsr166 |
1.20 |
assertTrue(Thread.currentThread().isInterrupted()); |
431 |
|
|
assertEquals(1, phaser.awaitAdvance(0)); |
432 |
jsr166 |
1.17 |
assertTrue(Thread.currentThread().isInterrupted()); |
433 |
jsr166 |
1.5 |
}}); |
434 |
jsr166 |
1.20 |
|
435 |
jsr166 |
1.17 |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
436 |
jsr166 |
1.20 |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
437 |
|
|
assertEquals(0, phaser.arrive()); |
438 |
|
|
awaitTermination(t, SMALL_DELAY_MS); |
439 |
|
|
|
440 |
|
|
Thread.currentThread().interrupt(); |
441 |
|
|
assertEquals(1, phaser.awaitAdvance(0)); |
442 |
|
|
assertTrue(Thread.interrupted()); |
443 |
|
|
} |
444 |
|
|
|
445 |
|
|
/** |
446 |
|
|
* awaitAdvance continues waiting if interrupted while waiting |
447 |
|
|
*/ |
448 |
|
|
public void testAwaitAdvanceBeforeInterrupt() throws InterruptedException { |
449 |
|
|
final Phaser phaser = new Phaser(); |
450 |
|
|
assertEquals(0, phaser.register()); |
451 |
|
|
final CountDownLatch threadStarted = new CountDownLatch(1); |
452 |
|
|
|
453 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
454 |
|
|
public void realRun() throws InterruptedException { |
455 |
|
|
assertEquals(0, phaser.register()); |
456 |
|
|
assertEquals(0, phaser.arrive()); |
457 |
|
|
threadStarted.countDown(); |
458 |
|
|
assertFalse(Thread.currentThread().isInterrupted()); |
459 |
|
|
assertEquals(1, phaser.awaitAdvance(0)); |
460 |
|
|
assertTrue(Thread.currentThread().isInterrupted()); |
461 |
|
|
}}); |
462 |
|
|
|
463 |
|
|
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
464 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
465 |
jsr166 |
1.7 |
t.interrupt(); |
466 |
jsr166 |
1.19 |
assertEquals(0, phaser.arrive()); |
467 |
jsr166 |
1.17 |
awaitTermination(t, SMALL_DELAY_MS); |
468 |
jsr166 |
1.20 |
|
469 |
|
|
Thread.currentThread().interrupt(); |
470 |
|
|
assertEquals(1, phaser.awaitAdvance(0)); |
471 |
|
|
assertTrue(Thread.interrupted()); |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
/** |
475 |
|
|
* arriveAndAwaitAdvance continues waiting if interrupted before waiting |
476 |
|
|
*/ |
477 |
|
|
public void testArriveAndAwaitAdvanceAfterInterrupt() |
478 |
|
|
throws InterruptedException { |
479 |
|
|
final Phaser phaser = new Phaser(); |
480 |
|
|
assertEquals(0, phaser.register()); |
481 |
|
|
final CountDownLatch threadStarted = new CountDownLatch(1); |
482 |
|
|
|
483 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
484 |
|
|
public void realRun() throws InterruptedException { |
485 |
|
|
Thread.currentThread().interrupt(); |
486 |
|
|
assertEquals(0, phaser.register()); |
487 |
|
|
threadStarted.countDown(); |
488 |
|
|
assertTrue(Thread.currentThread().isInterrupted()); |
489 |
|
|
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
490 |
|
|
assertTrue(Thread.currentThread().isInterrupted()); |
491 |
|
|
}}); |
492 |
|
|
|
493 |
|
|
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
494 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
495 |
|
|
Thread.currentThread().interrupt(); |
496 |
|
|
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
497 |
|
|
assertTrue(Thread.interrupted()); |
498 |
|
|
awaitTermination(t, SMALL_DELAY_MS); |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
/** |
502 |
|
|
* arriveAndAwaitAdvance continues waiting if interrupted while waiting |
503 |
|
|
*/ |
504 |
|
|
public void testArriveAndAwaitAdvanceBeforeInterrupt() |
505 |
|
|
throws InterruptedException { |
506 |
|
|
final Phaser phaser = new Phaser(); |
507 |
|
|
assertEquals(0, phaser.register()); |
508 |
|
|
final CountDownLatch threadStarted = new CountDownLatch(1); |
509 |
|
|
|
510 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
511 |
|
|
public void realRun() throws InterruptedException { |
512 |
|
|
assertEquals(0, phaser.register()); |
513 |
|
|
threadStarted.countDown(); |
514 |
|
|
assertFalse(Thread.currentThread().isInterrupted()); |
515 |
|
|
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
516 |
|
|
assertTrue(Thread.currentThread().isInterrupted()); |
517 |
|
|
}}); |
518 |
|
|
|
519 |
|
|
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
520 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
521 |
|
|
t.interrupt(); |
522 |
|
|
Thread.currentThread().interrupt(); |
523 |
|
|
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
524 |
|
|
assertTrue(Thread.interrupted()); |
525 |
|
|
awaitTermination(t, SMALL_DELAY_MS); |
526 |
dl |
1.1 |
} |
527 |
|
|
|
528 |
|
|
/** |
529 |
|
|
* awaitAdvance atomically waits for all parties within the same phase to |
530 |
|
|
* complete before continuing |
531 |
|
|
*/ |
532 |
jsr166 |
1.5 |
public void testAwaitAdvance4() throws InterruptedException { |
533 |
|
|
final Phaser phaser = new Phaser(4); |
534 |
jsr166 |
1.19 |
final AtomicInteger count = new AtomicInteger(0); |
535 |
jsr166 |
1.5 |
List<Thread> threads = new ArrayList<Thread>(); |
536 |
jsr166 |
1.19 |
for (int i = 0; i < 4; i++) |
537 |
jsr166 |
1.7 |
threads.add(newStartedThread(new CheckedRunnable() { |
538 |
jsr166 |
1.9 |
public void realRun() { |
539 |
jsr166 |
1.19 |
for (int k = 0; k < 3; k++) { |
540 |
|
|
assertEquals(2*k+1, phaser.arriveAndAwaitAdvance()); |
541 |
|
|
count.incrementAndGet(); |
542 |
|
|
assertEquals(2*k+1, phaser.arrive()); |
543 |
|
|
assertEquals(2*k+2, phaser.awaitAdvance(2*k+1)); |
544 |
|
|
assertEquals(count.get(), 4*(k+1)); |
545 |
|
|
}}})); |
546 |
|
|
|
547 |
jsr166 |
1.5 |
for (Thread thread : threads) |
548 |
jsr166 |
1.19 |
awaitTermination(thread, MEDIUM_DELAY_MS); |
549 |
dl |
1.1 |
} |
550 |
|
|
|
551 |
|
|
/** |
552 |
|
|
* awaitAdvance returns the current phase |
553 |
|
|
*/ |
554 |
jsr166 |
1.7 |
public void testAwaitAdvance5() throws InterruptedException { |
555 |
dl |
1.1 |
final Phaser phaser = new Phaser(1); |
556 |
jsr166 |
1.19 |
assertEquals(1, phaser.awaitAdvance(phaser.arrive())); |
557 |
|
|
assertEquals(1, phaser.getPhase()); |
558 |
|
|
assertEquals(1, phaser.register()); |
559 |
jsr166 |
1.7 |
List<Thread> threads = new ArrayList<Thread>(); |
560 |
|
|
for (int i = 0; i < 8; i++) { |
561 |
jsr166 |
1.18 |
final CountDownLatch latch = new CountDownLatch(1); |
562 |
|
|
final boolean goesFirst = ((i & 1) == 0); |
563 |
jsr166 |
1.7 |
threads.add(newStartedThread(new CheckedRunnable() { |
564 |
jsr166 |
1.18 |
public void realRun() throws InterruptedException { |
565 |
|
|
if (goesFirst) |
566 |
|
|
latch.countDown(); |
567 |
|
|
else |
568 |
|
|
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
569 |
dl |
1.1 |
phaser.arrive(); |
570 |
jsr166 |
1.7 |
}})); |
571 |
jsr166 |
1.18 |
if (goesFirst) |
572 |
|
|
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
573 |
|
|
else |
574 |
|
|
latch.countDown(); |
575 |
jsr166 |
1.19 |
assertEquals(i + 2, phaser.awaitAdvance(phaser.arrive())); |
576 |
|
|
assertEquals(i + 2, phaser.getPhase()); |
577 |
dl |
1.1 |
} |
578 |
jsr166 |
1.7 |
for (Thread thread : threads) |
579 |
jsr166 |
1.18 |
awaitTermination(thread, SMALL_DELAY_MS); |
580 |
dl |
1.1 |
} |
581 |
|
|
|
582 |
|
|
/** |
583 |
|
|
* awaitAdvance returns when the phaser is externally terminated |
584 |
|
|
*/ |
585 |
jsr166 |
1.7 |
public void testAwaitAdvance6() throws InterruptedException { |
586 |
dl |
1.1 |
final Phaser phaser = new Phaser(3); |
587 |
jsr166 |
1.18 |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
588 |
|
|
final List<Thread> threads = new ArrayList<Thread>(); |
589 |
|
|
for (int i = 0; i < 2; i++) { |
590 |
|
|
Runnable r = new CheckedRunnable() { |
591 |
|
|
public void realRun() { |
592 |
jsr166 |
1.19 |
assertEquals(0, phaser.arrive()); |
593 |
jsr166 |
1.18 |
threadsStarted.countDown(); |
594 |
jsr166 |
1.19 |
assertTrue(phaser.awaitAdvance(0) < 0); |
595 |
jsr166 |
1.18 |
assertTrue(phaser.isTerminated()); |
596 |
jsr166 |
1.19 |
assertTrue(phaser.getPhase() < 0); |
597 |
|
|
assertEquals(3, phaser.getRegisteredParties()); |
598 |
jsr166 |
1.18 |
}}; |
599 |
|
|
threads.add(newStartedThread(r)); |
600 |
|
|
} |
601 |
|
|
threadsStarted.await(); |
602 |
dl |
1.1 |
phaser.forceTermination(); |
603 |
jsr166 |
1.18 |
for (Thread thread : threads) |
604 |
|
|
awaitTermination(thread, SMALL_DELAY_MS); |
605 |
jsr166 |
1.19 |
assertTrue(phaser.isTerminated()); |
606 |
|
|
assertTrue(phaser.getPhase() < 0); |
607 |
|
|
assertEquals(3, phaser.getRegisteredParties()); |
608 |
dl |
1.1 |
} |
609 |
|
|
|
610 |
|
|
/** |
611 |
|
|
* arriveAndAwaitAdvance throws IllegalStateException with no |
612 |
|
|
* unarrived parties |
613 |
|
|
*/ |
614 |
|
|
public void testArriveAndAwaitAdvance1() { |
615 |
|
|
try { |
616 |
|
|
Phaser phaser = new Phaser(); |
617 |
|
|
phaser.arriveAndAwaitAdvance(); |
618 |
|
|
shouldThrow(); |
619 |
jsr166 |
1.8 |
} catch (IllegalStateException success) {} |
620 |
dl |
1.1 |
} |
621 |
|
|
|
622 |
|
|
/** |
623 |
|
|
* arriveAndAwaitAdvance waits for all threads to arrive, the |
624 |
|
|
* number of arrived parties is the same number that is accounted |
625 |
|
|
* for when the main thread awaitsAdvance |
626 |
|
|
*/ |
627 |
jsr166 |
1.7 |
public void testArriveAndAwaitAdvance3() throws InterruptedException { |
628 |
dl |
1.1 |
final Phaser phaser = new Phaser(1); |
629 |
jsr166 |
1.19 |
final int THREADS = 3; |
630 |
|
|
final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
631 |
jsr166 |
1.7 |
final List<Thread> threads = new ArrayList<Thread>(); |
632 |
jsr166 |
1.19 |
for (int i = 0; i < THREADS; i++) |
633 |
jsr166 |
1.7 |
threads.add(newStartedThread(new CheckedRunnable() { |
634 |
jsr166 |
1.19 |
public void realRun() throws InterruptedException { |
635 |
|
|
assertEquals(0, phaser.register()); |
636 |
|
|
threadsStarted.countDown(); |
637 |
|
|
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
638 |
|
|
}})); |
639 |
|
|
|
640 |
|
|
assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
641 |
|
|
long t0 = System.nanoTime(); |
642 |
|
|
while (phaser.getArrivedParties() < THREADS) |
643 |
|
|
Thread.yield(); |
644 |
|
|
assertEquals(THREADS, phaser.getArrivedParties()); |
645 |
|
|
assertTrue(NANOSECONDS.toMillis(System.nanoTime() - t0) < SMALL_DELAY_MS); |
646 |
|
|
for (Thread thread : threads) |
647 |
|
|
assertTrue(thread.isAlive()); |
648 |
|
|
assertState(phaser, 0, THREADS + 1, 1); |
649 |
dl |
1.12 |
phaser.arriveAndAwaitAdvance(); |
650 |
jsr166 |
1.7 |
for (Thread thread : threads) |
651 |
jsr166 |
1.19 |
awaitTermination(thread, SMALL_DELAY_MS); |
652 |
|
|
assertState(phaser, 1, THREADS + 1, THREADS + 1); |
653 |
dl |
1.1 |
} |
654 |
|
|
|
655 |
|
|
} |