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include/boost/config/platform/vxworks.hpp  view on Meta::CPAN

#define ___unused __attribute__((unused))
#else
#define ___unused
#endif

// Fake symlink handling by dummy functions:
inline int symlink(const char* path1 ___unused, const char* path2 ___unused){
  // vxWorks has no symlinks -> always return an error!
  errno = EACCES;
  return -1;
}

inline ssize_t readlink(const char* path1 ___unused, char* path2 ___unused, size_t size ___unused){
  // vxWorks has no symlinks -> always return an error!
  errno = EACCES;
  return -1;
}

#if (_WRS_VXWORKS_MAJOR < 7)

inline int gettimeofday(struct timeval *tv, void * /*tzv*/) {
  struct timespec ts;
  clock_gettime(CLOCK_MONOTONIC, &ts);
  tv->tv_sec  = ts.tv_sec;
  tv->tv_usec = ts.tv_nsec / 1000;
  return 0;
}
#endif

#ifdef __cplusplus
} // extern "C"
#endif

/* 
 * moved to os/utils/unix/freind_h/times.h in VxWorks 7
 * to avoid conflict with MPL operator times
 */
#if (_WRS_VXWORKS_MAJOR < 7) 
#ifdef __cplusplus

// vxWorks provides neither struct tms nor function times()!
// We implement an empty dummy-function, simply setting the user
// and system time to the half of thew actual system ticks-value
// and the child user and system time to 0.
// Rather ugly but at least it suppresses compiler errors...
// Unfortunately, this of course *does* have an severe impact on
// dependant libraries, actually this is chrono only! Here it will
// not be possible to correctly use user and system times! But
// as vxWorks is lacking the ability to calculate user and system
// process times there seems to be no other possible solution.
struct tms{
  clock_t tms_utime;  // User CPU time
  clock_t tms_stime;  // System CPU time
  clock_t tms_cutime; // User CPU time of terminated child processes
  clock_t tms_cstime; // System CPU time of terminated child processes
};


 inline clock_t times(struct tms *t){
  struct timespec ts;
  clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
  clock_t ticks(static_cast<clock_t>(static_cast<double>(ts.tv_sec)  * CLOCKS_PER_SEC +
                                     static_cast<double>(ts.tv_nsec) * CLOCKS_PER_SEC / 1000000.0));
  t->tms_utime  = ticks/2U;
  t->tms_stime  = ticks/2U;
  t->tms_cutime = 0; // vxWorks is lacking the concept of a child process!
  t->tms_cstime = 0; // -> Set the wait times for childs to 0
  return ticks;
}


namespace std {
    using ::times;
}
#endif // __cplusplus
#endif // _WRS_VXWORKS_MAJOR < 7


#ifdef __cplusplus
extern "C" void 	bzero	    (void *, size_t);    // FD_ZERO uses bzero() but doesn't include strings.h

// Put the selfmade functions into the std-namespace, just in case
namespace std {
# ifdef __RTP__
    using ::getrlimit;
    using ::setrlimit;
# endif
  using ::truncate;
  using ::symlink;
  using ::readlink;
#if (_WRS_VXWORKS_MAJOR < 7)  
    using ::gettimeofday;
#endif  
}
#endif // __cplusplus

// Some more macro-magic:
// vxWorks-around: Some functions are not present or broken in vxWorks
//                 but may be patched to life via helper macros...

// Include signal.h which might contain a typo to be corrected here
#include <signal.h>
#if (_WRS_VXWORKS_MAJOR < 7)
#define getpagesize()    sysconf(_SC_PAGESIZE)         // getpagesize is deprecated anyway!
inline int lstat(p, b) { return stat(p, b); }  // lstat() == stat(), as vxWorks has no symlinks!
#endif
#ifndef S_ISSOCK
#  define S_ISSOCK(mode) ((mode & S_IFMT) == S_IFSOCK) // Is file a socket?
#endif
#ifndef FPE_FLTINV
#  define FPE_FLTINV     (FPE_FLTSUB+1)                // vxWorks has no FPE_FLTINV, so define one as a dummy
#endif
#if !defined(BUS_ADRALN) && defined(BUS_ADRALNR)
#  define BUS_ADRALN     BUS_ADRALNR                   // Correct a supposed typo in vxWorks' <signal.h>
#endif
typedef int              locale_t;                     // locale_t is a POSIX-extension, currently not present in vxWorks!

// #include boilerplate code:
#include <boost/config/detail/posix_features.hpp>

// vxWorks lies about XSI conformance, there is no nl_types.h: