Threads.java
2.5 KB
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
package cn.bronet.admin.common.utils;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 线程相关工具类.
*
* @author Alei
*/
public class Threads
{
private static final Logger logger = LoggerFactory.getLogger(Threads.class);
/**
* sleep等待,单位为毫秒
*/
public static void sleep(long milliseconds)
{
try
{
Thread.sleep(milliseconds);
}
catch (InterruptedException e)
{
return;
}
}
/**
* 停止线程池
* 先使用shutdown, 停止接收新任务并尝试完成所有已存在任务.
* 如果超时, 则调用shutdownNow, 取消在workQueue中Pending的任务,并中断所有阻塞函数.
* 如果仍人超時,則強制退出.
* 另对在shutdown时线程本身被调用中断做了处理.
*/
public static void shutdownAndAwaitTermination(ExecutorService pool)
{
if (pool != null && !pool.isShutdown())
{
pool.shutdown();
try
{
if (!pool.awaitTermination(120, TimeUnit.SECONDS))
{
pool.shutdownNow();
if (!pool.awaitTermination(120, TimeUnit.SECONDS))
{
logger.info("Pool did not terminate");
}
}
}
catch (InterruptedException ie)
{
pool.shutdownNow();
Thread.currentThread().interrupt();
}
}
}
/**
* 打印线程异常信息
*/
public static void printException(Runnable r, Throwable t)
{
if (t == null && r instanceof Future<?>)
{
try
{
Future<?> future = (Future<?>) r;
if (future.isDone())
{
future.get();
}
}
catch (CancellationException ce)
{
t = ce;
}
catch (ExecutionException ee)
{
t = ee.getCause();
}
catch (InterruptedException ie)
{
Thread.currentThread().interrupt();
}
}
if (t != null)
{
logger.error(t.getMessage(), t);
}
}
}