@Override
@ForceInline
public void write(long offsetInRDO, @NotNull ByteBuffer bytes, int offset, int length) {
if (bytes.isDirect()) {
memory.copyMemory(((DirectBuffer) bytes).address(), address + translate(offsetInRDO), length);
} else {
memory.copyMemory(bytes.array(), offset, address + translate(offsetInRDO), length);
}
}
public int byteCheckSum() throws IORuntimeException {
if (readLimit() >= Integer.MAX_VALUE || start() != 0) throw new AssertionError();
byte b = 0;
NativeBytesStore bytesStore = (NativeBytesStore) bytesStore();
Memory memory = bytesStore.memory;
assert memory != null;
for (int i = (int) readPosition(), lim = (int) readLimit(); i < lim; i++) {
b += memory.readByte(bytesStore.address + i);
}
return b & 0xFF;
}
@NotNull
private static NativeBytesStore<Void> of(long capacity, boolean zeroOut, boolean elastic)
throws IllegalArgumentException {
Memory memory = OS.memory();
long address = memory.allocate(capacity);
if (zeroOut || capacity < MEMORY_MAPPED_SIZE) {
memory.setMemory(address, capacity, (byte) 0);
memory.storeFence();
}
Deallocator deallocator = new Deallocator(address, capacity);
return new NativeBytesStore<>(address, capacity, deallocator, elastic);
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> writeFloat(long offset, float f) {
memory.writeFloat(address + translate(offset), f);
return this;
}
@Override
@ForceInline
public byte readByte(long offset) {
if (Jvm.isDebug()) checkReleased();
return memory.readByte(address + translate(offset));
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> writeDouble(long offset, double d) {
memory.writeDouble(address + translate(offset), d);
return this;
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> writeVolatileShort(long offset, short i16) {
memory.writeVolatileShort(address + translate(offset), i16);
return this;
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> writeVolatileLong(long offset, long i64) {
memory.writeVolatileLong(address + translate(offset), i64);
return this;
}
public long appendUTF(long pos, char[] chars, int offset, int length) {
long address = this.address + translate(0);
Memory memory = this.memory;
int i;
ascii:
{
for (i = 0; i < length; i++) {
char c = chars[offset + i];
if (c > 0x007F) break ascii;
memory.writeByte(address + pos++, (byte) c);
}
return pos;
}
return appendUTF0(pos, chars, offset, length, i);
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> writeOrderedInt(long offset, int i) {
memory.writeOrderedInt(address + translate(offset), i);
return this;
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> write(
long offsetInRDO, byte[] bytes, int offset, int length) {
memory.copyMemory(bytes, offset, address + translate(offsetInRDO), length);
return this;
}
public long readIncompleteLong(long offset) {
int remaining = (int) Math.min(8, readRemaining() - offset);
long l = 0;
for (int i = 0; i < remaining; i++) {
byte b = memory.readByte(address + offset + i);
l |= (long) (b & 0xFF) << (i * 8);
}
return l;
}
@NotNull
public Bytes<Underlying> append8bit(@NotNull CharSequence cs)
throws BufferOverflowException, BufferUnderflowException, IORuntimeException {
if (cs instanceof BytesStore) {
return write((BytesStore) cs);
}
int length = cs.length();
long offset = writeOffsetPositionMoved(length);
long address = bytesStore.address(offset);
Memory memory = bytesStore.memory;
assert memory != null;
for (int i = 0; i < length; i++) {
char c = cs.charAt(i);
if (c > 255) c = '?';
memory.writeByte(address + i, (byte) c);
}
return this;
}
public static void entries(long address, long entries) {
if (entries >= (1L << 32)) {
throw new IllegalStateException(
"tier entries overflow: up to "
+ UNSIGNED_INT_MASK
+ " supported, "
+ entries
+ " given");
}
memory.writeInt(address + ENTRIES_OFFSET, (int) entries);
}
public static void deleted(long address, long deleted) {
if (deleted >= (1L << 32)) {
throw new IllegalStateException(
"tier deleted entries count overflow: up to "
+ UNSIGNED_INT_MASK
+ " supported, "
+ deleted
+ " given");
}
memory.writeInt(address + DELETED_OFFSET, (int) deleted);
}
@Override
public boolean isEqual(String s) {
if (s == null || s.length() != readRemaining()) return false;
char[] chars = StringUtils.extractChars(s);
if (bytesStore instanceof NativeBytesStore) {
NativeBytesStore bs = (NativeBytesStore) this.bytesStore;
long address = bs.address + bs.translate(readPosition);
Memory memory = bs.memory;
for (int i = 0; i < chars.length; i++) {
int b = memory.readByte(address + i) & 0xFF;
if (b != chars[i]) return false;
}
} else {
try {
for (int i = 0; i < chars.length; i++) {
int b = bytesStore.readByte(readPosition + i) & 0xFF;
if (b != chars[i]) return false;
}
} catch (IORuntimeException e) {
throw new AssertionError(e);
}
}
return true;
}
@NotNull
@Override
@ForceInline
public NativeBytesStore<Underlying> zeroOut(long start, long end)
throws IllegalArgumentException {
if (start < writePosition() || end > writeLimit())
throw new IllegalArgumentException(
"position: "
+ writePosition()
+ ", start: "
+ start
+ ", end: "
+ end
+ ", limit: "
+ writeLimit());
if (start >= end) return this;
memory.setMemory(address + translate(start), end - start, (byte) 0);
return this;
}
@Override
@ForceInline
public byte readVolatileByte(long offset) {
return memory.readVolatileByte(address + translate(offset));
}
public static int tier(long address) {
return memory.readInt(address + TIER_OFFSET);
}
public static void tier(long address, int tier) {
memory.writeInt(address + TIER_OFFSET, tier);
}
void read8bit(long position, char[] chars, int length) {
long addr = address + translate(position);
Memory memory = OS.memory();
for (int i = 0; i < length; i++) chars[i] = (char) (memory.readByte(addr + i) & 0xFF);
}
void write8bit(long position, char[] chars, int offset, int length) {
long addr = address + translate(position);
Memory memory = this.memory;
for (int i = 0; i < length; i++) memory.writeByte(addr + i, (byte) chars[offset + i]);
}
public static long entries(long address) {
return memory.readInt(address + ENTRIES_OFFSET) & UNSIGNED_INT_MASK;
}
public static long deleted(long address) {
return memory.readInt(address + DELETED_OFFSET) & UNSIGNED_INT_MASK;
}
@Override
@ForceInline
public boolean compareAndSwapLong(long offset, long expected, long value) {
return memory.compareAndSwapLong(address + translate(offset), expected, value);
}
@Override
@ForceInline
public float readFloat(long offset) {
return memory.readFloat(address + translate(offset));
}
@Override
@ForceInline
public double readDouble(long offset) {
return memory.readDouble(address + translate(offset));
}
@Override
@ForceInline
public long readVolatileLong(long offset) {
return memory.readVolatileLong(address + translate(offset));
}
@Override
@ForceInline
public short readVolatileShort(long offset) {
return memory.readVolatileShort(address + translate(offset));
}
public static void segmentIndex(long address, int segmentIndex) {
memory.writeInt(address + SEGMENT_INDEX_OFFSET, segmentIndex);
}
