9 |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.math.BigInteger; |
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import java.security.*; |
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|
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public class ExecutorsTest extends TestCase{ |
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|
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> |
public class ExecutorsTest extends JSR166TestCase{ |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run (suite()); |
18 |
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} |
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|
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|
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public static Test suite() { |
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return new TestSuite(ExecutorsTest.class); |
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return new TestSuite(ExecutorsTest.class); |
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} |
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|
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private static long SHORT_DELAY_MS = 100; |
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private static long MEDIUM_DELAY_MS = 1000; |
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private static long LONG_DELAY_MS = 10000; |
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|
27 |
< |
class SleepRun implements Runnable { |
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public void run() { |
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< |
try{ |
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Thread.sleep(MEDIUM_DELAY_MS); |
31 |
< |
} catch(InterruptedException e){ |
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fail("unexpected exception"); |
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> |
static class TimedCallable<T> implements Callable<T> { |
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private final ExecutorService exec; |
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private final Callable<T> func; |
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private final long msecs; |
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|
28 |
> |
TimedCallable(ExecutorService exec, Callable<T> func, long msecs) { |
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this.exec = exec; |
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this.func = func; |
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this.msecs = msecs; |
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} |
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|
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public T call() throws Exception { |
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Future<T> ftask = exec.submit(func); |
36 |
> |
try { |
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return ftask.get(msecs, TimeUnit.MILLISECONDS); |
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} finally { |
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ftask.cancel(true); |
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} |
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} |
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} |
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|
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|
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< |
class SleepCall implements Callable { |
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public Object call(){ |
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< |
try{ |
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Thread.sleep(MEDIUM_DELAY_MS); |
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}catch(InterruptedException e){ |
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fail("unexpected exception"); |
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> |
|
45 |
> |
private static class Fib implements Callable<BigInteger> { |
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private final BigInteger n; |
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Fib(long n) { |
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if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n); |
49 |
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this.n = BigInteger.valueOf(n); |
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} |
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public BigInteger call() { |
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BigInteger f1 = BigInteger.ONE; |
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BigInteger f2 = f1; |
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for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) { |
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BigInteger t = f1.add(f2); |
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f1 = f2; |
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f2 = t; |
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} |
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return Boolean.TRUE; |
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return f1; |
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} |
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} |
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|
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}; |
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|
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/** |
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* A newCachedThreadPool can execute runnables |
65 |
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*/ |
66 |
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public void testNewCachedThreadPool1() { |
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ExecutorService e = Executors.newCachedThreadPool(); |
68 |
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e.execute(new NoOpRunnable()); |
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e.execute(new NoOpRunnable()); |
70 |
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e.execute(new NoOpRunnable()); |
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e.shutdown(); |
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} |
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|
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/** |
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* Test to verify execute(Executor, Runnable) will throw |
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* RejectedExecutionException Attempting to execute a runnable on |
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< |
* a full ThreadPool will cause such an exception here, up to 5 |
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* runnables are attempted on a pool capable on handling one |
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* until it throws an exception |
75 |
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* A newCachedThreadPool with given ThreadFactory can execute runnables |
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*/ |
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public void testExecute1(){ |
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ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1)); |
79 |
< |
try{ |
80 |
< |
|
81 |
< |
for(int i = 0; i < 5; ++i){ |
82 |
< |
Executors.execute(p, new SleepRun(), Boolean.TRUE); |
65 |
< |
} |
66 |
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fail("should throw"); |
67 |
< |
} catch(RejectedExecutionException success){} |
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p.shutdownNow(); |
77 |
> |
public void testNewCachedThreadPool2() { |
78 |
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ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory()); |
79 |
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e.execute(new NoOpRunnable()); |
80 |
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e.execute(new NoOpRunnable()); |
81 |
> |
e.execute(new NoOpRunnable()); |
82 |
> |
e.shutdown(); |
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} |
84 |
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|
85 |
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/** |
86 |
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* Test to verify execute(Executor, Callable) will throw |
87 |
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* RejectedExecutionException Attempting to execute a callable on |
88 |
< |
* a full ThreadPool will cause such an exception here, up to 5 |
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< |
* runnables are attempted on a pool capable on handling one |
90 |
< |
* until it throws an exception |
91 |
< |
*/ |
92 |
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public void testExecute2(){ |
93 |
< |
ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1)); |
94 |
< |
try{ |
81 |
< |
for(int i = 0; i < 5; ++i) { |
82 |
< |
Executors.execute(p, new SleepCall()); |
83 |
< |
} |
84 |
< |
fail("should throw"); |
85 |
< |
}catch(RejectedExecutionException e){} |
86 |
< |
p.shutdownNow(); |
86 |
> |
* A newCachedThreadPool with null ThreadFactory throws NPE |
87 |
> |
*/ |
88 |
> |
public void testNewCachedThreadPool3() { |
89 |
> |
try { |
90 |
> |
ExecutorService e = Executors.newCachedThreadPool(null); |
91 |
> |
shouldThrow(); |
92 |
> |
} |
93 |
> |
catch(NullPointerException success) { |
94 |
> |
} |
95 |
|
} |
96 |
|
|
97 |
|
|
98 |
|
/** |
99 |
< |
* Test to verify invoke(Executor, Runnable) throws InterruptedException |
100 |
< |
* A single use of invoke starts that will wait long enough |
101 |
< |
* for the invoking thread to be interrupted |
102 |
< |
*/ |
103 |
< |
public void testInvoke2(){ |
104 |
< |
final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
105 |
< |
Thread t = new Thread(new Runnable() { |
106 |
< |
public void run(){ |
99 |
< |
try{ |
100 |
< |
Executors.invoke(p,new Runnable(){ |
101 |
< |
public void run(){ |
102 |
< |
try{ |
103 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
104 |
< |
fail("should throw"); |
105 |
< |
}catch(InterruptedException e){ |
106 |
< |
} |
107 |
< |
} |
108 |
< |
}); |
109 |
< |
} catch(InterruptedException success){ |
110 |
< |
} catch(Exception e) { |
111 |
< |
fail("unexpected exception"); |
112 |
< |
} |
113 |
< |
|
114 |
< |
} |
115 |
< |
}); |
116 |
< |
try{ |
117 |
< |
t.start(); |
118 |
< |
Thread.sleep(SHORT_DELAY_MS); |
119 |
< |
t.interrupt(); |
120 |
< |
}catch(Exception e){ |
121 |
< |
fail("unexpected exception"); |
122 |
< |
} |
123 |
< |
p.shutdownNow(); |
99 |
> |
* A new SingleThreadExecutor can execute runnables |
100 |
> |
*/ |
101 |
> |
public void testNewSingleThreadExecutor1() { |
102 |
> |
ExecutorService e = Executors.newSingleThreadExecutor(); |
103 |
> |
e.execute(new NoOpRunnable()); |
104 |
> |
e.execute(new NoOpRunnable()); |
105 |
> |
e.execute(new NoOpRunnable()); |
106 |
> |
e.shutdown(); |
107 |
|
} |
108 |
|
|
109 |
|
/** |
110 |
< |
* Test to verify invoke(Executor, Runnable) will throw |
111 |
< |
* ExecutionException An ExecutionException occurs when the |
112 |
< |
* underlying Runnable throws an exception, here the |
113 |
< |
* DivideByZeroException will cause an ExecutionException |
114 |
< |
*/ |
115 |
< |
public void testInvoke3(){ |
116 |
< |
ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
117 |
< |
try{ |
135 |
< |
Runnable r = new Runnable(){ |
136 |
< |
public void run(){ |
137 |
< |
int i = 5/0; |
138 |
< |
} |
139 |
< |
}; |
140 |
< |
|
141 |
< |
for(int i =0; i < 5; i++){ |
142 |
< |
Executors.invoke(p,r); |
143 |
< |
} |
144 |
< |
|
145 |
< |
fail("should throw"); |
146 |
< |
} catch(ExecutionException success){ |
147 |
< |
} catch(Exception e){ |
148 |
< |
fail("should throw EE"); |
149 |
< |
} |
150 |
< |
p.shutdownNow(); |
110 |
> |
* A new SingleThreadExecutor with given ThreadFactory can execute runnables |
111 |
> |
*/ |
112 |
> |
public void testNewSingleThreadExecutor2() { |
113 |
> |
ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory()); |
114 |
> |
e.execute(new NoOpRunnable()); |
115 |
> |
e.execute(new NoOpRunnable()); |
116 |
> |
e.execute(new NoOpRunnable()); |
117 |
> |
e.shutdown(); |
118 |
|
} |
119 |
|
|
153 |
– |
|
154 |
– |
|
120 |
|
/** |
121 |
< |
* Test to verify invoke(Executor, Callable) throws |
157 |
< |
* InterruptedException A single use of invoke starts that will |
158 |
< |
* wait long enough for the invoking thread to be interrupted |
121 |
> |
* A new SingleThreadExecutor with null ThreadFactory throws NPE |
122 |
|
*/ |
123 |
< |
public void testInvoke5(){ |
124 |
< |
final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
125 |
< |
|
126 |
< |
final Callable c = new Callable(){ |
127 |
< |
public Object call(){ |
128 |
< |
try{ |
166 |
< |
Executors.invoke(p, new SleepCall()); |
167 |
< |
fail("should throw"); |
168 |
< |
}catch(InterruptedException e){} |
169 |
< |
catch(RejectedExecutionException e2){} |
170 |
< |
catch(ExecutionException e3){} |
171 |
< |
return Boolean.TRUE; |
172 |
< |
} |
173 |
< |
}; |
174 |
< |
|
175 |
< |
|
176 |
< |
|
177 |
< |
Thread t = new Thread(new Runnable(){ |
178 |
< |
public void run(){ |
179 |
< |
try{ |
180 |
< |
c.call(); |
181 |
< |
}catch(Exception e){} |
182 |
< |
} |
183 |
< |
}); |
184 |
< |
try{ |
185 |
< |
t.start(); |
186 |
< |
Thread.sleep(SHORT_DELAY_MS); |
187 |
< |
t.interrupt(); |
188 |
< |
t.join(); |
189 |
< |
}catch(InterruptedException e){ |
190 |
< |
fail("unexpected exception"); |
123 |
> |
public void testNewSingleThreadExecutor3() { |
124 |
> |
try { |
125 |
> |
ExecutorService e = Executors.newSingleThreadExecutor(null); |
126 |
> |
shouldThrow(); |
127 |
> |
} |
128 |
> |
catch(NullPointerException success) { |
129 |
|
} |
192 |
– |
|
193 |
– |
p.shutdownNow(); |
130 |
|
} |
131 |
|
|
132 |
|
/** |
133 |
< |
* Test to verify invoke(Executor, Callable) will throw ExecutionException |
198 |
< |
* An ExecutionException occurs when the underlying Runnable throws |
199 |
< |
* an exception, here the DivideByZeroException will cause an ExecutionException |
133 |
> |
* A new newFixedThreadPool can execute runnables |
134 |
|
*/ |
135 |
< |
public void testInvoke6(){ |
136 |
< |
ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10)); |
135 |
> |
public void testNewFixedThreadPool1() { |
136 |
> |
ExecutorService e = Executors.newFixedThreadPool(2); |
137 |
> |
e.execute(new NoOpRunnable()); |
138 |
> |
e.execute(new NoOpRunnable()); |
139 |
> |
e.execute(new NoOpRunnable()); |
140 |
> |
e.shutdown(); |
141 |
> |
} |
142 |
|
|
143 |
< |
try{ |
144 |
< |
Callable c = new Callable(){ |
145 |
< |
public Object call(){ |
146 |
< |
int i = 5/0; |
147 |
< |
return Boolean.TRUE; |
148 |
< |
} |
149 |
< |
}; |
150 |
< |
|
151 |
< |
for(int i =0; i < 5; i++){ |
213 |
< |
Executors.invoke(p,c); |
214 |
< |
} |
215 |
< |
|
216 |
< |
fail("should throw"); |
217 |
< |
}catch(RejectedExecutionException e){} |
218 |
< |
catch(InterruptedException e2){} |
219 |
< |
catch(ExecutionException e3){} |
220 |
< |
p.shutdownNow(); |
143 |
> |
/** |
144 |
> |
* A new newFixedThreadPool with given ThreadFactory can execute runnables |
145 |
> |
*/ |
146 |
> |
public void testNewFixedThreadPool2() { |
147 |
> |
ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory()); |
148 |
> |
e.execute(new NoOpRunnable()); |
149 |
> |
e.execute(new NoOpRunnable()); |
150 |
> |
e.execute(new NoOpRunnable()); |
151 |
> |
e.shutdown(); |
152 |
|
} |
153 |
|
|
154 |
< |
public void testExecuteRunnable () { |
154 |
> |
/** |
155 |
> |
* A new newFixedThreadPool with null ThreadFactory throws NPE |
156 |
> |
*/ |
157 |
> |
public void testNewFixedThreadPool3() { |
158 |
|
try { |
159 |
< |
Executor e = new DirectExecutor(); |
160 |
< |
Task task = new Task(); |
227 |
< |
|
228 |
< |
assertFalse("task should not be complete", task.isCompleted()); |
229 |
< |
|
230 |
< |
Future<String> future = Executors.execute(e, task, TEST_STRING); |
231 |
< |
String result = future.get(); |
232 |
< |
|
233 |
< |
assertTrue("task should be complete", task.isCompleted()); |
234 |
< |
assertSame("should return test string", TEST_STRING, result); |
235 |
< |
} |
236 |
< |
catch (ExecutionException ex) { |
237 |
< |
fail("Unexpected exception"); |
159 |
> |
ExecutorService e = Executors.newFixedThreadPool(2, null); |
160 |
> |
shouldThrow(); |
161 |
|
} |
162 |
< |
catch (InterruptedException ex) { |
240 |
< |
fail("Unexpected exception"); |
162 |
> |
catch(NullPointerException success) { |
163 |
|
} |
164 |
|
} |
165 |
|
|
166 |
< |
public void testInvokeRunnable () { |
166 |
> |
/** |
167 |
> |
* A new newFixedThreadPool with 0 threads throws IAE |
168 |
> |
*/ |
169 |
> |
public void testNewFixedThreadPool4() { |
170 |
|
try { |
171 |
< |
Executor e = new DirectExecutor(); |
172 |
< |
Task task = new Task(); |
248 |
< |
|
249 |
< |
assertFalse("task should not be complete", task.isCompleted()); |
250 |
< |
|
251 |
< |
Executors.invoke(e, task); |
252 |
< |
|
253 |
< |
assertTrue("task should be complete", task.isCompleted()); |
254 |
< |
} |
255 |
< |
catch (ExecutionException ex) { |
256 |
< |
fail("Unexpected exception"); |
171 |
> |
ExecutorService e = Executors.newFixedThreadPool(0); |
172 |
> |
shouldThrow(); |
173 |
|
} |
174 |
< |
catch (InterruptedException ex) { |
259 |
< |
fail("Unexpected exception"); |
174 |
> |
catch(IllegalArgumentException success) { |
175 |
|
} |
176 |
|
} |
177 |
|
|
263 |
– |
public void testExecuteCallable () { |
264 |
– |
try { |
265 |
– |
Executor e = new DirectExecutor(); |
266 |
– |
Future<String> future = Executors.execute(e, new StringTask()); |
267 |
– |
String result = future.get(); |
178 |
|
|
179 |
< |
assertSame("should return test string", TEST_STRING, result); |
180 |
< |
} |
181 |
< |
catch (ExecutionException ex) { |
182 |
< |
fail("Unexpected exception"); |
179 |
> |
/** |
180 |
> |
* timeouts from execute will time out if they compute too long. |
181 |
> |
*/ |
182 |
> |
public void testTimedCallable() { |
183 |
> |
int N = 10000; |
184 |
> |
ExecutorService executor = Executors.newSingleThreadExecutor(); |
185 |
> |
List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N); |
186 |
> |
try { |
187 |
> |
long startTime = System.currentTimeMillis(); |
188 |
> |
|
189 |
> |
long i = 0; |
190 |
> |
while (tasks.size() < N) { |
191 |
> |
tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1)); |
192 |
> |
i += 10; |
193 |
> |
} |
194 |
> |
|
195 |
> |
int iters = 0; |
196 |
> |
BigInteger sum = BigInteger.ZERO; |
197 |
> |
for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) { |
198 |
> |
try { |
199 |
> |
++iters; |
200 |
> |
sum = sum.add(it.next().call()); |
201 |
> |
} |
202 |
> |
catch (TimeoutException success) { |
203 |
> |
assertTrue(iters > 0); |
204 |
> |
return; |
205 |
> |
} |
206 |
> |
catch (Exception e) { |
207 |
> |
unexpectedException(); |
208 |
> |
} |
209 |
> |
} |
210 |
> |
// if by chance we didn't ever time out, total time must be small |
211 |
> |
long elapsed = System.currentTimeMillis() - startTime; |
212 |
> |
assertTrue(elapsed < N); |
213 |
|
} |
214 |
< |
catch (InterruptedException ex) { |
215 |
< |
fail("Unexpected exception"); |
214 |
> |
finally { |
215 |
> |
joinPool(executor); |
216 |
|
} |
217 |
|
} |
218 |
|
|
219 |
< |
public void testInvokeCallable () { |
219 |
> |
|
220 |
> |
/** |
221 |
> |
* ThreadPoolExecutor using defaultThreadFactory has |
222 |
> |
* specified group, priority, daemon status, and name |
223 |
> |
*/ |
224 |
> |
public void testDefaultThreadFactory() { |
225 |
> |
final ThreadGroup egroup = Thread.currentThread().getThreadGroup(); |
226 |
> |
Runnable r = new Runnable() { |
227 |
> |
public void run() { |
228 |
> |
Thread current = Thread.currentThread(); |
229 |
> |
threadAssertTrue(!current.isDaemon()); |
230 |
> |
threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY); |
231 |
> |
ThreadGroup g = current.getThreadGroup(); |
232 |
> |
SecurityManager s = System.getSecurityManager(); |
233 |
> |
if (s != null) |
234 |
> |
threadAssertTrue(g == s.getThreadGroup()); |
235 |
> |
else |
236 |
> |
threadAssertTrue(g == egroup); |
237 |
> |
String name = current.getName(); |
238 |
> |
threadAssertTrue(name.endsWith("thread-1")); |
239 |
> |
} |
240 |
> |
}; |
241 |
> |
ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory()); |
242 |
> |
|
243 |
> |
e.execute(r); |
244 |
> |
e.shutdown(); |
245 |
|
try { |
246 |
< |
Executor e = new DirectExecutor(); |
247 |
< |
String result = Executors.invoke(e, new StringTask()); |
248 |
< |
|
249 |
< |
assertSame("should return test string", TEST_STRING, result); |
250 |
< |
} |
286 |
< |
catch (ExecutionException ex) { |
287 |
< |
fail("Unexpected exception" ); |
288 |
< |
} |
289 |
< |
catch (InterruptedException ex) { |
290 |
< |
fail("Unexpected exception"); |
246 |
> |
Thread.sleep(SHORT_DELAY_MS); |
247 |
> |
} catch (Exception eX) { |
248 |
> |
unexpectedException(); |
249 |
> |
} finally { |
250 |
> |
joinPool(e); |
251 |
|
} |
252 |
|
} |
253 |
|
|
254 |
< |
private static final String TEST_STRING = "a test string"; |
255 |
< |
|
256 |
< |
private static class Task implements Runnable { |
257 |
< |
public void run() { completed = true; } |
258 |
< |
public boolean isCompleted() { return completed; } |
259 |
< |
public void reset() { completed = false; } |
260 |
< |
private boolean completed = false; |
261 |
< |
} |
262 |
< |
|
263 |
< |
private static class StringTask implements Callable<String> { |
264 |
< |
public String call() { return TEST_STRING; } |
265 |
< |
} |
266 |
< |
|
267 |
< |
static class DirectExecutor implements Executor { |
268 |
< |
public void execute(Runnable r) { |
269 |
< |
r.run(); |
254 |
> |
/** |
255 |
> |
* ThreadPoolExecutor using privilegedThreadFactory has |
256 |
> |
* specified group, priority, daemon status, name, |
257 |
> |
* access control context and context class loader |
258 |
> |
*/ |
259 |
> |
public void testPrivilegedThreadFactory() { |
260 |
> |
Policy savedPolicy = Policy.getPolicy(); |
261 |
> |
AdjustablePolicy policy = new AdjustablePolicy(); |
262 |
> |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
263 |
> |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
264 |
> |
Policy.setPolicy(policy); |
265 |
> |
final ThreadGroup egroup = Thread.currentThread().getThreadGroup(); |
266 |
> |
final ClassLoader thisccl = Thread.currentThread().getContextClassLoader(); |
267 |
> |
final AccessControlContext thisacc = AccessController.getContext(); |
268 |
> |
Runnable r = new Runnable() { |
269 |
> |
public void run() { |
270 |
> |
Thread current = Thread.currentThread(); |
271 |
> |
threadAssertTrue(!current.isDaemon()); |
272 |
> |
threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY); |
273 |
> |
ThreadGroup g = current.getThreadGroup(); |
274 |
> |
SecurityManager s = System.getSecurityManager(); |
275 |
> |
if (s != null) |
276 |
> |
threadAssertTrue(g == s.getThreadGroup()); |
277 |
> |
else |
278 |
> |
threadAssertTrue(g == egroup); |
279 |
> |
String name = current.getName(); |
280 |
> |
threadAssertTrue(name.endsWith("thread-1")); |
281 |
> |
threadAssertTrue(thisccl == current.getContextClassLoader()); |
282 |
> |
threadAssertTrue(thisacc.equals(AccessController.getContext())); |
283 |
> |
} |
284 |
> |
}; |
285 |
> |
ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory()); |
286 |
> |
|
287 |
> |
Policy.setPolicy(savedPolicy); |
288 |
> |
e.execute(r); |
289 |
> |
e.shutdown(); |
290 |
> |
try { |
291 |
> |
Thread.sleep(SHORT_DELAY_MS); |
292 |
> |
} catch (Exception ex) { |
293 |
> |
unexpectedException(); |
294 |
> |
} finally { |
295 |
> |
joinPool(e); |
296 |
|
} |
311 |
– |
} |
297 |
|
|
298 |
+ |
} |
299 |
|
|
300 |
|
} |