hg: jdk10/master: 8164900: Add support for O_DIRECT

[brian.burkhalter at oracle.com]

Changeset: d72d7d55c765
Author:    bpb
Date:      2017-10-17 16:51 -0700
URL:       http://hg.openjdk.java.net/jdk10/master/rev/d72d7d55c765

8164900: Add support for O_DIRECT
Summary: Add support for Direct I/O in FileChannel
Reviewed-by: alanb, bpb, alanbur, coffeys, aph, clanger, plevart, mli, psandoz, simonis
Contributed-by: Lucy Lu <yingqi.lu at intel.com>, Volker Simonis <volker.simonis at gmail.com>

! make/gensrc/GensrcMisc.gmk
! make/jprt.properties
! make/mapfiles/libnio/mapfile-linux
! make/mapfiles/libnio/mapfile-solaris
! make/test/JtregNativeJdk.gmk
! src/java.base/share/classes/java/nio/file/FileStore.java
! src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java
! src/java.base/share/classes/sun/nio/ch/FileDispatcher.java
! src/java.base/share/classes/sun/nio/ch/IOUtil.java
! src/java.base/share/classes/sun/nio/ch/Util.java
! src/java.base/share/classes/sun/nio/fs/ExtendedOptions.java
! src/java.base/unix/classes/sun/nio/ch/FileDispatcherImpl.java
! src/java.base/unix/classes/sun/nio/fs/UnixChannelFactory.java
! src/java.base/unix/classes/sun/nio/fs/UnixConstants.java.template
! src/java.base/unix/classes/sun/nio/fs/UnixFileStore.java
! src/java.base/unix/native/libnio/ch/FileChannelImpl.c
! src/java.base/unix/native/libnio/ch/FileDispatcherImpl.c
! src/java.base/windows/classes/sun/nio/ch/FileDispatcherImpl.java
! src/java.base/windows/classes/sun/nio/fs/WindowsChannelFactory.java
! src/java.base/windows/classes/sun/nio/fs/WindowsFileStore.java
! src/java.base/windows/classes/sun/nio/fs/WindowsNativeDispatcher.java
! src/java.base/windows/native/libnio/ch/FileDispatcherImpl.c
! src/java.base/windows/native/libnio/fs/WindowsNativeDispatcher.c
! src/jdk.unsupported/share/classes/com/sun/nio/file/ExtendedOpenOption.java
+ test/jdk/java/nio/channels/FileChannel/directio/DirectIOTest.java
+ test/jdk/java/nio/channels/FileChannel/directio/PreadDirect.java
+ test/jdk/java/nio/channels/FileChannel/directio/PwriteDirect.java
+ test/jdk/java/nio/channels/FileChannel/directio/ReadDirect.java
+ test/jdk/java/nio/channels/FileChannel/directio/WriteDirect.java
+ test/jdk/java/nio/channels/FileChannel/directio/libDirectIO.c