Fix wait_timeout (and kill) handling on Mac OS X by cleaning up how

signal handlers are set up, the blocking flags for sockets are set,
and which thread-related functions are used. (Bug #8731)


configure.in:
  Fix flags for Darwin 6 and later. Simplify Darwin 7-9 blocks to simply
  be a catch-all for *darwin* so that future Darwin releases get the
  latest flags.
include/config-win.h:
  Define my_sigset() instead of sigset().
include/my_pthread.h:
  Define my_sigset() instead of trying to monkey with sigset(), and favor
  an implementation based on sigaction().
mysys/my_pthread.c:
  Remove pthread_signal(), which is identical to the new my_sigset() macro.
mysys/thr_alarm.c:
  Use my_sigset() instead of sigset().
sql/mysqld.cc:
  Use my_sigset() instead of signal() and sigset(), remove unnecessary
  definition of sigset on __amiga__. Remove unused THREAD_SPECIFIC_SIGPIPE
  code.
  
  A future improvement would be to re-assess the use of sigaction() here
  and convert its usage to use my_sigset().
vio/vio.c:
  Always call fcntl() to initialize flags of socket in initialization to
  avoid problems on systems that don't report the flags on a socket
  correctly right after it has been returned from accept(), such as
  FreeBSD, Mac OS X, and possibly other BSD-derived systems.
vio/viosocket.c:
  If fcntl() fails in vio_blocking(), restore the flags stored in the
  vio struct.
mysql-test/r/wait_timeout.result:
  New BitKeeper file ``mysql-test/r/wait_timeout.result''
mysql-test/t/wait_timeout-master.opt:
  New BitKeeper file ``mysql-test/t/wait_timeout-master.opt''
mysql-test/t/wait_timeout.test:
  New BitKeeper file ``mysql-test/t/wait_timeout.test''

1 files changed, 0 insertions, 17 deletions

diff --git a/mysys/my_pthread.c b/mysys/my_pthread.c
index 37517fb8327..315e966bf43 100644
--- a/mysys/my_pthread.c
+++ b/mysys/my_pthread.c
@@ -404,23 +404,6 @@ int sigwait(sigset_t *setp, int *sigp)
 #endif /* DONT_USE_SIGSUSPEND */
 #endif /* HAVE_SIGWAIT */
 
-/*****************************************************************************
-** Implement pthread_signal for systems that can't use signal() with threads
-** Currently this is only used with BSDI 3.0
-*****************************************************************************/
-
-#ifdef USE_PTHREAD_SIGNAL
-
-int pthread_signal(int sig, void (*func)())
-{
-  struct sigaction sact;
-  sact.sa_flags= 0;
-  sact.sa_handler= func;
-  sigemptyset(&sact.sa_mask);
-  sigaction(sig, &sact, (struct sigaction*) 0);
-  return 0;
-}
-#endif
 
 /****************************************************************************
  The following functions fixes that all pthread functions should work