| 1 |
|
/* |
| 2 |
|
* Written by Doug Lea with assistance from members of JCP JSR-166 |
| 3 |
|
* Expert Group and released to the public domain, as explained at |
| 4 |
< |
* http://creativecommons.org/licenses/publicdomain |
| 4 |
> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
| 5 |
|
* Other contributors include Andrew Wright, Jeffrey Hayes, |
| 6 |
|
* Pat Fisher, Mike Judd. |
| 7 |
|
*/ |
| 8 |
|
|
| 9 |
– |
|
| 9 |
|
import junit.framework.*; |
| 10 |
|
import java.util.*; |
| 11 |
|
import java.util.concurrent.*; |
| 12 |
|
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| 13 |
|
import java.util.concurrent.atomic.*; |
| 15 |
– |
import java.math.BigInteger; |
| 14 |
|
import java.security.*; |
| 15 |
|
|
| 16 |
|
public class ExecutorCompletionServiceTest extends JSR166TestCase { |
| 17 |
|
public static void main(String[] args) { |
| 18 |
< |
junit.textui.TestRunner.run (suite()); |
| 18 |
> |
junit.textui.TestRunner.run(suite()); |
| 19 |
|
} |
| 20 |
|
public static Test suite() { |
| 21 |
|
return new TestSuite(ExecutorCompletionServiceTest.class); |
| 22 |
|
} |
| 23 |
|
|
| 26 |
– |
|
| 24 |
|
/** |
| 25 |
|
* Creating a new ECS with null Executor throw NPE |
| 26 |
|
*/ |
| 109 |
|
/** |
| 110 |
|
* If poll returns non-null, the returned task is completed |
| 111 |
|
*/ |
| 112 |
< |
public void testPoll1() throws InterruptedException { |
| 112 |
> |
public void testPoll1() throws Exception { |
| 113 |
|
ExecutorService e = Executors.newCachedThreadPool(); |
| 114 |
|
ExecutorCompletionService ecs = new ExecutorCompletionService(e); |
| 115 |
|
try { |
| 116 |
|
assertNull(ecs.poll()); |
| 117 |
|
Callable c = new StringTask(); |
| 118 |
|
ecs.submit(c); |
| 119 |
< |
Thread.sleep(SHORT_DELAY_MS); |
| 120 |
< |
for (;;) { |
| 121 |
< |
Future f = ecs.poll(); |
| 122 |
< |
if (f != null) { |
| 123 |
< |
assertTrue(f.isDone()); |
| 124 |
< |
break; |
| 125 |
< |
} |
| 119 |
> |
|
| 120 |
> |
long startTime = System.nanoTime(); |
| 121 |
> |
Future f; |
| 122 |
> |
while ((f = ecs.poll()) == null) { |
| 123 |
> |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
| 124 |
> |
fail("timed out"); |
| 125 |
> |
Thread.yield(); |
| 126 |
|
} |
| 127 |
+ |
assertTrue(f.isDone()); |
| 128 |
+ |
assertSame(TEST_STRING, f.get()); |
| 129 |
|
} finally { |
| 130 |
|
joinPool(e); |
| 131 |
|
} |
| 148 |
|
joinPool(e); |
| 149 |
|
} |
| 150 |
|
} |
| 151 |
< |
/** |
| 152 |
< |
* Submitting to underlying AES that overrides newTaskFor(Callable) |
| 153 |
< |
* returns and eventually runs Future returned by newTaskFor. |
| 154 |
< |
*/ |
| 155 |
< |
public void testNewTaskForCallable() throws InterruptedException { |
| 156 |
< |
final AtomicBoolean done = new AtomicBoolean(false); |
| 157 |
< |
class MyCallableFuture<V> extends FutureTask<V> { |
| 158 |
< |
MyCallableFuture(Callable<V> c) { super(c); } |
| 159 |
< |
protected void done() { done.set(true); } |
| 160 |
< |
} |
| 161 |
< |
ExecutorService e = new ThreadPoolExecutor( |
| 151 |
> |
|
| 152 |
> |
/** |
| 153 |
> |
* Submitting to underlying AES that overrides newTaskFor(Callable) |
| 154 |
> |
* returns and eventually runs Future returned by newTaskFor. |
| 155 |
> |
*/ |
| 156 |
> |
public void testNewTaskForCallable() throws InterruptedException { |
| 157 |
> |
final AtomicBoolean done = new AtomicBoolean(false); |
| 158 |
> |
class MyCallableFuture<V> extends FutureTask<V> { |
| 159 |
> |
MyCallableFuture(Callable<V> c) { super(c); } |
| 160 |
> |
protected void done() { done.set(true); } |
| 161 |
> |
} |
| 162 |
> |
ExecutorService e = new ThreadPoolExecutor( |
| 163 |
|
1, 1, 30L, TimeUnit.SECONDS, |
| 164 |
|
new ArrayBlockingQueue<Runnable>(1)) { |
| 165 |
< |
protected <T> RunnableFuture<T> newTaskFor(Callable<T> c) { |
| 166 |
< |
return new MyCallableFuture<T>(c); |
| 167 |
< |
} |
| 168 |
< |
}; |
| 169 |
< |
ExecutorCompletionService<String> ecs = |
| 170 |
< |
new ExecutorCompletionService<String>(e); |
| 171 |
< |
try { |
| 172 |
< |
assertNull(ecs.poll()); |
| 173 |
< |
Callable<String> c = new StringTask(); |
| 174 |
< |
Future f1 = ecs.submit(c); |
| 175 |
< |
assertTrue("submit must return MyCallableFuture", |
| 176 |
< |
f1 instanceof MyCallableFuture); |
| 177 |
< |
Future f2 = ecs.take(); |
| 178 |
< |
assertSame("submit and take must return same objects", f1, f2); |
| 179 |
< |
assertTrue("completed task must have set done", done.get()); |
| 180 |
< |
} finally { |
| 181 |
< |
joinPool(e); |
| 182 |
< |
} |
| 183 |
< |
} |
| 184 |
< |
|
| 185 |
< |
/** |
| 186 |
< |
* Submitting to underlying AES that overrides newTaskFor(Runnable,T) |
| 187 |
< |
* returns and eventually runs Future returned by newTaskFor. |
| 188 |
< |
*/ |
| 189 |
< |
public void testNewTaskForRunnable() throws InterruptedException { |
| 190 |
< |
final AtomicBoolean done = new AtomicBoolean(false); |
| 191 |
< |
class MyRunnableFuture<V> extends FutureTask<V> { |
| 192 |
< |
MyRunnableFuture(Runnable t, V r) { super(t, r); } |
| 193 |
< |
protected void done() { done.set(true); } |
| 194 |
< |
} |
| 195 |
< |
ExecutorService e = new ThreadPoolExecutor( |
| 165 |
> |
protected <T> RunnableFuture<T> newTaskFor(Callable<T> c) { |
| 166 |
> |
return new MyCallableFuture<T>(c); |
| 167 |
> |
}}; |
| 168 |
> |
ExecutorCompletionService<String> ecs = |
| 169 |
> |
new ExecutorCompletionService<String>(e); |
| 170 |
> |
try { |
| 171 |
> |
assertNull(ecs.poll()); |
| 172 |
> |
Callable<String> c = new StringTask(); |
| 173 |
> |
Future f1 = ecs.submit(c); |
| 174 |
> |
assertTrue("submit must return MyCallableFuture", |
| 175 |
> |
f1 instanceof MyCallableFuture); |
| 176 |
> |
Future f2 = ecs.take(); |
| 177 |
> |
assertSame("submit and take must return same objects", f1, f2); |
| 178 |
> |
assertTrue("completed task must have set done", done.get()); |
| 179 |
> |
} finally { |
| 180 |
> |
joinPool(e); |
| 181 |
> |
} |
| 182 |
> |
} |
| 183 |
> |
|
| 184 |
> |
/** |
| 185 |
> |
* Submitting to underlying AES that overrides newTaskFor(Runnable,T) |
| 186 |
> |
* returns and eventually runs Future returned by newTaskFor. |
| 187 |
> |
*/ |
| 188 |
> |
public void testNewTaskForRunnable() throws InterruptedException { |
| 189 |
> |
final AtomicBoolean done = new AtomicBoolean(false); |
| 190 |
> |
class MyRunnableFuture<V> extends FutureTask<V> { |
| 191 |
> |
MyRunnableFuture(Runnable t, V r) { super(t, r); } |
| 192 |
> |
protected void done() { done.set(true); } |
| 193 |
> |
} |
| 194 |
> |
ExecutorService e = new ThreadPoolExecutor( |
| 195 |
|
1, 1, 30L, TimeUnit.SECONDS, |
| 196 |
|
new ArrayBlockingQueue<Runnable>(1)) { |
| 197 |
< |
protected <T> RunnableFuture<T> newTaskFor(Runnable t, T r) { |
| 198 |
< |
return new MyRunnableFuture<T>(t, r); |
| 199 |
< |
} |
| 200 |
< |
}; |
| 201 |
< |
ExecutorCompletionService<String> ecs = |
| 202 |
< |
new ExecutorCompletionService<String>(e); |
| 203 |
< |
try { |
| 204 |
< |
assertNull(ecs.poll()); |
| 205 |
< |
Runnable r = new NoOpRunnable(); |
| 206 |
< |
Future f1 = ecs.submit(r, null); |
| 207 |
< |
assertTrue("submit must return MyRunnableFuture", |
| 208 |
< |
f1 instanceof MyRunnableFuture); |
| 209 |
< |
Future f2 = ecs.take(); |
| 210 |
< |
assertSame("submit and take must return same objects", f1, f2); |
| 211 |
< |
assertTrue("completed task must have set done", done.get()); |
| 212 |
< |
} finally { |
| 213 |
< |
joinPool(e); |
| 214 |
< |
} |
| 216 |
< |
} |
| 197 |
> |
protected <T> RunnableFuture<T> newTaskFor(Runnable t, T r) { |
| 198 |
> |
return new MyRunnableFuture<T>(t, r); |
| 199 |
> |
}}; |
| 200 |
> |
ExecutorCompletionService<String> ecs = |
| 201 |
> |
new ExecutorCompletionService<String>(e); |
| 202 |
> |
try { |
| 203 |
> |
assertNull(ecs.poll()); |
| 204 |
> |
Runnable r = new NoOpRunnable(); |
| 205 |
> |
Future f1 = ecs.submit(r, null); |
| 206 |
> |
assertTrue("submit must return MyRunnableFuture", |
| 207 |
> |
f1 instanceof MyRunnableFuture); |
| 208 |
> |
Future f2 = ecs.take(); |
| 209 |
> |
assertSame("submit and take must return same objects", f1, f2); |
| 210 |
> |
assertTrue("completed task must have set done", done.get()); |
| 211 |
> |
} finally { |
| 212 |
> |
joinPool(e); |
| 213 |
> |
} |
| 214 |
> |
} |
| 215 |
|
|
| 216 |
|
} |
