I have seen code that uses pthread
to write multi-threaded programs in C++ and other codes that use the std::thread
library. What is the advantage of using the thread library instead of pthread
?
The std::thread library is implemented on top of pthreads in an environment supporting pthreads (for example: libstdc++).
On the other hand, OpenMP is much higher level, is more portable and doesn't limit you to using C. It's also much more easily scaled than pthreads. One specific example of this is OpenMP's work-sharing constructs, which let you divide work across multiple threads with relative ease.
std::thread Threads allow multiple functions to execute concurrently. std::thread objects may also be in the state that does not represent any thread (after default construction, move from, detach, or join), and a thread of execution may not be associated with any thread objects (after detach).
Thread functions in C/C++ In a Unix/Linux operating system, the C/C++ languages provide the POSIX thread(pthread) standard API(Application program Interface) for all thread related functions. It allows us to create multiple threads for concurrent process flow.
There are multiple adavantages. Listing those, not neccessarily in the order of importance.
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