Java Code Examples for sun.misc.Unsafe#ARRAY_BYTE_BASE_OFFSET
The following examples show how to use
sun.misc.Unsafe#ARRAY_BYTE_BASE_OFFSET .
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Example 1
| Source File: RenderBuffer.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
public RenderBuffer put(byte[] x, int offset, int length) {
if (length > COPY_FROM_ARRAY_THRESHOLD) {
long offsetInBytes = offset * SIZEOF_BYTE + Unsafe.ARRAY_BYTE_BASE_OFFSET;
long lengthInBytes = length * SIZEOF_BYTE;
unsafe.copyMemory(x, offsetInBytes, null, curAddress, lengthInBytes);
position(position() + lengthInBytes);
} else {
int end = offset + length;
for (int i = offset; i < end; i++) {
putByte(x[i]);
}
}
return this;
}
Example 2
| Source File: RenderBuffer.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 5 votes |
|
public RenderBuffer put(byte[] x, int offset, int length) {
if (length > COPY_FROM_ARRAY_THRESHOLD) {
long offsetInBytes = offset * SIZEOF_BYTE + Unsafe.ARRAY_BYTE_BASE_OFFSET;
long lengthInBytes = length * SIZEOF_BYTE;
unsafe.copyMemory(x, offsetInBytes, null, curAddress, lengthInBytes);
position(position() + lengthInBytes);
} else {
int end = offset + length;
for (int i = offset; i < end; i++) {
putByte(x[i]);
}
}
return this;
}
Example 3
| Source File: RenderBuffer.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
public RenderBuffer put(byte[] x, int offset, int length) {
if (length > COPY_FROM_ARRAY_THRESHOLD) {
long offsetInBytes = offset * SIZEOF_BYTE + Unsafe.ARRAY_BYTE_BASE_OFFSET;
long lengthInBytes = length * SIZEOF_BYTE;
unsafe.copyMemory(x, offsetInBytes, null, curAddress, lengthInBytes);
position(position() + lengthInBytes);
} else {
int end = offset + length;
for (int i = offset; i < end; i++) {
putByte(x[i]);
}
}
return this;
}
Example 4
| Source File: RenderBuffer.java From openjdk-8 with GNU General Public License v2.0 | 5 votes |
|
public RenderBuffer put(byte[] x, int offset, int length) {
if (length > COPY_FROM_ARRAY_THRESHOLD) {
long offsetInBytes = offset * SIZEOF_BYTE + Unsafe.ARRAY_BYTE_BASE_OFFSET;
long lengthInBytes = length * SIZEOF_BYTE;
unsafe.copyMemory(x, offsetInBytes, null, curAddress, lengthInBytes);
position(position() + lengthInBytes);
} else {
int end = offset + length;
for (int i = offset; i < end; i++) {
putByte(x[i]);
}
}
return this;
}
Example 5
| Source File: RenderBuffer.java From hottub with GNU General Public License v2.0 | 5 votes |
|
public RenderBuffer put(byte[] x, int offset, int length) {
if (length > COPY_FROM_ARRAY_THRESHOLD) {
long offsetInBytes = offset * SIZEOF_BYTE + Unsafe.ARRAY_BYTE_BASE_OFFSET;
long lengthInBytes = length * SIZEOF_BYTE;
unsafe.copyMemory(x, offsetInBytes, null, curAddress, lengthInBytes);
position(position() + lengthInBytes);
} else {
int end = offset + length;
for (int i = offset; i < end; i++) {
putByte(x[i]);
}
}
return this;
}
Example 6
| Source File: BitBlt.java From trufflesqueak with MIT License | 5 votes |
|
private boolean loadBitBltDestForm() {
if (!(isPointers(destForm) && slotSizeOf(destForm) >= 4)) {
return false;
}
final Object destBitsValue = fetchPointerofObject(FORM.BITS, destForm);
destWidth = fetchIntegerofObject(FORM.WIDTH, destForm);
destHeight = fetchIntegerofObject(FORM.HEIGHT, destForm);
if (!(destWidth >= 0 && destHeight >= 0)) {
return false;
}
destDepth = fetchIntegerofObject(FORM.DEPTH, destForm);
if (!(destMSB = destDepth > 0)) {
destDepth = 0 - destDepth;
}
if (!isWordsOrBytes(destBitsValue)) {
if (destBitsValue instanceof Long) {
throw SqueakException.create("Not supported: Query for actual surface dimensions");
} else {
return false;
}
}
destPPW = div(32, destDepth);
destPitch = div(destWidth + destPPW - 1, destPPW) * 4;
final NativeObject destBitsNative = (NativeObject) destBitsValue;
final long destBitsSize;
if (isWords(destBitsNative)) {
destBits = destBitsNative.getIntStorage();
destBitsSize = destBitsNative.getIntLength() * Integer.BYTES;
destBitsBaseOffset = Unsafe.ARRAY_INT_BASE_OFFSET;
destBitsIndexScale = Unsafe.ARRAY_INT_INDEX_SCALE;
} else {
destBits = destBitsNative.getByteStorage();
destBitsSize = destBitsNative.getByteLength();
destBitsBaseOffset = Unsafe.ARRAY_BYTE_BASE_OFFSET;
destBitsIndexScale = Unsafe.ARRAY_BYTE_INDEX_SCALE * Integer.BYTES;
}
return destBitsSize >= destPitch * destHeight;
}
Example 7
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
@Override
public int write(String name, ByteBuffer src) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), false, true);
int pos = src.position();
int lim = src.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (src instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)src).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
if (src.hasArray()) {
// copy from backing array into buffer
int off = src.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(src.array(), off, null, address, rem);
} else {
// backing array not accessible so transfer via temporary array
byte[] tmp = new byte[rem];
src.get(tmp);
src.position(pos); // reset position as write may fail
unsafe.copyMemory(tmp, Unsafe.ARRAY_BYTE_BASE_OFFSET, null,
address, rem);
}
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
fsetxattr(fd, nameAsBytes(file,name), address, rem);
src.position(pos + rem);
return rem;
} catch (UnixException x) {
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error writing extended attribute '" + name + "': " +
x.getMessage());
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 8
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 9
| Source File: LinuxUserDefinedFileAttributeView.java From hottub with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 10
| Source File: LinuxUserDefinedFileAttributeView.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
@Override
public int write(String name, ByteBuffer src) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), false, true);
int pos = src.position();
int lim = src.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (src instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)src).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
if (src.hasArray()) {
// copy from backing array into buffer
int off = src.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(src.array(), off, null, address, rem);
} else {
// backing array not accessible so transfer via temporary array
byte[] tmp = new byte[rem];
src.get(tmp);
src.position(pos); // reset position as write may fail
unsafe.copyMemory(tmp, Unsafe.ARRAY_BYTE_BASE_OFFSET, null,
address, rem);
}
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
fsetxattr(fd, nameAsBytes(file,name), address, rem);
src.position(pos + rem);
return rem;
} catch (UnixException x) {
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error writing extended attribute '" + name + "': " +
x.getMessage());
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 11
| Source File: LinuxUserDefinedFileAttributeView.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 12
| Source File: LinuxUserDefinedFileAttributeView.java From hottub with GNU General Public License v2.0 | 4 votes |
|
@Override
public int write(String name, ByteBuffer src) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), false, true);
int pos = src.position();
int lim = src.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (src instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)src).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
if (src.hasArray()) {
// copy from backing array into buffer
int off = src.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(src.array(), off, null, address, rem);
} else {
// backing array not accessible so transfer via temporary array
byte[] tmp = new byte[rem];
src.get(tmp);
src.position(pos); // reset position as write may fail
unsafe.copyMemory(tmp, Unsafe.ARRAY_BYTE_BASE_OFFSET, null,
address, rem);
}
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
fsetxattr(fd, nameAsBytes(file,name), address, rem);
src.position(pos + rem);
return rem;
} catch (UnixException x) {
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error writing extended attribute '" + name + "': " +
x.getMessage());
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 13
| Source File: LinuxUserDefinedFileAttributeView.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
@Override
public int write(String name, ByteBuffer src) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), false, true);
int pos = src.position();
int lim = src.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (src instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)src).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
if (src.hasArray()) {
// copy from backing array into buffer
int off = src.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(src.array(), off, null, address, rem);
} else {
// backing array not accessible so transfer via temporary array
byte[] tmp = new byte[rem];
src.get(tmp);
src.position(pos); // reset position as write may fail
unsafe.copyMemory(tmp, Unsafe.ARRAY_BYTE_BASE_OFFSET, null,
address, rem);
}
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
fsetxattr(fd, nameAsBytes(file,name), address, rem);
src.position(pos + rem);
return rem;
} catch (UnixException x) {
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error writing extended attribute '" + name + "': " +
x.getMessage());
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 14
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 15
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
|
@Override
public int write(String name, ByteBuffer src) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), false, true);
int pos = src.position();
int lim = src.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (src instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)src).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
if (src.hasArray()) {
// copy from backing array into buffer
int off = src.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(src.array(), off, null, address, rem);
} else {
// backing array not accessible so transfer via temporary array
byte[] tmp = new byte[rem];
src.get(tmp);
src.position(pos); // reset position as write may fail
unsafe.copyMemory(tmp, Unsafe.ARRAY_BYTE_BASE_OFFSET, null,
address, rem);
}
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
fsetxattr(fd, nameAsBytes(file,name), address, rem);
src.position(pos + rem);
return rem;
} catch (UnixException x) {
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error writing extended attribute '" + name + "': " +
x.getMessage());
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 16
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u60 with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 17
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u_jdk with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 18
| Source File: LinuxUserDefinedFileAttributeView.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 4 votes |
|
@Override
public int write(String name, ByteBuffer src) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), false, true);
int pos = src.position();
int lim = src.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (src instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)src).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
if (src.hasArray()) {
// copy from backing array into buffer
int off = src.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(src.array(), off, null, address, rem);
} else {
// backing array not accessible so transfer via temporary array
byte[] tmp = new byte[rem];
src.get(tmp);
src.position(pos); // reset position as write may fail
unsafe.copyMemory(tmp, Unsafe.ARRAY_BYTE_BASE_OFFSET, null,
address, rem);
}
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
fsetxattr(fd, nameAsBytes(file,name), address, rem);
src.position(pos + rem);
return rem;
} catch (UnixException x) {
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error writing extended attribute '" + name + "': " +
x.getMessage());
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 19
| Source File: LinuxUserDefinedFileAttributeView.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
Example 20
| Source File: LinuxUserDefinedFileAttributeView.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
|
@Override
public int read(String name, ByteBuffer dst) throws IOException {
if (System.getSecurityManager() != null)
checkAccess(file.getPathForPermissionCheck(), true, false);
if (dst.isReadOnly())
throw new IllegalArgumentException("Read-only buffer");
int pos = dst.position();
int lim = dst.limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
NativeBuffer nb;
long address;
if (dst instanceof sun.nio.ch.DirectBuffer) {
nb = null;
address = ((sun.nio.ch.DirectBuffer)dst).address() + pos;
} else {
// substitute with native buffer
nb = NativeBuffers.getNativeBuffer(rem);
address = nb.address();
}
int fd = file.openForAttributeAccess(followLinks);
try {
try {
int n = fgetxattr(fd, nameAsBytes(file,name), address, rem);
// if remaining is zero then fgetxattr returns the size
if (rem == 0) {
if (n > 0)
throw new UnixException(ERANGE);
return 0;
}
// copy from buffer into backing array if necessary
if (nb != null) {
int off = dst.arrayOffset() + pos + Unsafe.ARRAY_BYTE_BASE_OFFSET;
unsafe.copyMemory(null, address, dst.array(), off, n);
}
dst.position(pos + n);
return n;
} catch (UnixException x) {
String msg = (x.errno() == ERANGE) ?
"Insufficient space in buffer" : x.getMessage();
throw new FileSystemException(file.getPathForExceptionMessage(),
null, "Error reading extended attribute '" + name + "': " + msg);
} finally {
close(fd);
}
} finally {
if (nb != null)
nb.release();
}
}
