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-rw-r--r--src/mscorlib/src/System/Collections/Hashtable.cs970
1 files changed, 543 insertions, 427 deletions
diff --git a/src/mscorlib/src/System/Collections/Hashtable.cs b/src/mscorlib/src/System/Collections/Hashtable.cs
index d1831dd97d..e2fd57ea4d 100644
--- a/src/mscorlib/src/System/Collections/Hashtable.cs
+++ b/src/mscorlib/src/System/Collections/Hashtable.cs
@@ -13,12 +13,13 @@
**
===========================================================*/
-namespace System.Collections {
+namespace System.Collections
+{
using System;
using System.Runtime;
using System.Runtime.Serialization;
using System.Diagnostics;
- using System.Threading;
+ using System.Threading;
using System.Runtime.CompilerServices;
using System.Runtime.ConstrainedExecution;
using System.Diagnostics.Contracts;
@@ -66,7 +67,8 @@ namespace System.Collections {
[DebuggerTypeProxy(typeof(System.Collections.Hashtable.HashtableDebugView))]
[DebuggerDisplay("Count = {Count}")]
[Serializable]
- internal class Hashtable : IDictionary, ISerializable, IDeserializationCallback, ICloneable {
+ internal class Hashtable : IDictionary, ISerializable, IDeserializationCallback, ICloneable
+ {
/*
Implementation Notes:
The generic Dictionary was copied from Hashtable's source - any bug
@@ -121,7 +123,7 @@ namespace System.Collections {
--
*/
-
+
internal const Int32 HashPrime = 101;
private const Int32 InitialSize = 3;
private const String LoadFactorName = "LoadFactor";
@@ -132,31 +134,32 @@ namespace System.Collections {
private const String KeysName = "Keys";
private const String ValuesName = "Values";
private const String KeyComparerName = "KeyComparer";
-
+
// Deleted entries have their key set to buckets
-
+
// The hash table data.
// This cannot be serialised
- private struct bucket {
+ private struct bucket
+ {
public Object key;
public Object val;
public int hash_coll; // Store hash code; sign bit means there was a collision.
}
-
+
private bucket[] buckets;
-
+
// The total number of entries in the hash table.
- private int count;
-
+ private int count;
+
// The total number of collision bits set in the hashtable
private int occupancy;
-
- private int loadsize;
- private float loadFactor;
-
+
+ private int loadsize;
+ private float loadFactor;
+
private volatile int version;
- private volatile bool isWriterInProgress;
-
+ private volatile bool isWriterInProgress;
+
private ICollection keys;
private ICollection values;
@@ -165,15 +168,16 @@ namespace System.Collections {
// Note: this constructor is a bogus constructor that does nothing
// and is for use only with SyncHashtable.
- internal Hashtable( bool trash )
+ internal Hashtable(bool trash)
{
}
// Constructs a new hashtable. The hashtable is created with an initial
// capacity of zero and a load factor of 1.0.
- public Hashtable() : this(0, 1.0f) {
+ public Hashtable() : this(0, 1.0f)
+ {
}
-
+
// Constructs a new hashtable with the given initial capacity and a load
// factor of 1.0. The capacity argument serves as an indication of
// the number of entries the hashtable will contain. When this number (or
@@ -181,9 +185,10 @@ namespace System.Collections {
// eliminate a number of resizing operations that would otherwise be
// performed when elements are added to the hashtable.
//
- public Hashtable(int capacity) : this(capacity, 1.0f) {
+ public Hashtable(int capacity) : this(capacity, 1.0f)
+ {
}
-
+
// Constructs a new hashtable with the given initial capacity and load
// factor. The capacity argument serves as an indication of the
// number of entries the hashtable will contain. When this number (or an
@@ -195,19 +200,20 @@ namespace System.Collections {
// increased memory consumption. A load factor of 1.0 generally provides
// the best balance between speed and size.
//
- public Hashtable(int capacity, float loadFactor) {
+ public Hashtable(int capacity, float loadFactor)
+ {
if (capacity < 0)
- throw new ArgumentOutOfRangeException(nameof(capacity), Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
+ throw new ArgumentOutOfRangeException(nameof(capacity), SR.ArgumentOutOfRange_NeedNonNegNum);
if (!(loadFactor >= 0.1f && loadFactor <= 1.0f))
- throw new ArgumentOutOfRangeException(nameof(loadFactor), Environment.GetResourceString("ArgumentOutOfRange_HashtableLoadFactor", .1, 1.0));
+ throw new ArgumentOutOfRangeException(nameof(loadFactor), SR.Format(SR.ArgumentOutOfRange_HashtableLoadFactor, .1, 1.0));
Contract.EndContractBlock();
-
+
// Based on perf work, .72 is the optimal load factor for this table.
this.loadFactor = 0.72f * loadFactor;
double rawsize = capacity / this.loadFactor;
if (rawsize > Int32.MaxValue)
- throw new ArgumentException(Environment.GetResourceString("Arg_HTCapacityOverflow"));
+ throw new ArgumentException(SR.Arg_HTCapacityOverflow);
// Avoid awfully small sizes
int hashsize = (rawsize > InitialSize) ? HashHelpers.GetPrime((int)rawsize) : InitialSize;
@@ -216,18 +222,21 @@ namespace System.Collections {
loadsize = (int)(this.loadFactor * hashsize);
isWriterInProgress = false;
// Based on the current algorithm, loadsize must be less than hashsize.
- Debug.Assert( loadsize < hashsize, "Invalid hashtable loadsize!");
+ Debug.Assert(loadsize < hashsize, "Invalid hashtable loadsize!");
}
-
- public Hashtable(int capacity, float loadFactor, IEqualityComparer equalityComparer) : this(capacity, loadFactor) {
- this._keycomparer = equalityComparer;
+
+ public Hashtable(int capacity, float loadFactor, IEqualityComparer equalityComparer) : this(capacity, loadFactor)
+ {
+ _keycomparer = equalityComparer;
}
- public Hashtable(IEqualityComparer equalityComparer) : this(0, 1.0f, equalityComparer) {
+ public Hashtable(IEqualityComparer equalityComparer) : this(0, 1.0f, equalityComparer)
+ {
}
-
- public Hashtable(int capacity, IEqualityComparer equalityComparer)
- : this(capacity, 1.0f, equalityComparer) {
+
+ public Hashtable(int capacity, IEqualityComparer equalityComparer)
+ : this(capacity, 1.0f, equalityComparer)
+ {
}
// InitHash is basically an implementation of classic DoubleHashing (see http://en.wikipedia.org/wiki/Double_hashing)
@@ -250,11 +259,12 @@ namespace System.Collections {
// The out parameter seed is h1(key), while the out parameter
// incr is h2(key, hashSize). Callers of this function should
// add incr each time through a loop.
- private uint InitHash(Object key, int hashsize, out uint seed, out uint incr) {
+ private uint InitHash(Object key, int hashsize, out uint seed, out uint incr)
+ {
// Hashcode must be positive. Also, we must not use the sign bit, since
// that is used for the collision bit.
- uint hashcode = (uint) GetHash(key) & 0x7FFFFFFF;
- seed = (uint) hashcode;
+ uint hashcode = (uint)GetHash(key) & 0x7FFFFFFF;
+ seed = (uint)hashcode;
// Restriction: incr MUST be between 1 and hashsize - 1, inclusive for
// the modular arithmetic to work correctly. This guarantees you'll
// visit every bucket in the table exactly once within hashsize
@@ -268,64 +278,72 @@ namespace System.Collections {
// ArgumentException is thrown if the key is null or if the key is already
// present in the hashtable.
//
- public virtual void Add(Object key, Object value) {
+ public virtual void Add(Object key, Object value)
+ {
Insert(key, value, true);
}
// Removes all entries from this hashtable.
- public virtual void Clear() {
+ public virtual void Clear()
+ {
Debug.Assert(!isWriterInProgress, "Race condition detected in usages of Hashtable - multiple threads appear to be writing to a Hashtable instance simultaneously! Don't do that - use Hashtable.Synchronized.");
if (count == 0 && occupancy == 0)
return;
isWriterInProgress = true;
- for (int i = 0; i < buckets.Length; i++){
+ for (int i = 0; i < buckets.Length; i++)
+ {
buckets[i].hash_coll = 0;
buckets[i].key = null;
buckets[i].val = null;
}
-
+
count = 0;
occupancy = 0;
- UpdateVersion();
- isWriterInProgress = false;
+ UpdateVersion();
+ isWriterInProgress = false;
}
-
+
// Clone returns a virtually identical copy of this hash table. This does
// a shallow copy - the Objects in the table aren't cloned, only the references
// to those Objects.
public virtual Object Clone()
- {
+ {
bucket[] lbuckets = buckets;
- Hashtable ht = new Hashtable(count,_keycomparer);
+ Hashtable ht = new Hashtable(count, _keycomparer);
ht.version = version;
ht.loadFactor = loadFactor;
ht.count = 0;
int bucket = lbuckets.Length;
- while (bucket > 0) {
+ while (bucket > 0)
+ {
bucket--;
Object keyv = lbuckets[bucket].key;
- if ((keyv!= null) && (keyv != lbuckets)) {
+ if ((keyv != null) && (keyv != lbuckets))
+ {
ht[keyv] = lbuckets[bucket].val;
}
}
return ht;
}
-
+
// Checks if this hashtable contains the given key.
- public virtual bool Contains(Object key) {
+ public virtual bool Contains(Object key)
+ {
return ContainsKey(key);
}
-
+
// Checks if this hashtable contains an entry with the given key. This is
// an O(1) operation.
//
- public virtual bool ContainsKey(Object key) {
- if (key == null) {
- throw new ArgumentNullException(nameof(key), Environment.GetResourceString("ArgumentNull_Key"));
+ public virtual bool ContainsKey(Object key)
+ {
+ if (key == null)
+ {
+ throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
Contract.EndContractBlock();
@@ -334,68 +352,76 @@ namespace System.Collections {
// Take a snapshot of buckets, in case another thread resizes table
bucket[] lbuckets = buckets;
uint hashcode = InitHash(key, lbuckets.Length, out seed, out incr);
- int ntry = 0;
-
+ int ntry = 0;
+
bucket b;
- int bucketNumber = (int) (seed % (uint)lbuckets.Length);
- do {
+ int bucketNumber = (int)(seed % (uint)lbuckets.Length);
+ do
+ {
b = lbuckets[bucketNumber];
- if (b.key == null) {
+ if (b.key == null)
+ {
return false;
}
- if (((b.hash_coll & 0x7FFFFFFF) == hashcode) &&
- KeyEquals (b.key, key))
+ if (((b.hash_coll & 0x7FFFFFFF) == hashcode) &&
+ KeyEquals(b.key, key))
return true;
- bucketNumber = (int) (((long)bucketNumber + incr)% (uint)lbuckets.Length);
+ bucketNumber = (int)(((long)bucketNumber + incr) % (uint)lbuckets.Length);
} while (b.hash_coll < 0 && ++ntry < lbuckets.Length);
return false;
}
-
+
// Copies the keys of this hashtable to a given array starting at a given
// index. This method is used by the implementation of the CopyTo method in
// the KeyCollection class.
- private void CopyKeys(Array array, int arrayIndex) {
+ private void CopyKeys(Array array, int arrayIndex)
+ {
Contract.Requires(array != null);
Contract.Requires(array.Rank == 1);
bucket[] lbuckets = buckets;
- for (int i = lbuckets.Length; --i >= 0;) {
+ for (int i = lbuckets.Length; --i >= 0;)
+ {
Object keyv = lbuckets[i].key;
- if ((keyv != null) && (keyv != buckets)){
+ if ((keyv != null) && (keyv != buckets))
+ {
array.SetValue(keyv, arrayIndex++);
}
- }
+ }
}
// Copies the keys of this hashtable to a given array starting at a given
// index. This method is used by the implementation of the CopyTo method in
// the KeyCollection class.
- private void CopyEntries(Array array, int arrayIndex) {
+ private void CopyEntries(Array array, int arrayIndex)
+ {
Contract.Requires(array != null);
Contract.Requires(array.Rank == 1);
bucket[] lbuckets = buckets;
- for (int i = lbuckets.Length; --i >= 0;) {
+ for (int i = lbuckets.Length; --i >= 0;)
+ {
Object keyv = lbuckets[i].key;
- if ((keyv != null) && (keyv != buckets)){
- DictionaryEntry entry = new DictionaryEntry(keyv,lbuckets[i].val);
+ if ((keyv != null) && (keyv != buckets))
+ {
+ DictionaryEntry entry = new DictionaryEntry(keyv, lbuckets[i].val);
array.SetValue(entry, arrayIndex++);
}
}
}
-
+
// Copies the values in this hash table to an array at
// a given index. Note that this only copies values, and not keys.
public virtual void CopyTo(Array array, int arrayIndex)
{
if (array == null)
- throw new ArgumentNullException(nameof(array), Environment.GetResourceString("ArgumentNull_Array"));
+ throw new ArgumentNullException(nameof(array), SR.ArgumentNull_Array);
if (array.Rank != 1)
- throw new ArgumentException(Environment.GetResourceString("Arg_RankMultiDimNotSupported"));
- if (arrayIndex < 0)
- throw new ArgumentOutOfRangeException(nameof(arrayIndex), Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
+ throw new ArgumentException(SR.Arg_RankMultiDimNotSupported);
+ if (arrayIndex < 0)
+ throw new ArgumentOutOfRangeException(nameof(arrayIndex), SR.ArgumentOutOfRange_NeedNonNegNum);
if (array.Length - arrayIndex < Count)
- throw new ArgumentException(Environment.GetResourceString("Arg_ArrayPlusOffTooSmall"));
+ throw new ArgumentException(SR.Arg_ArrayPlusOffTooSmall);
Contract.EndContractBlock();
CopyEntries(array, arrayIndex);
}
@@ -404,40 +430,46 @@ namespace System.Collections {
// Copies the values of this hashtable to a given array starting at a given
// index. This method is used by the implementation of the CopyTo method in
// the ValueCollection class.
- private void CopyValues(Array array, int arrayIndex) {
+ private void CopyValues(Array array, int arrayIndex)
+ {
Contract.Requires(array != null);
Contract.Requires(array.Rank == 1);
bucket[] lbuckets = buckets;
- for (int i = lbuckets.Length; --i >= 0;) {
+ for (int i = lbuckets.Length; --i >= 0;)
+ {
Object keyv = lbuckets[i].key;
- if ((keyv != null) && (keyv != buckets)){
+ if ((keyv != null) && (keyv != buckets))
+ {
array.SetValue(lbuckets[i].val, arrayIndex++);
}
}
}
-
+
// Returns the value associated with the given key. If an entry with the
// given key is not found, the returned value is null.
//
- public virtual Object this[Object key] {
- get {
- if (key == null) {
- throw new ArgumentNullException(nameof(key), Environment.GetResourceString("ArgumentNull_Key"));
+ public virtual Object this[Object key]
+ {
+ get
+ {
+ if (key == null)
+ {
+ throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
Contract.EndContractBlock();
uint seed;
uint incr;
-
+
// Take a snapshot of buckets, in case another thread does a resize
bucket[] lbuckets = buckets;
uint hashcode = InitHash(key, lbuckets.Length, out seed, out incr);
- int ntry = 0;
-
+ int ntry = 0;
+
bucket b;
- int bucketNumber = (int) (seed % (uint)lbuckets.Length);
+ int bucketNumber = (int)(seed % (uint)lbuckets.Length);
do
{
int currentversion;
@@ -459,35 +491,39 @@ namespace System.Collections {
// we will see the 'isWriterProgress' flag to be true or 'version' is changed in the reader.
//
int spinCount = 0;
- do {
+ do
+ {
// this is violate read, following memory accesses can not be moved ahead of it.
currentversion = version;
- b = lbuckets[bucketNumber];
+ b = lbuckets[bucketNumber];
// The contention between reader and writer shouldn't happen frequently.
// But just in case this will burn CPU, yield the control of CPU if we spinned a few times.
// 8 is just a random number I pick.
- if( (++spinCount) % 8 == 0 ) {
+ if ((++spinCount) % 8 == 0)
+ {
Thread.Sleep(1); // 1 means we are yeilding control to all threads, including low-priority ones.
}
- } while ( isWriterInProgress || (currentversion != version) );
+ } while (isWriterInProgress || (currentversion != version));
- if (b.key == null) {
+ if (b.key == null)
+ {
return null;
}
- if (((b.hash_coll & 0x7FFFFFFF) == hashcode) &&
- KeyEquals (b.key, key))
+ if (((b.hash_coll & 0x7FFFFFFF) == hashcode) &&
+ KeyEquals(b.key, key))
return b.val;
- bucketNumber = (int) (((long)bucketNumber + incr)% (uint)lbuckets.Length);
+ bucketNumber = (int)(((long)bucketNumber + incr) % (uint)lbuckets.Length);
} while (b.hash_coll < 0 && ++ntry < lbuckets.Length);
return null;
}
- set {
+ set
+ {
Insert(key, value, false);
}
}
-
+
// Increases the bucket count of this hashtable. This method is called from
// the Insert method when the actual load factor of the hashtable reaches
// the upper limit specified when the hashtable was constructed. The number
@@ -495,27 +531,30 @@ namespace System.Collections {
// that is larger than twice the current number of buckets, and the entries
// in the hashtable are redistributed into the new buckets using the cached
// hashcodes.
- private void expand() {
+ private void expand()
+ {
int rawsize = HashHelpers.ExpandPrime(buckets.Length);
rehash(rawsize, false);
}
// We occationally need to rehash the table to clean up the collision bits.
- private void rehash() {
- rehash( buckets.Length, false );
+ private void rehash()
+ {
+ rehash(buckets.Length, false);
}
- private void UpdateVersion() {
+ private void UpdateVersion()
+ {
// Version might become negative when version is Int32.MaxValue, but the oddity will be still be correct.
// So we don't need to special case this.
version++;
}
- private void rehash( int newsize, bool forceNewHashCode ) {
-
+ private void rehash(int newsize, bool forceNewHashCode)
+ {
// reset occupancy
- occupancy=0;
-
+ occupancy = 0;
+
// Don't replace any internal state until we've finished adding to the
// new bucket[]. This serves two purposes:
// 1) Allow concurrent readers to see valid hashtable contents
@@ -523,12 +562,14 @@ namespace System.Collections {
// 2) Protect against an OutOfMemoryException while allocating this
// new bucket[].
bucket[] newBuckets = new bucket[newsize];
-
+
// rehash table into new buckets
int nb;
- for (nb = 0; nb < buckets.Length; nb++){
+ for (nb = 0; nb < buckets.Length; nb++)
+ {
bucket oldb = buckets[nb];
- if ((oldb.key != null) && (oldb.key != buckets)) {
+ if ((oldb.key != null) && (oldb.key != buckets))
+ {
int hashcode = ((forceNewHashCode ? GetHash(oldb.key) : oldb.hash_coll) & 0x7FFFFFFF);
putEntry(newBuckets, oldb.key, oldb.val, hashcode);
}
@@ -551,7 +592,8 @@ namespace System.Collections {
// in progress, the MoveNext and Current methods of the
// enumerator will throw an exception.
//
- IEnumerator IEnumerable.GetEnumerator() {
+ IEnumerator IEnumerable.GetEnumerator()
+ {
return new HashtableEnumerator(this, HashtableEnumerator.DictEntry);
}
@@ -560,10 +602,11 @@ namespace System.Collections {
// in progress, the MoveNext and Current methods of the
// enumerator will throw an exception.
//
- public virtual IDictionaryEnumerator GetEnumerator() {
+ public virtual IDictionaryEnumerator GetEnumerator()
+ {
return new HashtableEnumerator(this, HashtableEnumerator.DictEntry);
}
-
+
// Internal method to get the hash code for an Object. This will call
// GetHashCode() on each object if you haven't provided an IHashCodeProvider
// instance. Otherwise, it calls hcp.GetHashCode(obj).
@@ -575,16 +618,19 @@ namespace System.Collections {
}
// Is this Hashtable read-only?
- public virtual bool IsReadOnly {
+ public virtual bool IsReadOnly
+ {
get { return false; }
}
- public virtual bool IsFixedSize {
+ public virtual bool IsFixedSize
+ {
get { return false; }
}
// Is this Hashtable synchronized? See SyncRoot property
- public virtual bool IsSynchronized {
+ public virtual bool IsSynchronized
+ {
get { return false; }
}
@@ -595,11 +641,12 @@ namespace System.Collections {
protected virtual bool KeyEquals(Object item, Object key)
{
Debug.Assert(key != null, "key can't be null here!");
- if( Object.ReferenceEquals(buckets, item)) {
+ if (Object.ReferenceEquals(buckets, item))
+ {
return false;
}
- if (Object.ReferenceEquals(item,key))
+ if (Object.ReferenceEquals(item, key))
return true;
if (_keycomparer != null)
@@ -616,13 +663,15 @@ namespace System.Collections {
// to the hash table are reflected in this collection. It is not
// a static copy of all the keys in the hash table.
//
- public virtual ICollection Keys {
- get {
+ public virtual ICollection Keys
+ {
+ get
+ {
if (keys == null) keys = new KeyCollection(this);
- return keys;
+ return keys;
}
}
-
+
// Returns a collection representing the values of this hashtable. The
// order in which the returned collection represents the values is
// unspecified, but it is guaranteed to be the same order in which a
@@ -633,39 +682,45 @@ namespace System.Collections {
// to the hash table are reflected in this collection. It is not
// a static copy of all the keys in the hash table.
//
- public virtual ICollection Values {
- get {
+ public virtual ICollection Values
+ {
+ get
+ {
if (values == null) values = new ValueCollection(this);
- return values;
+ return values;
}
}
-
+
// Inserts an entry into this hashtable. This method is called from the Set
// and Add methods. If the add parameter is true and the given key already
// exists in the hashtable, an exception is thrown.
- private void Insert (Object key, Object nvalue, bool add) {
- if (key == null) {
- throw new ArgumentNullException(nameof(key), Environment.GetResourceString("ArgumentNull_Key"));
+ private void Insert(Object key, Object nvalue, bool add)
+ {
+ if (key == null)
+ {
+ throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
Contract.EndContractBlock();
- if (count >= loadsize) {
+ if (count >= loadsize)
+ {
expand();
}
- else if(occupancy > loadsize && count > 100) {
+ else if (occupancy > loadsize && count > 100)
+ {
rehash();
}
-
+
uint seed;
uint incr;
// Assume we only have one thread writing concurrently. Modify
// buckets to contain new data, as long as we insert in the right order.
uint hashcode = InitHash(key, buckets.Length, out seed, out incr);
- int ntry = 0;
+ int ntry = 0;
int emptySlotNumber = -1; // We use the empty slot number to cache the first empty slot. We chose to reuse slots
// create by remove that have the collision bit set over using up new slots.
- int bucketNumber = (int) (seed % (uint)buckets.Length);
- do {
-
+ int bucketNumber = (int)(seed % (uint)buckets.Length);
+ do
+ {
// Set emptySlot number to current bucket if it is the first available bucket that we have seen
// that once contained an entry and also has had a collision.
// We need to search this entire collision chain because we have to ensure that there are no
@@ -676,9 +731,9 @@ namespace System.Collections {
// Insert the key/value pair into this bucket if this bucket is empty and has never contained an entry
// OR
// This bucket once contained an entry but there has never been a collision
- if ((buckets[bucketNumber].key == null) ||
- (buckets[bucketNumber].key == buckets && ((buckets[bucketNumber].hash_coll & unchecked(0x80000000))==0))) {
-
+ if ((buckets[bucketNumber].key == null) ||
+ (buckets[bucketNumber].key == buckets && ((buckets[bucketNumber].hash_coll & unchecked(0x80000000)) == 0)))
+ {
// If we have found an available bucket that has never had a collision, but we've seen an available
// bucket in the past that has the collision bit set, use the previous bucket instead
if (emptySlotNumber != -1) // Reuse slot
@@ -688,11 +743,11 @@ namespace System.Collections {
// code until the value & key are set appropriately.
isWriterInProgress = true;
buckets[bucketNumber].val = nvalue;
- buckets[bucketNumber].key = key;
- buckets[bucketNumber].hash_coll |= (int) hashcode;
+ buckets[bucketNumber].key = key;
+ buckets[bucketNumber].hash_coll |= (int)hashcode;
count++;
UpdateVersion();
- isWriterInProgress = false;
+ isWriterInProgress = false;
return;
}
@@ -700,29 +755,33 @@ namespace System.Collections {
// The current bucket is in use
// OR
// it is available, but has had the collision bit set and we have already found an available bucket
- if (((buckets[bucketNumber].hash_coll & 0x7FFFFFFF) == hashcode) &&
- KeyEquals (buckets[bucketNumber].key, key)) {
- if (add) {
- throw new ArgumentException(Environment.GetResourceString("Argument_AddingDuplicate__", buckets[bucketNumber].key, key));
+ if (((buckets[bucketNumber].hash_coll & 0x7FFFFFFF) == hashcode) &&
+ KeyEquals(buckets[bucketNumber].key, key))
+ {
+ if (add)
+ {
+ throw new ArgumentException(SR.Format(SR.Argument_AddingDuplicate__, buckets[bucketNumber].key, key));
}
isWriterInProgress = true;
buckets[bucketNumber].val = nvalue;
UpdateVersion();
- isWriterInProgress = false;
+ isWriterInProgress = false;
return;
}
// The current bucket is full, and we have therefore collided. We need to set the collision bit
// UNLESS
// we have remembered an available slot previously.
- if (emptySlotNumber == -1) {// We don't need to set the collision bit here since we already have an empty slot
- if( buckets[bucketNumber].hash_coll >= 0 ) {
+ if (emptySlotNumber == -1)
+ {// We don't need to set the collision bit here since we already have an empty slot
+ if (buckets[bucketNumber].hash_coll >= 0)
+ {
buckets[bucketNumber].hash_coll |= unchecked((int)0x80000000);
occupancy++;
}
}
- bucketNumber = (int) (((long)bucketNumber + incr)% (uint)buckets.Length);
+ bucketNumber = (int)(((long)bucketNumber + incr) % (uint)buckets.Length);
} while (++ntry < buckets.Length);
// This code is here if and only if there were no buckets without a collision bit set in the entire table
@@ -732,11 +791,11 @@ namespace System.Collections {
// code until the value & key are set appropriately.
isWriterInProgress = true;
buckets[emptySlotNumber].val = nvalue;
- buckets[emptySlotNumber].key = key;
- buckets[emptySlotNumber].hash_coll |= (int) hashcode;
+ buckets[emptySlotNumber].key = key;
+ buckets[emptySlotNumber].hash_coll |= (int)hashcode;
count++;
- UpdateVersion();
- isWriterInProgress = false;
+ UpdateVersion();
+ isWriterInProgress = false;
return;
}
@@ -745,40 +804,44 @@ namespace System.Collections {
// Then verify that our double hash function (h2, described at top of file)
// meets the requirements described above. You should never see this assert.
Debug.Assert(false, "hash table insert failed! Load factor too high, or our double hashing function is incorrect.");
- throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_HashInsertFailed"));
+ throw new InvalidOperationException(SR.InvalidOperation_HashInsertFailed);
}
-
- private void putEntry (bucket[] newBuckets, Object key, Object nvalue, int hashcode)
+
+ private void putEntry(bucket[] newBuckets, Object key, Object nvalue, int hashcode)
{
Debug.Assert(hashcode >= 0, "hashcode >= 0"); // make sure collision bit (sign bit) wasn't set.
- uint seed = (uint) hashcode;
+ uint seed = (uint)hashcode;
uint incr = (uint)(1 + ((seed * HashPrime) % ((uint)newBuckets.Length - 1)));
- int bucketNumber = (int) (seed % (uint)newBuckets.Length);
- do {
-
- if ((newBuckets[bucketNumber].key == null) || (newBuckets[bucketNumber].key == buckets)) {
+ int bucketNumber = (int)(seed % (uint)newBuckets.Length);
+ do
+ {
+ if ((newBuckets[bucketNumber].key == null) || (newBuckets[bucketNumber].key == buckets))
+ {
newBuckets[bucketNumber].val = nvalue;
newBuckets[bucketNumber].key = key;
newBuckets[bucketNumber].hash_coll |= hashcode;
return;
}
-
- if( newBuckets[bucketNumber].hash_coll >= 0 ) {
- newBuckets[bucketNumber].hash_coll |= unchecked((int)0x80000000);
+
+ if (newBuckets[bucketNumber].hash_coll >= 0)
+ {
+ newBuckets[bucketNumber].hash_coll |= unchecked((int)0x80000000);
occupancy++;
}
- bucketNumber = (int) (((long)bucketNumber + incr)% (uint)newBuckets.Length);
+ bucketNumber = (int)(((long)bucketNumber + incr) % (uint)newBuckets.Length);
} while (true);
}
-
+
// Removes an entry from this hashtable. If an entry with the specified
// key exists in the hashtable, it is removed. An ArgumentException is
// thrown if the key is null.
//
- public virtual void Remove(Object key) {
- if (key == null) {
- throw new ArgumentNullException(nameof(key), Environment.GetResourceString("ArgumentNull_Key"));
+ public virtual void Remove(Object key)
+ {
+ if (key == null)
+ {
+ throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
Contract.EndContractBlock();
Debug.Assert(!isWriterInProgress, "Race condition detected in usages of Hashtable - multiple threads appear to be writing to a Hashtable instance simultaneously! Don't do that - use Hashtable.Synchronized.");
@@ -788,124 +851,135 @@ namespace System.Collections {
// Assuming only one concurrent writer, write directly into buckets.
uint hashcode = InitHash(key, buckets.Length, out seed, out incr);
int ntry = 0;
-
+
bucket b;
- int bn = (int) (seed % (uint)buckets.Length); // bucketNumber
- do {
+ int bn = (int)(seed % (uint)buckets.Length); // bucketNumber
+ do
+ {
b = buckets[bn];
- if (((b.hash_coll & 0x7FFFFFFF) == hashcode) &&
- KeyEquals (b.key, key)) {
+ if (((b.hash_coll & 0x7FFFFFFF) == hashcode) &&
+ KeyEquals(b.key, key))
+ {
isWriterInProgress = true;
// Clear hash_coll field, then key, then value
buckets[bn].hash_coll &= unchecked((int)0x80000000);
- if (buckets[bn].hash_coll != 0) {
+ if (buckets[bn].hash_coll != 0)
+ {
buckets[bn].key = buckets;
- }
- else {
+ }
+ else
+ {
buckets[bn].key = null;
}
buckets[bn].val = null; // Free object references sooner & simplify ContainsValue.
count--;
UpdateVersion();
- isWriterInProgress = false;
+ isWriterInProgress = false;
return;
}
- bn = (int) (((long)bn + incr)% (uint)buckets.Length);
+ bn = (int)(((long)bn + incr) % (uint)buckets.Length);
} while (b.hash_coll < 0 && ++ntry < buckets.Length);
- //throw new ArgumentException(Environment.GetResourceString("Arg_RemoveArgNotFound"));
+ //throw new ArgumentException(SR.Arg_RemoveArgNotFound);
}
-
+
// Returns the object to synchronize on for this hash table.
- public virtual Object SyncRoot {
- get {
- if( _syncRoot == null) {
- System.Threading.Interlocked.CompareExchange<Object>(ref _syncRoot, new Object(), null);
+ public virtual Object SyncRoot
+ {
+ get
+ {
+ if (_syncRoot == null)
+ {
+ System.Threading.Interlocked.CompareExchange<Object>(ref _syncRoot, new Object(), null);
}
- return _syncRoot;
+ return _syncRoot;
}
}
-
+
// Returns the number of associations in this hashtable.
//
- public virtual int Count {
+ public virtual int Count
+ {
get { return count; }
}
-
+
// Returns a thread-safe wrapper for a Hashtable.
//
- public static Hashtable Synchronized(Hashtable table) {
- if (table==null)
+ public static Hashtable Synchronized(Hashtable table)
+ {
+ if (table == null)
throw new ArgumentNullException(nameof(table));
Contract.EndContractBlock();
return new SyncHashtable(table);
}
-
+
//
// The ISerializable Implementation
//
- public virtual void GetObjectData(SerializationInfo info, StreamingContext context) {
- if (info==null) {
+ public virtual void GetObjectData(SerializationInfo info, StreamingContext context)
+ {
+ if (info == null)
+ {
throw new ArgumentNullException(nameof(info));
}
Contract.EndContractBlock();
// This is imperfect - it only works well if all other writes are
// also using our synchronized wrapper. But it's still a good idea.
- lock (SyncRoot) {
+ lock (SyncRoot)
+ {
// This method hasn't been fully tweaked to be safe for a concurrent writer.
int oldVersion = version;
- info.AddValue(LoadFactorName, loadFactor);
- info.AddValue(VersionName, version);
-
- //
- // We need to maintain serialization compatibility with Everett and RTM.
- // If the comparer is null or a compatible comparer, serialize Hashtable
- // in a format that can be deserialized on Everett and RTM.
- //
- // Also, if the Hashtable is using randomized hashing, serialize the old
- // view of the _keycomparer so perevious frameworks don't see the new types
+ info.AddValue(LoadFactorName, loadFactor);
+ info.AddValue(VersionName, version);
+
+ //
+ // We need to maintain serialization compatibility with Everett and RTM.
+ // If the comparer is null or a compatible comparer, serialize Hashtable
+ // in a format that can be deserialized on Everett and RTM.
+ //
#pragma warning disable 618
-#if FEATURE_RANDOMIZED_STRING_HASHING
- IEqualityComparer keyComparerForSerilization = (IEqualityComparer) HashHelpers.GetEqualityComparerForSerialization(_keycomparer);
-#else
- IEqualityComparer keyComparerForSerilization = _keycomparer;
-#endif
+ IEqualityComparer keyComparerForSerilization = _keycomparer;
- if( keyComparerForSerilization == null) {
- info.AddValue(ComparerName, null,typeof(IComparer));
- info.AddValue(HashCodeProviderName, null, typeof(IHashCodeProvider));
- }
- else if(keyComparerForSerilization is CompatibleComparer) {
- CompatibleComparer c = keyComparerForSerilization as CompatibleComparer;
- info.AddValue(ComparerName, c.Comparer, typeof(IComparer));
- info.AddValue(HashCodeProviderName, c.HashCodeProvider, typeof(IHashCodeProvider));
- }
- else {
- info.AddValue(KeyComparerName, keyComparerForSerilization, typeof(IEqualityComparer));
- }
+ if (keyComparerForSerilization == null)
+ {
+ info.AddValue(ComparerName, null, typeof(IComparer));
+ info.AddValue(HashCodeProviderName, null, typeof(IHashCodeProvider));
+ }
+ else if (keyComparerForSerilization is CompatibleComparer)
+ {
+ CompatibleComparer c = keyComparerForSerilization as CompatibleComparer;
+ info.AddValue(ComparerName, c.Comparer, typeof(IComparer));
+ info.AddValue(HashCodeProviderName, c.HashCodeProvider, typeof(IHashCodeProvider));
+ }
+ else
+ {
+ info.AddValue(KeyComparerName, keyComparerForSerilization, typeof(IEqualityComparer));
+ }
#pragma warning restore 618
- info.AddValue(HashSizeName, buckets.Length); //This is the length of the bucket array.
- Object [] serKeys = new Object[count];
- Object [] serValues = new Object[count];
- CopyKeys(serKeys, 0);
- CopyValues(serValues,0);
- info.AddValue(KeysName, serKeys, typeof(Object[]));
- info.AddValue(ValuesName, serValues, typeof(Object[]));
+ info.AddValue(HashSizeName, buckets.Length); //This is the length of the bucket array.
+ Object[] serKeys = new Object[count];
+ Object[] serValues = new Object[count];
+ CopyKeys(serKeys, 0);
+ CopyValues(serValues, 0);
+ info.AddValue(KeysName, serKeys, typeof(Object[]));
+ info.AddValue(ValuesName, serValues, typeof(Object[]));
// Explicitly check to see if anyone changed the Hashtable while we
// were serializing it. That's a race condition in their code.
if (version != oldVersion)
- throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumFailedVersion));
- }
+ throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumFailedVersion));
+ }
}
-
+
//
// DeserializationEvent Listener
//
- public virtual void OnDeserialization(Object sender) {
- if (buckets!=null) {
+ public virtual void OnDeserialization(Object sender)
+ {
+ if (buckets != null)
+ {
// Somebody had a dependency on this hashtable and fixed us up before the ObjectManager got to it.
return;
}
@@ -913,8 +987,9 @@ namespace System.Collections {
SerializationInfo siInfo;
HashHelpers.SerializationInfoTable.TryGetValue(this, out siInfo);
- if (siInfo==null) {
- throw new SerializationException(Environment.GetResourceString("Serialization_InvalidOnDeser"));
+ if (siInfo == null)
+ {
+ throw new SerializationException(SR.Serialization_InvalidOnDeser);
}
int hashsize = 0;
@@ -924,14 +999,14 @@ namespace System.Collections {
IHashCodeProvider hcp = null;
#pragma warning restore 618
- Object [] serKeys = null;
- Object [] serValues = null;
+ Object[] serKeys = null;
+ Object[] serValues = null;
SerializationInfoEnumerator enumerator = siInfo.GetEnumerator();
- while( enumerator.MoveNext())
+ while (enumerator.MoveNext())
{
- switch( enumerator.Name)
+ switch (enumerator.Name)
{
case LoadFactorName:
loadFactor = siInfo.GetSingle(LoadFactorName);
@@ -939,7 +1014,7 @@ namespace System.Collections {
case HashSizeName:
hashsize = siInfo.GetInt32(HashSizeName);
break;
- case KeyComparerName:
+ case KeyComparerName:
_keycomparer = (IEqualityComparer)siInfo.GetValue(KeyComparerName, typeof(IEqualityComparer));
break;
case ComparerName:
@@ -959,129 +1034,148 @@ namespace System.Collections {
}
}
- loadsize = (int)(loadFactor*hashsize);
+ loadsize = (int)(loadFactor * hashsize);
// V1 object doesn't has _keycomparer field.
- if ( (_keycomparer == null) && ( (c != null) || (hcp != null) ) ){
- _keycomparer = new CompatibleComparer(c,hcp);
+ if ((_keycomparer == null) && ((c != null) || (hcp != null)))
+ {
+ _keycomparer = new CompatibleComparer(c, hcp);
}
buckets = new bucket[hashsize];
-
- if (serKeys==null) {
- throw new SerializationException(Environment.GetResourceString("Serialization_MissingKeys"));
+
+ if (serKeys == null)
+ {
+ throw new SerializationException(SR.Serialization_MissingKeys);
}
- if (serValues==null) {
- throw new SerializationException(Environment.GetResourceString("Serialization_MissingValues"));
+ if (serValues == null)
+ {
+ throw new SerializationException(SR.Serialization_MissingValues);
}
- if (serKeys.Length!=serValues.Length) {
- throw new SerializationException(Environment.GetResourceString("Serialization_KeyValueDifferentSizes"));
+ if (serKeys.Length != serValues.Length)
+ {
+ throw new SerializationException(SR.Serialization_KeyValueDifferentSizes);
}
- for (int i=0; i<serKeys.Length; i++) {
- if (serKeys[i]==null) {
- throw new SerializationException(Environment.GetResourceString("Serialization_NullKey"));
+ for (int i = 0; i < serKeys.Length; i++)
+ {
+ if (serKeys[i] == null)
+ {
+ throw new SerializationException(SR.Serialization_NullKey);
}
Insert(serKeys[i], serValues[i], true);
}
-
+
version = siInfo.GetInt32(VersionName);
-
+
HashHelpers.SerializationInfoTable.Remove(this);
}
-
-
+
+
// Implements a Collection for the keys of a hashtable. An instance of this
// class is created by the GetKeys method of a hashtable.
[Serializable]
private class KeyCollection : ICollection
{
private Hashtable _hashtable;
-
- internal KeyCollection(Hashtable hashtable) {
+
+ internal KeyCollection(Hashtable hashtable)
+ {
_hashtable = hashtable;
}
-
- public virtual void CopyTo(Array array, int arrayIndex) {
- if (array==null)
+
+ public virtual void CopyTo(Array array, int arrayIndex)
+ {
+ if (array == null)
throw new ArgumentNullException(nameof(array));
if (array.Rank != 1)
- throw new ArgumentException(Environment.GetResourceString("Arg_RankMultiDimNotSupported"));
- if (arrayIndex < 0)
- throw new ArgumentOutOfRangeException(nameof(arrayIndex), Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
+ throw new ArgumentException(SR.Arg_RankMultiDimNotSupported);
+ if (arrayIndex < 0)
+ throw new ArgumentOutOfRangeException(nameof(arrayIndex), SR.ArgumentOutOfRange_NeedNonNegNum);
Contract.EndContractBlock();
if (array.Length - arrayIndex < _hashtable.count)
- throw new ArgumentException(Environment.GetResourceString("Arg_ArrayPlusOffTooSmall"));
+ throw new ArgumentException(SR.Arg_ArrayPlusOffTooSmall);
_hashtable.CopyKeys(array, arrayIndex);
}
-
- public virtual IEnumerator GetEnumerator() {
+
+ public virtual IEnumerator GetEnumerator()
+ {
return new HashtableEnumerator(_hashtable, HashtableEnumerator.Keys);
}
-
- public virtual bool IsSynchronized {
+
+ public virtual bool IsSynchronized
+ {
get { return _hashtable.IsSynchronized; }
}
- public virtual Object SyncRoot {
+ public virtual Object SyncRoot
+ {
get { return _hashtable.SyncRoot; }
}
- public virtual int Count {
+ public virtual int Count
+ {
get { return _hashtable.count; }
}
}
-
+
// Implements a Collection for the values of a hashtable. An instance of
// this class is created by the GetValues method of a hashtable.
[Serializable]
private class ValueCollection : ICollection
{
private Hashtable _hashtable;
-
- internal ValueCollection(Hashtable hashtable) {
+
+ internal ValueCollection(Hashtable hashtable)
+ {
_hashtable = hashtable;
}
-
- public virtual void CopyTo(Array array, int arrayIndex) {
- if (array==null)
+
+ public virtual void CopyTo(Array array, int arrayIndex)
+ {
+ if (array == null)
throw new ArgumentNullException(nameof(array));
if (array.Rank != 1)
- throw new ArgumentException(Environment.GetResourceString("Arg_RankMultiDimNotSupported"));
- if (arrayIndex < 0)
- throw new ArgumentOutOfRangeException(nameof(arrayIndex), Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum"));
+ throw new ArgumentException(SR.Arg_RankMultiDimNotSupported);
+ if (arrayIndex < 0)
+ throw new ArgumentOutOfRangeException(nameof(arrayIndex), SR.ArgumentOutOfRange_NeedNonNegNum);
Contract.EndContractBlock();
if (array.Length - arrayIndex < _hashtable.count)
- throw new ArgumentException(Environment.GetResourceString("Arg_ArrayPlusOffTooSmall"));
+ throw new ArgumentException(SR.Arg_ArrayPlusOffTooSmall);
_hashtable.CopyValues(array, arrayIndex);
}
-
- public virtual IEnumerator GetEnumerator() {
+
+ public virtual IEnumerator GetEnumerator()
+ {
return new HashtableEnumerator(_hashtable, HashtableEnumerator.Values);
}
-
- public virtual bool IsSynchronized {
+
+ public virtual bool IsSynchronized
+ {
get { return _hashtable.IsSynchronized; }
}
- public virtual Object SyncRoot {
+ public virtual Object SyncRoot
+ {
get { return _hashtable.SyncRoot; }
}
- public virtual int Count {
+ public virtual int Count
+ {
get { return _hashtable.count; }
}
}
-
+
// Synchronized wrapper for hashtable
[Serializable]
private class SyncHashtable : Hashtable, IEnumerable
{
protected Hashtable _table;
-
- internal SyncHashtable(Hashtable table) : base(false) {
+
+ internal SyncHashtable(Hashtable table) : base(false)
+ {
_table = table;
}
-
+
/*================================GetObjectData=================================
**Action: Return a serialization info containing a reference to _table. We need
@@ -1093,115 +1187,148 @@ namespace System.Collections {
** context -- the StreamingContext for the current serialization (ignored)
**Exceptions: ArgumentNullException if info is null.
==============================================================================*/
- public override void GetObjectData(SerializationInfo info, StreamingContext context) {
- if (info==null) {
+ public override void GetObjectData(SerializationInfo info, StreamingContext context)
+ {
+ if (info == null)
+ {
throw new ArgumentNullException(nameof(info));
}
Contract.EndContractBlock();
// Our serialization code hasn't been fully tweaked to be safe
// for a concurrent writer.
- lock (_table.SyncRoot) {
- info.AddValue("ParentTable", _table, typeof(Hashtable));
- }
+ lock (_table.SyncRoot)
+ {
+ info.AddValue("ParentTable", _table, typeof(Hashtable));
+ }
}
- public override int Count {
+ public override int Count
+ {
get { return _table.Count; }
}
-
- public override bool IsReadOnly {
+
+ public override bool IsReadOnly
+ {
get { return _table.IsReadOnly; }
}
- public override bool IsFixedSize {
+ public override bool IsFixedSize
+ {
get { return _table.IsFixedSize; }
}
-
- public override bool IsSynchronized {
+
+ public override bool IsSynchronized
+ {
get { return true; }
}
- public override Object this[Object key] {
- get {
- return _table[key];
+ public override Object this[Object key]
+ {
+ get
+ {
+ return _table[key];
}
- set {
- lock(_table.SyncRoot) {
+ set
+ {
+ lock (_table.SyncRoot)
+ {
_table[key] = value;
}
}
}
-
- public override Object SyncRoot {
+
+ public override Object SyncRoot
+ {
get { return _table.SyncRoot; }
}
-
- public override void Add(Object key, Object value) {
- lock(_table.SyncRoot) {
+
+ public override void Add(Object key, Object value)
+ {
+ lock (_table.SyncRoot)
+ {
_table.Add(key, value);
}
}
-
- public override void Clear() {
- lock(_table.SyncRoot) {
+
+ public override void Clear()
+ {
+ lock (_table.SyncRoot)
+ {
_table.Clear();
}
}
-
- public override bool Contains(Object key) {
+
+ public override bool Contains(Object key)
+ {
return _table.Contains(key);
}
-
- public override bool ContainsKey(Object key) {
- if (key == null) {
- throw new ArgumentNullException(nameof(key), Environment.GetResourceString("ArgumentNull_Key"));
+
+ public override bool ContainsKey(Object key)
+ {
+ if (key == null)
+ {
+ throw new ArgumentNullException(nameof(key), SR.ArgumentNull_Key);
}
Contract.EndContractBlock();
return _table.ContainsKey(key);
}
-
- public override void CopyTo(Array array, int arrayIndex) {
- lock (_table.SyncRoot) {
+
+ public override void CopyTo(Array array, int arrayIndex)
+ {
+ lock (_table.SyncRoot)
+ {
_table.CopyTo(array, arrayIndex);
}
}
- public override Object Clone() {
- lock (_table.SyncRoot) {
+ public override Object Clone()
+ {
+ lock (_table.SyncRoot)
+ {
return Hashtable.Synchronized((Hashtable)_table.Clone());
}
}
-
- IEnumerator IEnumerable.GetEnumerator() {
+
+ IEnumerator IEnumerable.GetEnumerator()
+ {
return _table.GetEnumerator();
}
-
- public override IDictionaryEnumerator GetEnumerator() {
+
+ public override IDictionaryEnumerator GetEnumerator()
+ {
return _table.GetEnumerator();
}
-
- public override ICollection Keys {
- get {
- lock(_table.SyncRoot) {
+
+ public override ICollection Keys
+ {
+ get
+ {
+ lock (_table.SyncRoot)
+ {
return _table.Keys;
}
}
}
-
- public override ICollection Values {
- get {
- lock(_table.SyncRoot) {
+
+ public override ICollection Values
+ {
+ get
+ {
+ lock (_table.SyncRoot)
+ {
return _table.Values;
}
}
}
-
- public override void Remove(Object key) {
- lock(_table.SyncRoot) {
+
+ public override void Remove(Object key)
+ {
+ lock (_table.SyncRoot)
+ {
_table.Remove(key);
}
}
-
+
/*==============================OnDeserialization===============================
**Action: Does nothing. We have to implement this because our parent HT implements it,
** but it doesn't do anything meaningful. The real work will be done when we
@@ -1210,13 +1337,13 @@ namespace System.Collections {
**Arguments: None
**Exceptions: None
==============================================================================*/
- public override void OnDeserialization(Object sender) {
+ public override void OnDeserialization(Object sender)
+ {
return;
}
-
}
-
-
+
+
// Implements an enumerator for a hashtable. The enumerator uses the
// internal version number of the hashtabke to ensure that no modifications
// are made to the hashtable while an enumeration is in progress.
@@ -1230,12 +1357,13 @@ namespace System.Collections {
private int getObjectRetType; // What should GetObject return?
private Object currentKey;
private Object currentValue;
-
+
internal const int Keys = 1;
internal const int Values = 2;
internal const int DictEntry = 3;
-
- internal HashtableEnumerator(Hashtable hashtable, int getObjRetType) {
+
+ internal HashtableEnumerator(Hashtable hashtable, int getObjRetType)
+ {
this.hashtable = hashtable;
bucket = hashtable.buckets.Length;
version = hashtable.version;
@@ -1243,23 +1371,29 @@ namespace System.Collections {
getObjectRetType = getObjRetType;
}
- public Object Clone() {
+ public Object Clone()
+ {
return MemberwiseClone();
}
-
- public virtual Object Key {
- get {
- if (current == false) throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumNotStarted));
+
+ public virtual Object Key
+ {
+ get
+ {
+ if (current == false) throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumNotStarted));
return currentKey;
}
}
-
- public virtual bool MoveNext() {
- if (version != hashtable.version) throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumFailedVersion));
- while (bucket > 0) {
+
+ public virtual bool MoveNext()
+ {
+ if (version != hashtable.version) throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumFailedVersion));
+ while (bucket > 0)
+ {
bucket--;
Object keyv = hashtable.buckets[bucket].key;
- if ((keyv!= null) && (keyv != hashtable.buckets)) {
+ if ((keyv != null) && (keyv != hashtable.buckets))
+ {
currentKey = keyv;
currentValue = hashtable.buckets[bucket].val;
current = true;
@@ -1269,54 +1403,61 @@ namespace System.Collections {
current = false;
return false;
}
-
- public virtual DictionaryEntry Entry {
- get {
- if (current == false) throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumOpCantHappen));
+
+ public virtual DictionaryEntry Entry
+ {
+ get
+ {
+ if (current == false) throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumOpCantHappen));
return new DictionaryEntry(currentKey, currentValue);
}
}
-
-
- public virtual Object Current {
- get {
- if (current == false) throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumOpCantHappen));
-
- if (getObjectRetType==Keys)
+
+
+ public virtual Object Current
+ {
+ get
+ {
+ if (current == false) throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumOpCantHappen));
+
+ if (getObjectRetType == Keys)
return currentKey;
- else if (getObjectRetType==Values)
+ else if (getObjectRetType == Values)
return currentValue;
- else
+ else
return new DictionaryEntry(currentKey, currentValue);
}
}
-
- public virtual Object Value {
- get {
- if (current == false) throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumOpCantHappen));
+
+ public virtual Object Value
+ {
+ get
+ {
+ if (current == false) throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumOpCantHappen));
return currentValue;
}
}
-
- public virtual void Reset() {
- if (version != hashtable.version) throw new InvalidOperationException(Environment.GetResourceString(ResId.InvalidOperation_EnumFailedVersion));
+
+ public virtual void Reset()
+ {
+ if (version != hashtable.version) throw new InvalidOperationException(SR.GetResourceString(ResId.InvalidOperation_EnumFailedVersion));
current = false;
bucket = hashtable.buckets.Length;
currentKey = null;
currentValue = null;
}
}
-
+
// internal debug view class for hashtable
- internal class HashtableDebugView {
- private Hashtable hashtable;
- }
+ internal class HashtableDebugView
+ {
+ private Hashtable hashtable;
+ }
}
[FriendAccessAllowed]
internal static class HashHelpers
{
-
#if FEATURE_RANDOMIZED_STRING_HASHING
public const int HashCollisionThreshold = 100;
public static bool s_UseRandomizedStringHashing = String.UseRandomizedHashing();
@@ -1344,11 +1485,11 @@ namespace System.Collections {
// object until OnDeserialization is called.
private static ConditionalWeakTable<object, SerializationInfo> s_SerializationInfoTable;
- internal static ConditionalWeakTable<object, SerializationInfo> SerializationInfoTable
- {
- get
- {
- if(s_SerializationInfoTable == null)
+ internal static ConditionalWeakTable<object, SerializationInfo> SerializationInfoTable
+ {
+ get
+ {
+ if (s_SerializationInfoTable == null)
{
ConditionalWeakTable<object, SerializationInfo> newTable = new ConditionalWeakTable<object, SerializationInfo>();
Interlocked.CompareExchange(ref s_SerializationInfoTable, newTable, null);
@@ -1356,15 +1497,14 @@ namespace System.Collections {
return s_SerializationInfoTable;
}
-
}
- public static bool IsPrime(int candidate)
+ public static bool IsPrime(int candidate)
{
- if ((candidate & 1) != 0)
+ if ((candidate & 1) != 0)
{
- int limit = (int)Math.Sqrt (candidate);
- for (int divisor = 3; divisor <= limit; divisor+=2)
+ int limit = (int)Math.Sqrt(candidate);
+ for (int divisor = 3; divisor <= limit; divisor += 2)
{
if ((candidate % divisor) == 0)
return false;
@@ -1374,13 +1514,13 @@ namespace System.Collections {
return (candidate == 2);
}
- public static int GetPrime(int min)
+ public static int GetPrime(int min)
{
if (min < 0)
- throw new ArgumentException(Environment.GetResourceString("Arg_HTCapacityOverflow"));
+ throw new ArgumentException(SR.Arg_HTCapacityOverflow);
Contract.EndContractBlock();
- for (int i = 0; i < primes.Length; i++)
+ for (int i = 0; i < primes.Length; i++)
{
int prime = primes[i];
if (prime >= min) return prime;
@@ -1388,7 +1528,7 @@ namespace System.Collections {
//outside of our predefined table.
//compute the hard way.
- for (int i = (min | 1); i < Int32.MaxValue;i+=2)
+ for (int i = (min | 1); i < Int32.MaxValue; i += 2)
{
if (IsPrime(i) && ((i - 1) % Hashtable.HashPrime != 0))
return i;
@@ -1405,7 +1545,7 @@ namespace System.Collections {
// Note that this check works even when _items.Length overflowed thanks to the (uint) cast
if ((uint)newSize > MaxPrimeArrayLength && MaxPrimeArrayLength > oldSize)
{
- Debug.Assert( MaxPrimeArrayLength == GetPrime(MaxPrimeArrayLength), "Invalid MaxPrimeArrayLength");
+ Debug.Assert(MaxPrimeArrayLength == GetPrime(MaxPrimeArrayLength), "Invalid MaxPrimeArrayLength");
return MaxPrimeArrayLength;
}
@@ -1415,29 +1555,5 @@ namespace System.Collections {
// This is the maximum prime smaller than Array.MaxArrayLength
public const int MaxPrimeArrayLength = 0x7FEFFFFD;
-
-#if FEATURE_RANDOMIZED_STRING_HASHING
-
- public static object GetEqualityComparerForSerialization(object comparer)
- {
- if(comparer == null)
- {
- return null;
- }
-
- IWellKnownStringEqualityComparer cmp = comparer as IWellKnownStringEqualityComparer;
-
- if(cmp != null)
- {
- return cmp.GetEqualityComparerForSerialization();
- }
-
- return comparer;
- }
-
- private const int bufferSize = 1024;
- private static int currentIndex = bufferSize;
- private static readonly object lockObj = new Object();
-#endif // FEATURE_RANDOMIZED_STRING_HASHING
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-04 18:55:23 +0000