Tortuga is a Java framework for discrete event simulation that models entities as separate threads. It aims to reduce the burden on developers by focusing on simulation logic rather than event handling code. Tortuga simulations can include thousands of entities and be integrated into larger Java systems. It uses aspect-oriented programming and can be run on various operating systems. Developers define entity behavior through agenda and action methods to model interactions over time.
PyCon Canada 2019 - Introduction to Asynchronous ProgrammingJuti Noppornpitak
Since Python 3.5 and PEP 492, we have been able to write asynchronous programs in an easy and Pythonic way without external libraries. Even so, it is still difficult to understand what asynchronous programming is all about and when we, Python developers, should consider using it. This talk will give you a gentle introduction to the world of asynchronous programming, focusing mostly on the core concept of async programming, how it works, and what its applications are, in order to provide a good foundation to Python developers on the topic. On top of that, we will explore a small code example (mostly involving the built-in asyncio) and briefly exam the source code of CPython to find out how it works. This talk will also give you some brief comparison of threading.Thread and ThreadPoolExecutor.
This document provides an overview of multithreading in 3 sentences or less:
Multithreading allows a program to split into multiple threads that can run simultaneously, improving responsiveness, utilizing multiprocessors efficiently, and structuring programs more effectively. Threads transition between different states like new, runnable, running, blocked, and dead over their lifetime. Common threading techniques include setting thread priority, enabling communication between threads, and avoiding deadlocks when multiple threads depend on each other's locks.
This document discusses how to dynamically stop and start Mule processes using Groovy scripts and choice exception handling. It provides steps to identify scenarios to suspend a process, catch errors using choice exception strategies, write Groovy scripts to stop or start processes by checking conditions, and call those scripts from the catch exception strategy or message sources like JMS to control process flows at runtime without redeployment.
Cucumber is a tool that supports behavior-driven development (BDD). It allows test cases to be written in a simple language called Gherkin that both programmers and non-programmers can understand. Gherkin features are made up of scenarios with steps using keywords like "Given", "When", and "Then" to describe preconditions, actions, and expected outcomes. Cucumber supports many programming languages and can integrate with frameworks like Selenium for browser automation.
This document discusses debugging techniques for Lightning components. It outlines six stages of debugging and introduces debugging tools like enabling debug logs, the Lightning Chrome inspector, and performance profiling. It also covers logging events and actions, using console logs and breakpoints for JavaScript debugging, and how the Locker service provides security for Lightning components.
In this you learn about Control Statements
1. Selection Statements
i. If
ii. If-else
iii. Nested-if
iv. If-Elseif ladder
2. Looping Statements
i. while loop
ii. do-while loop
iii. For loop
3. Jumping Statements
i. break
ii. continue
iii return
Tortuga is a Java framework for discrete event simulation that models entities as separate threads. It aims to reduce the burden on developers by focusing on simulation logic rather than event handling code. Tortuga simulations can include thousands of entities and be integrated into larger Java systems. It uses aspect-oriented programming and can be run on various operating systems. Developers define entity behavior through agenda and action methods to model interactions over time.
PyCon Canada 2019 - Introduction to Asynchronous ProgrammingJuti Noppornpitak
Since Python 3.5 and PEP 492, we have been able to write asynchronous programs in an easy and Pythonic way without external libraries. Even so, it is still difficult to understand what asynchronous programming is all about and when we, Python developers, should consider using it. This talk will give you a gentle introduction to the world of asynchronous programming, focusing mostly on the core concept of async programming, how it works, and what its applications are, in order to provide a good foundation to Python developers on the topic. On top of that, we will explore a small code example (mostly involving the built-in asyncio) and briefly exam the source code of CPython to find out how it works. This talk will also give you some brief comparison of threading.Thread and ThreadPoolExecutor.
This document provides an overview of multithreading in 3 sentences or less:
Multithreading allows a program to split into multiple threads that can run simultaneously, improving responsiveness, utilizing multiprocessors efficiently, and structuring programs more effectively. Threads transition between different states like new, runnable, running, blocked, and dead over their lifetime. Common threading techniques include setting thread priority, enabling communication between threads, and avoiding deadlocks when multiple threads depend on each other's locks.
This document discusses how to dynamically stop and start Mule processes using Groovy scripts and choice exception handling. It provides steps to identify scenarios to suspend a process, catch errors using choice exception strategies, write Groovy scripts to stop or start processes by checking conditions, and call those scripts from the catch exception strategy or message sources like JMS to control process flows at runtime without redeployment.
Cucumber is a tool that supports behavior-driven development (BDD). It allows test cases to be written in a simple language called Gherkin that both programmers and non-programmers can understand. Gherkin features are made up of scenarios with steps using keywords like "Given", "When", and "Then" to describe preconditions, actions, and expected outcomes. Cucumber supports many programming languages and can integrate with frameworks like Selenium for browser automation.
This document discusses debugging techniques for Lightning components. It outlines six stages of debugging and introduces debugging tools like enabling debug logs, the Lightning Chrome inspector, and performance profiling. It also covers logging events and actions, using console logs and breakpoints for JavaScript debugging, and how the Locker service provides security for Lightning components.
In this you learn about Control Statements
1. Selection Statements
i. If
ii. If-else
iii. Nested-if
iv. If-Elseif ladder
2. Looping Statements
i. while loop
ii. do-while loop
iii. For loop
3. Jumping Statements
i. break
ii. continue
iii return
This Slide talks about multithreading in python with sample code snippets.
Connect me at
https://nextsrini.blogspot.com/
https://www.youtube.com/channel/UCqIHkbuf1uGiN8QXwWX5dkQ
An activity represents a single screen in an Android application. Activities have lifecycles with states like active, paused, stopped. Fragments allow dividing an activity screen into multiple interactive regions and reuse fragments across activities. Fragments have their own lifecycles tied to their host activity. Developers can add fragments statically in XML layouts or programmatically using FragmentManager.
UI Interactions Testing with FlexMonkeyArul Kumaran
FlexMonkey is a testing framework for Flex applications that allows for automated testing of user interfaces. It captures tests like a functional tool but scripts them within FlexUnit, a unit testing framework for Flex. FlexMonkey is free, open source, and built on the Adobe Flex Automated Testing API. It handles Flex UI events without needing JavaScript or browser plugins by writing unit tests entirely in ActionScript.
This is an introduction to multithreading programming used by java, there is a small description that helps you to understand how it works, as we know java is a multithreaded programming language and its an important part to learn it if we are studying java . I hope this will help anyone who wants to learn about java.
Github Actions enables you to create custom software development lifecycle workflows directly in your Github repository. These workflows are made out of different tasks so-called actions that can be run automatically on certain events.
Flipkart.com is one of India's top 100 websites in terms of traffic. We use continuous deployment techniques to achieve quick deployments multiple times a day. Techniques and best practices we follow that we believe could be interesting to many others.
Describe synchronization techniques used by programmers who develop .pdfexcellentmobiles
Describe synchronization techniques used by programmers who develop applications for
LUBUNTU (LINUX)
Solution
Concurrency and locking: Synchronization methods are necessary when the property of
concurrency exists. Concurrency exists when two or more processes execute over the same time
period and potentially interact with one another. The Linux kernel supports concurrency in both
modes. The kernel itself is dynamic, and race conditions can be created in a number of ways. The
Linux kernel also supports multiprocessing known as symmetric multiprocessing (SMP).
Concurrency can occur on uniprocessor (UP) hosts where multiple threads share the same CPU
and preemption creates race conditions. Preemption is sharing the CPU transparently by
temporarily pausing one thread to allow another to execute. A race condition occurs when two or
more threads manipulate a shared data item and the result depends upon timing of the execution.
Concurrency also exists in multiprocessor (MP) machines, where threads executing
simultaneously in each processor share the same data. Note that in the MP case there is true
parallelism because the threads execute simultaneously. In the UP case, parallelism is created by
preemption. The difficulties of concurrency exist in both modes.
To combat the issue of race conditions, the concept of a critical section was created. A critical
section is a portion of code that is protected against multiple access. This portion of code can
manipulate shared data or a shared service (such as a hardware peripheral). Critical sections
operate on the principle of mutual exclusion.
Race condition Situation where simultaneous manipulation of a resource by two or more threads
causes inconsistent results.
Critical section Segment of code that coordinates access to a shared resource.
Mutual exclusion Property of software that ensures exclusive access to a shared resource.
Deadlock Special condition created by two or more processes and two or more resource locks
that keep processes from doing productive work.
Linux synchronization methods
Now that you have a little theory under your belt and an understanding of the problem to be
solved, let\'s look at the various ways that Linux supports concurrency and mutual exclusion. In
the early days, mutual exclusion was provided by disabling interrupts, but this form of locking is
inefficient (even though you can still find traces of it in the kernel). This method also doesn\'t
scale well and doesn\'t guarantee mutual exclusion on other processors.
The atomic operators are ideal for situations where the data you need to protect is simple,
such as a counter. While simple, the atomic API provides a number of operators for a variety of
situations. Here\'s a sample use of the API.
To declare an atomic variable, you simply declare a variable of type atomic_t. This structure
contains a single int element. Next, you ensure that your atomic variable is initialized using the
ATOMIC_INIT symbolic constant. In the case .
Puppet Camp Düsseldorf 2014: Continuously Deliver Your Puppet Code with Jenki...Puppet
Continuously Deliver Your Puppet Code with Jenkins, r10k and Git (Intermediate) - Toni Schmidbauer, IT Solutions at Spardat GmbH given at Puppet Camp Düsseldorf 2014
Puppet Camp Duesseldorf 2014: Toni Schmidbauer - Continuously deliver your pu...NETWAYS
At s-IT solutions we manage a diverse environment of about 1000 linux (redhat), solaris 10/11 and AIX hosts with the help of puppet open source.
In this talk we give a brief introduction of continuous delivery and explain how we manage our current puppet infrastructure with a focus on the deployment process. We introduce jenkins, a continuous integration server and how we use it to continuously deliver our puppet code base. We also explain how we use git and r10k to manage internal and external (github/forge) puppet modules.
Furthermore, we discuss current shortcomings of our setup and how we plan to improve.
Gogs application is a Version control System (VCS) software. It can also be used to version control Splunk Configuration. It is 100% open source by DigitalOcean. It also has webhook option to send payload to Splunk. Whenever an activity occurs in Gogs, it does a POST request with an event to the target forwarder of Splunk.
how to minimize the impact of flaky tests
Flakes aka tests that don’t behave deterministically, i.e. they fail sometimes and pass sometimes, are an ever recurring problem in software development. This is especially the sad reality when running e2e tests where a lot of components are involved. There are various reasons why a test can be flaky, however the impact can be as fatal as CI being loaded beyond capacity causing overly long feedback cycles or even users losing trust in CI itself.
We want to remove flakes as fast as possible to minimize the number of retests required. This leads to shorter time to merge, reduces CI user frustration, improves trust in CI, while at the same time it decreases the overall load for the CI system.
We start by generating a report of tests that have failed at least once inside a merged PR, meaning that in the end all tests have succeeded, thus flaky tests have been run inside CI. We then look at the report to separate flakes from real issues and forward the flakes to dev teams.
As a result retest numbers have gone down significantly over the last year.
After attending the session the user will have an idea of what our flake process is, how we exercise it and what the actual outcomes are.
The document discusses monitors, which are a synchronization mechanism used in operating systems. A monitor is a collection of shared variables and associated procedures that enforce mutual exclusion. Only one process can be active in a monitor at a time. Monitors were developed to make it easier to avoid deadlocks compared to other synchronization methods like semaphores. The document provides examples of how monitors can be used to solve common synchronization problems.
This document discusses different types of loops in Java programming: while, for, do-while, and enhanced for loops. It provides the syntax and flow for each loop type along with examples. The key loop types are:
- While loops repeat while a condition is true, testing at the start of each iteration.
- For loops iterate a specific number of times, with initialization, condition, and update sections.
- Do-while loops are like while loops but test the condition at the end, so the body executes at least once.
- Enhanced for loops iterate over collections/arrays, declaring a block variable to access each element.
The document contains interview questions and answers related to sections, control identification, modules, actions, parameters, and other concepts in Tosca automation testing. Key points include the different section types in Tosca, methods for identifying controls, types of modules, actions like verify and buffer, parameters like TCP and business parameters, and concepts like synchronization, libraries, and recovery scenarios.
Instant LAMP Stack with Vagrant and PuppetPatrick Lee
Do you enjoy installing and configuring Apache, PHP, and MySQL every time you reinstall your OS or switch to a new machine? Neither do I. And we never have to do it again. Vagrant can use the VirtualBox API and configuration defined in Puppet to spin up a development VM in a couple of minutes. And it's really easy to do. I'll start with the simplest possible example and work up to a cluster of VM's. Feel free to bring your laptop and follow along.
This document outlines the agenda for a meetup on MUnit and Mule migration. The agenda includes an introduction to MUnit testing framework, demonstrations of the Munit Test Recorder and Mule Migration Assistant (MMA), and a Q&A session. The Munit Test Recorder allows automatically generating tests by recording API flows. MMA is a command line tool that assists in migrating Mule 3 applications to Mule 4, though manual adjustments are typically still required. The meetup aims to help developers learn about and apply these tools for building tests and migrating Mule applications.
Gr8conf EU 2013 Speed up your development: GroovyServ and Grails Improx PluginYasuharu Nakano
The document discusses how to speed up development of Groovy and Grails applications using GroovyServ and the Improx plugin. GroovyServ launches Groovy faster by pre-invoking it as a server. The Improx plugin allows running Grails tests and commands from an IDE by connecting to an interactive Grails shell via TCP/IP. This avoids restarting the JVM for each test and provides autocompletion. Demostrations show how these tools improve development workflow by making Groovy and test execution much faster.
This Slide talks about multithreading in python with sample code snippets.
Connect me at
https://nextsrini.blogspot.com/
https://www.youtube.com/channel/UCqIHkbuf1uGiN8QXwWX5dkQ
An activity represents a single screen in an Android application. Activities have lifecycles with states like active, paused, stopped. Fragments allow dividing an activity screen into multiple interactive regions and reuse fragments across activities. Fragments have their own lifecycles tied to their host activity. Developers can add fragments statically in XML layouts or programmatically using FragmentManager.
UI Interactions Testing with FlexMonkeyArul Kumaran
FlexMonkey is a testing framework for Flex applications that allows for automated testing of user interfaces. It captures tests like a functional tool but scripts them within FlexUnit, a unit testing framework for Flex. FlexMonkey is free, open source, and built on the Adobe Flex Automated Testing API. It handles Flex UI events without needing JavaScript or browser plugins by writing unit tests entirely in ActionScript.
This is an introduction to multithreading programming used by java, there is a small description that helps you to understand how it works, as we know java is a multithreaded programming language and its an important part to learn it if we are studying java . I hope this will help anyone who wants to learn about java.
Github Actions enables you to create custom software development lifecycle workflows directly in your Github repository. These workflows are made out of different tasks so-called actions that can be run automatically on certain events.
Flipkart.com is one of India's top 100 websites in terms of traffic. We use continuous deployment techniques to achieve quick deployments multiple times a day. Techniques and best practices we follow that we believe could be interesting to many others.
Describe synchronization techniques used by programmers who develop .pdfexcellentmobiles
Describe synchronization techniques used by programmers who develop applications for
LUBUNTU (LINUX)
Solution
Concurrency and locking: Synchronization methods are necessary when the property of
concurrency exists. Concurrency exists when two or more processes execute over the same time
period and potentially interact with one another. The Linux kernel supports concurrency in both
modes. The kernel itself is dynamic, and race conditions can be created in a number of ways. The
Linux kernel also supports multiprocessing known as symmetric multiprocessing (SMP).
Concurrency can occur on uniprocessor (UP) hosts where multiple threads share the same CPU
and preemption creates race conditions. Preemption is sharing the CPU transparently by
temporarily pausing one thread to allow another to execute. A race condition occurs when two or
more threads manipulate a shared data item and the result depends upon timing of the execution.
Concurrency also exists in multiprocessor (MP) machines, where threads executing
simultaneously in each processor share the same data. Note that in the MP case there is true
parallelism because the threads execute simultaneously. In the UP case, parallelism is created by
preemption. The difficulties of concurrency exist in both modes.
To combat the issue of race conditions, the concept of a critical section was created. A critical
section is a portion of code that is protected against multiple access. This portion of code can
manipulate shared data or a shared service (such as a hardware peripheral). Critical sections
operate on the principle of mutual exclusion.
Race condition Situation where simultaneous manipulation of a resource by two or more threads
causes inconsistent results.
Critical section Segment of code that coordinates access to a shared resource.
Mutual exclusion Property of software that ensures exclusive access to a shared resource.
Deadlock Special condition created by two or more processes and two or more resource locks
that keep processes from doing productive work.
Linux synchronization methods
Now that you have a little theory under your belt and an understanding of the problem to be
solved, let\'s look at the various ways that Linux supports concurrency and mutual exclusion. In
the early days, mutual exclusion was provided by disabling interrupts, but this form of locking is
inefficient (even though you can still find traces of it in the kernel). This method also doesn\'t
scale well and doesn\'t guarantee mutual exclusion on other processors.
The atomic operators are ideal for situations where the data you need to protect is simple,
such as a counter. While simple, the atomic API provides a number of operators for a variety of
situations. Here\'s a sample use of the API.
To declare an atomic variable, you simply declare a variable of type atomic_t. This structure
contains a single int element. Next, you ensure that your atomic variable is initialized using the
ATOMIC_INIT symbolic constant. In the case .
Puppet Camp Düsseldorf 2014: Continuously Deliver Your Puppet Code with Jenki...Puppet
Continuously Deliver Your Puppet Code with Jenkins, r10k and Git (Intermediate) - Toni Schmidbauer, IT Solutions at Spardat GmbH given at Puppet Camp Düsseldorf 2014
Puppet Camp Duesseldorf 2014: Toni Schmidbauer - Continuously deliver your pu...NETWAYS
At s-IT solutions we manage a diverse environment of about 1000 linux (redhat), solaris 10/11 and AIX hosts with the help of puppet open source.
In this talk we give a brief introduction of continuous delivery and explain how we manage our current puppet infrastructure with a focus on the deployment process. We introduce jenkins, a continuous integration server and how we use it to continuously deliver our puppet code base. We also explain how we use git and r10k to manage internal and external (github/forge) puppet modules.
Furthermore, we discuss current shortcomings of our setup and how we plan to improve.
Gogs application is a Version control System (VCS) software. It can also be used to version control Splunk Configuration. It is 100% open source by DigitalOcean. It also has webhook option to send payload to Splunk. Whenever an activity occurs in Gogs, it does a POST request with an event to the target forwarder of Splunk.
how to minimize the impact of flaky tests
Flakes aka tests that don’t behave deterministically, i.e. they fail sometimes and pass sometimes, are an ever recurring problem in software development. This is especially the sad reality when running e2e tests where a lot of components are involved. There are various reasons why a test can be flaky, however the impact can be as fatal as CI being loaded beyond capacity causing overly long feedback cycles or even users losing trust in CI itself.
We want to remove flakes as fast as possible to minimize the number of retests required. This leads to shorter time to merge, reduces CI user frustration, improves trust in CI, while at the same time it decreases the overall load for the CI system.
We start by generating a report of tests that have failed at least once inside a merged PR, meaning that in the end all tests have succeeded, thus flaky tests have been run inside CI. We then look at the report to separate flakes from real issues and forward the flakes to dev teams.
As a result retest numbers have gone down significantly over the last year.
After attending the session the user will have an idea of what our flake process is, how we exercise it and what the actual outcomes are.
The document discusses monitors, which are a synchronization mechanism used in operating systems. A monitor is a collection of shared variables and associated procedures that enforce mutual exclusion. Only one process can be active in a monitor at a time. Monitors were developed to make it easier to avoid deadlocks compared to other synchronization methods like semaphores. The document provides examples of how monitors can be used to solve common synchronization problems.
This document discusses different types of loops in Java programming: while, for, do-while, and enhanced for loops. It provides the syntax and flow for each loop type along with examples. The key loop types are:
- While loops repeat while a condition is true, testing at the start of each iteration.
- For loops iterate a specific number of times, with initialization, condition, and update sections.
- Do-while loops are like while loops but test the condition at the end, so the body executes at least once.
- Enhanced for loops iterate over collections/arrays, declaring a block variable to access each element.
The document contains interview questions and answers related to sections, control identification, modules, actions, parameters, and other concepts in Tosca automation testing. Key points include the different section types in Tosca, methods for identifying controls, types of modules, actions like verify and buffer, parameters like TCP and business parameters, and concepts like synchronization, libraries, and recovery scenarios.
Instant LAMP Stack with Vagrant and PuppetPatrick Lee
Do you enjoy installing and configuring Apache, PHP, and MySQL every time you reinstall your OS or switch to a new machine? Neither do I. And we never have to do it again. Vagrant can use the VirtualBox API and configuration defined in Puppet to spin up a development VM in a couple of minutes. And it's really easy to do. I'll start with the simplest possible example and work up to a cluster of VM's. Feel free to bring your laptop and follow along.
This document outlines the agenda for a meetup on MUnit and Mule migration. The agenda includes an introduction to MUnit testing framework, demonstrations of the Munit Test Recorder and Mule Migration Assistant (MMA), and a Q&A session. The Munit Test Recorder allows automatically generating tests by recording API flows. MMA is a command line tool that assists in migrating Mule 3 applications to Mule 4, though manual adjustments are typically still required. The meetup aims to help developers learn about and apply these tools for building tests and migrating Mule applications.
Gr8conf EU 2013 Speed up your development: GroovyServ and Grails Improx PluginYasuharu Nakano
The document discusses how to speed up development of Groovy and Grails applications using GroovyServ and the Improx plugin. GroovyServ launches Groovy faster by pre-invoking it as a server. The Improx plugin allows running Grails tests and commands from an IDE by connecting to an interactive Grails shell via TCP/IP. This avoids restarting the JVM for each test and provides autocompletion. Demostrations show how these tools improve development workflow by making Groovy and test execution much faster.
Best Digital Marketing Strategy Build Your Online Presence 2024.pptxpavankumarpayexelsol
This presentation provides a comprehensive guide to the best digital marketing strategies for 2024, focusing on enhancing your online presence. Key topics include understanding and targeting your audience, building a user-friendly and mobile-responsive website, leveraging the power of social media platforms, optimizing content for search engines, and using email marketing to foster direct engagement. By adopting these strategies, you can increase brand visibility, drive traffic, generate leads, and ultimately boost sales, ensuring your business thrives in the competitive digital landscape.
Discovering the Best Indian Architects A Spotlight on Design Forum Internatio...Designforuminternational
India’s architectural landscape is a vibrant tapestry that weaves together the country's rich cultural heritage and its modern aspirations. From majestic historical structures to cutting-edge contemporary designs, the work of Indian architects is celebrated worldwide. Among the many firms shaping this dynamic field, Design Forum International stands out as a leader in innovative and sustainable architecture. This blog explores some of the best Indian architects, highlighting their contributions and showcasing the most famous architects in India.
4. In a Verilog module, concurrent processes can be implemented using
multiple always blocks.
Suppose If we write 3 always blocks, it means 3 concurrent running
processes.
Class does not have always & initial block.
Fork, join is used to achieve concurrent running behavior in class.
It is non synthesizable.
INTRODUCTION
5. Types of Fork Join
1. Fork Join
2. Fork join Any
3. Fork Join none
6. Fork Join
Here all processes will run
concurrently.
Fork join will not complete/execute
until all processes completed.
7. Fork Join Any
Here all processes will run
concurrently.
Fork join will complete/execute if
any one of the processes gets
completed.
8. Here all processes will run
concurrently.
Fork join none will
complete/execute if any one of the
processes gets started .
Fork Join None
9. Wait Fork
Wait fork ;
In Fork join any by using wait
fork, tool will make sure that all
processes gets completed
10. Disable fork ;
In this if any fork gets
completed , then it will disable
another fork
Disable Fork