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Multithreaded programs allow the execution of multiple parts of a program at the same time. These parts are known as threads and are lightweight processes available within the process.Threads improve the application performance using parallelism. They share information like data segment, code segment files etc. with their peer threads while they contain their own registers, stack, counter etc.Some of the issues with multithreaded programs are as follows −Let us see them one by one −Increased Complexity − Multithreaded processes are quite complicated. Coding for these can only be handled by expert programmers.Complications due to Concurrency − It is difficult to ... Read More
The Queue module allows you to create a new queue object that can hold a specific number of items. There are following methods to control the Queue −get() − The get() removes and returns an item from the queue.put() − The put adds item to a queue.qsize() − The qsize() returns the number of items that are currently in the queue.empty() − The empty( ) returns True if queue is empty; otherwise, False.full() − the full() returns True if queue is full; otherwise, False.Example#!/usr/bin/python import Queue import threading import time exitFlag = 0 class myThread (threading.Thread): def __init__(self, threadID, name, q): ... Read More
The margin-top specifies the top margin of an element. It can have a value in length, % or auto.ExampleYou can try to run the following code to set the top margin This is a paragraph with a specified top margin This is another paragraph with a specified top margin in percent
The border-bottom-color property changes the color of the bottom border.ExampleYou can try to run the following code to implement the border-bottom-color property: p.demo { border:3px solid; border-bottom-color:#FF0000; } Example showing border top color property
The border-width property changes the color of the right border.ExampleYou can try to run the following code to implement the border-width property: Example showing border width and style
The border-right-style property changes the style of right border. You can try to run the following code to implement border-right-style property:Example Example showing right border
The threading module provided with Python includes a simple-to-implement locking mechanism that allows you to synchronize threads. A new lock is created by calling the Lock() method, which returns the new lock.The acquire(blocking) method of the new lock object is used to force threads to run synchronously. The optional blocking parameter enables you to control whether the thread waits to acquire the lock.If blocking is set to 0, the thread returns immediately with a 0 value if the lock cannot be acquired and with a 1 if the lock was acquired. If blocking is set to 1, the thread blocks and wait for the lock to be released.The release() method ... Read More
To set the dashed line for the border, use the border-style property. You can try to run the following code to implement border-style property value dashed to set dashed border:Example This is a dotted border.
Starvation and Deadlock are situations that occur when the processes that require a resource are delayed for a long time. However they are quite different concepts.Details about starvation and deadlock are given as follows −StarvationStarvation occurs if a process is indefinitely postponed. This may happen if the process requires a resource for execution that it is never alloted or if the process is never provided the processor for some reason.Some of the common causes of starvation are as follows −If a process is never provided the resources it requires for execution because of faulty resource allocation decisions, then starvation can ... Read More
To set the dotted line for the border, use the border-style property.ExampleYou can try to run the following code to implement border-style property value dotted to set dotted border: This is a dotted border.