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| author | Thomas Quinot <quinot@adacore.com> | 2007-06-06 12:48:51 +0200 |
|---|---|---|
| committer | Arnaud Charlet <charlet@gcc.gnu.org> | 2007-06-06 12:48:51 +0200 |
| commit | 4ce7ff881ab27cda15543985de467fd6c9611676 (patch) | |
| tree | 21c8578817abfa775cbe5d7fee601745c1d48134 /gcc/ada/gsocket.h | |
| parent | 37000abae45e881eaeaf0ca40f043a7f5f55e924 (diff) | |
| download | gcc-4ce7ff881ab27cda15543985de467fd6c9611676.zip gcc-4ce7ff881ab27cda15543985de467fd6c9611676.tar.gz gcc-4ce7ff881ab27cda15543985de467fd6c9611676.tar.bz2 | |
g-soccon-darwin.ads, [...]: Add new constant Thread_Blocking_IO...
2007-04-20 Thomas Quinot <quinot@adacore.com>
* g-soccon-darwin.ads, gen-soccon.c: Add new constant
Thread_Blocking_IO, always True by default, set False on a per-runtime
basis.
Add Windows-specific constants
Add new constant Need_Netdb_Buffer.
Add new macros to indicate whether getXXXbyYYY is thread safe and, if
not, whether to use getXXXbyYYY_r.
* gsocket.h: Add new constant Need_Netdb_Buffer.
Add new macros to indicate whether getXXXbyYYY is thread safe and, if
not, whether to use getXXXbyYYY_r.
From-SVN: r125466
Diffstat (limited to 'gcc/ada/gsocket.h')
| -rw-r--r-- | gcc/ada/gsocket.h | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/gcc/ada/gsocket.h b/gcc/ada/gsocket.h index a380788..7df7ea0 100644 --- a/gcc/ada/gsocket.h +++ b/gcc/ada/gsocket.h @@ -6,7 +6,7 @@ * * * C Header File * * * - * Copyright (C) 2004-2005, Free Software Foundation, Inc. * + * Copyright (C) 2004-2006, Free Software Foundation, Inc. * * * * GNAT is free software; you can redistribute it and/or modify it under * * terms of the GNU General Public License as published by the Free Soft- * @@ -146,3 +146,33 @@ #include <sys/ioctl.h> #include <netdb.h> #endif + +/* + * Handling of gethostbyname, gethostbyaddr, getservbyname and getservbyport + * ========================================================================= + * + * The default implementation of GNAT.Sockets.Thin requires that these + * operations be either thread safe, or that a reentrant version getXXXbyYYY_r + * be provided. In both cases, socket.c provides a __gnat_safe_getXXXbyYYY + * function with the same signature as getXXXbyYYY_r. If the operating + * system version of getXXXbyYYY is thread safe, the provided auxiliary + * buffer argument is unused and ignored. + * + * Target specific versions of GNAT.Sockets.Thin for platforms that can't + * fulfill these requirements must provide their own protection mechanism + * in Safe_GetXXXbyYYY, and if they require GNAT.Sockets to provide a buffer + * to this effect, then we need to set Need_Netdb_Buffer here (case of + * VxWorks and VMS). + */ + +#if defined (_AIX) || defined (__FreeBSD__) || defined (__hpux__) || defined (__osf__) || defined (_WIN32) || defined (__APPLE__) +# define HAVE_THREAD_SAFE_GETxxxBYyyy 1 +#elif defined (sgi) || defined (linux) || (defined (sun) && defined (__SVR4) && !defined (__vxworks)) +# define HAVE_GETxxxBYyyy_R 1 +#endif + +#if defined (HAVE_GETxxxBYyyy_R) || !defined (HAVE_THREAD_SAFE_GETxxxBYyyy) +# define Need_Netdb_Buffer 1 +#else +# define Need_Netdb_Buffer 0 +#endif |