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Full Discussion: struct timespec in ANSI C
Top Forums Programming struct timespec in ANSI C Post 30781 by trido on Monday 28th of October 2002 04:53:49 AM
Old 10-28-2002
Quote:
Originally posted by Perderabo
The only solaris 8 system that I have access to has no compiler, so I can't test this. But looking at the include files, <time.h> will include <sys/time_impl.h> depending on what symbols you set. <sys/time_impl.h> defines timespec.

My guess is that you are defining symbols that are removing non-posix and/or non-ansi-c definitions from the namespace. And the header files are not handling your selected options in a robust manner. If you are getting a compile error and you picked an legal combination of symbols, then the header files may have a minor bug. As a work-around, maybe you can define timespec in a typedef to silence the compiler.
Thanks for the advice Perderabo - I think you're right. I'm going through most of my definitions ATM to make sure there are no conflicts.

What makes me think you're right is that compiling without the '-Xc' switch (ANSI C conformance in Sun CC) leads to no warnings. Certainly an interesting one.
 

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LEARN ABOUT NETBSD

timespeccmp

TIMERADD(3)						   BSD Library Functions Manual 					       TIMERADD(3)

NAME

     timeradd -- operations on time structure

SYNOPSIS

     #include <sys/time.h>

     void
     timeradd(struct timeval *a, struct timeval *b, struct timeval *res);

     void
     timersub(struct timeval *a, struct timeval *b, struct timeval *res);

     void
     timerclear(struct timeval *tv);

     int
     timerisset(struct timeval *tv);

     int
     timercmp(struct timeval *a, struct timeval *b, CMP);

     void
     timespecadd(struct timespec *a, struct timespec *b, struct timespec *res);

     void
     timespecsub(struct timespec *a, struct timespec *b, struct timespec *res);

     void
     timespecclear(struct timespec *ts);

     int
     timespecisset(struct timespec *ts);

     int
     timespeccmp(struct timespec *a, struct timespec b, CMP);

DESCRIPTION

     These macros are provided for manipulating the timeval and timespec structures described in timeval(3).

     The timeradd() and timespecadd() macros add the time information stored in a to b, storing the result in res.  With timeradd() the results
     are simplified such that the value of res->tv_usec is always less than 1,000,000 (1 second).  With timespecadd() the res->tv_nsec member of
     struct timespec is always less than 1,000,000,000.

     The timersub() and timespecsub() macros subtract the time information stored in b from a and store the resulting structure in res.

     The timerclear() and timespecclear() macros initialize the structures to midnight (0 hour) January 1st, 1970 (the Epoch).	In other words,
     they set the members of the structure to zero.

     The timerisset() and timespecisset() macros return true if the input structure is set to any time value other than the Epoch.

     The timercmp() and timespeccmp() macros compare a to b using the comparison operator given in CMP.  The result of the comparison is returned.

SEE ALSO

     timeval(3)

HISTORY

     The timeradd() family of macros first appeared in NetBSD 1.1.  These were later ported to FreeBSD 2.2.6.  The timespec() family of macros
     first appeared in NetBSD 1.2.

BSD
								   June 7, 2010 							       BSD
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