thread

Thread pragma

A proc that is executed as a new thread of execution should be marked by the thread pragma for reasons of readability. The compiler checks for violations of the no heap sharing restriction{.interpreted-text role="idx"}: This restriction implies that it is invalid to construct a data structure that consists of memory allocated from different (thread-local) heaps.

A thread proc is passed to createThread or spawn and invoked indirectly; so the thread pragma implies procvar.