C# में Stack.IsSynchronized प्रॉपर्टी यह जांचने के लिए उपयोग की जाती है कि स्टैक तक पहुंच सिंक्रोनाइज्ड (थ्रेड-सेफ) है या नहीं। यह एक बूलियन मान लौटाती है।
सिंटैक्स
public virtual bool IsSynchronized { get; }
उदाहरण 1: डिफ़ॉल्ट स्टैक की सिंक्रोनाइजेशन जांच
using System;
using System.Collections;
public class Demo {
public static void Main() {
Stack stack = new Stack();
stack.Push("Inspiron");
stack.Push("Alienware");
stack.Push("Projectors");
stack.Push("Monitors");
stack.Push("XPS");
stack.Push("Laptop");
stack.Push("Notebook");
Console.WriteLine("Stack elements...");
foreach(string val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("Count of elements = " + stack.Count);
Console.WriteLine("Element Speakers in stack? = " + stack.Contains("Speakers"));
stack.Push("Headphone");
stack.Push("Keyboard");
stack.Push("Earphone");
Console.WriteLine("\nStack elements...updated");
foreach(string val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("Count of elements (updated) = " + stack.Count);
Console.WriteLine("\nElement Alienware in stack? = " + stack.Contains("Alienware"));
Console.WriteLine("Is the Stack synchronized? = " + stack.IsSynchronized);
Stack stack2 = (Stack)stack.Clone();
Console.WriteLine("\nStack elements...cloned");
IEnumerator demoEnum = stack2.GetEnumerator();
while (demoEnum.MoveNext()) {
Console.WriteLine(demoEnum.Current);
}
Console.WriteLine("Count of elements (updated) = " + stack.Count);
}
}
आउटपुट
Stack elements... Notebook Laptop XPS Monitors Projectors Alienware Inspiron Count of elements = 7 Element Speakers in stack? = False Stack elements...updated Earphone Keyboard Headphone Notebook Laptop XPS Monitors Projectors Alienware Inspiron Count of elements (updated) = 10 Element Alienware in stack? = True Is the Stack synchronized? = False Stack elements...cloned Earphone Keyboard Headphone Notebook Laptop XPS Monitors Projectors Alienware Inspiron Count of elements (updated) = 10
उदाहरण 2: Synchronized() मेथड से थ्रेड-सेफ स्टैक बनाना
using System;
using System.Collections;
public class Demo {
public static void Main() {
Stack stack = new Stack();
stack.Push(150);
stack.Push(300);
stack.Push(500);
stack.Push(750);
stack.Push(1000);
stack.Push(1250);
stack.Push(1500);
stack.Push(2000);
stack.Push(2500);
Console.WriteLine("Stack elements...");
foreach(int val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("Count of elements = " + stack.Count);
Console.WriteLine("Element 750 in stack? = " + stack.Contains(750));
stack.Push(3000);
Console.WriteLine("\nStack elements...updated");
foreach(int val in stack) {
Console.WriteLine(val);
}
Console.WriteLine("Count of elements (updated) = " + stack.Count);
Console.WriteLine("Element 5000 in stack? = " + stack.Contains(5000));
Stack stack2 = (Stack)stack.Clone();
Console.WriteLine("\nStack elements...cloned");
foreach(int val in stack2) {
Console.WriteLine(val);
}
Console.Write("Count of elements (stack2) = " + stack2.Count);
Console.WriteLine("Is the Stack synchronized? = " + stack.IsSynchronized);
// सिंक्रोनाइज्ड वर्जन बनाएं
Stack stack3 = Stack.Synchronized(stack);
Console.WriteLine("Is the Stack synchronized? = " + stack3.IsSynchronized);
}
}
आउटपुट
Stack elements... 2500 2000 1500 1250 1000 750 500 300 150 Count of elements = 9 Element 750 in stack? = True Stack elements...updated 3000 2500 2000 1500 1250 1000 750 500 300 150 Count of elements (updated) = 10 Element 5000 in stack? = False Stack elements...cloned 3000 2500 2000 1500 1250 1000 750 500 300 150 Count of elements (stack2) = 10 Is the Stack synchronized? = False Is the Stack synchronized? = True
महत्वपूर्ण बिंदु
- डिफ़ॉल्ट
Stackथ्रेड-सेफ नहीं है (IsSynchronized = false)। Stack.Synchronized(stack)एक सिंक्रोनाइज्ड व्रैपर लौटाता है।- सिंक्रोनाइज्ड व्रैपर केवल व्यक्तिगत ऑपरेशंस को थ्रेड-सेफ बनाता है; कंपाउंड ऑपरेशंस के लिए मैन्युअल लॉकिंग अभी भी आवश्यक है।
- जेनेरिक
Stack<T>मेंIsSynchronizedनहीं होता;lockयाConcurrentStack<T>उपयोग करें।
आधुनिक विकल्प
.NET 4.0+ में System.Collections.Concurrent.ConcurrentStack<T> अंतर्निहित थ्रेड-सेफ्टी प्रदान करता है और बेहतर प्रदर्शन देता है।
