1/* $NetBSD: ntp_workimpl.h,v 1.5 2020/05/25 20:47:20 christos Exp $ */ 2 3/* 4 * ntp_workimpl.h - selects worker child implementation 5 */ 6#ifndef NTP_WORKIMPL_H 7#define NTP_WORKIMPL_H 8 9/* 10 * Some systems do not support fork() and don't have an alternate 11 * threads implementation of ntp_intres. Such systems are limited 12 * to using numeric IP addresses. 13 */ 14#if defined(SYS_WINNT) 15# define WORK_THREAD 16#elif defined(ISC_PLATFORM_USETHREADS) && \ 17 defined(HAVE_SEM_TIMEDWAIT) && \ 18 (defined(HAVE_GETCLOCK) || defined(HAVE_CLOCK_GETTIME)) 19# define WORK_THREAD 20# define WORK_PIPE 21#elif defined(VMS) || defined(SYS_VXWORKS) 22 /* empty */ 23#elif defined(HAVE_WORKING_FORK) 24# define WORK_FORK 25# define WORK_PIPE 26#endif 27 28#if defined(WORK_FORK) || defined(WORK_THREAD) 29# define WORKER 30#endif 31 32#endif /* !NTP_WORKIMPL_H */ 33