hg: jdk/sandbox: 8217461: (ch) Add Net.available to return the number of bytes in the socket input buffer

[chris.hegarty at oracle.com]

Changeset: 6f02e036630e
Author:    alanb
Date:      2019-01-22 16:39 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/6f02e036630e

8217461: (ch) Add Net.available to return the number of bytes in the socket input buffer
Reviewed-by: clanger, michaelm

! src/java.base/share/classes/sun/nio/ch/Net.java
! src/java.base/share/native/libnet/net_util.h
! src/java.base/unix/native/libnet/PlainSocketImpl.c
! src/java.base/unix/native/libnet/net_util_md.c
! src/java.base/unix/native/libnet/net_util_md.h
! src/java.base/unix/native/libnio/ch/Net.c
! src/java.base/windows/native/libnet/net_util_md.c
! src/java.base/windows/native/libnio/ch/Net.c