rb_syswait        499 include/ruby/intern.h void rb_syswait(rb_pid_t pid);
rb_syswait       3251 io.c           	rb_syswait(fptr->pid);
rb_syswait       2178 process.c      #define proc_syswait (VALUE (*)(VALUE))rb_syswait
rb_syswait       2183 process.c          rb_syswait((int)pid);
rb_syswait       2334 process.c      		rb_syswait(pid);
rb_syswait       2703 process.c      	rb_syswait(status);