Java本机进程超时 [英] Java native process timeout
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问题描述
目前我使用以下方法执行本机进程:
At the moment I execute a native process using the following:
java.lang.Process process = Runtime.getRuntime().exec(command);
int returnCode = process.waitFor();
假设我不想等待程序返回,而是希望在经过一定时间后终止.我该怎么做?
Suppose instead of waiting for the program to return I wish to terminate if a certain amount of time has elapsed. How do I do this?
推荐答案
Plexus CommandlineUtils 是这样做的:
This is how the Plexus CommandlineUtils does it:
Process p;
p = cl.execute();
...
if ( timeoutInSeconds <= 0 )
{
returnValue = p.waitFor();
}
else
{
long now = System.currentTimeMillis();
long timeoutInMillis = 1000L * timeoutInSeconds;
long finish = now + timeoutInMillis;
while ( isAlive( p ) && ( System.currentTimeMillis() < finish ) )
{
Thread.sleep( 10 );
}
if ( isAlive( p ) )
{
throw new InterruptedException( "Process timeout out after " + timeoutInSeconds + " seconds" );
}
returnValue = p.exitValue();
}
public static boolean isAlive( Process p ) {
try
{
p.exitValue();
return false;
} catch (IllegalThreadStateException e) {
return true;
}
}
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