Review Request: JDK-8001334 - Remove use of JVM_* functions from java.io code

[Alan Bateman]

Moving to core-libs-dev to allow for wider review. As Dan mentions, 
we've been looking to remove the Solairs-specific interruptible I/O for 
a long time.


-------- Original Message --------
Subject: 	Review Request: JDK-8001334 - Remove use of JVM_* functions 
from java.io code
Date: 	Mon, 21 Jan 2013 23:25:25 -0800
From: 	Dan Xu <dan.xu at oracle.com>
To: 	nio-dev <nio-dev at openjdk.java.net>



Hi,

Interruptible I/O on Solaris has been highly problematicand undercut 
portability. And the long term plan is to remove it completely from JDK. 
In JDK6, the VM option, UseVMInterruptibleIO, was introduced as part of 
a phase-out plan to allow developers/customers to disable it. In JDK7, 
the default value of UseVMInterruptibleIO flag was changed to"false" to 
make Solaris blockingI/O operations uninterruptible by Java thread 
interruptsby default.

The last stepof this phase-out plan is to remove the feature completely. 
And it is good to do it now in JDK8. In this fix, I removed all related 
codes in IO area by replacing JVM_* functions with direct system calls. 
Please help review the proposed fix. Similar changes in networking area 
will be done via a different bug.

Bug: https://jbs.oracle.com/bugs/browse/JDK-8001334
webrev: http://cr.openjdk.java.net/~dxu/8001334/webrev.00/ 
<http://cr.openjdk.java.net/%7Edxu/8001334/webrev.00/>

Best,

-Dan