Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 1 | /** |
Daniel Veillard | dee2348 | 2008-04-11 12:58:43 +0000 | [diff] [blame] | 2 | * threads.c: set of generic threading related routines |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 3 | * |
| 4 | * See Copyright for the status of this software. |
| 5 | * |
| 6 | * Gary Pennington <Gary.Pennington@uk.sun.com> |
| 7 | * daniel@veillard.com |
| 8 | */ |
| 9 | |
Daniel Veillard | 34ce8be | 2002-03-18 19:37:11 +0000 | [diff] [blame] | 10 | #define IN_LIBXML |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 11 | #include "libxml.h" |
| 12 | |
| 13 | #include <string.h> |
| 14 | |
| 15 | #include <libxml/threads.h> |
| 16 | #include <libxml/globals.h> |
| 17 | |
| 18 | #ifdef HAVE_SYS_TYPES_H |
| 19 | #include <sys/types.h> |
| 20 | #endif |
| 21 | #ifdef HAVE_UNISTD_H |
| 22 | #include <unistd.h> |
| 23 | #endif |
| 24 | #ifdef HAVE_STDLIB_H |
| 25 | #include <stdlib.h> |
| 26 | #endif |
| 27 | #ifdef HAVE_PTHREAD_H |
| 28 | #include <pthread.h> |
Eric Zurcher | 243b034 | 2009-10-01 00:13:07 +0200 | [diff] [blame] | 29 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 30 | #include <windows.h> |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 31 | #ifndef HAVE_COMPILER_TLS |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 32 | #include <process.h> |
| 33 | #endif |
| 34 | #endif |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 35 | |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 36 | #ifdef HAVE_BEOS_THREADS |
| 37 | #include <OS.h> |
| 38 | #include <TLS.h> |
| 39 | #endif |
| 40 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 41 | #if defined(SOLARIS) |
| 42 | #include <note.h> |
| 43 | #endif |
| 44 | |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 45 | /* #define DEBUG_THREADS */ |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 46 | |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 47 | #ifdef HAVE_PTHREAD_H |
| 48 | |
| 49 | static int libxml_is_threaded = -1; |
Michael Heimpold | fff8a6b | 2014-12-22 11:12:12 +0800 | [diff] [blame] | 50 | #if defined(__GNUC__) && defined(__GLIBC__) |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 51 | #ifdef linux |
| 52 | #if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (__GNUC__ > 3) |
| 53 | extern int pthread_once (pthread_once_t *__once_control, |
| 54 | void (*__init_routine) (void)) |
| 55 | __attribute((weak)); |
| 56 | extern void *pthread_getspecific (pthread_key_t __key) |
| 57 | __attribute((weak)); |
| 58 | extern int pthread_setspecific (pthread_key_t __key, |
| 59 | __const void *__pointer) |
| 60 | __attribute((weak)); |
| 61 | extern int pthread_key_create (pthread_key_t *__key, |
| 62 | void (*__destr_function) (void *)) |
| 63 | __attribute((weak)); |
Daniel Veillard | d4a3f24 | 2009-01-18 15:41:30 +0000 | [diff] [blame] | 64 | extern int pthread_key_delete (pthread_key_t __key) |
| 65 | __attribute((weak)); |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 66 | extern int pthread_mutex_init () |
| 67 | __attribute((weak)); |
| 68 | extern int pthread_mutex_destroy () |
| 69 | __attribute((weak)); |
| 70 | extern int pthread_mutex_lock () |
| 71 | __attribute((weak)); |
| 72 | extern int pthread_mutex_unlock () |
| 73 | __attribute((weak)); |
| 74 | extern int pthread_cond_init () |
| 75 | __attribute((weak)); |
Daniel Veillard | 2cba415 | 2008-08-27 11:45:41 +0000 | [diff] [blame] | 76 | extern int pthread_cond_destroy () |
| 77 | __attribute((weak)); |
| 78 | extern int pthread_cond_wait () |
| 79 | __attribute((weak)); |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 80 | extern int pthread_equal () |
| 81 | __attribute((weak)); |
| 82 | extern pthread_t pthread_self () |
| 83 | __attribute((weak)); |
| 84 | extern int pthread_key_create () |
| 85 | __attribute((weak)); |
Daniel Veillard | d4a3f24 | 2009-01-18 15:41:30 +0000 | [diff] [blame] | 86 | extern int pthread_key_delete () |
| 87 | __attribute((weak)); |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 88 | extern int pthread_cond_signal () |
| 89 | __attribute((weak)); |
| 90 | #endif |
| 91 | #endif /* linux */ |
Michael Heimpold | fff8a6b | 2014-12-22 11:12:12 +0800 | [diff] [blame] | 92 | #endif /* defined(__GNUC__) && defined(__GLIBC__) */ |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 93 | #endif /* HAVE_PTHREAD_H */ |
| 94 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 95 | /* |
| 96 | * TODO: this module still uses malloc/free and not xmlMalloc/xmlFree |
| 97 | * to avoid some crazyness since xmlMalloc/xmlFree may actually |
| 98 | * be hosted on allocated blocks needing them for the allocation ... |
| 99 | */ |
| 100 | |
| 101 | /* |
| 102 | * xmlMutex are a simple mutual exception locks |
| 103 | */ |
| 104 | struct _xmlMutex { |
| 105 | #ifdef HAVE_PTHREAD_H |
| 106 | pthread_mutex_t lock; |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 107 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 108 | HANDLE mutex; |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 109 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 110 | sem_id sem; |
| 111 | thread_id tid; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 112 | #else |
| 113 | int empty; |
| 114 | #endif |
| 115 | }; |
| 116 | |
| 117 | /* |
| 118 | * xmlRMutex are reentrant mutual exception locks |
| 119 | */ |
| 120 | struct _xmlRMutex { |
| 121 | #ifdef HAVE_PTHREAD_H |
| 122 | pthread_mutex_t lock; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 123 | unsigned int held; |
| 124 | unsigned int waiters; |
| 125 | pthread_t tid; |
| 126 | pthread_cond_t cv; |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 127 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 128 | CRITICAL_SECTION cs; |
| 129 | unsigned int count; |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 130 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 131 | xmlMutexPtr lock; |
| 132 | thread_id tid; |
| 133 | int32 count; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 134 | #else |
| 135 | int empty; |
| 136 | #endif |
| 137 | }; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 138 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 139 | /* |
| 140 | * This module still has some internal static data. |
| 141 | * - xmlLibraryLock a global lock |
| 142 | * - globalkey used for per-thread data |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 143 | */ |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 144 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 145 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 146 | static pthread_key_t globalkey; |
| 147 | static pthread_t mainthread; |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 148 | static pthread_once_t once_control = PTHREAD_ONCE_INIT; |
Friedrich Haubensak | 3f6cfbd | 2012-09-12 17:34:53 +0200 | [diff] [blame] | 149 | static pthread_once_t once_control_init = PTHREAD_ONCE_INIT; |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 150 | static pthread_mutex_t global_init_lock = PTHREAD_MUTEX_INITIALIZER; |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 151 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 152 | #if defined(HAVE_COMPILER_TLS) |
| 153 | static __declspec(thread) xmlGlobalState tlstate; |
| 154 | static __declspec(thread) int tlstate_inited = 0; |
| 155 | #else /* HAVE_COMPILER_TLS */ |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 156 | static DWORD globalkey = TLS_OUT_OF_INDEXES; |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 157 | #endif /* HAVE_COMPILER_TLS */ |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 158 | static DWORD mainthread; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 159 | static struct { |
Daniel Veillard | 36616dd | 2005-02-25 07:31:49 +0000 | [diff] [blame] | 160 | DWORD done; |
| 161 | DWORD control; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 162 | } run_once = { 0, 0}; |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 163 | static volatile LPCRITICAL_SECTION global_init_lock = NULL; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 164 | |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 165 | /* endif HAVE_WIN32_THREADS */ |
| 166 | #elif defined HAVE_BEOS_THREADS |
| 167 | int32 globalkey = 0; |
| 168 | thread_id mainthread = 0; |
| 169 | int32 run_once_init = 0; |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 170 | static int32 global_init_lock = -1; |
| 171 | static vint32 global_init_count = 0; |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 172 | #endif |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 173 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 174 | static xmlRMutexPtr xmlLibraryLock = NULL; |
| 175 | |
Daniel Veillard | a9cce9c | 2003-09-29 13:20:24 +0000 | [diff] [blame] | 176 | #ifdef LIBXML_THREAD_ENABLED |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 177 | static void xmlOnceInit(void); |
Daniel Veillard | a9cce9c | 2003-09-29 13:20:24 +0000 | [diff] [blame] | 178 | #endif |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 179 | |
| 180 | /** |
Daniel Veillard | 01c13b5 | 2002-12-10 15:19:08 +0000 | [diff] [blame] | 181 | * xmlNewMutex: |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 182 | * |
| 183 | * xmlNewMutex() is used to allocate a libxml2 token struct for use in |
| 184 | * synchronizing access to data. |
| 185 | * |
| 186 | * Returns a new simple mutex pointer or NULL in case of error |
| 187 | */ |
| 188 | xmlMutexPtr |
| 189 | xmlNewMutex(void) |
| 190 | { |
| 191 | xmlMutexPtr tok; |
| 192 | |
| 193 | if ((tok = malloc(sizeof(xmlMutex))) == NULL) |
| 194 | return (NULL); |
| 195 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 196 | if (libxml_is_threaded != 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 197 | pthread_mutex_init(&tok->lock, NULL); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 198 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 199 | tok->mutex = CreateMutex(NULL, FALSE, NULL); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 200 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 201 | if ((tok->sem = create_sem(1, "xmlMutex")) < B_OK) { |
| 202 | free(tok); |
| 203 | return NULL; |
| 204 | } |
| 205 | tok->tid = -1; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 206 | #endif |
| 207 | return (tok); |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * xmlFreeMutex: |
| 212 | * @tok: the simple mutex |
| 213 | * |
| 214 | * xmlFreeMutex() is used to reclaim resources associated with a libxml2 token |
| 215 | * struct. |
| 216 | */ |
| 217 | void |
| 218 | xmlFreeMutex(xmlMutexPtr tok) |
| 219 | { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 220 | if (tok == NULL) |
| 221 | return; |
Daniel Veillard | df101d8 | 2003-07-08 14:03:36 +0000 | [diff] [blame] | 222 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 223 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 224 | if (libxml_is_threaded != 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 225 | pthread_mutex_destroy(&tok->lock); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 226 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 227 | CloseHandle(tok->mutex); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 228 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 229 | delete_sem(tok->sem); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 230 | #endif |
| 231 | free(tok); |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * xmlMutexLock: |
| 236 | * @tok: the simple mutex |
| 237 | * |
| 238 | * xmlMutexLock() is used to lock a libxml2 token. |
| 239 | */ |
| 240 | void |
Daniel Veillard | 70bcb0e | 2003-08-08 14:00:28 +0000 | [diff] [blame] | 241 | xmlMutexLock(xmlMutexPtr tok) |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 242 | { |
Daniel Veillard | 70bcb0e | 2003-08-08 14:00:28 +0000 | [diff] [blame] | 243 | if (tok == NULL) |
| 244 | return; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 245 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 246 | if (libxml_is_threaded != 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 247 | pthread_mutex_lock(&tok->lock); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 248 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 249 | WaitForSingleObject(tok->mutex, INFINITE); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 250 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 251 | if (acquire_sem(tok->sem) != B_NO_ERROR) { |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 252 | #ifdef DEBUG_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 253 | xmlGenericError(xmlGenericErrorContext, |
| 254 | "xmlMutexLock():BeOS:Couldn't aquire semaphore\n"); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 255 | #endif |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 256 | } |
| 257 | tok->tid = find_thread(NULL); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 258 | #endif |
| 259 | |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * xmlMutexUnlock: |
| 264 | * @tok: the simple mutex |
| 265 | * |
| 266 | * xmlMutexUnlock() is used to unlock a libxml2 token. |
| 267 | */ |
| 268 | void |
Daniel Veillard | 5805be2 | 2003-08-28 08:03:23 +0000 | [diff] [blame] | 269 | xmlMutexUnlock(xmlMutexPtr tok) |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 270 | { |
Daniel Veillard | 5805be2 | 2003-08-28 08:03:23 +0000 | [diff] [blame] | 271 | if (tok == NULL) |
| 272 | return; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 273 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 274 | if (libxml_is_threaded != 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 275 | pthread_mutex_unlock(&tok->lock); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 276 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 277 | ReleaseMutex(tok->mutex); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 278 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 279 | if (tok->tid == find_thread(NULL)) { |
| 280 | tok->tid = -1; |
| 281 | release_sem(tok->sem); |
| 282 | } |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 283 | #endif |
| 284 | } |
| 285 | |
| 286 | /** |
Daniel Veillard | 01c13b5 | 2002-12-10 15:19:08 +0000 | [diff] [blame] | 287 | * xmlNewRMutex: |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 288 | * |
| 289 | * xmlRNewMutex() is used to allocate a reentrant mutex for use in |
| 290 | * synchronizing access to data. token_r is a re-entrant lock and thus useful |
| 291 | * for synchronizing access to data structures that may be manipulated in a |
| 292 | * recursive fashion. |
| 293 | * |
| 294 | * Returns the new reentrant mutex pointer or NULL in case of error |
| 295 | */ |
| 296 | xmlRMutexPtr |
| 297 | xmlNewRMutex(void) |
| 298 | { |
| 299 | xmlRMutexPtr tok; |
| 300 | |
| 301 | if ((tok = malloc(sizeof(xmlRMutex))) == NULL) |
| 302 | return (NULL); |
| 303 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 304 | if (libxml_is_threaded != 0) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 305 | pthread_mutex_init(&tok->lock, NULL); |
| 306 | tok->held = 0; |
| 307 | tok->waiters = 0; |
| 308 | pthread_cond_init(&tok->cv, NULL); |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 309 | } |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 310 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 311 | InitializeCriticalSection(&tok->cs); |
| 312 | tok->count = 0; |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 313 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 314 | if ((tok->lock = xmlNewMutex()) == NULL) { |
| 315 | free(tok); |
| 316 | return NULL; |
| 317 | } |
| 318 | tok->count = 0; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 319 | #endif |
| 320 | return (tok); |
| 321 | } |
| 322 | |
| 323 | /** |
Daniel Veillard | 01c13b5 | 2002-12-10 15:19:08 +0000 | [diff] [blame] | 324 | * xmlFreeRMutex: |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 325 | * @tok: the reentrant mutex |
| 326 | * |
| 327 | * xmlRFreeMutex() is used to reclaim resources associated with a |
| 328 | * reentrant mutex. |
| 329 | */ |
| 330 | void |
Daniel Veillard | 0ba5923 | 2002-02-10 13:20:39 +0000 | [diff] [blame] | 331 | xmlFreeRMutex(xmlRMutexPtr tok ATTRIBUTE_UNUSED) |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 332 | { |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 333 | if (tok == NULL) |
| 334 | return; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 335 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | a8b5413 | 2006-06-29 11:50:18 +0000 | [diff] [blame] | 336 | if (libxml_is_threaded != 0) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 337 | pthread_mutex_destroy(&tok->lock); |
| 338 | pthread_cond_destroy(&tok->cv); |
Daniel Veillard | a8b5413 | 2006-06-29 11:50:18 +0000 | [diff] [blame] | 339 | } |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 340 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 341 | DeleteCriticalSection(&tok->cs); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 342 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 343 | xmlFreeMutex(tok->lock); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 344 | #endif |
| 345 | free(tok); |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * xmlRMutexLock: |
| 350 | * @tok: the reentrant mutex |
| 351 | * |
| 352 | * xmlRMutexLock() is used to lock a libxml2 token_r. |
| 353 | */ |
| 354 | void |
Daniel Veillard | 5f1e1f8 | 2003-09-11 23:35:09 +0000 | [diff] [blame] | 355 | xmlRMutexLock(xmlRMutexPtr tok) |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 356 | { |
Daniel Veillard | 5f1e1f8 | 2003-09-11 23:35:09 +0000 | [diff] [blame] | 357 | if (tok == NULL) |
| 358 | return; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 359 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 360 | if (libxml_is_threaded == 0) |
| 361 | return; |
| 362 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 363 | pthread_mutex_lock(&tok->lock); |
| 364 | if (tok->held) { |
| 365 | if (pthread_equal(tok->tid, pthread_self())) { |
| 366 | tok->held++; |
| 367 | pthread_mutex_unlock(&tok->lock); |
| 368 | return; |
| 369 | } else { |
| 370 | tok->waiters++; |
| 371 | while (tok->held) |
| 372 | pthread_cond_wait(&tok->cv, &tok->lock); |
| 373 | tok->waiters--; |
| 374 | } |
| 375 | } |
| 376 | tok->tid = pthread_self(); |
| 377 | tok->held = 1; |
| 378 | pthread_mutex_unlock(&tok->lock); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 379 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 380 | EnterCriticalSection(&tok->cs); |
Daniel Veillard | 8854e46 | 2014-10-13 15:03:58 +0800 | [diff] [blame] | 381 | tok->count++; |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 382 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 383 | if (tok->lock->tid == find_thread(NULL)) { |
| 384 | tok->count++; |
| 385 | return; |
| 386 | } else { |
| 387 | xmlMutexLock(tok->lock); |
| 388 | tok->count = 1; |
| 389 | } |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 390 | #endif |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * xmlRMutexUnlock: |
| 395 | * @tok: the reentrant mutex |
| 396 | * |
| 397 | * xmlRMutexUnlock() is used to unlock a libxml2 token_r. |
| 398 | */ |
| 399 | void |
Daniel Veillard | 0ba5923 | 2002-02-10 13:20:39 +0000 | [diff] [blame] | 400 | xmlRMutexUnlock(xmlRMutexPtr tok ATTRIBUTE_UNUSED) |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 401 | { |
Daniel Veillard | 5f1e1f8 | 2003-09-11 23:35:09 +0000 | [diff] [blame] | 402 | if (tok == NULL) |
| 403 | return; |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 404 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 405 | if (libxml_is_threaded == 0) |
| 406 | return; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 407 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 408 | pthread_mutex_lock(&tok->lock); |
| 409 | tok->held--; |
| 410 | if (tok->held == 0) { |
| 411 | if (tok->waiters) |
| 412 | pthread_cond_signal(&tok->cv); |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 413 | memset(&tok->tid, 0, sizeof(tok->tid)); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 414 | } |
| 415 | pthread_mutex_unlock(&tok->lock); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 416 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | 8854e46 | 2014-10-13 15:03:58 +0800 | [diff] [blame] | 417 | if (tok->count > 0) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 418 | LeaveCriticalSection(&tok->cs); |
Daniel Veillard | 8854e46 | 2014-10-13 15:03:58 +0800 | [diff] [blame] | 419 | tok->count--; |
| 420 | } |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 421 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 422 | if (tok->lock->tid == find_thread(NULL)) { |
| 423 | tok->count--; |
| 424 | if (tok->count == 0) { |
| 425 | xmlMutexUnlock(tok->lock); |
| 426 | } |
| 427 | return; |
| 428 | } |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 429 | #endif |
| 430 | } |
| 431 | |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 432 | /** |
| 433 | * xmlGlobalInitMutexLock |
| 434 | * |
| 435 | * Makes sure that the global initialization mutex is initialized and |
| 436 | * locks it. |
| 437 | */ |
| 438 | void |
| 439 | __xmlGlobalInitMutexLock(void) |
| 440 | { |
| 441 | /* Make sure the global init lock is initialized and then lock it. */ |
| 442 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 443 | /* The mutex is statically initialized, so we just lock it. */ |
Daniel Richard G | 5706b6d | 2012-08-06 11:32:54 +0800 | [diff] [blame] | 444 | if (pthread_mutex_lock != NULL) |
Mike Hommey | e6f0509 | 2010-10-15 19:50:03 +0200 | [diff] [blame] | 445 | pthread_mutex_lock(&global_init_lock); |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 446 | #elif defined HAVE_WIN32_THREADS |
| 447 | LPCRITICAL_SECTION cs; |
| 448 | |
| 449 | /* Create a new critical section */ |
| 450 | if (global_init_lock == NULL) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 451 | cs = malloc(sizeof(CRITICAL_SECTION)); |
| 452 | if (cs == NULL) { |
| 453 | xmlGenericError(xmlGenericErrorContext, |
| 454 | "xmlGlobalInitMutexLock: out of memory\n"); |
| 455 | return; |
| 456 | } |
| 457 | InitializeCriticalSection(cs); |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 458 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 459 | /* Swap it into the global_init_lock */ |
Rob Richards | e967f0b | 2007-06-08 19:36:04 +0000 | [diff] [blame] | 460 | #ifdef InterlockedCompareExchangePointer |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 461 | InterlockedCompareExchangePointer(&global_init_lock, cs, NULL); |
| 462 | #else /* Use older void* version */ |
| 463 | InterlockedCompareExchange((void **) &global_init_lock, |
| 464 | (void *) cs, NULL); |
Rob Richards | e967f0b | 2007-06-08 19:36:04 +0000 | [diff] [blame] | 465 | #endif /* InterlockedCompareExchangePointer */ |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 466 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 467 | /* If another thread successfully recorded its critical |
| 468 | * section in the global_init_lock then discard the one |
| 469 | * allocated by this thread. */ |
| 470 | if (global_init_lock != cs) { |
| 471 | DeleteCriticalSection(cs); |
| 472 | free(cs); |
| 473 | } |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 474 | } |
| 475 | |
| 476 | /* Lock the chosen critical section */ |
| 477 | EnterCriticalSection(global_init_lock); |
| 478 | #elif defined HAVE_BEOS_THREADS |
| 479 | int32 sem; |
| 480 | |
| 481 | /* Allocate a new semaphore */ |
| 482 | sem = create_sem(1, "xmlGlobalinitMutex"); |
| 483 | |
| 484 | while (global_init_lock == -1) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 485 | if (atomic_add(&global_init_count, 1) == 0) { |
| 486 | global_init_lock = sem; |
| 487 | } else { |
| 488 | snooze(1); |
| 489 | atomic_add(&global_init_count, -1); |
| 490 | } |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | /* If another thread successfully recorded its critical |
| 494 | * section in the global_init_lock then discard the one |
| 495 | * allocated by this thread. */ |
| 496 | if (global_init_lock != sem) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 497 | delete_sem(sem); |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 498 | |
| 499 | /* Acquire the chosen semaphore */ |
| 500 | if (acquire_sem(global_init_lock) != B_NO_ERROR) { |
| 501 | #ifdef DEBUG_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 502 | xmlGenericError(xmlGenericErrorContext, |
| 503 | "xmlGlobalInitMutexLock():BeOS:Couldn't acquire semaphore\n"); |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 504 | #endif |
| 505 | } |
| 506 | #endif |
| 507 | } |
| 508 | |
| 509 | void |
| 510 | __xmlGlobalInitMutexUnlock(void) |
| 511 | { |
| 512 | #ifdef HAVE_PTHREAD_H |
Daniel Richard G | 5706b6d | 2012-08-06 11:32:54 +0800 | [diff] [blame] | 513 | if (pthread_mutex_unlock != NULL) |
Mike Hommey | e6f0509 | 2010-10-15 19:50:03 +0200 | [diff] [blame] | 514 | pthread_mutex_unlock(&global_init_lock); |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 515 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | 14d465d | 2008-03-24 11:12:55 +0000 | [diff] [blame] | 516 | if (global_init_lock != NULL) { |
| 517 | LeaveCriticalSection(global_init_lock); |
| 518 | } |
Daniel Veillard | fde5b0b | 2007-02-12 17:31:53 +0000 | [diff] [blame] | 519 | #elif defined HAVE_BEOS_THREADS |
| 520 | release_sem(global_init_lock); |
| 521 | #endif |
| 522 | } |
| 523 | |
Rob Richards | 91eb560 | 2007-11-16 10:54:59 +0000 | [diff] [blame] | 524 | /** |
| 525 | * xmlGlobalInitMutexDestroy |
| 526 | * |
| 527 | * Makes sure that the global initialization mutex is destroyed before |
| 528 | * application termination. |
| 529 | */ |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 530 | void |
| 531 | __xmlGlobalInitMutexDestroy(void) |
Rob Richards | 91eb560 | 2007-11-16 10:54:59 +0000 | [diff] [blame] | 532 | { |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 533 | #ifdef HAVE_PTHREAD_H |
| 534 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 535 | if (global_init_lock != NULL) { |
| 536 | DeleteCriticalSection(global_init_lock); |
| 537 | free(global_init_lock); |
| 538 | global_init_lock = NULL; |
Rob Richards | 91eb560 | 2007-11-16 10:54:59 +0000 | [diff] [blame] | 539 | } |
| 540 | #endif |
| 541 | } |
| 542 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 543 | /************************************************************************ |
| 544 | * * |
| 545 | * Per thread global state handling * |
| 546 | * * |
| 547 | ************************************************************************/ |
| 548 | |
Daniel Veillard | 8bdb91d | 2001-10-31 17:52:43 +0000 | [diff] [blame] | 549 | #ifdef LIBXML_THREAD_ENABLED |
Daniel Veillard | 01c3bd5 | 2004-10-22 13:16:10 +0000 | [diff] [blame] | 550 | #ifdef xmlLastError |
| 551 | #undef xmlLastError |
| 552 | #endif |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 553 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 554 | /** |
| 555 | * xmlFreeGlobalState: |
| 556 | * @state: a thread global state |
| 557 | * |
| 558 | * xmlFreeGlobalState() is called when a thread terminates with a non-NULL |
| 559 | * global state. It is is used here to reclaim memory resources. |
| 560 | */ |
| 561 | static void |
| 562 | xmlFreeGlobalState(void *state) |
| 563 | { |
Daniel Veillard | 01c3bd5 | 2004-10-22 13:16:10 +0000 | [diff] [blame] | 564 | xmlGlobalState *gs = (xmlGlobalState *) state; |
| 565 | |
| 566 | /* free any memory allocated in the thread's xmlLastError */ |
| 567 | xmlResetError(&(gs->xmlLastError)); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 568 | free(state); |
| 569 | } |
| 570 | |
| 571 | /** |
| 572 | * xmlNewGlobalState: |
| 573 | * |
| 574 | * xmlNewGlobalState() allocates a global state. This structure is used to |
| 575 | * hold all data for use by a thread when supporting backwards compatibility |
Daniel Veillard | cbaf399 | 2001-12-31 16:16:02 +0000 | [diff] [blame] | 576 | * of libxml2 to pre-thread-safe behaviour. |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 577 | * |
| 578 | * Returns the newly allocated xmlGlobalStatePtr or NULL in case of error |
| 579 | */ |
| 580 | static xmlGlobalStatePtr |
| 581 | xmlNewGlobalState(void) |
| 582 | { |
| 583 | xmlGlobalState *gs; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 584 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 585 | gs = malloc(sizeof(xmlGlobalState)); |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 586 | if (gs == NULL) { |
| 587 | xmlGenericError(xmlGenericErrorContext, |
| 588 | "xmlGetGlobalState: out of memory\n"); |
| 589 | return (NULL); |
| 590 | } |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 591 | |
William M. Brack | 8b2c7f1 | 2002-11-22 05:07:29 +0000 | [diff] [blame] | 592 | memset(gs, 0, sizeof(xmlGlobalState)); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 593 | xmlInitializeGlobalState(gs); |
| 594 | return (gs); |
| 595 | } |
Daniel Veillard | 8bdb91d | 2001-10-31 17:52:43 +0000 | [diff] [blame] | 596 | #endif /* LIBXML_THREAD_ENABLED */ |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 597 | |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 598 | #ifdef HAVE_PTHREAD_H |
Eric Zurcher | 243b034 | 2009-10-01 00:13:07 +0200 | [diff] [blame] | 599 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 600 | #if !defined(HAVE_COMPILER_TLS) |
| 601 | #if defined(LIBXML_STATIC) && !defined(LIBXML_STATIC_FOR_DLL) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 602 | typedef struct _xmlGlobalStateCleanupHelperParams { |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 603 | HANDLE thread; |
| 604 | void *memory; |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 605 | } xmlGlobalStateCleanupHelperParams; |
| 606 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 607 | static void XMLCDECL |
| 608 | xmlGlobalStateCleanupHelper(void *p) |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 609 | { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 610 | xmlGlobalStateCleanupHelperParams *params = |
| 611 | (xmlGlobalStateCleanupHelperParams *) p; |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 612 | WaitForSingleObject(params->thread, INFINITE); |
| 613 | CloseHandle(params->thread); |
| 614 | xmlFreeGlobalState(params->memory); |
| 615 | free(params); |
| 616 | _endthread(); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 617 | } |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 618 | #else /* LIBXML_STATIC && !LIBXML_STATIC_FOR_DLL */ |
| 619 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 620 | typedef struct _xmlGlobalStateCleanupHelperParams { |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 621 | void *memory; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 622 | struct _xmlGlobalStateCleanupHelperParams *prev; |
| 623 | struct _xmlGlobalStateCleanupHelperParams *next; |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 624 | } xmlGlobalStateCleanupHelperParams; |
| 625 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 626 | static xmlGlobalStateCleanupHelperParams *cleanup_helpers_head = NULL; |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 627 | static CRITICAL_SECTION cleanup_helpers_cs; |
| 628 | |
| 629 | #endif /* LIBXMLSTATIC && !LIBXML_STATIC_FOR_DLL */ |
| 630 | #endif /* HAVE_COMPILER_TLS */ |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 631 | #endif /* HAVE_WIN32_THREADS */ |
| 632 | |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 633 | #if defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 634 | |
William M. Brack | b1d5316 | 2003-11-18 06:54:40 +0000 | [diff] [blame] | 635 | /** |
| 636 | * xmlGlobalStateCleanup: |
| 637 | * @data: unused parameter |
| 638 | * |
| 639 | * Used for Beos only |
| 640 | */ |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 641 | void |
| 642 | xmlGlobalStateCleanup(void *data) |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 643 | { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 644 | void *globalval = tls_get(globalkey); |
| 645 | |
| 646 | if (globalval != NULL) |
| 647 | xmlFreeGlobalState(globalval); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 648 | } |
| 649 | #endif |
| 650 | |
Daniel Veillard | 01c13b5 | 2002-12-10 15:19:08 +0000 | [diff] [blame] | 651 | /** |
| 652 | * xmlGetGlobalState: |
| 653 | * |
| 654 | * xmlGetGlobalState() is called to retrieve the global state for a thread. |
| 655 | * |
| 656 | * Returns the thread global state or NULL in case of error |
| 657 | */ |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 658 | xmlGlobalStatePtr |
| 659 | xmlGetGlobalState(void) |
| 660 | { |
| 661 | #ifdef HAVE_PTHREAD_H |
| 662 | xmlGlobalState *globalval; |
| 663 | |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 664 | if (libxml_is_threaded == 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 665 | return (NULL); |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 666 | |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 667 | pthread_once(&once_control, xmlOnceInit); |
| 668 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 669 | if ((globalval = (xmlGlobalState *) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 670 | pthread_getspecific(globalkey)) == NULL) { |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 671 | xmlGlobalState *tsd = xmlNewGlobalState(); |
Daniel Veillard | 14d465d | 2008-03-24 11:12:55 +0000 | [diff] [blame] | 672 | if (tsd == NULL) |
| 673 | return(NULL); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 674 | |
| 675 | pthread_setspecific(globalkey, tsd); |
| 676 | return (tsd); |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 677 | } |
| 678 | return (globalval); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 679 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 680 | #if defined(HAVE_COMPILER_TLS) |
| 681 | if (!tlstate_inited) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 682 | tlstate_inited = 1; |
| 683 | xmlInitializeGlobalState(&tlstate); |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 684 | } |
| 685 | return &tlstate; |
| 686 | #else /* HAVE_COMPILER_TLS */ |
| 687 | xmlGlobalState *globalval; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 688 | xmlGlobalStateCleanupHelperParams *p; |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 689 | |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 690 | xmlOnceInit(); |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 691 | #if defined(LIBXML_STATIC) && !defined(LIBXML_STATIC_FOR_DLL) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 692 | globalval = (xmlGlobalState *) TlsGetValue(globalkey); |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 693 | #else |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 694 | p = (xmlGlobalStateCleanupHelperParams *) TlsGetValue(globalkey); |
| 695 | globalval = (xmlGlobalState *) (p ? p->memory : NULL); |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 696 | #endif |
| 697 | if (globalval == NULL) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 698 | xmlGlobalState *tsd = xmlNewGlobalState(); |
| 699 | |
| 700 | if (tsd == NULL) |
| 701 | return(NULL); |
| 702 | p = (xmlGlobalStateCleanupHelperParams *) |
| 703 | malloc(sizeof(xmlGlobalStateCleanupHelperParams)); |
| 704 | if (p == NULL) { |
| 705 | xmlGenericError(xmlGenericErrorContext, |
| 706 | "xmlGetGlobalState: out of memory\n"); |
Daniel Veillard | bf2ebff | 2009-01-18 14:57:04 +0000 | [diff] [blame] | 707 | xmlFreeGlobalState(tsd); |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 708 | return(NULL); |
| 709 | } |
| 710 | p->memory = tsd; |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 711 | #if defined(LIBXML_STATIC) && !defined(LIBXML_STATIC_FOR_DLL) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 712 | DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), |
| 713 | GetCurrentProcess(), &p->thread, 0, TRUE, |
| 714 | DUPLICATE_SAME_ACCESS); |
| 715 | TlsSetValue(globalkey, tsd); |
| 716 | _beginthread(xmlGlobalStateCleanupHelper, 0, p); |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 717 | #else |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 718 | EnterCriticalSection(&cleanup_helpers_cs); |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 719 | if (cleanup_helpers_head != NULL) { |
| 720 | cleanup_helpers_head->prev = p; |
| 721 | } |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 722 | p->next = cleanup_helpers_head; |
| 723 | p->prev = NULL; |
| 724 | cleanup_helpers_head = p; |
| 725 | TlsSetValue(globalkey, p); |
| 726 | LeaveCriticalSection(&cleanup_helpers_cs); |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 727 | #endif |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 728 | |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 729 | return (tsd); |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 730 | } |
| 731 | return (globalval); |
| 732 | #endif /* HAVE_COMPILER_TLS */ |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 733 | #elif defined HAVE_BEOS_THREADS |
| 734 | xmlGlobalState *globalval; |
| 735 | |
| 736 | xmlOnceInit(); |
| 737 | |
Daniel Veillard | 14d465d | 2008-03-24 11:12:55 +0000 | [diff] [blame] | 738 | if ((globalval = (xmlGlobalState *) tls_get(globalkey)) == NULL) { |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 739 | xmlGlobalState *tsd = xmlNewGlobalState(); |
Daniel Veillard | 14d465d | 2008-03-24 11:12:55 +0000 | [diff] [blame] | 740 | if (tsd == NULL) |
| 741 | return (NULL); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 742 | |
| 743 | tls_set(globalkey, tsd); |
| 744 | on_exit_thread(xmlGlobalStateCleanup, NULL); |
| 745 | return (tsd); |
| 746 | } |
| 747 | return (globalval); |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 748 | #else |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 749 | return (NULL); |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 750 | #endif |
| 751 | } |
| 752 | |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 753 | /************************************************************************ |
| 754 | * * |
| 755 | * Library wide thread interfaces * |
| 756 | * * |
| 757 | ************************************************************************/ |
| 758 | |
| 759 | /** |
Daniel Veillard | 3c01b1d | 2001-10-17 15:58:35 +0000 | [diff] [blame] | 760 | * xmlGetThreadId: |
| 761 | * |
| 762 | * xmlGetThreadId() find the current thread ID number |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 763 | * Note that this is likely to be broken on some platforms using pthreads |
| 764 | * as the specification doesn't mandate pthread_t to be an integer type |
Daniel Veillard | 3c01b1d | 2001-10-17 15:58:35 +0000 | [diff] [blame] | 765 | * |
| 766 | * Returns the current thread ID number |
| 767 | */ |
| 768 | int |
| 769 | xmlGetThreadId(void) |
| 770 | { |
| 771 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 772 | pthread_t id; |
| 773 | int ret; |
| 774 | |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 775 | if (libxml_is_threaded == 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 776 | return (0); |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 777 | id = pthread_self(); |
| 778 | /* horrible but preserves compat, see warning above */ |
| 779 | memcpy(&ret, &id, sizeof(ret)); |
| 780 | return (ret); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 781 | #elif defined HAVE_WIN32_THREADS |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 782 | return GetCurrentThreadId(); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 783 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 784 | return find_thread(NULL); |
Daniel Veillard | 3c01b1d | 2001-10-17 15:58:35 +0000 | [diff] [blame] | 785 | #else |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 786 | return ((int) 0); |
Daniel Veillard | 3c01b1d | 2001-10-17 15:58:35 +0000 | [diff] [blame] | 787 | #endif |
| 788 | } |
| 789 | |
| 790 | /** |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 791 | * xmlIsMainThread: |
| 792 | * |
Daniel Veillard | cbaf399 | 2001-12-31 16:16:02 +0000 | [diff] [blame] | 793 | * xmlIsMainThread() check whether the current thread is the main thread. |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 794 | * |
| 795 | * Returns 1 if the current thread is the main thread, 0 otherwise |
| 796 | */ |
| 797 | int |
| 798 | xmlIsMainThread(void) |
| 799 | { |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 800 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 801 | if (libxml_is_threaded == -1) |
| 802 | xmlInitThreads(); |
| 803 | if (libxml_is_threaded == 0) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 804 | return (1); |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 805 | pthread_once(&once_control, xmlOnceInit); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 806 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 807 | xmlOnceInit(); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 808 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 809 | xmlOnceInit(); |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 810 | #endif |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 811 | |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 812 | #ifdef DEBUG_THREADS |
| 813 | xmlGenericError(xmlGenericErrorContext, "xmlIsMainThread()\n"); |
| 814 | #endif |
| 815 | #ifdef HAVE_PTHREAD_H |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 816 | return (pthread_equal(mainthread,pthread_self())); |
Daniel Veillard | db0eb8d | 2002-01-13 13:35:00 +0000 | [diff] [blame] | 817 | #elif defined HAVE_WIN32_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 818 | return (mainthread == GetCurrentThreadId()); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 819 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 820 | return (mainthread == find_thread(NULL)); |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 821 | #else |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 822 | return (1); |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 823 | #endif |
| 824 | } |
| 825 | |
| 826 | /** |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 827 | * xmlLockLibrary: |
| 828 | * |
| 829 | * xmlLockLibrary() is used to take out a re-entrant lock on the libxml2 |
| 830 | * library. |
| 831 | */ |
| 832 | void |
| 833 | xmlLockLibrary(void) |
| 834 | { |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 835 | #ifdef DEBUG_THREADS |
| 836 | xmlGenericError(xmlGenericErrorContext, "xmlLockLibrary()\n"); |
| 837 | #endif |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 838 | xmlRMutexLock(xmlLibraryLock); |
| 839 | } |
| 840 | |
| 841 | /** |
| 842 | * xmlUnlockLibrary: |
| 843 | * |
| 844 | * xmlUnlockLibrary() is used to release a re-entrant lock on the libxml2 |
| 845 | * library. |
| 846 | */ |
| 847 | void |
| 848 | xmlUnlockLibrary(void) |
| 849 | { |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 850 | #ifdef DEBUG_THREADS |
| 851 | xmlGenericError(xmlGenericErrorContext, "xmlUnlockLibrary()\n"); |
| 852 | #endif |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 853 | xmlRMutexUnlock(xmlLibraryLock); |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * xmlInitThreads: |
| 858 | * |
| 859 | * xmlInitThreads() is used to to initialize all the thread related |
| 860 | * data of the libxml2 library. |
| 861 | */ |
| 862 | void |
| 863 | xmlInitThreads(void) |
| 864 | { |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 865 | #ifdef HAVE_PTHREAD_H |
| 866 | if (libxml_is_threaded == -1) { |
| 867 | if ((pthread_once != NULL) && |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 868 | (pthread_getspecific != NULL) && |
| 869 | (pthread_setspecific != NULL) && |
| 870 | (pthread_key_create != NULL) && |
Daniel Veillard | d4a3f24 | 2009-01-18 15:41:30 +0000 | [diff] [blame] | 871 | (pthread_key_delete != NULL) && |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 872 | (pthread_mutex_init != NULL) && |
| 873 | (pthread_mutex_destroy != NULL) && |
| 874 | (pthread_mutex_lock != NULL) && |
| 875 | (pthread_mutex_unlock != NULL) && |
| 876 | (pthread_cond_init != NULL) && |
Daniel Veillard | 2cba415 | 2008-08-27 11:45:41 +0000 | [diff] [blame] | 877 | (pthread_cond_destroy != NULL) && |
| 878 | (pthread_cond_wait != NULL) && |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 879 | (pthread_equal != NULL) && |
| 880 | (pthread_self != NULL) && |
| 881 | (pthread_cond_signal != NULL)) { |
| 882 | libxml_is_threaded = 1; |
| 883 | |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 884 | /* fprintf(stderr, "Running multithreaded\n"); */ |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 885 | } else { |
| 886 | |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 887 | /* fprintf(stderr, "Running without multithread\n"); */ |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 888 | libxml_is_threaded = 0; |
| 889 | } |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 890 | } |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 891 | #elif defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL)) |
| 892 | InitializeCriticalSection(&cleanup_helpers_cs); |
Daniel Veillard | dbfe05a | 2005-05-04 09:18:00 +0000 | [diff] [blame] | 893 | #endif |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 894 | } |
| 895 | |
| 896 | /** |
| 897 | * xmlCleanupThreads: |
| 898 | * |
| 899 | * xmlCleanupThreads() is used to to cleanup all the thread related |
| 900 | * data of the libxml2 library once processing has ended. |
Daniel Veillard | 0110120 | 2009-02-21 09:22:04 +0000 | [diff] [blame] | 901 | * |
| 902 | * WARNING: if your application is multithreaded or has plugin support |
| 903 | * calling this may crash the application if another thread or |
| 904 | * a plugin is still using libxml2. It's sometimes very hard to |
| 905 | * guess if libxml2 is in use in the application, some libraries |
| 906 | * or plugins may use it without notice. In case of doubt abstain |
| 907 | * from calling this function or do it just before calling exit() |
| 908 | * to avoid leak reports from valgrind ! |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 909 | */ |
| 910 | void |
| 911 | xmlCleanupThreads(void) |
| 912 | { |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 913 | #ifdef DEBUG_THREADS |
| 914 | xmlGenericError(xmlGenericErrorContext, "xmlCleanupThreads()\n"); |
| 915 | #endif |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 916 | #ifdef HAVE_PTHREAD_H |
| 917 | if ((libxml_is_threaded) && (pthread_key_delete != NULL)) |
| 918 | pthread_key_delete(globalkey); |
Friedrich Haubensak | 3f6cfbd | 2012-09-12 17:34:53 +0200 | [diff] [blame] | 919 | once_control = once_control_init; |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 920 | #elif defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL)) |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 921 | if (globalkey != TLS_OUT_OF_INDEXES) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 922 | xmlGlobalStateCleanupHelperParams *p; |
| 923 | |
| 924 | EnterCriticalSection(&cleanup_helpers_cs); |
| 925 | p = cleanup_helpers_head; |
| 926 | while (p != NULL) { |
| 927 | xmlGlobalStateCleanupHelperParams *temp = p; |
| 928 | |
| 929 | p = p->next; |
| 930 | xmlFreeGlobalState(temp->memory); |
| 931 | free(temp); |
| 932 | } |
| 933 | cleanup_helpers_head = 0; |
| 934 | LeaveCriticalSection(&cleanup_helpers_cs); |
| 935 | TlsFree(globalkey); |
| 936 | globalkey = TLS_OUT_OF_INDEXES; |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 937 | } |
| 938 | DeleteCriticalSection(&cleanup_helpers_cs); |
| 939 | #endif |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 940 | } |
Daniel Veillard | 6f35029 | 2001-10-14 09:56:15 +0000 | [diff] [blame] | 941 | |
Daniel Veillard | a9cce9c | 2003-09-29 13:20:24 +0000 | [diff] [blame] | 942 | #ifdef LIBXML_THREAD_ENABLED |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 943 | |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 944 | /** |
| 945 | * xmlOnceInit |
| 946 | * |
| 947 | * xmlOnceInit() is used to initialize the value of mainthread for use |
| 948 | * in other routines. This function should only be called using |
| 949 | * pthread_once() in association with the once_control variable to ensure |
| 950 | * that the function is only called once. See man pthread_once for more |
| 951 | * details. |
| 952 | */ |
| 953 | static void |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 954 | xmlOnceInit(void) |
| 955 | { |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 956 | #ifdef HAVE_PTHREAD_H |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 957 | (void) pthread_key_create(&globalkey, xmlFreeGlobalState); |
Daniel Veillard | e28313b | 2001-12-06 14:08:31 +0000 | [diff] [blame] | 958 | mainthread = pthread_self(); |
Daniel Veillard | 5fe9e9e | 2013-04-05 23:10:41 +0800 | [diff] [blame] | 959 | __xmlInitializeDict(); |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 960 | #elif defined(HAVE_WIN32_THREADS) |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 961 | if (!run_once.done) { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 962 | if (InterlockedIncrement(&run_once.control) == 1) { |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 963 | #if !defined(HAVE_COMPILER_TLS) |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 964 | globalkey = TlsAlloc(); |
Igor Zlatkovic | f2160a0 | 2002-10-31 15:58:42 +0000 | [diff] [blame] | 965 | #endif |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 966 | mainthread = GetCurrentThreadId(); |
Daniel Veillard | 5fe9e9e | 2013-04-05 23:10:41 +0800 | [diff] [blame] | 967 | __xmlInitializeDict(); |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 968 | run_once.done = 1; |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 969 | } else { |
Daniel Veillard | 62121e2 | 2005-02-24 15:38:52 +0000 | [diff] [blame] | 970 | /* Another thread is working; give up our slice and |
| 971 | * wait until they're done. */ |
| 972 | while (!run_once.done) |
| 973 | Sleep(0); |
| 974 | } |
| 975 | } |
Eric Zurcher | 243b034 | 2009-10-01 00:13:07 +0200 | [diff] [blame] | 976 | #elif defined HAVE_BEOS_THREADS |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 977 | if (atomic_add(&run_once_init, 1) == 0) { |
| 978 | globalkey = tls_allocate(); |
| 979 | tls_set(globalkey, NULL); |
| 980 | mainthread = find_thread(NULL); |
Daniel Veillard | 5fe9e9e | 2013-04-05 23:10:41 +0800 | [diff] [blame] | 981 | __xmlInitializeDict(); |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 982 | } else |
| 983 | atomic_add(&run_once_init, -1); |
Daniel Veillard | 82cb319 | 2003-10-29 13:39:15 +0000 | [diff] [blame] | 984 | #endif |
Daniel Veillard | b847864 | 2001-10-12 17:29:10 +0000 | [diff] [blame] | 985 | } |
Daniel Veillard | a9cce9c | 2003-09-29 13:20:24 +0000 | [diff] [blame] | 986 | #endif |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 987 | |
| 988 | /** |
William M. Brack | 7a82165 | 2003-08-15 07:27:40 +0000 | [diff] [blame] | 989 | * DllMain: |
| 990 | * @hinstDLL: handle to DLL instance |
| 991 | * @fdwReason: Reason code for entry |
| 992 | * @lpvReserved: generic pointer (depends upon reason code) |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 993 | * |
| 994 | * Entry point for Windows library. It is being used to free thread-specific |
| 995 | * storage. |
William M. Brack | 7a82165 | 2003-08-15 07:27:40 +0000 | [diff] [blame] | 996 | * |
| 997 | * Returns TRUE always |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 998 | */ |
Daniel Veillard | d87c5d1 | 2009-09-10 17:46:07 +0200 | [diff] [blame] | 999 | #ifdef HAVE_PTHREAD_H |
| 1000 | #elif defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL)) |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 1001 | #if defined(LIBXML_STATIC_FOR_DLL) |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 1002 | BOOL XMLCALL |
| 1003 | xmlDllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 1004 | #else |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 1005 | BOOL WINAPI |
| 1006 | DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 1007 | #endif |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 1008 | { |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 1009 | switch (fdwReason) { |
| 1010 | case DLL_THREAD_DETACH: |
| 1011 | if (globalkey != TLS_OUT_OF_INDEXES) { |
| 1012 | xmlGlobalState *globalval = NULL; |
| 1013 | xmlGlobalStateCleanupHelperParams *p = |
| 1014 | (xmlGlobalStateCleanupHelperParams *) |
| 1015 | TlsGetValue(globalkey); |
| 1016 | globalval = (xmlGlobalState *) (p ? p->memory : NULL); |
| 1017 | if (globalval) { |
| 1018 | xmlFreeGlobalState(globalval); |
| 1019 | TlsSetValue(globalkey, NULL); |
| 1020 | } |
| 1021 | if (p) { |
| 1022 | EnterCriticalSection(&cleanup_helpers_cs); |
| 1023 | if (p == cleanup_helpers_head) |
| 1024 | cleanup_helpers_head = p->next; |
| 1025 | else |
| 1026 | p->prev->next = p->next; |
| 1027 | if (p->next != NULL) |
| 1028 | p->next->prev = p->prev; |
| 1029 | LeaveCriticalSection(&cleanup_helpers_cs); |
| 1030 | free(p); |
| 1031 | } |
Daniel Veillard | d96f6d3 | 2003-10-07 21:25:12 +0000 | [diff] [blame] | 1032 | } |
Daniel Veillard | ddbe38b | 2008-03-18 08:24:25 +0000 | [diff] [blame] | 1033 | break; |
Igor Zlatkovic | d58a42d | 2003-05-17 10:55:15 +0000 | [diff] [blame] | 1034 | } |
| 1035 | return TRUE; |
| 1036 | } |
| 1037 | #endif |
Daniel Veillard | 5d4644e | 2005-04-01 13:11:58 +0000 | [diff] [blame] | 1038 | #define bottom_threads |
| 1039 | #include "elfgcchack.h" |