archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 15:24:43 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8293331: Refactor FileDispatcherImpl into operating system-specific components

Browse source 
Reviewed-by: alanb
This commit is contained in:
Brian Burkhalter 2022-09-22 15:59:05 +00:00
parent f751e6087d
commit 48cc15602b
14 changed files with 959 additions and 704 deletions
Download patch file Download diff file Expand all files Collapse all files

50
src/java.base/unix/classes/sun/nio/ch/FileDispatcherImpl.java → src/java.base/unix/classes/sun/nio/ch/UnixFileDispatcherImpl.java
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -31,7 +31,11 @@ import java.io.IOException;
import jdk.internal.access.JavaIOFileDescriptorAccess;
import jdk.internal.access.SharedSecrets;
class FileDispatcherImpl extends FileDispatcher {
class UnixFileDispatcherImpl extends FileDispatcher {
private static final int MAP_INVALID = -1;
private static final int MAP_RO = 0;
private static final int MAP_RW = 1;
private static final int MAP_PV = 2;
static {
IOUtil.load();
@ -41,7 +45,7 @@ class FileDispatcherImpl extends FileDispatcher {
private static final JavaIOFileDescriptorAccess fdAccess =
SharedSecrets.getJavaIOFileDescriptorAccess();
FileDispatcherImpl() {
UnixFileDispatcherImpl() {
}
int read(FileDescriptor fd, long address, int len) throws IOException {
@ -127,7 +131,36 @@ class FileDispatcherImpl extends FileDispatcher {
}
boolean canTransferToFromOverlappedMap() {
return canTransferToFromOverlappedMap0();
return true;
}
long allocationGranularity() {
return allocationGranularity0();
}
long map(FileDescriptor fd, int prot, long position, long length,
boolean isSync)
throws IOException
{
return map0(fd, prot, position, length, isSync);
}
int unmap(long address, long length) {
return unmap0(address, length);
}
int maxDirectTransferSize() {
return Integer.MAX_VALUE;
}
long transferTo(FileDescriptor src, long position, long count,
FileDescriptor dst, boolean append) {
return IOStatus.UNSUPPORTED;
}
long transferFrom(FileDescriptor src, FileDescriptor dst,
long position, long count, boolean append) {
return IOStatus.UNSUPPORTED;
}
int setDirectIO(FileDescriptor fd, String path) {
@ -188,10 +221,15 @@ class FileDispatcherImpl extends FileDispatcher {
static native void closeIntFD(int fd) throws IOException;
static native boolean canTransferToFromOverlappedMap0();
static native long allocationGranularity0();
static native long map0(FileDescriptor fd, int prot, long position,
long length, boolean isSync)
throws IOException;
static native int unmap0(long address, long length);
static native int setDirect0(FileDescriptor fd) throws IOException;
static native void init();
}