Asked by: Pascua Wollerscheid
technology and computing information and network security

What is condition synchronization?

28
Condition Synchronization (or merely synchronization) is any mechanism that protects areas of memory from being modified by two different threads at the same time. Let's say you are out doing shopping, and the wife is at home paying the bills.


Also to know is, what is synchronization panel?

Synchronization panels are mainly designed and used to meet power system requirements. These panels function both manually and with an automatic synchronizing function for two or more generators or breakers. They are widely used in synchronizing generators and offering multiplex solutions.

Also Know, what is the difference between synchronization and mutual exclusion? 2 Answers. Mutual exclusion means that only a single thread should be able to access the shared resource at any given point of time. This avoids the race conditions between threads acquireing the resource. Synchronization means that you synchronize/order the access of multiple threads to the shared resource.

Subsequently, one may also ask, how monitors are used in synchronization?

Monitor (synchronization) In concurrent programming, a monitor is a synchronization construct that allows threads to have both mutual exclusion and the ability to wait (block) for a certain condition to become false. Monitors also have a mechanism for signaling other threads that their condition has been met.

What are two methods of synchronization?

There are two types of synchronization: data synchronization and process synchronization: Process Synchronization: The simultaneous execution of multiple threads or processes to reach a handshake such that they commit a certain sequence of actions. Lock, mutex, and semaphores are examples of process synchronization.

Related Question Answers

Eugeny Palinhos

Professional

What are the methods of synchronization?

There are five conditions that must be met before the synchronization process takes place. The source (generator or sub-network) must have equal line voltage, frequency, phase sequence, phase angle, and waveform to that of the system to which it is being synchronized.

Romana Szhacht

Professional

What is the need of synchronization?

The need for synchronization originates when processes need to execute concurrently. The main purpose of synchronization is the sharing of resources without interference using mutual exclusion. The other purpose is the coordination of the process interactions in an operating system.

Waclaw Papageorge

Explainer

What is the function of AMF panel?

AMF panel is the short form of Auto Mains Failure panel. It is sometimes also called an Automatic Transfer Switch. It is normally connected to the generator set to control the generator set function, automatically detecting a power cut and causing the generator to start and support the load.

Xumei Vysokosov

Explainer

What is totalizing panel?

Totalizing & Synchronizing Panels. A Synchronizing Panel works between two or more different power sources like DG sets to manage power supply. Synchronization helps in making different DG sets behave as a virtual single unit and eliminates subdivision of total load.

Kimbra Brem

Explainer

What do you mean by synchronization of alternator?

Synchronization of alternator means connecting an alternator into grid in parallel with many other alternators, that is in a live system of constant voltage and constant frequency. Phase sequence: The phase sequence of the three phases of alternator must be similar to that of the grid or bus-bars.

Florene Radloff

Pundit

Why do we synchronize generators?

Need for Synchronization is that if two segments of a grid are disconnected, they cannot exchange AC power again until they are brought back into exact synchronization. It is needed for the generator because it is accomplished by controlling the exciter current and the engine speed of the generator.

Suiping Niembro

Pundit

What are the possible effects of wrong synchronization?

In summarized way poor phase matching during synchronization causes the following effects in power system.
  • High transient toque with high current which damages the windings of the generator.
  • High instant voltage which may damage the insulation of equipment.
  • Power system protection operation.

Khatima Des

Pundit

What is the difference between monitor and semaphore?

The basic difference between semaphore and monitor is that the semaphore is an integer variable S which indicate the number of resources available in the system whereas, the monitor is the abstract data type which allows only one process to execute in critical section at a time.

Wanessa

Pundit

What do you mean by semaphore?

Semaphore (programming) From Wikipedia, the free encyclopedia. In computer science, a semaphore is a variable or abstract data type used to control access to a common resource by multiple processes in a concurrent system such as a multitasking operating system. A semaphore is simply a variable.

Natale Intxaurrieta

Pundit

What is the difference between a mutex and a semaphore?

The difference between a mutex and a semaphore is that only one thread at a time can acquire a mutex, but some preset number of threads can concurrently acquire a semaphore. That's why a mutex is sometimes called a binary semaphore. A mutex is used for mutual exclusion.

Xose Reihsig

Teacher

What is a semaphore in C?

A semaphore is a data structure used to help threads work together without interfering with each other. The POSIX standard specifies an interface for semaphores; it is not part of Pthreads, but most UNIXes that implement Pthreads also provide semaphores.

Soumicha Winnekens

Teacher

How do condition variables work?

Condition variables are synchronization primitives that enable threads to wait until a particular condition occurs. Condition variables are user-mode objects that cannot be shared across processes. Condition variables enable threads to atomically release a lock and enter the sleeping state.

Chahd Dyer

Teacher

How is condition variable implemented?

The condition variable is a synchronization primative that provides a queue for threads waiting for a resource. The implementation of condition variables involves several mutexes. Condition variables support three operations: wait - add calling thread to the queue and put it to sleep.

Yijing Queijos

Teacher

What is a semaphore and where do we use them?

Semaphores are integer variables that are used to solve the critical section problem by using two atomic operations, wait and signal that are used for process synchronization. The wait operation decrements the value of its argument S, if it is positive.

Petkov Ben Amar

Reviewer

What advantages do monitors have over semaphores?

What is one advantage of using monitors over using semaphores? (a) Mutual exclusion in monitor is automatic while mutual exclusion in semaphore needs to be coded explicitly. (b) Shared variables are global to all processes in the monitor while shared variables are hidden in semaphores.

Xantal Sunderdiek

Reviewer

What is process synchronization in operating system?

Process Synchronization means sharing system resources by processes in a such a way that, Concurrent access to shared data is handled thereby minimizing the chance of inconsistent data. Maintaining data consistency demands mechanisms to ensure synchronized execution of cooperating processes.

Eresvita Wachholtz

Reviewer

What is mutual exclusion in deadlock?

Necessary conditions
A deadlock situation on a resource can arise if and only if all of the following conditions hold simultaneously in a system: Mutual exclusion: At least one resource must be held in a non-shareable mode. No preemption: a resource can be released only voluntarily by the process holding it.

Celsina Dikarev

Reviewer

What is starvation with respect to concurrency control by mutual exclusion?

What is starvation with respect to concurrency control by mutual exclusion? In the context of concurrency control using mutual exclusion, this situation occurs when many processes are contending to enter in the critical section and a process is indefinitely denied access.

Yahel Bagrich

Supporter

What is mutual exclusion in OS?

A mutual exclusion (mutex) is a program object that prevents simultaneous access to a shared resource. This concept is used in concurrent programming with a critical section, a piece of code in which processes or threads access a shared resource.

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17th January, 2020

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