*
* Contents:
*
- * _cupsGlobals() - Return a pointer to thread local storage.
- * cups_env_init() - Initialize environment variables.
- * globals_init() - Initialize globals once.
- * globals_destructor() - Free memory allocated by _cupsGlobals().
+ * _cupsGlobalLock() - Lock the global mutex.
+ * _cupsGlobals() - Return a pointer to thread local storage
+ * _cupsGlobalUnlock() - Unlock the global mutex.
+ * DllMain() - Main entry for library.
+ * cups_globals_alloc() - Allocate and initialize global data.
+ * cups_globals_free() - Free global data.
+ * cups_globals_init() - Initialize environment variables.
*/
/*
/*
- * 'cups_env_init()' - Initialize environment variables.
+ * Local globals...
*/
-static void
-cups_env_init(_cups_globals_t *g) /* I - Global data */
-{
-#ifdef WIN32
- HKEY key; /* Registry key */
- DWORD size; /* Size of string */
- static char installdir[1024], /* Install directory */
- confdir[1024], /* Server root directory */
- localedir[1024]; /* Locale directory */
+static _cups_threadkey_t cups_globals_key = _CUPS_THREADKEY_INITIALIZER;
+ /* Thread local storage key */
+#ifdef HAVE_PTHREAD_H
+static pthread_once_t cups_globals_key_once = PTHREAD_ONCE_INIT;
+ /* One-time initialization object */
+#endif /* HAVE_PTHREAD_H */
+static _cups_mutex_t cups_global_mutex = _CUPS_MUTEX_INITIALIZER;
+ /* Global critical section */
- /*
- * Open the registry...
- */
- strcpy(installdir, "C:/Program Files/cups.org");
+/*
+ * Local functions...
+ */
- if (!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\cups.org", 0, KEY_READ,
- &key))
- {
- /*
- * Grab the installation directory...
- */
+static _cups_globals_t *cups_globals_alloc(void);
+static void cups_globals_free(_cups_globals_t *g);
+#ifdef HAVE_PTHREAD_H
+static void cups_globals_init(void);
+#endif /* HAVE_PTHREAD_H */
- size = sizeof(installdir);
- RegQueryValueEx(key, "installdir", NULL, NULL, installdir, &size);
- RegCloseKey(key);
- }
- snprintf(confdir, sizeof(confdir), "%s/conf", installdir);
- snprintf(localedir, sizeof(localedir), "%s/locale", installdir);
+/*
+ * '_cupsGlobalLock()' - Lock the global mutex.
+ */
- if ((g->cups_datadir = getenv("CUPS_DATADIR")) == NULL)
- g->cups_datadir = installdir;
+void
+_cupsGlobalLock(void)
+{
+#ifdef HAVE_PTHREAD_H
+ pthread_mutex_lock(&cups_global_mutex);
+#elif defined(WIN32)
+ EnterCriticalSection(&cups_global_mutex->m_criticalSection);
+#endif /* HAVE_PTHREAD_H */
+}
- if ((g->cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
- g->cups_serverbin = installdir;
- if ((g->cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL)
- g->cups_serverroot = confdir;
+/*
+ * '_cupsGlobals()' - Return a pointer to thread local storage
+ */
- if ((g->cups_statedir = getenv("CUPS_STATEDIR")) == NULL)
- g->cups_statedir = confdir;
+_cups_globals_t * /* O - Pointer to global data */
+_cupsGlobals(void)
+{
+ _cups_globals_t *cg; /* Pointer to global data */
- if ((g->localedir = getenv("LOCALEDIR")) == NULL)
- g->localedir = localedir;
-#else
-# ifdef HAVE_GETEUID
- if ((geteuid() != getuid() && getuid()) || getegid() != getgid())
-# else
- if (!getuid())
-# endif /* HAVE_GETEUID */
+#ifdef HAVE_PTHREAD_H
+ /*
+ * Initialize the global data exactly once...
+ */
+
+ pthread_once(&cups_globals_key_once, cups_globals_init);
+#endif /* HAVE_PTHREAD_H */
+
+ /*
+ * See if we have allocated the data yet...
+ */
+
+ if ((cg = (_cups_globals_t *)_cupsThreadGetData(cups_globals_key)) == NULL)
{
/*
- * When running setuid/setgid, don't allow environment variables to override
- * the directories...
+ * No, allocate memory as set the pointer for the key...
*/
- g->cups_datadir = CUPS_DATADIR;
- g->cups_serverbin = CUPS_SERVERBIN;
- g->cups_serverroot = CUPS_SERVERROOT;
- g->cups_statedir = CUPS_STATEDIR;
- g->localedir = CUPS_LOCALEDIR;
+ if ((cg = cups_globals_alloc()) != NULL)
+ _cupsThreadSetData(cups_globals_key, cg);
}
- else
- {
- /*
- * Allow directories to be overridden by environment variables.
- */
- if ((g->cups_datadir = getenv("CUPS_DATADIR")) == NULL)
- g->cups_datadir = CUPS_DATADIR;
+ /*
+ * Return the pointer to the data...
+ */
- if ((g->cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
- g->cups_serverbin = CUPS_SERVERBIN;
+ return (cg);
+}
- if ((g->cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL)
- g->cups_serverroot = CUPS_SERVERROOT;
- if ((g->cups_statedir = getenv("CUPS_STATEDIR")) == NULL)
- g->cups_statedir = CUPS_STATEDIR;
+/*
+ * '_cupsGlobalUnlock()' - Unlock the global mutex.
+ */
- if ((g->localedir = getenv("LOCALEDIR")) == NULL)
- g->localedir = CUPS_LOCALEDIR;
- }
-#endif /* WIN32 */
+void
+_cupsGlobalUnlock(void)
+{
+#ifdef HAVE_PTHREAD_H
+ pthread_mutex_unlock(&cups_global_mutex);
+#elif defined(WIN32)
+ LeaveCriticalSection(&cups_global_mutex->m_criticalSection);
+#endif /* HAVE_PTHREAD_H */
}
-#ifdef HAVE_PTHREAD_H
+#ifdef WIN32
/*
- * Implement per-thread globals...
+ * 'DllMain()' - Main entry for library.
*/
-/*
- * Local globals...
- */
+BOOL WINAPI /* O - Success/failure */
+DllMain(HINSTANCE hinst, /* I - DLL module handle */
+ DWORD reason, /* I - Reason */
+ LPVOID reserved) /* I - Unused */
+{
+ _cups_globals_t *cg; /* Global data */
-static pthread_key_t globals_key = -1;
- /* Thread local storage key */
-static pthread_once_t globals_key_once = PTHREAD_ONCE_INIT;
- /* One-time initialization object */
+ (void)hinst;
+ (void)reserved;
-/*
- * Local functions...
- */
+ switch (reason)
+ {
+ case DLL_PROCESS_ATTACH : /* Called on library initialization */
+ InitializeCriticalSection(&cups_global_lock);
+
+ if ((cups_globals_key = TlsAlloc()) == TLS_OUT_OF_INDEXES)
+ return (FALSE);
+ break;
+
+ case DLL_THREAD_DETACH : /* Called when a thread terminates */
+ if ((cg = (_cups_globals_t *)TlsGetValue(cups_globals_key)) != NULL)
+ cups_globals_free(cg);
+ break;
+
+ case DLL_PROCESS_DETACH : /* Called when library is unloaded */
+ if ((cg = (_cups_globals_t *)TlsGetValue(cups_globals_key)) != NULL)
+ cups_globals_free(cg);
-static void globals_init();
-static void globals_destructor(void *value);
+ TlsFree(cups_globals_key);
+ DeleteCriticalSection(&cups_global_lock);
+ break;
+
+ default:
+ break;
+ }
+
+ return (TRUE);
+}
+#endif /* WIN32 */
/*
- * '_cupsGlobals()' - Return a pointer to thread local storage
+ * 'cups_globals_alloc()' - Allocate and initialize global data.
*/
-_cups_globals_t * /* O - Pointer to global data */
-_cupsGlobals(void)
+static _cups_globals_t * /* O - Pointer to global data */
+cups_globals_alloc(void)
{
- _cups_globals_t *globals; /* Pointer to global data */
+ _cups_globals_t *cg = malloc(sizeof(_cups_globals_t));
+ /* Pointer to global data */
+#ifdef WIN32
+ HKEY key; /* Registry key */
+ DWORD size; /* Size of string */
+ static char installdir[1024], /* Install directory */
+ confdir[1024], /* Server root directory */
+ localedir[1024]; /* Locale directory */
+#endif /* WIN32 */
+
+ if (!cg)
+ return (NULL);
/*
- * Initialize the global data exactly once...
+ * Clear the global storage and set the default encryption and password
+ * callback values...
*/
- pthread_once(&globals_key_once, globals_init);
+ memset(cg, 0, sizeof(_cups_globals_t));
+ cg->encryption = (http_encryption_t)-1;
+ cg->password_cb = (cups_password_cb2_t)_cupsGetPassword;
/*
- * See if we have allocated the data yet...
+ * Then set directories as appropriate...
+ */
+
+#ifdef WIN32
+ /*
+ * Open the registry...
*/
- if ((globals = (_cups_globals_t *)pthread_getspecific(globals_key)) == NULL)
+ strcpy(installdir, "C:/Program Files/cups.org");
+
+ if (!RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\cups.org", 0, KEY_READ,
+ &key))
{
/*
- * No, allocate memory as set the pointer for the key...
+ * Grab the installation directory...
*/
- globals = calloc(1, sizeof(_cups_globals_t));
- pthread_setspecific(globals_key, globals);
+ size = sizeof(installdir);
+ RegQueryValueEx(key, "installdir", NULL, NULL, installdir, &size);
+ RegCloseKey(key);
+ }
+
+ snprintf(confdir, sizeof(confdir), "%s/conf", installdir);
+ snprintf(localedir, sizeof(localedir), "%s/locale", installdir);
+
+ if ((cg->cups_datadir = getenv("CUPS_DATADIR")) == NULL)
+ cg->cups_datadir = installdir;
+ if ((cg->cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
+ cg->cups_serverbin = installdir;
+
+ if ((cg->cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL)
+ cg->cups_serverroot = confdir;
+
+ if ((cg->cups_statedir = getenv("CUPS_STATEDIR")) == NULL)
+ cg->cups_statedir = confdir;
+
+ if ((cg->localedir = getenv("LOCALEDIR")) == NULL)
+ cg->localedir = localedir;
+
+#else
+# ifdef HAVE_GETEUID
+ if ((geteuid() != getuid() && getuid()) || getegid() != getgid())
+# else
+ if (!getuid())
+# endif /* HAVE_GETEUID */
+ {
/*
- * Initialize variables that have non-zero values
+ * When running setuid/setgid, don't allow environment variables to override
+ * the directories...
*/
- globals->encryption = (http_encryption_t)-1;
- globals->password_cb = (cups_password_cb2_t)_cupsGetPassword;
-
- cups_env_init(globals);
+ cg->cups_datadir = CUPS_DATADIR;
+ cg->cups_serverbin = CUPS_SERVERBIN;
+ cg->cups_serverroot = CUPS_SERVERROOT;
+ cg->cups_statedir = CUPS_STATEDIR;
+ cg->localedir = CUPS_LOCALEDIR;
}
+ else
+ {
+ /*
+ * Allow directories to be overridden by environment variables.
+ */
- /*
- * Return the pointer to the data...
- */
+ if ((cg->cups_datadir = getenv("CUPS_DATADIR")) == NULL)
+ cg->cups_datadir = CUPS_DATADIR;
- return (globals);
-}
+ if ((cg->cups_serverbin = getenv("CUPS_SERVERBIN")) == NULL)
+ cg->cups_serverbin = CUPS_SERVERBIN;
+ if ((cg->cups_serverroot = getenv("CUPS_SERVERROOT")) == NULL)
+ cg->cups_serverroot = CUPS_SERVERROOT;
-/*
- * 'globals_init()' - Initialize globals once.
- */
+ if ((cg->cups_statedir = getenv("CUPS_STATEDIR")) == NULL)
+ cg->cups_statedir = CUPS_STATEDIR;
-static void
-globals_init()
-{
- pthread_key_create(&globals_key, globals_destructor);
+ if ((cg->localedir = getenv("LOCALEDIR")) == NULL)
+ cg->localedir = CUPS_LOCALEDIR;
+ }
+#endif /* WIN32 */
+
+ return (cg);
}
/*
- * 'globals_destructor()' - Free memory allocated by _cupsGlobals().
+ * 'cups_globals_free()' - Free global data.
*/
static void
-globals_destructor(void *value) /* I - Data to free */
+cups_globals_free(_cups_globals_t *cg) /* I - Pointer to global data */
{
- int i; /* Looping var */
_ipp_buffer_t *buffer, /* Current IPP read/write buffer */
*next; /* Next buffer */
- _cups_globals_t *cg; /* Global data */
- cg = (_cups_globals_t *)value;
-
- httpClose(cg->http);
-
- for (i = 0; i < 3; i ++)
- cupsFileClose(cg->stdio_files[i]);
-
if (cg->last_status_message)
_cupsStrFree(cg->last_status_message);
- cupsFreeOptions(cg->cupsd_num_settings, cg->cupsd_settings);
-
for (buffer = cg->ipp_buffers; buffer; buffer = next)
{
next = buffer->next;
cupsArrayDelete(cg->pwg_size_lut);
cupsArrayDelete(cg->leg_size_lut);
- free(value);
-}
+ httpClose(cg->http);
+ cupsFileClose(cg->stdio_files[0]);
+ cupsFileClose(cg->stdio_files[1]);
+ cupsFileClose(cg->stdio_files[2]);
-#else
-/*
- * Implement static globals...
- */
+ cupsFreeOptions(cg->cupsd_num_settings, cg->cupsd_settings);
+ free(cg);
+}
+
+
+#ifdef HAVE_PTHREAD_H
/*
- * '_cupsGlobals()' - Return a pointer to thread local storage.
+ * 'cups_globals_init()' - Initialize environment variables.
*/
-_cups_globals_t * /* O - Pointer to global data */
-_cupsGlobals(void)
+static void
+cups_globals_init(void)
{
- static _cups_globals_t globals; /* Global data */
- static int initialized = 0;/* Global data initialized? */
-
-
/*
- * Initialize global data as needed...
+ * Register the global data for this thread...
*/
- if (!initialized)
- {
- initialized = 1;
-
- /*
- * Initialize global variables...
- */
-
- memset(&globals, 0, sizeof(globals));
-
- globals.encryption = (http_encryption_t)-1;
- globals.password_cb = (cups_password_cb2_t)_cupsGetPassword;
-
- cups_env_init(&globals);
- }
-
- return (&globals);
+ pthread_key_create(&cups_globals_key, (void (*)(void *))cups_globals_free);
}
#endif /* HAVE_PTHREAD_H */
projects / thirdparty / cups.git / blobdiff