Posts

Hold and Wait? In dead lock

 Hold and wait  = To ensure that hold and wait never occur in the system we must guarantee. That whenever the process request for a resource, it does not hold and other resource. i) We can process request for a resource to the process that is required for its execution before starting its execution. Problem:- = For eg- If there 3 resources that is required by a process and we have given all the resources before starting execution of the process then there might be a situation that initially we required only two resource and after one hour we want third resource and this will cause starvation for the another process that wants this resource in that waiting time that resource can be allocated to other process and complete there execution.
Post a Comment
Read more

Circular wait ? In dead lock.

  Set of processer are waiting for each other in a circular fashion.  For eg= there are 3 processes p0,p1,p2  Such that p0 is waiting for the resource held by process p1 and process p1 is waiting for the resource held by process p2 and further process p2 is waiting for the resource held by p0. Methods of handling deadlock  1 Deadlock Prevention. 2 Deadlock Avoidence. 3 Deadlock Detection and Resolution. Deadlock Prevention. = It ensures that the four condition for resource deadlock do not occur simultaneously. This can be done by following methods: (i) We only use the lock for non-shareable resources and if the resource is shareable then we will not use the lock here. (ii) That ensures in case of shareable resources, multiple process can access it at same time. Problem:- = Here the problem is that we can only do it in case of no-shareable resources like printer we can have use mutual exclusion.
Post a Comment
Read more

Non-Preemptive

  If a process is holding some resource and request other resource that are required and these resources are not available immediately then the resource that current process is holding are preemptive
Post a Comment
Read more

Type of Array?

  🔹 1. One-Dimensional Array (1D Array) A linear list of elements. Example in Python: python arr = [ 10 , 20 , 30 , 40 ] 🔹 2. Two-Dimensional Array (2D Array) An array of arrays (often used to represent matrices). Example in Python: python arr = [[ 1 , 2 ], [ 3 , 4 ], [ 5 , 6 ]] 🔹 3. Multi-Dimensional Array Arrays with more than two dimensions. Common in scientific computing (e.g., NumPy in Python). Example in Python using NumPy: python import numpy as np arr = np.array([[[ 1 , 2 ], [ 3 , 4 ]], [[ 5 , 6 ], [ 7 , 8 ]]]) 🔹 4. Dynamic Array Arrays that can change size during execution. Example: Python's list , Java’s ArrayList , C++ vector . 🔹 5. Static Array Fixed size, declared at creation. Used in languages like C or C++. Example in C: int arr[ 5 ] = { 1 , 2 , 3 , 4 , 5 }; 🔹 6. Jagged Array (Ragged Array) An array of arrays with different lengths (non-uniform). Example in C#: int [][] arr = new int [ 3 ][]; a...
Post a Comment
Read more

Gradient Tool? In adobe photoshop

Image
  Gradient Tool allows you to specify a gradient of color. Using it is fairly easy, you simply choose the gradient tool from the toolbox click on the canvas and drag out an area to fill with the gradient.
Post a Comment
Read more

Type tool? Adobe Photoshop

Image
  Type tool used to place text on an image.
Post a Comment
Read more

Jump to ready image? In adobe photoshop

Image
  Jump to ready image use to easily launch the image ready program.
Post a Comment
Read more