Part of my program does changes to the UI and that needs to be done on the main thread, but I want to do the rest on a background thread. Is it safe to enter an OCaml program from C using two different threads provided I’m careful not to enter it from thread A while it’s executing on thread B?
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AFAIK it should be as long as you follow the caml_{release,acquire}_runtime_system dance.
You need to make sure however that the threads are known to the runtime system using caml_c_thread_register().
See the manual for more details.
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