Simple and easy-to-use conditional critical regions (CCR) with pthreads in C.

CCR is a high-level synchronization construct with the form

region R when C do S

where R is the region's name, C is a condition and S the critical section.

The above statement is translated to

Enter region R
Block current thread while condition C is false
Enter critical section S (when condition C becomes true)
Execute all code in critical section S
Leave S
Leave R

A CCR guarantees mutual exclusion and fairness (no starvation) when checking whether condition C is true or not, and when executing the code in critical section S.

Supported platforms are Linux, OSX and Windows (only tested with mingw and libwinpthread), but it can be used anywhere where there's support for pthreads.

The library comes in two flavors: a macro-only implementation that works simply by including the header file ccr.h, and a regular library ccr.c that can be compiled statically, and interfaced with, using the library API.

Documentation and tutorials here.

Various synchronization problems solved with libccr can be found on the folder examples. These make use of POSIX APIs like strerror_r, and VT100 terminal color codes, so they might not compile everywhere.

See LICENSE