Convenience wrapper function for thread_pool_control()
#include <sys/iofunc.h> #include <sys/dispatch.h> int thread_pool_limits( thread_pool_t * pool, int lowater, int hiwater, int maximum, int increment, unsigned flags );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The thread_pool_limits() function is a wrapper function for thread_pool_control(). If the value of lowater, hiwater, maximum or increment is ≥0 then that value is adjusted in the thread pool according to the handle pool.
If you don't set THREAD_POOL_CONTROL_NONBLOCK, the upper and lower bounds for waiting are:
|Having several threads call this function with the same thread pool handle isn't recommended.|
-1 if an error occurs (errno is set).
thread_pool_control(), thread_pool_create(), thread_pool_destroy(), thread_pool_start()
Processes and Threads chapter of Getting Started with QNX Neutrino