public class LongValueBitSet extends net.openhft.chronicle.core.io.AbstractCloseable implements Marshallable
BitSet
is intended to be shared between processes. To minimize locking constraints, it is implemented as a lock-free solution
without support for resizing.CHECK_THREAD_SAFETY, WARN_NS
EMPTY
DISCARD
Constructor and Description |
---|
LongValueBitSet(int maxNumberOfBits) |
LongValueBitSet(int maxNumberOfBits,
Wire w) |
Modifier and Type | Method and Description |
---|---|
void |
and(LongValueBitSet set)
Performs a logical AND of this target bit set with the argument bit set.
|
void |
andNot(LongValueBitSet set)
Clears all of the bits in this
BitSet whose corresponding bit is set in the specified BitSet . |
int |
cardinality()
Returns the number of bits set to
true in this BitSet . |
void |
clear()
Sets all of the bits in this BitSet to
false . |
void |
clear(int bitIndex)
Sets the bit specified by the index to
false . |
void |
clear(int fromIndex,
int toIndex)
Sets the bits from the specified
fromIndex (inclusive) to the specified toIndex (exclusive) to false . |
boolean |
equals(Object obj)
Compares this object against the specified object.
|
void |
flip(int bitIndex)
Sets the bit at the specified index to the complement of its current value.
|
void |
flip(int fromIndex,
int toIndex)
Sets each bit from the specified
fromIndex (inclusive) to the specified toIndex (exclusive) to the complement of its current
value. |
boolean |
get(int bitIndex)
Returns the value of the bit with the specified index.
|
int |
hashCode()
Returns the hash code value for this bit set.
|
boolean |
intersects(LongValueBitSet set)
Returns true if the specified
BitSet has any bits set to true that are also set to true in this BitSet . |
boolean |
isEmpty()
Returns true if this
BitSet contains no bits that are set to true . |
int |
length()
Returns the "logical size" of this
BitSet : the index of the highest set bit in the BitSet plus one. |
int |
nextClearBit(int fromIndex)
Returns the index of the first bit that is set to
false that occurs on or after the specified starting index. |
int |
nextSetBit(int fromIndex)
Returns the index of the first bit that is set to
true that occurs on or after the specified starting index. |
int |
nextSetBit(int fromIndex,
int toIndex)
Returns the index of the first bit that is set to
true that occurs on or after the specified starting index. |
void |
or(LongValueBitSet set)
Performs a logical OR of this bit set with the bit set argument.
|
protected void |
performClose() |
int |
previousClearBit(int fromIndex)
Returns the index of the nearest bit that is set to
false that occurs on or before the specified starting index. |
int |
previousSetBit(int fromIndex)
Returns the index of the nearest bit that is set to
true that occurs on or before the specified starting index. |
void |
readMarshallable(@NotNull WireIn wire)
Straight line ordered decoding.
|
void |
set(int bitIndex)
Sets the bit at the specified index to
true . |
void |
set(int bitIndex,
boolean value)
Sets the bit at the specified index to the specified value.
|
void |
set(int fromIndex,
int toIndex)
Sets the bits from the specified
fromIndex (inclusive) to the specified toIndex (exclusive) to true . |
void |
set(int fromIndex,
int toIndex,
boolean value)
Sets the bits from the specified
fromIndex (inclusive) to the specified toIndex (exclusive) to the specified value. |
void |
set(net.openhft.chronicle.core.values.LongValue word,
long newValue) |
void |
set(net.openhft.chronicle.core.values.LongValue word,
long param,
net.openhft.chronicle.wire.LongValueBitSet.LongFunction function) |
int |
size()
Returns the number of bits of space actually in use by this
BitSet to represent bit values. |
IntStream |
stream()
Returns a stream of indices for which this
BitSet contains a bit in the set state. |
protected boolean |
threadSafetyCheck(boolean isUsed) |
byte[] |
toByteArray()
Returns a new byte array containing all the bits in this bit set.
|
String |
toString()
Returns a string representation of this bit set.
|
static BitSet |
valueOf(byte[] bytes)
Returns a new bit set containing all the bits in the given byte array.
|
void |
writeMarshallable(@NotNull WireOut wire)
Write data to the wire
|
void |
xor(LongValueBitSet set)
Performs a logical XOR of this bit set with the bit set argument.
|
assertCloseablesClosed, clearUsedByThread, close, createdHere, disableCloseableTracing, enableCloseableTracing, isClosed, isClosing, isInUserThread, performCloseInBackground, referenceId, resetUsedByThread, shouldPerformCloseInBackground, shouldWaitForClosed, throwExceptionIfClosed, throwExceptionIfClosedInSetter, unmonitor, waitForClosed, warnAndCloseIfNotClosed
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
$equals, $fieldInfos, $hashCode, $toString, className, copyFrom, copyTo, deepCopy, fromFile, fromFile, fromFileAsMap, fromFileAsMap, fromHexString, fromString, fromString, fromString, getField, mergeToMap, reset, setField, streamFromFile, streamFromFile, usesSelfDescribingMessage
writeValue
unexpectedField
public LongValueBitSet(int maxNumberOfBits)
public LongValueBitSet(int maxNumberOfBits, Wire w)
public static BitSet valueOf(byte[] bytes)
More precisely,
BitSet.valueOf(bytes).get(n) == ((bytes[n/8] & (1<<(n%8))) != 0)
for all n < 8 * bytes.length
.
This method is equivalent to
BitSet.valueOf(ByteBuffer.wrap(bytes))
.
bytes
- a byte array containing a little-endian representation of a sequence of bits to be used as the initial bits of the new bit setBitSet
containing all the bits in the byte arrayprotected boolean threadSafetyCheck(boolean isUsed)
threadSafetyCheck
in class net.openhft.chronicle.core.io.AbstractCloseable
protected void performClose()
performClose
in class net.openhft.chronicle.core.io.AbstractCloseable
public void set(net.openhft.chronicle.core.values.LongValue word, long param, net.openhft.chronicle.wire.LongValueBitSet.LongFunction function)
public void set(net.openhft.chronicle.core.values.LongValue word, long newValue)
public byte[] toByteArray()
More precisely, if
byte[] bytes = s.toByteArray();
then bytes.length == (s.length()+7)/8
and
s.get(n) == ((bytes[n/8] & (1<<(n%8))) != 0)
for all n < 8 * bytes.length
.
public void flip(int bitIndex)
bitIndex
- the index of the bit to flipIndexOutOfBoundsException
- if the specified index is negativepublic void flip(int fromIndex, int toIndex)
fromIndex
(inclusive) to the specified toIndex
(exclusive) to the complement of its current
value.fromIndex
- index of the first bit to fliptoIndex
- index after the last bit to flipIndexOutOfBoundsException
- if fromIndex
is negative, or toIndex
is negative, or fromIndex
is larger than toIndex
public void set(int bitIndex)
true
.bitIndex
- a bit indexIndexOutOfBoundsException
- if the specified index is negativepublic void set(int bitIndex, boolean value)
bitIndex
- a bit indexvalue
- a boolean value to setIndexOutOfBoundsException
- if the specified index is negativepublic void set(int fromIndex, int toIndex)
fromIndex
(inclusive) to the specified toIndex
(exclusive) to true
.fromIndex
- index of the first bit to be settoIndex
- index after the last bit to be setIndexOutOfBoundsException
- if fromIndex
is negative, or toIndex
is negative, or fromIndex
is larger than toIndex
public void set(int fromIndex, int toIndex, boolean value)
fromIndex
(inclusive) to the specified toIndex
(exclusive) to the specified value.fromIndex
- index of the first bit to be settoIndex
- index after the last bit to be setvalue
- value to set the selected bits toIndexOutOfBoundsException
- if fromIndex
is negative, or toIndex
is negative, or fromIndex
is larger than toIndex
public void clear(int bitIndex)
false
.bitIndex
- the index of the bit to be clearedIndexOutOfBoundsException
- if the specified index is negativepublic void clear(int fromIndex, int toIndex)
fromIndex
(inclusive) to the specified toIndex
(exclusive) to false
.fromIndex
- index of the first bit to be clearedtoIndex
- index after the last bit to be clearedIndexOutOfBoundsException
- if fromIndex
is negative, or toIndex
is negative, or fromIndex
is larger than toIndex
public void clear()
false
.public boolean get(int bitIndex)
true
if the bit with the index bitIndex
is currently set in
this BitSet
; otherwise, the result is false
.bitIndex
- the bit indexIndexOutOfBoundsException
- if the specified index is negativepublic int nextSetBit(int fromIndex)
true
that occurs on or after the specified starting index. If no such bit exists then
-1
is returned.
To iterate over the true
bits in a BitSet
,
use the following loop:
for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i+1)) {
// operate on index i here
if (i == Integer.MAX_VALUE) {
break; // or (i+1) would overflow
}
}
fromIndex
- the index to start checking from (inclusive)-1
if there is no such bitIndexOutOfBoundsException
- if the specified index is negativepublic int nextSetBit(int fromIndex, int toIndex)
true
that occurs on or after the specified starting index. If no such bit exists then
-1
is returned.
To iterate over the true
bits in a BitSet
,
use the following loop:
for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i+1,to)) {
// operate on index i here
if (i == Integer.MAX_VALUE) {
break; // or (i+1) would overflow
}
}
fromIndex
- the index to start checking from (inclusive)toIndex
- (inclusive) returns -1 if a bit is not found before this value-1
if there is no such bitIndexOutOfBoundsException
- if the specified index is negativepublic int nextClearBit(int fromIndex)
false
that occurs on or after the specified starting index.fromIndex
- the index to start checking from (inclusive)IndexOutOfBoundsException
- if the specified index is negativepublic int previousSetBit(int fromIndex)
true
that occurs on or before the specified starting index. If no such bit exists,
or if -1
is given as the starting index, then -1
is returned.
To iterate over the true
bits in a BitSet
,
use the following loop:
for (int i = bs.length(); (i = bs.previousSetBit(i-1)) >= 0; ) {
// operate on index i here
}
fromIndex
- the index to start checking from (inclusive)-1
if there is no such bitIndexOutOfBoundsException
- if the specified index is less than -1
public int previousClearBit(int fromIndex)
false
that occurs on or before the specified starting index. If no such bit exists,
or if -1
is given as the starting index, then -1
is returned.fromIndex
- the index to start checking from (inclusive)-1
if there is no such bitIndexOutOfBoundsException
- if the specified index is less than -1
public int length()
BitSet
: the index of the highest set bit in the BitSet
plus one. Returns zero if the BitSet
contains no set bits.BitSet
public boolean isEmpty()
BitSet
contains no bits that are set to true
.BitSet
is emptypublic boolean intersects(LongValueBitSet set)
BitSet
has any bits set to true
that are also set to true
in this BitSet
.set
- BitSet
to intersect withBitSet
intersects the specified BitSet
public int cardinality()
true
in this BitSet
.true
in this BitSet
public void and(LongValueBitSet set)
true
if and only if it both initially had the value true
and the corresponding bit in the bit set argument also had the value
true
.set
- a bit setpublic void or(LongValueBitSet set)
true
if and only if it either already had the value true
or the corresponding bit in the bit set argument has the value true
.set
- a bit setpublic void xor(LongValueBitSet set)
true
if and only if one of the following statements holds:
true
, and the
corresponding bit in the argument has the value false
.
false
, and the
corresponding bit in the argument has the value true
.
set
- a bit setpublic void andNot(LongValueBitSet set)
BitSet
whose corresponding bit is set in the specified BitSet
.set
- the BitSet
with which to mask this BitSet
public int hashCode()
BitSet
.
The hash code is defined to be the result of the following calculation:
public int hashCode() {
long h = 1234;
long[] words = toLongArray();
for (int i = words.length; --i >= 0; )
h ^= words[i] * (i + 1);
return (int)((h >> 32) ^ h);
}
Note that the hash code changes if the set of bits is altered.public int size()
BitSet
to represent bit values. The maximum element in the set is the size
- 1st element.public boolean equals(Object obj)
true
if and only if the argument is not null
and is a Bitset
object that has exactly the same set of bits set to true
as this bit set. That is, for every nonnegative int
index
k
,
((BitSet)obj).get(k) == this.get(k)must be true. The current sizes of the two bit sets are not compared.
public String toString()
BitSet
contains a bit in the set state, the decimal
representation of that index is included in the result. Such indices are listed in order from lowest to highest, separated by ", " (a
comma and a space) and surrounded by braces, resulting in the usual mathematical notation for a set of integers.
Example:
BitSet drPepper = new BitSet();Now
drPepper.toString()
returns "{}
".
drPepper.set(2);Now
drPepper.toString()
returns "{2}
".
drPepper.set(4); drPepper.set(10);Now
drPepper.toString()
returns "{2, 4, 10}
".toString
in class net.openhft.chronicle.core.io.AbstractCloseable
public IntStream stream()
BitSet
contains a bit in the set state. The indices are returned in order, from lowest to
highest. The size of the stream is the number of bits in the set state, equal to the value returned by the cardinality()
method.
The bit set must remain constant during the execution of the terminal stream operation. Otherwise, the result of the terminal stream operation is undefined.
public void writeMarshallable(@NotNull @NotNull WireOut wire)
WriteMarshallable
writeMarshallable
in interface Marshallable
writeMarshallable
in interface WriteMarshallable
wire
- to write to.public void readMarshallable(@NotNull @NotNull WireIn wire) throws net.openhft.chronicle.core.io.IORuntimeException
ReadMarshallable
readMarshallable
in interface Marshallable
readMarshallable
in interface ReadMarshallable
wire
- to read from in an ordered manner.net.openhft.chronicle.core.io.IORuntimeException
- the stream wasn't ordered or formatted as expected.Copyright © 2020. All rights reserved.