[Integrated] [foreign-memaccess] RFR: JDK-8243064: Add more support for mapped memory segments

[Maurizio Cimadamore]

Changeset: ef155501
Author:    Maurizio Cimadamore <mcimadamore at openjdk.org>
Date:      2020-04-21 10:06:29 +0000
URL:       https://git.openjdk.java.net/panama-foreign/commit/ef155501

JDK-8243064: Add more support for mapped memory segments

Reviewed-by: psandoz, jvernee

! src/java.base/share/classes/java/nio/Buffer.java
! src/java.base/share/classes/java/nio/MappedByteBuffer.java
+ src/java.base/share/classes/java/nio/MappedMemoryUtils.java
! src/java.base/share/classes/jdk/internal/access/JavaNioAccess.java
- src/java.base/unix/native/libnio/MappedByteBuffer.c
+ src/java.base/unix/native/libnio/MappedMemoryUtils.c
- src/java.base/windows/native/libnio/MappedByteBuffer.c
+ src/java.base/windows/native/libnio/MappedMemoryUtils.c
+ src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/MappedMemorySegment.java
! src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/MemorySegment.java
! src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/AbstractMemorySegmentImpl.java
! src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/HeapMemorySegmentImpl.java
! src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/MappedMemorySegmentImpl.java
! src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/MemoryAddressImpl.java
! src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/NativeMemorySegmentImpl.java
! test/jdk/java/foreign/TestByteBuffer.java
! test/jdk/java/foreign/TestSegments.java
! test/jdk/java/foreign/TestSharedAccess.java
! test/jdk/java/foreign/TestSpliterator.java
! test/jdk/java/util/stream/test/org/openjdk/tests/java/util/stream/SpliteratorTest.java
! test/micro/org/openjdk/bench/jdk/incubator/foreign/ParallelSum.java