Thread Synchronization:
A single flow of execution logic in a program.
Enable your program to perform concurrent processing.
Increases efficiency and responsiveness.
Share resources.
Unpredictable execution order.
Threads And Synchronization in C#
Concept about Threads And Synchronization in C#
it will help you about this concept
feel free
Download free programming applications on
http://www.androidapplications.xyz
This session discusses about the basic building blocks of Concurrent Programming in Java, which include:
synchronisation part 2, synchronized methods, intrinsic locks, atomic access, liveness, deadlock, starvation, livelock, guarded blocks, immutable objects, synchronized class example, strategy for defining immutable objects
Thread Synchronization:
A single flow of execution logic in a program.
Enable your program to perform concurrent processing.
Increases efficiency and responsiveness.
Share resources.
Unpredictable execution order.
Threads And Synchronization in C#
Concept about Threads And Synchronization in C#
it will help you about this concept
feel free
Download free programming applications on
http://www.androidapplications.xyz
This session discusses about the basic building blocks of Concurrent Programming in Java, which include:
synchronisation part 2, synchronized methods, intrinsic locks, atomic access, liveness, deadlock, starvation, livelock, guarded blocks, immutable objects, synchronized class example, strategy for defining immutable objects
Slide deck from my presentation on multi-threading with .NET. The presentation covers from beginner onwards and looks at current technologies (i.e. pre .NET 4.0) specifically.
What makes this extra special is the entire process of how I prepared for it, from finding content to slide deck layout to presentation prep is documented at: http://www.sadev.co.za/content/how-i-build-presentations-series-index
3.1 Identify the uses for and the interfaces (or classes) and methods to achieve the following features:
Servlet context init. Parameters
Servlet context listener
Servlet context attribute listener
Session attribute listeners
3.2 Identify the WebApp deployment descriptor element name that declares the following features:
Servlet context init. Parameters
Servlet context listener
Servlet context attribute listener
Session attribute listeners
A step towards the way you write the code in React application.In this presentation, I have given introduction about React hooks. Why we need it in our react applications and describe about the two most commonly used React Hooks API useState and useEffect. I also given the links of code snippets I added in these slides
Slide deck from my presentation on multi-threading with .NET. The presentation covers from beginner onwards and looks at current technologies (i.e. pre .NET 4.0) specifically.
What makes this extra special is the entire process of how I prepared for it, from finding content to slide deck layout to presentation prep is documented at: http://www.sadev.co.za/content/how-i-build-presentations-series-index
3.1 Identify the uses for and the interfaces (or classes) and methods to achieve the following features:
Servlet context init. Parameters
Servlet context listener
Servlet context attribute listener
Session attribute listeners
3.2 Identify the WebApp deployment descriptor element name that declares the following features:
Servlet context init. Parameters
Servlet context listener
Servlet context attribute listener
Session attribute listeners
A step towards the way you write the code in React application.In this presentation, I have given introduction about React hooks. Why we need it in our react applications and describe about the two most commonly used React Hooks API useState and useEffect. I also given the links of code snippets I added in these slides
This slideshow walks through common and popular Architectural design patterns such as Data-Driven Architecture, Micro-Services, Layered Architecture, and Micro-Kernel Architecture. I also go over the pros and cons and in which scenario each architecture is preferable
Architectural Patterns and Software Architectures: Client-Server, Multi-Tier,...Svetlin Nakov
Few days ago I gave a talk about software architectures. My goal was to explain as easy as possible the main ideas behind the most popular software architectures like the client-server model, the 3-tier and multi-tier layered models, the idea behind SOA architecture and cloud computing, and few widely used architectural patterns like MVC (Model-View-Controller), MVP (Model-View-Presenter), PAC (Presentation Abstraction Control), MVVM (Model-View-ViewModel). In my talk I explain that MVC, MVP and MVVM are not necessary bound to any particular architectural model like client-server, 3-tier of SOA. MVC, MVP and MVVM are architectural principles applicable when we need to separate the presentation (UI), the data model and the presentation logic.
Additionally I made an overview of the popular architectural principals IoC (Inversion of Control) and DI (Dependency Injection) and give examples how to build your own Inversion of Control (IoC) container.
This presentation introduces the concept of synchronization beatween threads, as implemented in the Java platform. It is the first part of a series of slides dedicated to thread synchronization. This slides introduces the following concepts:
- Thread safety
- Types of race conditions
- Locking (reentrant locks, intrinsic locks, synchronized blocks)
- Locking pitfalls
The presentation is took from the Java course I run in the bachelor-level informatics curriculum at the University of Padova.
This presentation is about advanced multithreading and concurrency in Java. I have tried my best to explain the concepts with code. Feel free to reach me if you have any questions or concerns.
Core Java Programming Language (JSE) : Chapter XII - ThreadsWebStackAcademy
What are Java Threads?
A thread is a:
Facility to allow multiple activities within a single process
Referred as lightweight process
A thread is a series of executed statements
Each thread has its own program counter, stack and local variables
A thread is a nested sequence of method calls
Its shares memory, files and per-process state
How to create thread:
There are two ways to create a thread:
1. By extending Thread class
2. By implementing Runnable interface.
Thread class:
Thread class provide constructors and methods to create and perform operations on a thread.Thread class extends Object class and implements Runnable interface.
Spin Locks and Contention : The Art of Multiprocessor Programming : NotesSubhajit Sahu
Highlighted notes of:
Chapter 7: Spin Locks and Contention
Book:
The Art of Multiprocessor Programming
Authors:
Maurice Herlihy
Nir Shavit
Maurice Herlihy has an A.B. in Mathematics from Harvard University, and a Ph.D. in Computer Science from M.I.T. He has served on the faculty of Carnegie Mellon University and the staff of DEC Cambridge Research Lab. He is the recipient of the 2003 Dijkstra Prize in Distributed Computing, the 2004 Gödel Prize in theoretical computer science, the 2008 ISCA influential paper award, the 2012 Edsger W. Dijkstra Prize, and the 2013 Wallace McDowell award. He received a 2012 Fulbright Distinguished Chair in the Natural Sciences and Engineering Lecturing Fellowship, and he is fellow of the ACM, a fellow of the National Academy of Inventors, the National Academy of Engineering, and the National Academy of Arts and Sciences.
Edward Kandrot is a senior software engineer on NVIDIA’s CUDA Algorithms team, has more than twenty years of industry experience optimizing code performance for firms including Adobe, Microsoft, Google, and Autodesk.Nir Shavit received B.Sc. and M.Sc. degrees in Computer Science from the Technion - Israel Institute of Technology in 1984 and 1986, and a Ph.D. in Computer Science from the Hebrew University of Jerusalem in 1990. Shavit is a co-author of the book The Art of Multiprocessor Programming. He is a recipient of the 2004 Gödel Prize in theoretical computer science for his work on applying tools from algebraic topology to model shared memory computability and of the 2012 Dijkstra Prize in Distributed Computing for the introduction of Software Transactional Memory. He is a past program chair of the ACM Symposium on Principles of Distributed Computing (PODC) and the ACM Symposium on Parallelism in Algorithms and Architectures (SPAA).
His current research covers techniques for desinging scalable software for multiprocessors, in particular concurrent data structures for multicore machines.
Nwe Embodiment (Naba Kalebara) of Lord Jagannath of PURI - The Greatest and B...assinha
NabaKalebara is an important and unique ceremony of the Grand Temple of Lord Jagannath at Puri in the state Odisha, India. It is the unique ceremony of ‘Birth' and the ‘Death’ of the presiding deities. No where this kind of Death and Birth of presiding deities are not seen. It is the Greatest and Biggest festival that will be observed this year ( 2015 ) beginning from 29th March. till 27th July.
This presentation describes about UMTS major components Key features, NodeB, RNC, GGSN,MSC, SGSN,VLR,HLR, Charging function, UMTS base stations and info about UMTS number allocated for MS.
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...NelTorrente
In this research, it concludes that while the readiness of teachers in Caloocan City to implement the MATATAG Curriculum is generally positive, targeted efforts in professional development, resource distribution, support networks, and comprehensive preparation can address the existing gaps and ensure successful curriculum implementation.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Unit 8 - Information and Communication Technology (Paper I).pdf
Architectural patterns part 3
1. Architectural Patterns
[PART 3]
(Synchronization idioms & Pattern)
based on
Pattern-Oriented Software Architecture, Patterns for Concurrent and
Networked Objects, Volume 2
by Douglas Schmidt, Michael Stal, Hans Rohnert and Frank Buschmann
2. Scoped Locking
It ensures that a lock is acquired automatically when control enters a scope and released
automatically when control leaves the scope.
Implementation 1. Define a guard class that acquires and releases a lock in its constructor and destructor
respectively.
class Thread_Mutex_Guard {
private:
Thread_Mutex *lock_; // Pointer to lock.
bool owner_; // Set to true when a lock is acquired
Thread_Mutex_Guard (const Thread_Mutex_Guard&);
// //disallow copy constructor and = operator
void operator= (const Thread_Mutex_Guard &);
public:
Thread_Mutex_Guard (Thread_Mutex &lock): lock_ (&lock), owner_ (false) {
lock_->acquire (); owner_ = true; }
~Thread_Mutex_Guard () { if (owner_) lock_->release (); }
};
3. Scoped Locking
2. call the thread_Mutex_Guard class object inside the class / function
Class test {
int test1(int index) {
Thread_Mutex_Guard guard (lock_);
if (/* condition */) {
// Do some more work ...
return true; } // End of scope releases the lock.
Return false ; // End of scope releases the lock.
}
Private :
Thread_Mutex lock_;
};
Mutex Lock is acquired and released automatically as control enters and leaves the test1()
method respectively.
Two specific functions acquire() and release() can be created inside the
Thread_Mutex_Guard class to acquire the lock and release the lock. In acquire(), it should
be verified if lock is already acquired. In release() should be verified if lock is already
released. This way if lock is already released , then release() in destructor can verify it.
4. Strategized Locking
The Strategized Locking technique parameterizes synchronization
mechanisms that protect a component's critical sections from concurrent
access.
To increase performance on large-scale multi-processor platforms, it may be
required to change the synchronization strategy to more efficient e.g. from
thread mutex to readers/writer lock which is time-consuming and error
prone.
Strategized Locking, the family of locking mechanisms becomes more
reusable and easier to apply across applications.
Implementation 1. Define an abstract interface for the locking mechanisms
2. Define a guard class and pass specific concrete lock object based on
requirement.
3. Update the component interface and implementation
5. Strategized Locking
# Define an abstract interface for the locking mechanisms
class Lock {
public:
// define methods.
virtual void acquire () = 0;
virtual void release () = 0;
};
# Define concrete classes for each kind of lock (e.g. concrete class for mutex lock)
class Thread_Mutex_Lock : public Lock {
public:
Virtual void acquire () { lock_.acquire (); }
Virtual void release () { lock_.release (); }
private:
Thread_Mutex mutexLock_; // Concrete lock type.
friend class Guard; // Define <test> as a friend so it can access <mutexLock_>
};
6. Strategized Locking
# Define guard class
class Guard {
public:
Guard (Thread_Mutex &lock): lock_ (&lock), owner_ (false) { lock_->acquire
(); owner_ = true; }
~Guard () { if (owner_) lock_->release (); }
private:
// Pointer to the lock.
Thread_Mutex *lock_;
bool owner_;
};
7. Strategized Locking
# Implement the interface
Polymorphic lock can be passed to the component either as a parameter in its
constructor or by adding a lock template parameter to the component declaration.
class test 1{
public:
// pass the Constructor the concrete lock object
test (Lock & mutexLock_) : lock_ (mutexLock_) {}; // lock passed as a parameter in its
constructor
void Function1(const char *pathname) {
Guard guard (lock_);
//Critical section
return;
}
private:
Thread_Mutex *lock_;
};
8. Thread-Safe Interface
This pattern ensures If a method that uses the Scoped Locking idiom, does
not call itself recursively to avoid self-deadlock.
Double-Checked Locking Optimization This technique avoids race conditions when accessing and modifying shared
resources by concurrent application during program execution
Implementation –
• All interface methods, (e.g. C++ public methods) should only
acquire/release component lock(s).
•
Implementation methods should only perform the task when called by interface
methods.
Example –
Thread safe single ton class Implementation with Double-Checked Locking technique.