ruby_thread_has_gvl_p  423 gc.c               if (ruby_thread_has_gvl_p()) {
ruby_thread_has_gvl_p  568 gc.c               if (ruby_thread_has_gvl_p()) {
ruby_thread_has_gvl_p  591 gc.c               if (ruby_thread_has_gvl_p()) {
ruby_thread_has_gvl_p  592 vm_core.h      int ruby_thread_has_gvl_p(void);