Hello, Juraj Variny writes:
Hello,
can you please tell me how to:
1. Initialize lisp environment in a thread that was already created by C/C++ app? Is it possible for it to share existing lisp environment?
There is an example in examples/embed directory (file hello.c). What do you mean by sharing an existing lisp environment? cl_boot creates an environment for this instance.
2. Is accessing and modification of the shared lisp environment from a new thread made by (mp:process-run-function) threadsafe? For example I am running swank this way, is this a safe practice?
It is meant to be. Any reproducible bug should be reported here: https://gitlab.com/embeddable-common-lisp/ecl/issues/ . I'm using swank from the separate thread in ecl-android and I didn't encounter problems with that. ECL's swank backend contains in comment some hint regarding the thread safety (not sure though, how up-to-date it is): ;; While ECL does provide threads, some parts of it are not ;; thread-safe (2010-02-23), including the compiler and CLOS. it is something I want to investigate. I'm currently working on something else in the compiler though.
3. In the environment where only ECL is garbage collected: Calling ecl_base_string_pointer_safe(si_copy_to_simple_base_string(obj)) means that resulting C string will be eventually garbage collected?
Yes.
4. Likewise (ffi:c-inline () () :cstring "...") returns the value via ecl_cstring_to_base_string_or_nil() which causes trouble when C side deallocates it, I presume?
Yes.
Regards,
Juraj
Best reagrds, Daniel -- Daniel Kochmański ;; aka jackdaniel | Poznań, Poland TurtleWare - Daniel Kochmański | www.turtleware.eu "Be the change that you wish to see in the world." - Mahatma Gandhi