Hello.
Atsuhiko Yamanaka wrote:
> You know that, on some JVMs which adopt the Green Thread,
> the blocking I/O will block other threads, unfortunately.
Oh, I didn't know that. Exec.java calls Thread.sleep(1000); to avoid
blocking other threads while current thread is blocked at InputStream.read().
Then, regarding JVMs where InputStream.read() doesn't block other threads,
it is OK to call like
while(true) {
int i = in.read(tmp, 0, 1024);
if(i < 0) break;
System.out.print(new String(tmp, 0, i));
}
for simplicity, isn't it? (Please mention if I'm wrong.)
But, from the point of view of portability, such coding should be avoided.
> Please refer to RFC4254, Section 5.3 "Closing a Channel"
> for meanings for CLOSE and EOF.
>
> As for usage about them in Exec.java,
> the exit-status code may not be sent even if EOF is given,
> but it may be after accepting CLOSE, according to RFC4254.
>
> [1] http://rfc.net/rfc4254.html
So, I had better not to call channel.getExitStatus() before
channel.isClosed() returns true. I see.
Thank you.
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