void my_mutex_init()
{
/* Initialize mutex attributes */
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
/*
Set mutex type to "fast" a.k.a "adaptive"
In this case the thread may steal the mutex from some other thread
that is waiting for the same mutex. This will save us some
context switches but may cause a thread to 'starve forever' while
waiting for the mutex (not likely if the code within the mutex is
short).
*/
pthread_mutexattr_init(&my_fast_mutexattr);
pthread_mutexattr_settype(&my_fast_mutexattr,
PTHREAD_MUTEX_ADAPTIVE_NP);
#endif
#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
/*
Set mutex type to "errorcheck"
*/
pthread_mutexattr_init(&my_errorcheck_mutexattr);
pthread_mutexattr_settype(&my_errorcheck_mutexattr,
PTHREAD_MUTEX_ERRORCHECK);
#endif
#if defined(SAFE_MUTEX_DEFINED)
safe_mutex_global_init();
#elif defined(MY_PTHREAD_FASTMUTEX)
fastmutex_global_init();
#endif
}
/**
Initialize my_sys functions, resources and variables
@return Initialization result
@retval 0 Success
@retval 1 Error. Couldn't initialize environment
*/
my_bool my_init(void)
{
char *str;
if (my_init_done)
return 0;
my_init_done= 1;
mysys_usage_id++;
my_umask= 0660; /* Default umask for new files */
my_umask_dir= 0700; /* Default umask for new directories */
/* Default creation of new files */
if ((str= getenv("UMASK")) != 0)
my_umask= (int) (atoi_octal(str) | 0600);
/* Default creation of new dir's */
if ((str= getenv("UMASK_DIR")) != 0)
my_umask_dir= (int) (atoi_octal(str) | 0700);
init_glob_errs();
instrumented_stdin.m_file= stdin;
instrumented_stdin.m_psi= NULL; /* not yet instrumented */
mysql_stdin= & instrumented_stdin;
if (my_thread_global_init())
return 1;
#if defined(SAFE_MUTEX)
safe_mutex_global_init(); /* Must be called early */
#endif
#if defined(MY_PTHREAD_FASTMUTEX) && !defined(SAFE_MUTEX)
fastmutex_global_init(); /* Must be called early */
#endif
#if defined(HAVE_PTHREAD_INIT)
pthread_init(); /* Must be called before DBUG_ENTER */
#endif
/* $HOME is needed early to parse configuration files located in ~/ */
if ((home_dir= getenv("HOME")) != 0)
home_dir= intern_filename(home_dir_buff, home_dir);
{
DBUG_ENTER("my_init");
DBUG_PROCESS((char*) (my_progname ? my_progname : "unknown"));
my_win_init();
DBUG_PRINT("exit", ("home: '%s'", home_dir));
#ifdef __WIN__
win32_init_tcp_ip();
#endif
DBUG_RETURN(0);
}
} /* my_init */
my_bool my_init(void)
{
char * str;
if (my_init_done)
return 0;
my_init_done=1;
mysys_usage_id++;
my_umask= 0660; /* Default umask for new files */
my_umask_dir= 0700; /* Default umask for new directories */
init_glob_errs();
#if defined(THREAD)
if (my_thread_global_init())
return 1;
# if defined(SAFE_MUTEX)
safe_mutex_global_init(); /* Must be called early */
# endif
#endif
#if defined(THREAD) && defined(MY_PTHREAD_FASTMUTEX) && !defined(SAFE_MUTEX)
fastmutex_global_init(); /* Must be called early */
#endif
netware_init();
#ifdef THREAD
#if defined(HAVE_PTHREAD_INIT)
pthread_init(); /* Must be called before DBUG_ENTER */
#endif
#if !defined( __WIN__) && !defined(__NETWARE__)
sigfillset(&my_signals); /* signals blocked by mf_brkhant */
#endif
#endif /* THREAD */
{
DBUG_ENTER("my_init");
DBUG_PROCESS((char*) (my_progname ? my_progname : "unknown"));
if (!home_dir)
{ /* Don't initialize twice */
my_win_init();
if ((home_dir=getenv("HOME")) != 0)
home_dir=intern_filename(home_dir_buff,home_dir);
#ifndef VMS
/* Default creation of new files */
if ((str=getenv("UMASK")) != 0)
my_umask=(int) (atoi_octal(str) | 0600);
/* Default creation of new dir's */
if ((str=getenv("UMASK_DIR")) != 0)
my_umask_dir=(int) (atoi_octal(str) | 0700);
#endif
#ifdef VMS
init_ctype(); /* Stupid linker don't link _ctype.c */
#endif
DBUG_PRINT("exit",("home: '%s'",home_dir));
}
#ifdef __WIN__
win32_init_tcp_ip();
#endif
DBUG_RETURN(0);
}
} /* my_init */
/**
Perform a limited initialisation of mysys.
This initialisation is sufficient to:
- allocate memory,
- read configuration files,
- parse command lines arguments.
To complete the mysys initialisation,
call my_init().
@return 0 on success
*/
my_bool my_basic_init(void)
{
char * str;
if (my_basic_init_done)
return 0;
my_basic_init_done= 1;
mysys_usage_id++;
my_umask= 0660; /* Default umask for new files */
my_umask_dir= 0700; /* Default umask for new directories */
/* Default creation of new files */
if ((str= getenv("UMASK")) != 0)
my_umask= (int) (atoi_octal(str) | 0600);
/* Default creation of new dir's */
if ((str= getenv("UMASK_DIR")) != 0)
my_umask_dir= (int) (atoi_octal(str) | 0700);
init_glob_errs();
instrumented_stdin.m_file= stdin;
instrumented_stdin.m_psi= NULL; /* not yet instrumented */
mysql_stdin= & instrumented_stdin;
if (my_thread_global_init())
return 1;
#if defined(SAFE_MUTEX)
safe_mutex_global_init(); /* Must be called early */
#endif
#if defined(MY_PTHREAD_FASTMUTEX) && !defined(SAFE_MUTEX)
fastmutex_global_init(); /* Must be called early */
#endif
#if defined(HAVE_PTHREAD_INIT)
pthread_init(); /* Must be called before DBUG_ENTER */
#endif
if (my_thread_basic_global_init())
return 1;
/* $HOME is needed early to parse configuration files located in ~/ */
if ((home_dir= getenv("HOME")) != 0)
home_dir= intern_filename(home_dir_buff, home_dir);
return 0;
}
