Thursday, May 3, 2012

c^c++ thread libraries, as of 2013

Update -- [[understanding and using c pointers]] c2013 says that C11 standard implements threading, but it's not widely supported as of 2013. Among the supported C threading libraries, pthreads is most widely supported.

pthreads -- not much change since the beginning.

Boost, roguewave and other C++ thread libraries are often (sugar coated) class libraries over C-level thread libraries. On a given platform, if there is pthreads and another thread library at C level, then the class library usually provides a consistent OO wrapper to hide their differences. I feel there will never be significant capabilities added to the c++ library and not added to the underlying C library. Here's my reasoning --

Like any system call and standard system library, thread libraries are designed to support multiple languages and diverse applications. Many languages and many essential applications are still written in C not C++. Multi-threaded or not, C is the true common denominator, not c++. (All unix thread libraries I know are C-based). It's inconceivable for a thread library vendor with new "ideas" to add them at the c++ layer rather than the underlying C-layer.

http://www.roguewave.com/portals/0/products/sourcepro/docs/12.0/html/threadsug/2-1.html says --

Many of today's operating systems now provide support for multithreading and synchronization. This support takes the form of a low-level procedural API accessed as C language functions.

http://www.roguewave.com/portals/0/products/sourcepro/docs/12.0/html/threadsug/booktoc.html is a detailed TOC

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