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C# MemoryFailPoint and InsufficientMemoryException
Use a MemoryFailPoint to ensure the system has enough memory to run code that requires that memory.MemoryFailPoint. A complex algorithm requires considerable memory—and the system should ensure it has enough before even attempting to run the algorithm.
With MemoryFailPoint, an exception is thrown if there is not enough memory. We pass an int to MemoryFailPoint. This is the number of required megabytes of memory.
An example. This program shows the MemoryFailPoint in a situation where it will always throw an exception. It tries to ensure the system has 1 million megabytes of RAM.
And: The system does not have this amount of RAM. So an InsufficientMemoryException is thrown.
ExceptionC# program that uses MemoryFailPoint
using System.Runtime;
class Program
{
static void Main()
{
// This program for some reason needs a huge amount of memory.
using (MemoryFailPoint point = new MemoryFailPoint(1000000))
{
// An exception is thrown at this point.
// ... The computer does not have enough memory.
// ... So we do not need to execute the inner code.
}
}
}
Output
Unhandled Exception: System.InsufficientMemoryException:
Insufficient memory to meet the expected demands of an operation,
and this system is likely to never satisfy this request.
If this is a 32 bit system, consider booting in 3 GB mode.
at System.Runtime.MemoryFailPoint..ctor(Int32 sizeInMegabytes)
at Program.Main()...
Some notes. In complex systems, MemoryFailPoint can help improve reliability. We can avoid starting a method if we estimate it will not be able to finish.
Notes, reliability. For methods that are critical and require large amounts of RAM, MemoryFailPoint is probably something that should always be used.
A summary. With MemoryFailPoint, we improve complex systems by causing "early failures" instead of possibly causing worse problems because a method starts (but does not finish) its work.
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- C# String For Loop, Count Spaces in String
- C# string.Intern and IsInterned
- C# String IsUpper, IsLower
- C# String Length Property: Get Character Count
- C# String Literal: Newline and Quote Examples
- C# StringBuilder Capacity
- C# StringBuilder Clear (Set Length to Zero)
- C# StringBuilder Data Types
- C# StringBuilder Performance
- C# StringBuilder Equals (If Chars Are Equal)
- C# StringBuilder Memory
- C# StringBuilder ToString: Get String From StringBuilder
- C# StringWriter Class
- C# Sum Method: Add up All Numbers
- C# Switch Char, Test Chars With Cases
- C# Switch Enum
- C# System (using System namespace)
- C# Tag Property: Windows Forms
- C# TextInfo Examples
- C# TextReader, Returned by File.OpenText
- C# TextWriter, Returned by File.CreateText
- C# this Keyword
- C# ThreadPool
- C# Thread Join Method (Join Array of Threads)
- C# ThreadPool.SetMinThreads Method
- C# TimeZone Examples
- C# Get Title From HTML With Regex
- C# ToArray Extension Method
- C# ToCharArray: Convert String to Array
- C# ToDictionary Method
- C# Token
- C# ToList Extension Method
- C# ToLookup Method (Get ILookup)
- C# ToLower and ToUpper: Uppercase and Lowercase Strings
- ToolStripContainer Control: Dock, Properties
- C# ToolTip: Windows Forms
- C# ToString Integer Optimization
- C# ToString: Get String From Object
- C# ToTitleCase Method
- C# TrackBar: Windows Forms
- C# Tree and Nodes Example: Directed Acyclic Word Graph
- C# TreeView Tutorial
- C# Trim Strings
- C# Thread Methods
- C# History
- C# Features
- C# Variables
- C# Data Types
- C# Operators
- C# Keywords
- C# New Features | C# Version Features
- C# Programs
- C# Program to swap numbers without third variable
- C# Program to convert Decimal to Binary
- C# Program to Convert Number in Characters
- C# Program to Print Alphabet Triangle
- C# Program to print Number Triangle
- C# Program to generate Fibonacci Triangle
- C# String Compare() method
- C# String CompareOrdinal() method
- C# String CompareTo() method
- C# String Concat() method
- C# String Contains() method
- C# String CopyTo() method
- C# String EndsWith() method
- C# String Equals() method
- C# String Format() method
- C# String IndexOf() method
- C# String Insert() method
- C# String Intern(String str) method
- C# String IsInterned() method
- C# String Normalize() method
- C# String IsNullOrEmpty() method
- C# String IsNullOrWhiteSpace() method
- C# String Join() method
- C# String LastIndexOf() method
- C# String LastIndexOfAny() method
- C# String PadLeft() method
- C# String PadRight() method
- C# Nullable
- C# String Remove() method
- C# String Replace() method
- C# String Split() method
- C# String StartsWith() method
- C# String SubString() method
- C# Partial Types
- C# Iterators
- C# Delegate Covariance
- C# Delegate Inference
- C# Anonymous Types
- C# Extension Methods
- C# Query Expression
- C# Partial Method
- C# Implicitly Typed Local Variable
- C# Object and Collection Initializer
- C# Auto Implemented Properties
- C# Dynamic Binding
- C# Named and Optional Arguments
- C# Asynchronous Methods
- C# Caller Info Attributes
- C# Using Static Directive
- C# Exception Filters
- C# Await in Catch Finally Blocks
- C# Default Values for Getter Only Properties
- C# Expression Bodied Members
- C# Null Propagator
- C# String Interpolation
- C# nameof operator
- C# Dictionary Initializer
- C# Pattern Matching
- C# Tuples
- C# Deconstruction
- C# Local Functions
- C# Binary Literals
- C# Ref Returns and Locals
- C# Expression Bodied Constructors and Finalizers
- C# Expression Bodied Getters and Setters
- C# Async Main
- C# Default Expression