Thread safety

If multi-threading is enabled for the library, the function calls are reentrant and can be called from different threads.

The define below controls weather multi-threading support is enabled , set either 1 or 0. There are system specific defaults for this, but this can be overridden by setting compiler define.

#define OSAL_MULTITHREAD_SUPPORT 1

200303, updated 18.5.2019/pekka