2 * "$Id: globals.c 7460 2008-04-16 02:19:54Z mike $"
4 * Global variable access routines for the Common UNIX Printing System (CUPS).
6 * Copyright 2007-2008 by Apple Inc.
7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
9 * These coded instructions, statements, and computer programs are the
10 * property of Apple Inc. and are protected by Federal copyright
11 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
12 * which should have been included with this file. If this file is
13 * file is missing or damaged, see the license at "http://www.cups.org/".
15 * This file is subject to the Apple OS-Developed Software exception.
19 * _cupsGlobals() - Return a pointer to thread local storage.
20 * cups_env_init() - Initialize environment variables.
21 * globals_init() - Initialize globals once.
22 * globals_destructor() - Free memory allocated by _cupsGlobals().
26 * Include necessary headers...
29 #include "http-private.h"
35 * 'cups_env_init()' - Initialize environment variables.
39 cups_env_init(_cups_globals_t
*g
) /* I - Global data */
41 if ((g
->cups_datadir
= getenv("CUPS_DATADIR")) == NULL
)
42 g
->cups_datadir
= CUPS_DATADIR
;
44 if ((g
->cups_serverbin
= getenv("CUPS_SERVERBIN")) == NULL
)
45 g
->cups_serverbin
= CUPS_SERVERBIN
;
47 if ((g
->cups_serverroot
= getenv("CUPS_SERVERROOT")) == NULL
)
48 g
->cups_serverroot
= CUPS_SERVERROOT
;
50 if ((g
->cups_statedir
= getenv("CUPS_STATEDIR")) == NULL
)
51 g
->cups_statedir
= CUPS_STATEDIR
;
53 if ((g
->localedir
= getenv("LOCALEDIR")) == NULL
)
54 g
->localedir
= CUPS_LOCALEDIR
;
60 * Implement per-thread globals...
67 static pthread_key_t globals_key
= -1;
68 /* Thread local storage key */
69 static pthread_once_t globals_key_once
= PTHREAD_ONCE_INIT
;
70 /* One-time initialization object */
77 static void globals_init();
78 static void globals_destructor(void *value
);
82 * '_cupsGlobals()' - Return a pointer to thread local storage
85 _cups_globals_t
* /* O - Pointer to global data */
88 _cups_globals_t
*globals
; /* Pointer to global data */
92 * Initialize the global data exactly once...
95 pthread_once(&globals_key_once
, globals_init
);
98 * See if we have allocated the data yet...
101 if ((globals
= (_cups_globals_t
*)pthread_getspecific(globals_key
)) == NULL
)
104 * No, allocate memory as set the pointer for the key...
107 globals
= calloc(1, sizeof(_cups_globals_t
));
108 pthread_setspecific(globals_key
, globals
);
111 * Initialize variables that have non-zero values
114 globals
->encryption
= (http_encryption_t
)-1;
115 globals
->password_cb
= _cupsGetPassword
;
117 cups_env_init(globals
);
121 * Return the pointer to the data...
129 * 'globals_init()' - Initialize globals once.
135 pthread_key_create(&globals_key
, globals_destructor
);
140 * 'globals_destructor()' - Free memory allocated by _cupsGlobals().
144 globals_destructor(void *value
) /* I - Data to free */
146 int i
; /* Looping var */
147 _cups_globals_t
*cg
; /* Global data */
150 cg
= (_cups_globals_t
*)value
;
154 for (i
= 0; i
< 3; i
++)
155 cupsFileClose(cg
->stdio_files
[i
]);
157 if (cg
->last_status_message
)
158 _cupsStrFree(cg
->last_status_message
);
160 cupsFreeOptions(cg
->cupsd_num_settings
, cg
->cupsd_settings
);
168 * Implement static globals...
172 * '_cupsGlobals()' - Return a pointer to thread local storage.
175 _cups_globals_t
* /* O - Pointer to global data */
178 static _cups_globals_t globals
; /* Global data */
179 static int initialized
= 0;/* Global data initialized? */
183 * Initialize global data as needed...
191 * Initialize global variables...
194 memset(&globals
, 0, sizeof(globals
));
196 globals
.encryption
= (http_encryption_t
)-1;
197 globals
.password_cb
= _cupsGetPassword
;
199 cups_env_init(&globals
);
204 #endif /* HAVE_PTHREAD_H */
208 * End of "$Id: globals.c 7460 2008-04-16 02:19:54Z mike $".