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Faster memory copy between direct buffer and byte array (part 2)

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This commit is contained in:
Trustin Lee 2013-02-09 02:09:37 +09:00
parent 9a676bc7d5
commit 43af599d52
1 changed files with 34 additions and 37 deletions
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71
buffer/src/main/java/io/netty/buffer/PooledUnsafeDirectByteBuf.java
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@ -102,13 +102,15 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
@Override
public ByteBuf getBytes(int index, ByteBuf dst, int dstIndex, int length) {
checkIndex(index, length);
if (dst instanceof PooledUnsafeDirectByteBuf) {
PooledUnsafeDirectByteBuf bbdst = (PooledUnsafeDirectByteBuf) dst;
PlatformDependent.copyMemory(addr(index), bbdst.addr(dstIndex), length);
} else if (dst.hasArray()) {
PlatformDependent.copyMemory(addr(index), dst.array(), dst.arrayOffset() + dstIndex, length);
} else {
dst.setBytes(dstIndex, this, index, length);
if (length != 0) {
if (dst instanceof PooledUnsafeDirectByteBuf) {
PooledUnsafeDirectByteBuf bbdst = (PooledUnsafeDirectByteBuf) dst;
PlatformDependent.copyMemory(addr(index), bbdst.addr(dstIndex), length);
} else if (dst.hasArray()) {
PlatformDependent.copyMemory(addr(index), dst.array(), dst.arrayOffset() + dstIndex, length);
} else {
dst.setBytes(dstIndex, this, index, length);
}
}
return this;
}
@ -116,10 +118,9 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
@Override
public ByteBuf getBytes(int index, byte[] dst, int dstIndex, int length) {
checkIndex(index, length);
ByteBuffer tmpBuf = internalNioBuffer();
index = idx(index);
tmpBuf.clear().position(index).limit(index + length);
tmpBuf.get(dst, dstIndex, length);
if (length != 0) {
PlatformDependent.copyMemory(addr(index), dst, dstIndex, length);
}
return this;
}
@ -137,15 +138,11 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
@Override
public ByteBuf getBytes(int index, OutputStream out, int length) throws IOException {
checkIndex(index, length);
if (length == 0) {
return this;
if (length != 0) {
byte[] tmp = new byte[length];
PlatformDependent.copyMemory(addr(index), tmp, 0, length);
out.write(tmp);
}
byte[] tmp = new byte[length];
ByteBuffer tmpBuf = internalNioBuffer();
tmpBuf.clear().position(idx(index));
tmpBuf.get(tmp);
out.write(tmp);
return this;
}
@ -203,13 +200,15 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
@Override
public ByteBuf setBytes(int index, ByteBuf src, int srcIndex, int length) {
checkIndex(index, length);
if (src instanceof PooledUnsafeDirectByteBuf) {
PooledUnsafeDirectByteBuf bbsrc = (PooledUnsafeDirectByteBuf) src;
PlatformDependent.copyMemory(bbsrc.addr(srcIndex), addr(index), length);
} else if (src.hasArray()) {
PlatformDependent.copyMemory(src.array(), src.arrayOffset() + srcIndex, addr(index), length);
} else {
src.getBytes(srcIndex, this, index, length);
if (length != 0) {
if (src instanceof PooledUnsafeDirectByteBuf) {
PooledUnsafeDirectByteBuf bbsrc = (PooledUnsafeDirectByteBuf) src;
PlatformDependent.copyMemory(bbsrc.addr(srcIndex), addr(index), length);
} else if (src.hasArray()) {
PlatformDependent.copyMemory(src.array(), src.arrayOffset() + srcIndex, addr(index), length);
} else {
src.getBytes(srcIndex, this, index, length);
}
}
return this;
}
@ -217,10 +216,9 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
@Override
public ByteBuf setBytes(int index, byte[] src, int srcIndex, int length) {
checkIndex(index, length);
ByteBuffer tmpBuf = internalNioBuffer();
index = idx(index);
tmpBuf.clear().position(index).limit(index + length);
tmpBuf.put(src, srcIndex, length);
if (length != 0) {
PlatformDependent.copyMemory(src, srcIndex, addr(index), length);
}
return this;
}
@ -243,12 +241,9 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
checkIndex(index, length);
byte[] tmp = new byte[length];
int readBytes = in.read(tmp);
if (readBytes <= 0) {
return readBytes;
if (readBytes > 0) {
PlatformDependent.copyMemory(tmp, 0, addr(index), readBytes);
}
ByteBuffer tmpNioBuf = internalNioBuffer();
tmpNioBuf.clear().position(idx(index));
tmpNioBuf.put(tmp, 0, readBytes);
return readBytes;
}
@ -269,8 +264,10 @@ final class PooledUnsafeDirectByteBuf extends PooledByteBuf<ByteBuffer> {
public ByteBuf copy(int index, int length) {
checkIndex(index, length);
PooledUnsafeDirectByteBuf copy = (PooledUnsafeDirectByteBuf) alloc().directBuffer(capacity(), maxCapacity());
PlatformDependent.copyMemory(addr(index), copy.addr(index), length);
copy.setIndex(index, index + length);
if (length != 0) {
PlatformDependent.copyMemory(addr(index), copy.addr(index), length);
copy.setIndex(index, index + length);
}
return copy;
}