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Refactor configure script detection of functions used to set sockets into

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non-blocking mode, and decouple function detection from function capability.
This commit is contained in:
Yang Tse
2008-11-13 18:56:56 +00:00
parent 3c2da5eae1
commit 65cafbe109
8 changed files with 891 additions and 189 deletions
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ares_process.c
+18 -35
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@@ -805,68 +805,51 @@ void ares__send_query(ares_channel channel, struct query *query,
static int setsocknonblock(ares_socket_t sockfd, /* operate on this */
int nonblock /* TRUE or FALSE */)
{
#undef SETBLOCK
#define SETBLOCK 0
#ifdef HAVE_O_NONBLOCK
#if defined(USE_BLOCKING_SOCKETS)
return 0; /* returns success */
#elif defined(HAVE_FCNTL_O_NONBLOCK)
/* most recent unix versions */
int flags;
flags = fcntl(sockfd, F_GETFL, 0);
if (FALSE != nonblock)
return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
else
return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
#undef SETBLOCK
#define SETBLOCK 1
#endif
#if defined(HAVE_FIONBIO) && (SETBLOCK == 0)
#elif defined(HAVE_IOCTL_FIONBIO)
/* older unix versions */
int flags;
flags = nonblock;
return ioctl(sockfd, FIONBIO, &flags);
#undef SETBLOCK
#define SETBLOCK 2
#endif
#if defined(HAVE_IOCTLSOCKET) && (SETBLOCK == 0)
#elif defined(HAVE_IOCTLSOCKET_FIONBIO)
#ifdef WATT32
char flags;
#else
/* Windows? */
/* Windows */
unsigned long flags;
#endif
flags = nonblock;
return ioctlsocket(sockfd, FIONBIO, &flags);
#undef SETBLOCK
#define SETBLOCK 3
#endif
#if defined(HAVE_IOCTLSOCKET_CASE) && (SETBLOCK == 0)
/* presumably for Amiga */
#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
/* Amiga */
return IoctlSocket(sockfd, FIONBIO, (long)nonblock);
#undef SETBLOCK
#define SETBLOCK 4
#endif
#if defined(HAVE_SO_NONBLOCK) && (SETBLOCK == 0)
#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
/* BeOS */
long b = nonblock ? 1 : 0;
return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
#undef SETBLOCK
#define SETBLOCK 5
#endif
#ifdef HAVE_DISABLED_NONBLOCKING
return 0; /* returns success */
#undef SETBLOCK
#define SETBLOCK 6
#endif
#if (SETBLOCK == 0)
#error "no non-blocking method was found/used/set"
#else
# error "no non-blocking method was found/used/set"
#endif
}