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libcares/setup_once.h  view on Meta::CPAN

#define ISBLANK(x)  (int)((((unsigned char)x) == ' ') || \
                          (((unsigned char)x) == '\t'))

#define TOLOWER(x)  (tolower((int)  ((unsigned char)x)))


/*
 * 'bool' stuff compatible with HP-UX headers.
 */

#if defined(__hpux) && !defined(HAVE_BOOL_T)
   typedef int bool;
#  define false 0
#  define true 1
#  define HAVE_BOOL_T
#endif


/*
 * 'bool' exists on platforms with <stdbool.h>, i.e. C99 platforms.
 * On non-C99 platforms there's no bool, so define an enum for that.
 * On C99 platforms 'false' and 'true' also exist. Enum uses a
 * global namespace though, so use bool_false and bool_true.
 */

#ifndef HAVE_BOOL_T
  typedef enum {
      bool_false = 0,
      bool_true  = 1
  } bool;

/*
 * Use a define to let 'true' and 'false' use those enums.  There
 * are currently no use of true and false in libcurl proper, but
 * there are some in the examples. This will cater for any later
 * code happening to use true and false.
 */
#  define false bool_false
#  define true  bool_true
#  define HAVE_BOOL_T
#endif


/*
 * Redefine TRUE and FALSE too, to catch current use. With this
 * change, 'bool found = 1' will give a warning on MIPSPro, but
 * 'bool found = TRUE' will not. Change tested on IRIX/MIPSPro,
 * AIX 5.1/Xlc, Tru64 5.1/cc, w/make test too.
 */

#ifndef TRUE
#define TRUE true
#endif
#ifndef FALSE
#define FALSE false
#endif


/*
 * Macro WHILE_FALSE may be used to build single-iteration do-while loops,
 * avoiding compiler warnings. Mostly intended for other macro definitions.
 */

#define WHILE_FALSE  while(0)

#if defined(_MSC_VER) && !defined(__POCC__)
#  undef WHILE_FALSE
#  if (_MSC_VER < 1500)
#    define WHILE_FALSE  while(1, 0)
#  else
#    define WHILE_FALSE \
__pragma(warning(push)) \
__pragma(warning(disable:4127)) \
while(0) \
__pragma(warning(pop))
#  endif
#endif


/*
 * Typedef to 'int' if sig_atomic_t is not an available 'typedefed' type.
 */

#ifndef HAVE_SIG_ATOMIC_T
typedef int sig_atomic_t;
#define HAVE_SIG_ATOMIC_T
#endif


/*
 * Convenience SIG_ATOMIC_T definition
 */

#ifdef HAVE_SIG_ATOMIC_T_VOLATILE
#define SIG_ATOMIC_T static sig_atomic_t
#else
#define SIG_ATOMIC_T static volatile sig_atomic_t
#endif


/*
 * Default return type for signal handlers.
 */

#ifndef RETSIGTYPE
#define RETSIGTYPE void
#endif


/*
 * Macro used to include code only in debug builds.
 */

#ifdef DEBUGBUILD
#define DEBUGF(x) x
#else
#define DEBUGF(x) do { } WHILE_FALSE
#endif


/*
 * Macro used to include assertion code only in debug builds.
 */

#if defined(DEBUGBUILD) && defined(HAVE_ASSERT_H)
#define DEBUGASSERT(x) assert(x)
#else
#define DEBUGASSERT(x) do { } WHILE_FALSE
#endif


/*
 * Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno
 * (or equivalent) on this platform to hide platform details to code using it.
 */

#ifdef USE_WINSOCK
#define SOCKERRNO         ((int)WSAGetLastError())
#define SET_SOCKERRNO(x)  (WSASetLastError((int)(x)))
#else
#define SOCKERRNO         (errno)
#define SET_SOCKERRNO(x)  (errno = (x))
#endif


/*
 * Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno
 * (or equivalent) on this platform to hide platform details to code using it.
 */

#if defined(WIN32) && !defined(WATT32)
#define ERRNO         ((int)GetLastError())
#define SET_ERRNO(x)  (SetLastError((DWORD)(x)))
#else
#define ERRNO         (errno)
#define SET_ERRNO(x)  (errno = (x))
#endif


/*
 * Portable error number symbolic names defined to Winsock error codes.
 */

#ifdef USE_WINSOCK
#undef  EBADF            /* override definition in errno.h */
#define EBADF            WSAEBADF
#undef  EINTR            /* override definition in errno.h */
#define EINTR            WSAEINTR
#undef  EINVAL           /* override definition in errno.h */
#define EINVAL           WSAEINVAL
#undef  EWOULDBLOCK      /* override definition in errno.h */
#define EWOULDBLOCK      WSAEWOULDBLOCK
#undef  EINPROGRESS      /* override definition in errno.h */
#define EINPROGRESS      WSAEINPROGRESS
#undef  EALREADY         /* override definition in errno.h */
#define EALREADY         WSAEALREADY
#undef  ENOTSOCK         /* override definition in errno.h */
#define ENOTSOCK         WSAENOTSOCK
#undef  EDESTADDRREQ     /* override definition in errno.h */
#define EDESTADDRREQ     WSAEDESTADDRREQ
#undef  EMSGSIZE         /* override definition in errno.h */
#define EMSGSIZE         WSAEMSGSIZE
#undef  EPROTOTYPE       /* override definition in errno.h */
#define EPROTOTYPE       WSAEPROTOTYPE
#undef  ENOPROTOOPT      /* override definition in errno.h */
#define ENOPROTOOPT      WSAENOPROTOOPT
#undef  EPROTONOSUPPORT  /* override definition in errno.h */
#define EPROTONOSUPPORT  WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT  WSAESOCKTNOSUPPORT
#undef  EOPNOTSUPP       /* override definition in errno.h */
#define EOPNOTSUPP       WSAEOPNOTSUPP
#define EPFNOSUPPORT     WSAEPFNOSUPPORT
#undef  EAFNOSUPPORT     /* override definition in errno.h */
#define EAFNOSUPPORT     WSAEAFNOSUPPORT
#undef  EADDRINUSE       /* override definition in errno.h */
#define EADDRINUSE       WSAEADDRINUSE
#undef  EADDRNOTAVAIL    /* override definition in errno.h */
#define EADDRNOTAVAIL    WSAEADDRNOTAVAIL
#undef  ENETDOWN         /* override definition in errno.h */
#define ENETDOWN         WSAENETDOWN
#undef  ENETUNREACH      /* override definition in errno.h */
#define ENETUNREACH      WSAENETUNREACH
#undef  ENETRESET        /* override definition in errno.h */
#define ENETRESET        WSAENETRESET
#undef  ECONNABORTED     /* override definition in errno.h */
#define ECONNABORTED     WSAECONNABORTED
#undef  ECONNRESET       /* override definition in errno.h */
#define ECONNRESET       WSAECONNRESET
#undef  ENOBUFS          /* override definition in errno.h */
#define ENOBUFS          WSAENOBUFS
#undef  EISCONN          /* override definition in errno.h */
#define EISCONN          WSAEISCONN
#undef  ENOTCONN         /* override definition in errno.h */
#define ENOTCONN         WSAENOTCONN
#define ESHUTDOWN        WSAESHUTDOWN
#define ETOOMANYREFS     WSAETOOMANYREFS
#undef  ETIMEDOUT        /* override definition in errno.h */
#define ETIMEDOUT        WSAETIMEDOUT
#undef  ECONNREFUSED     /* override definition in errno.h */
#define ECONNREFUSED     WSAECONNREFUSED
#undef  ELOOP            /* override definition in errno.h */
#define ELOOP            WSAELOOP
#ifndef ENAMETOOLONG     /* possible previous definition in errno.h */
#define ENAMETOOLONG     WSAENAMETOOLONG
#endif
#define EHOSTDOWN        WSAEHOSTDOWN
#undef  EHOSTUNREACH     /* override definition in errno.h */
#define EHOSTUNREACH     WSAEHOSTUNREACH
#ifndef ENOTEMPTY        /* possible previous definition in errno.h */
#define ENOTEMPTY        WSAENOTEMPTY
#endif
#define EPROCLIM         WSAEPROCLIM
#define EUSERS           WSAEUSERS
#define EDQUOT           WSAEDQUOT
#define ESTALE           WSAESTALE
#define EREMOTE          WSAEREMOTE
#endif


/*
 *  Actually use __32_getpwuid() on 64-bit VMS builds for getpwuid()
 */

#if defined(__VMS) && \
    defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64)
#define getpwuid __32_getpwuid
#endif


/*
 * Macro argv_item_t hides platform details to code using it.
 */

#ifdef __VMS
#define argv_item_t  __char_ptr32
#else
#define argv_item_t  char *
#endif


/*
 * We use this ZERO_NULL to avoid picky compiler warnings,
 * when assigning a NULL pointer to a function pointer var.
 */

#define ZERO_NULL 0


#endif /* __SETUP_ONCE_H */