#define SIGNAL_ERRORS \
PARA_ERROR(SIGNAL_SIG_ERR, "signal() retured SIG_ERR"), \
PARA_ERROR(SIGNAL_READ, "read error from signal pipe"), \
- PARA_ERROR(WAITPID, "waitpid error"), \
- PARA_ERROR(SIGNAL_PIPE, "failed to setup signal pipe"), \
#define STRING_ERRORS \