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ntp_workimpl.h revision 1.1.1.2 
      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