2 * "$Id: globals.c 5373 2006-04-06 20:03:32Z mike $"
4 * Global variable access routines for the Common UNIX Printing System (CUPS).
6 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
8 * These coded instructions, statements, and computer programs are the
9 * property of Easy Software Products and are protected by Federal
10 * copyright law. Distribution and use rights are outlined in the file
11 * "LICENSE.txt" which should have been included with this file. If this
12 * file is missing or damaged please contact Easy Software Products
15 * Attn: CUPS Licensing Information
16 * Easy Software Products
17 * 44141 Airport View Drive, Suite 204
18 * Hollywood, Maryland 20636 USA
20 * Voice: (301) 373-9600
21 * EMail: cups-info@cups.org
22 * WWW: http://www.cups.org
24 * This file is subject to the Apple OS-Developed Software exception.
28 * _cupsGlobals() - Return a pointer to thread local storage.
29 * cups_env_init() - Initialize environment variables.
30 * globals_init() - Initialize globals once.
31 * globals_destructor() - Free memory allocated by _cupsGlobals().
35 * Include necessary headers...
38 #include "http-private.h"
45 * 'cups_env_init()' - Initialize environment variables.
49 cups_env_init(_cups_globals_t
*g
) /* I - Global data */
51 if ((g
->cups_datadir
= getenv("CUPS_DATADIR")) == NULL
)
52 g
->cups_datadir
= CUPS_DATADIR
;
54 if ((g
->cups_serverbin
= getenv("CUPS_SERVERBIN")) == NULL
)
55 g
->cups_serverbin
= CUPS_SERVERBIN
;
57 if ((g
->cups_serverroot
= getenv("CUPS_SERVERROOT")) == NULL
)
58 g
->cups_serverroot
= CUPS_SERVERROOT
;
60 if ((g
->cups_statedir
= getenv("CUPS_STATEDIR")) == NULL
)
61 g
->cups_statedir
= CUPS_STATEDIR
;
63 if ((g
->localedir
= getenv("LOCALEDIR")) == NULL
)
64 g
->localedir
= CUPS_LOCALEDIR
;
70 * Implement per-thread globals...
77 static pthread_key_t globals_key
= -1;
78 /* Thread local storage key */
79 static pthread_once_t globals_key_once
= PTHREAD_ONCE_INIT
;
80 /* One-time initialization object */
87 static void globals_init();
88 static void globals_destructor(void *value
);
92 * '_cupsGlobals()' - Return a pointer to thread local storage
95 _cups_globals_t
* /* O - Pointer to global data */
98 _cups_globals_t
*globals
; /* Pointer to global data */
102 * Initialize the global data exactly once...
105 DEBUG_printf(("_cupsGlobals(): globals_key_once=%d\n", globals_key_once
));
107 pthread_once(&globals_key_once
, globals_init
);
110 * See if we have allocated the data yet...
113 if ((globals
= (_cups_globals_t
*)pthread_getspecific(globals_key
)) == NULL
)
115 DEBUG_puts("_cupsGlobals: allocating memory for thread...");
118 * No, allocate memory as set the pointer for the key...
121 globals
= calloc(1, sizeof(_cups_globals_t
));
122 pthread_setspecific(globals_key
, globals
);
124 DEBUG_printf((" globals=%p\n", globals
));
127 * Initialize variables that have non-zero values
130 globals
->encryption
= (http_encryption_t
)-1;
131 globals
->password_cb
= _cupsGetPassword
;
133 cups_env_init(globals
);
137 * Return the pointer to the data...
145 * 'globals_init()' - Initialize globals once.
151 pthread_key_create(&globals_key
, globals_destructor
);
153 DEBUG_printf(("globals_init(): globals_key=%x(%u)\n", globals_key
,
159 * 'globals_destructor()' - Free memory allocated by _cupsGlobals().
163 globals_destructor(void *value
) /* I - Data to free */
165 int i
; /* Looping var */
166 _cups_globals_t
*cg
; /* Global data */
169 DEBUG_printf(("globals_destructor(value=%p)\n", value
));
171 cg
= (_cups_globals_t
*)value
;
175 for (i
= 0; i
< 3; i
++)
176 cupsFileClose(cg
->stdio_files
[i
]);
178 if (cg
->last_status_message
)
179 free(cg
->last_status_message
);
181 cupsFreeOptions(cg
->cupsd_num_settings
, cg
->cupsd_settings
);
189 * Implement static globals...
193 * '_cupsGlobals()' - Return a pointer to thread local storage.
196 _cups_globals_t
* /* O - Pointer to global data */
199 static _cups_globals_t globals
; /* Global data */
200 static int initialized
= 0;/* Global data initialized? */
204 * Initialize global data as needed...
212 * Initialize global variables...
215 memset(&globals
, 0, sizeof(globals
));
217 globals
.encryption
= (http_encryption_t
)-1;
218 globals
.password_cb
= _cupsGetPassword
;
220 cups_env_init(&globals
);
225 #endif /* HAVE_PTHREAD_H */
229 * End of "$Id: globals.c 5373 2006-04-06 20:03:32Z mike $".