rb_syswait        643 include/ruby/intern.h void rb_syswait(rb_pid_t pid);
rb_syswait       3159 process.c      #define proc_syswait (VALUE (*)(VALUE))rb_syswait
rb_syswait       3164 process.c          rb_syswait((int)pid);
rb_syswait       3639 process.c                  rb_syswait(pid);