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  2. Thread safety - Wikipedia

    en.wikipedia.org/wiki/Thread_safety

    Thread safe, MT-safe: Use a mutex for every single resource to guarantee the thread to be free of race conditions when those resources are accessed by multiple threads simultaneously. Thread safety guarantees usually also include design steps to prevent or limit the risk of different forms of deadlocks , as well as optimizations to maximize ...

  3. NHibernate - Wikipedia

    en.wikipedia.org/wiki/NHibernate

    //Add a Customer to the datastore //'sessionFactory' is a thread-safe object built once per application lifetime (can take seconds to build) //based on configuration files which control how database tables are mapped to C# objects //(e.g. which property maps to which column in a database table) // //'session' is not thread safe and fast to ...

  4. Object pool pattern - Wikipedia

    en.wikipedia.org/wiki/Object_pool_pattern

    The following shows the basic code of the object pool design pattern implemented using C#. For brevity the properties of the classes are declared using C# 3.0 automatically implemented property syntax. These could be replaced with full property definitions for earlier versions of the language.

  5. Reentrancy (computing) - Wikipedia

    en.wikipedia.org/wiki/Reentrancy_(computing)

    Reentrancy is neither necessary nor sufficient for thread-safety in multi-threaded environments. In other words, a reentrant subroutine can be thread-safe, [1] but is not guaranteed to be [citation needed]. Conversely, thread-safe code need not be reentrant (see below for examples). Other terms used for reentrant programs include "sharable code ...

  6. Monitor (synchronization) - Wikipedia

    en.wikipedia.org/wiki/Monitor_(synchronization)

    While a thread is executing a method of a thread-safe object, it is said to occupy the object, by holding its mutex (lock). Thread-safe objects are implemented to enforce that at each point in time, at most one thread may occupy the object. The lock, which is initially unlocked, is locked at the start of each public method, and is unlocked at ...

  7. Concurrent computing - Wikipedia

    en.wikipedia.org/wiki/Concurrent_computing

    Concurrent components communicate by altering the contents of shared memory locations (exemplified by Java and C#). This style of concurrent programming usually needs the use of some form of locking (e.g., mutexes, semaphores, or monitors) to coordinate between threads. A program that properly implements any of these is said to be thread-safe.

  8. Double-checked locking - Wikipedia

    en.wikipedia.org/wiki/Double-checked_locking

    Thread A notices that the value is not initialized, so it obtains the lock and begins to initialize the value. Due to the semantics of some programming languages, the code generated by the compiler is allowed to update the shared variable to point to a partially constructed object before A has finished performing the initialization.

  9. Lazy initialization - Wikipedia

    en.wikipedia.org/wiki/Lazy_initialization

    Here is a dummy example in C#. ... This example is not thread-safe, see the talk page. Instead see the examples in Double-checked locking#Usage in Java.