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pthreads defines a set of C programming language types, functions and constants. It is implemented with a pthread.h header and a thread library. There are around 100 threads procedures, all prefixed pthread_ and they can be categorized into five groups: Thread management – creating, joining threads etc. Mutexes; Condition variables
Like LinuxThreads, NPTL is a 1:1 threads library. Threads created by the library (via pthread_create) correspond one-to-one with schedulable entities in the kernel (processes, in the Linux case).
A concurrent programming language is defined as one which uses the concept of simultaneously executing processes or threads of execution as a means of structuring a program. A parallel language is able to express programs that are executable on more than one processor.
Thus, a skeleton can have several templates each optimized for a different architecture. A template implements a skeleton on a specific architecture and provides a parametric process graph with a performance model. The performance model can then be used to decide program transformations which can lead to performance optimizations. [66]
The various languages and libraries offering a PGAS memory model differ widely in other details, such as the base programming language and the mechanisms used to express parallelism. Many PGAS systems combine the advantages of a SPMD programming style for distributed memory systems (as employed by MPI ) with the data referencing semantics of ...
[[Category:Programming language templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Programming language templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
In Synon/2, developers use a specialized language to define an application's data model and the rules that ensure its integrity. They then select from a set of around 30 pre-built program design templates which perform edit, display and print functions in full screen, multi-line and transaction (full screen header above a multi-line detail) modes.
The TlsGetValue and TlsSetValue functions are then used to read and write a memory address to a thread-local variable identified by the TLS slot index. TlsSetValue only affects the variable for the current thread. The TlsFree function can be called to release the TLS slot index. There is a Win32 Thread Information Block for each thread.