ntp_workimpl.h revision 285612 
1/*
2 * ntp_workimpl.h - selects worker child implementation
3 */
4#ifndef NTP_WORKIMPL_H
5#define NTP_WORKIMPL_H
6
7/*
8 * Some systems do not support fork() and don't have an alternate
9 * threads implementation of ntp_intres.  Such systems are limited
10 * to using numeric IP addresses.
11 */
12#if defined(SYS_WINNT)
13# define WORK_THREAD
14#elif defined(ISC_PLATFORM_USETHREADS) && \
15      defined(HAVE_SEM_TIMEDWAIT) && \
16      (defined(HAVE_GETCLOCK) || defined(HAVE_CLOCK_GETTIME))
17# define WORK_THREAD
18# define WORK_PIPE
19#elif defined(VMS) || defined(SYS_VXWORKS)
20  /* empty */
21#elif defined(HAVE_WORKING_FORK)
22# define WORK_FORK
23# define WORK_PIPE
24#endif
25
26#if defined(WORK_FORK) || defined(WORK_THREAD)
27# define WORKER
28#endif
29
30#endif	/* !NTP_WORKIMPL_H */
31