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Bug #9954 mysql-4.1.11/cmd-line-utils/libedit/makelist.sh is not portable

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- Changed makelist.sh
  - Bump up required version of autoconf
  - Use new style to init mutex in my_thr_init


cmd-line-utils/libedit/makelist.sh:
  Changed file so it works also on windows cr/lf files.
configure.in:
  Bump up required AC version number so that correct version of aclocal and autoconf is selected.
include/my_pthread.h:
  Use PTHREAD_MUTEX_ADAPTIVE_NP to see if "fast" mutexes are available
  Remove "errorcheck" mutexes, since they are never used.
mysys/my_thr_init.c:
  Use new style functions to init mutex if PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP is defined
  Add comment what mutex "kind" means
This commit is contained in:
unknown 2005-04-27 09:59:12 +02:00
commit 7e04d257eb
4 changed files with 20 additions and 29 deletions
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28
mysys/my_thr_init.c
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@ -40,9 +40,6 @@ pthread_mutex_t LOCK_gethostbyname_r;
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
pthread_mutexattr_t my_fast_mutexattr;
#endif
#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
pthread_mutexattr_t my_errchk_mutexattr;
#endif
/*
initialize thread environment
@ -62,19 +59,21 @@ my_bool my_thread_global_init(void)
fprintf(stderr,"Can't initialize threads: error %d\n",errno);
return 1;
}
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
pthread_mutexattr_init(&my_fast_mutexattr);
/*
Note that the following statement may give a compiler warning under
some configurations, but there isn't anything we can do about this as
this is a bug in the header files for the thread implementation
Set mutex type to "fast" a.k.a "adaptive"
The mutex kind determines what happens if a thread attempts to lock
a mutex it already owns with pthread_mutex_lock(3). If the mutex
is of the ``fast'' kind, pthread_mutex_lock(3) simply suspends
the calling thread forever. If the mutex is of the ``error checking''
kind, pthread_mutex_lock(3) returns immediately with the error
code EDEADLK.
*/
pthread_mutexattr_setkind_np(&my_fast_mutexattr,PTHREAD_MUTEX_ADAPTIVE_NP);
#endif
#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
pthread_mutexattr_init(&my_errchk_mutexattr);
pthread_mutexattr_setkind_np(&my_errchk_mutexattr,
PTHREAD_MUTEX_ERRORCHECK_NP);
pthread_mutexattr_init(&my_fast_mutexattr);
pthread_mutexattr_settype(&my_fast_mutexattr,
PTHREAD_MUTEX_ADAPTIVE_NP);
#endif
pthread_mutex_init(&THR_LOCK_malloc,MY_MUTEX_INIT_FAST);
@ -108,9 +107,6 @@ void my_thread_global_end(void)
pthread_key_delete(THR_KEY_mysys);
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
pthread_mutexattr_destroy(&my_fast_mutexattr);
#endif
#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
pthread_mutexattr_destroy(&my_errchk_mutexattr);
#endif
pthread_mutex_destroy(&THR_LOCK_malloc);
pthread_mutex_destroy(&THR_LOCK_open);