Is JMS session thread safe?
1. Re: Is JMS connection thread safe? Yes, you can share a JMS connection across the threads.
When should I worry about thread safety?
If you pass in an object to the method and the method mutates the object and before the method completes you call the same method again on a different thread but with the same object, then you have a problem.
What is considered thread safe?
“A class is thread-safe if it behaves correctly when accessed from multiple threads, regardless of the scheduling or interleaving of the execution of those threads by the runtime environment, and with no additional synchronization or other coordination on the part of the calling code.”
Are GET methods thread safe?
4 Answers. If a method (instance or static) only references variables scoped within that method then it is thread safe because each thread has its own stack: In this instance, multiple threads could call ThreadSafeMethod concurrently without issue.
Is Activemq thread safe?
1 specification, it calls out clearly which objects are valid to use in multiple threads and which are not. Namely the Session, MessageConsumer and MessageProducer are considered unsafe to share amongst threads.
What is difference between thread-safe and non thread-safe?
Non-thread-safe: It does not check the safety of the threads which makes it faster to run but at the same time, it becomes more unstable and crashes very frequently. It refers to a single thread only builds.
Is C++ thread-safe?
The following thread safety rules apply to all classes in the C++ Standard Library—this includes shared_ptr , as described below. It’s safe to read and write to one instance of a type even if another thread is reading or writing to a different instance of the same type.
What is C++ thread-safe?
An object is thread-safe for reading from multiple threads. For example, given an object A, it is safe to read A from thread 1 and from thread 2 simultaneously. If an object is being written to by one thread, then all reads and writes to that object on the same or other threads must be protected.
How can you tell if something is thread-safe?
To test if the combination of two methods, a and b, is thread-safe, call them from two different threads. Put the complete test in a while loop iterating over all thread interleavings with the help from the class AllInterleavings from vmlens. Test if the result is either an after b or b after a.
How do I know if a class is thread-safe?
3 Answers. For a standard Java SE class, the best way to know whether or not the class is thread-safe is to carefully read its documentation. Always read both the class documentation and the method documentation. If either say it’s not synchronized or not thread-safe, you know it’s not thread-safe.
Is REST API thread-safe?
REST APIs are naturally multi-thread, once they can execute multiple requests at the same time. Therefore, every time you put a thread to wait for something synchronously you are wasting CPU time because that thread could be being used to handle another request.
Can a JMS queue have multiple consumers?
The JMS 2.0 specification introduces shared subscriptions, which allows messages from a topic subscription to be shared among multiple consumers. Each message from the subscription is delivered to only one of the consumers on that subscription.
Is the session thread safe, are set / get attribute thread?
The session is not thread safe and neither the get not the set methods are guaranteed to be thread safe. In general in a servlet container you should assume to be in a multi threaded environment and no provided tooling is safe. This also goes for the objects you store in the session.
Why is a HttpSession thread safe in Java?
The Developer has the responsibility for threadsafe access to the attribute objects themselves. This will protect the attribute collection inside the HttpSession object from concurrent access, eliminating the opportunity for an application to cause that collection to become corrupted.
Are there two threads accessing the same session?
Different clients will have different threads and each one will have its own Session. As Eddie points out, one situation where you may face two thread accessing the same session is two ajax calls are attempting to modify the same session attribute. Otherwise you won’t have problems.
Is the get not the set method thread safe?
Otherwise you won’t have problems. The session is not thread safe and neither the get not the set methods are guaranteed to be thread safe. In general in a servlet container you should assume to be in a multi threaded environment and no provided tooling is safe. This also goes for the objects you store in the session.