2
* threads.c: set of generic threading related routines
4
* See Copyright for the status of this software.
6
* Gary Pennington <Gary.Pennington@uk.sun.com>
15
#include <libxml/threads.h>
16
#include <libxml/globals.h>
18
#ifdef HAVE_SYS_TYPES_H
19
#include <sys/types.h>
29
#elif defined HAVE_WIN32_THREADS
31
#ifndef HAVE_COMPILER_TLS
36
#ifdef HAVE_BEOS_THREADS
45
/* #define DEBUG_THREADS */
49
static int libxml_is_threaded = -1;
52
#if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (__GNUC__ > 3)
53
extern int pthread_once (pthread_once_t *__once_control,
54
void (*__init_routine) (void))
56
extern void *pthread_getspecific (pthread_key_t __key)
58
extern int pthread_setspecific (pthread_key_t __key,
59
__const void *__pointer)
61
extern int pthread_key_create (pthread_key_t *__key,
62
void (*__destr_function) (void *))
64
extern int pthread_key_delete (pthread_key_t __key)
66
extern int pthread_mutex_init ()
68
extern int pthread_mutex_destroy ()
70
extern int pthread_mutex_lock ()
72
extern int pthread_mutex_unlock ()
74
extern int pthread_cond_init ()
76
extern int pthread_cond_destroy ()
78
extern int pthread_cond_wait ()
80
extern int pthread_equal ()
82
extern pthread_t pthread_self ()
84
extern int pthread_key_create ()
86
extern int pthread_key_delete ()
88
extern int pthread_cond_signal ()
93
#endif /* HAVE_PTHREAD_H */
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 ...
102
* xmlMutex are a simple mutual exception locks
105
#ifdef HAVE_PTHREAD_H
106
pthread_mutex_t lock;
107
#elif defined HAVE_WIN32_THREADS
109
#elif defined HAVE_BEOS_THREADS
118
* xmlRMutex are reentrant mutual exception locks
121
#ifdef HAVE_PTHREAD_H
122
pthread_mutex_t lock;
124
unsigned int waiters;
127
#elif defined HAVE_WIN32_THREADS
130
#elif defined HAVE_BEOS_THREADS
140
* This module still has some internal static data.
141
* - xmlLibraryLock a global lock
142
* - globalkey used for per-thread data
145
#ifdef HAVE_PTHREAD_H
146
static pthread_key_t globalkey;
147
static pthread_t mainthread;
148
static pthread_once_t once_control = PTHREAD_ONCE_INIT;
149
static pthread_mutex_t global_init_lock = PTHREAD_MUTEX_INITIALIZER;
150
#elif defined HAVE_WIN32_THREADS
151
#if defined(HAVE_COMPILER_TLS)
152
static __declspec(thread) xmlGlobalState tlstate;
153
static __declspec(thread) int tlstate_inited = 0;
154
#else /* HAVE_COMPILER_TLS */
155
static DWORD globalkey = TLS_OUT_OF_INDEXES;
156
#endif /* HAVE_COMPILER_TLS */
157
static DWORD mainthread;
161
} run_once = { 0, 0};
162
static volatile LPCRITICAL_SECTION global_init_lock = NULL;
164
/* endif HAVE_WIN32_THREADS */
165
#elif defined HAVE_BEOS_THREADS
167
thread_id mainthread = 0;
168
int32 run_once_init = 0;
169
static int32 global_init_lock = -1;
170
static vint32 global_init_count = 0;
173
static xmlRMutexPtr xmlLibraryLock = NULL;
175
#ifdef LIBXML_THREAD_ENABLED
176
static void xmlOnceInit(void);
182
* xmlNewMutex() is used to allocate a libxml2 token struct for use in
183
* synchronizing access to data.
185
* Returns a new simple mutex pointer or NULL in case of error
192
if ((tok = malloc(sizeof(xmlMutex))) == NULL)
194
#ifdef HAVE_PTHREAD_H
195
if (libxml_is_threaded != 0)
196
pthread_mutex_init(&tok->lock, NULL);
197
#elif defined HAVE_WIN32_THREADS
198
tok->mutex = CreateMutex(NULL, FALSE, NULL);
199
#elif defined HAVE_BEOS_THREADS
200
if ((tok->sem = create_sem(1, "xmlMutex")) < B_OK) {
211
* @tok: the simple mutex
213
* xmlFreeMutex() is used to reclaim resources associated with a libxml2 token
217
xmlFreeMutex(xmlMutexPtr tok)
222
#ifdef HAVE_PTHREAD_H
223
if (libxml_is_threaded != 0)
224
pthread_mutex_destroy(&tok->lock);
225
#elif defined HAVE_WIN32_THREADS
226
CloseHandle(tok->mutex);
227
#elif defined HAVE_BEOS_THREADS
228
delete_sem(tok->sem);
235
* @tok: the simple mutex
237
* xmlMutexLock() is used to lock a libxml2 token.
240
xmlMutexLock(xmlMutexPtr tok)
244
#ifdef HAVE_PTHREAD_H
245
if (libxml_is_threaded != 0)
246
pthread_mutex_lock(&tok->lock);
247
#elif defined HAVE_WIN32_THREADS
248
WaitForSingleObject(tok->mutex, INFINITE);
249
#elif defined HAVE_BEOS_THREADS
250
if (acquire_sem(tok->sem) != B_NO_ERROR) {
252
xmlGenericError(xmlGenericErrorContext,
253
"xmlMutexLock():BeOS:Couldn't aquire semaphore\n");
257
tok->tid = find_thread(NULL);
264
* @tok: the simple mutex
266
* xmlMutexUnlock() is used to unlock a libxml2 token.
269
xmlMutexUnlock(xmlMutexPtr tok)
273
#ifdef HAVE_PTHREAD_H
274
if (libxml_is_threaded != 0)
275
pthread_mutex_unlock(&tok->lock);
276
#elif defined HAVE_WIN32_THREADS
277
ReleaseMutex(tok->mutex);
278
#elif defined HAVE_BEOS_THREADS
279
if (tok->tid == find_thread(NULL)) {
281
release_sem(tok->sem);
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
294
* Returns the new reentrant mutex pointer or NULL in case of error
301
if ((tok = malloc(sizeof(xmlRMutex))) == NULL)
303
#ifdef HAVE_PTHREAD_H
304
if (libxml_is_threaded != 0) {
305
pthread_mutex_init(&tok->lock, NULL);
308
pthread_cond_init(&tok->cv, NULL);
310
#elif defined HAVE_WIN32_THREADS
311
InitializeCriticalSection(&tok->cs);
313
#elif defined HAVE_BEOS_THREADS
314
if ((tok->lock = xmlNewMutex()) == NULL) {
325
* @tok: the reentrant mutex
327
* xmlRFreeMutex() is used to reclaim resources associated with a
331
xmlFreeRMutex(xmlRMutexPtr tok ATTRIBUTE_UNUSED)
335
#ifdef HAVE_PTHREAD_H
336
if (libxml_is_threaded != 0) {
337
pthread_mutex_destroy(&tok->lock);
338
pthread_cond_destroy(&tok->cv);
340
#elif defined HAVE_WIN32_THREADS
341
DeleteCriticalSection(&tok->cs);
342
#elif defined HAVE_BEOS_THREADS
343
xmlFreeMutex(tok->lock);
350
* @tok: the reentrant mutex
352
* xmlRMutexLock() is used to lock a libxml2 token_r.
355
xmlRMutexLock(xmlRMutexPtr tok)
359
#ifdef HAVE_PTHREAD_H
360
if (libxml_is_threaded == 0)
363
pthread_mutex_lock(&tok->lock);
365
if (pthread_equal(tok->tid, pthread_self())) {
367
pthread_mutex_unlock(&tok->lock);
372
pthread_cond_wait(&tok->cv, &tok->lock);
376
tok->tid = pthread_self();
378
pthread_mutex_unlock(&tok->lock);
379
#elif defined HAVE_WIN32_THREADS
380
EnterCriticalSection(&tok->cs);
382
#elif defined HAVE_BEOS_THREADS
383
if (tok->lock->tid == find_thread(NULL)) {
387
xmlMutexLock(tok->lock);
395
* @tok: the reentrant mutex
397
* xmlRMutexUnlock() is used to unlock a libxml2 token_r.
400
xmlRMutexUnlock(xmlRMutexPtr tok ATTRIBUTE_UNUSED)
404
#ifdef HAVE_PTHREAD_H
405
if (libxml_is_threaded == 0)
408
pthread_mutex_lock(&tok->lock);
410
if (tok->held == 0) {
412
pthread_cond_signal(&tok->cv);
413
memset(&tok->tid, 0, sizeof(tok->tid));
415
pthread_mutex_unlock(&tok->lock);
416
#elif defined HAVE_WIN32_THREADS
418
LeaveCriticalSection(&tok->cs);
419
#elif defined HAVE_BEOS_THREADS
420
if (tok->lock->tid == find_thread(NULL)) {
422
if (tok->count == 0) {
423
xmlMutexUnlock(tok->lock);
431
* xmlGlobalInitMutexLock
433
* Makes sure that the global initialization mutex is initialized and
437
__xmlGlobalInitMutexLock(void)
439
/* Make sure the global init lock is initialized and then lock it. */
440
#ifdef HAVE_PTHREAD_H
441
/* The mutex is statically initialized, so we just lock it. */
442
if (pthread_mutex_lock != NULL)
443
pthread_mutex_lock(&global_init_lock);
444
#elif defined HAVE_WIN32_THREADS
445
LPCRITICAL_SECTION cs;
447
/* Create a new critical section */
448
if (global_init_lock == NULL) {
449
cs = malloc(sizeof(CRITICAL_SECTION));
451
xmlGenericError(xmlGenericErrorContext,
452
"xmlGlobalInitMutexLock: out of memory\n");
455
InitializeCriticalSection(cs);
457
/* Swap it into the global_init_lock */
458
#ifdef InterlockedCompareExchangePointer
459
InterlockedCompareExchangePointer(&global_init_lock, cs, NULL);
460
#else /* Use older void* version */
461
InterlockedCompareExchange((void **) &global_init_lock,
463
#endif /* InterlockedCompareExchangePointer */
465
/* If another thread successfully recorded its critical
466
* section in the global_init_lock then discard the one
467
* allocated by this thread. */
468
if (global_init_lock != cs) {
469
DeleteCriticalSection(cs);
474
/* Lock the chosen critical section */
475
EnterCriticalSection(global_init_lock);
476
#elif defined HAVE_BEOS_THREADS
479
/* Allocate a new semaphore */
480
sem = create_sem(1, "xmlGlobalinitMutex");
482
while (global_init_lock == -1) {
483
if (atomic_add(&global_init_count, 1) == 0) {
484
global_init_lock = sem;
487
atomic_add(&global_init_count, -1);
491
/* If another thread successfully recorded its critical
492
* section in the global_init_lock then discard the one
493
* allocated by this thread. */
494
if (global_init_lock != sem)
497
/* Acquire the chosen semaphore */
498
if (acquire_sem(global_init_lock) != B_NO_ERROR) {
500
xmlGenericError(xmlGenericErrorContext,
501
"xmlGlobalInitMutexLock():BeOS:Couldn't acquire semaphore\n");
509
__xmlGlobalInitMutexUnlock(void)
511
#ifdef HAVE_PTHREAD_H
512
if (pthread_mutex_unlock != NULL)
513
pthread_mutex_unlock(&global_init_lock);
514
#elif defined HAVE_WIN32_THREADS
515
if (global_init_lock != NULL) {
516
LeaveCriticalSection(global_init_lock);
518
#elif defined HAVE_BEOS_THREADS
519
release_sem(global_init_lock);
524
* xmlGlobalInitMutexDestroy
526
* Makes sure that the global initialization mutex is destroyed before
527
* application termination.
530
__xmlGlobalInitMutexDestroy(void)
532
#ifdef HAVE_PTHREAD_H
533
#elif defined HAVE_WIN32_THREADS
534
if (global_init_lock != NULL) {
535
DeleteCriticalSection(global_init_lock);
536
free(global_init_lock);
537
global_init_lock = NULL;
542
/************************************************************************
544
* Per thread global state handling *
546
************************************************************************/
548
#ifdef LIBXML_THREAD_ENABLED
554
* xmlFreeGlobalState:
555
* @state: a thread global state
557
* xmlFreeGlobalState() is called when a thread terminates with a non-NULL
558
* global state. It is is used here to reclaim memory resources.
561
xmlFreeGlobalState(void *state)
563
xmlGlobalState *gs = (xmlGlobalState *) state;
565
/* free any memory allocated in the thread's xmlLastError */
566
xmlResetError(&(gs->xmlLastError));
573
* xmlNewGlobalState() allocates a global state. This structure is used to
574
* hold all data for use by a thread when supporting backwards compatibility
575
* of libxml2 to pre-thread-safe behaviour.
577
* Returns the newly allocated xmlGlobalStatePtr or NULL in case of error
579
static xmlGlobalStatePtr
580
xmlNewGlobalState(void)
584
gs = malloc(sizeof(xmlGlobalState));
586
xmlGenericError(xmlGenericErrorContext,
587
"xmlGetGlobalState: out of memory\n");
591
memset(gs, 0, sizeof(xmlGlobalState));
592
xmlInitializeGlobalState(gs);
595
#endif /* LIBXML_THREAD_ENABLED */
597
#ifdef HAVE_PTHREAD_H
598
#elif defined HAVE_WIN32_THREADS
599
#if !defined(HAVE_COMPILER_TLS)
600
#if defined(LIBXML_STATIC) && !defined(LIBXML_STATIC_FOR_DLL)
601
typedef struct _xmlGlobalStateCleanupHelperParams {
604
} xmlGlobalStateCleanupHelperParams;
607
xmlGlobalStateCleanupHelper(void *p)
609
xmlGlobalStateCleanupHelperParams *params =
610
(xmlGlobalStateCleanupHelperParams *) p;
611
WaitForSingleObject(params->thread, INFINITE);
612
CloseHandle(params->thread);
613
xmlFreeGlobalState(params->memory);
617
#else /* LIBXML_STATIC && !LIBXML_STATIC_FOR_DLL */
619
typedef struct _xmlGlobalStateCleanupHelperParams {
621
struct _xmlGlobalStateCleanupHelperParams *prev;
622
struct _xmlGlobalStateCleanupHelperParams *next;
623
} xmlGlobalStateCleanupHelperParams;
625
static xmlGlobalStateCleanupHelperParams *cleanup_helpers_head = NULL;
626
static CRITICAL_SECTION cleanup_helpers_cs;
628
#endif /* LIBXMLSTATIC && !LIBXML_STATIC_FOR_DLL */
629
#endif /* HAVE_COMPILER_TLS */
630
#endif /* HAVE_WIN32_THREADS */
632
#if defined HAVE_BEOS_THREADS
635
* xmlGlobalStateCleanup:
636
* @data: unused parameter
641
xmlGlobalStateCleanup(void *data)
643
void *globalval = tls_get(globalkey);
645
if (globalval != NULL)
646
xmlFreeGlobalState(globalval);
653
* xmlGetGlobalState() is called to retrieve the global state for a thread.
655
* Returns the thread global state or NULL in case of error
658
xmlGetGlobalState(void)
660
#ifdef HAVE_PTHREAD_H
661
xmlGlobalState *globalval;
663
if (libxml_is_threaded == 0)
666
pthread_once(&once_control, xmlOnceInit);
668
if ((globalval = (xmlGlobalState *)
669
pthread_getspecific(globalkey)) == NULL) {
670
xmlGlobalState *tsd = xmlNewGlobalState();
674
pthread_setspecific(globalkey, tsd);
678
#elif defined HAVE_WIN32_THREADS
679
#if defined(HAVE_COMPILER_TLS)
680
if (!tlstate_inited) {
682
xmlInitializeGlobalState(&tlstate);
685
#else /* HAVE_COMPILER_TLS */
686
xmlGlobalState *globalval;
687
xmlGlobalStateCleanupHelperParams *p;
690
#if defined(LIBXML_STATIC) && !defined(LIBXML_STATIC_FOR_DLL)
691
globalval = (xmlGlobalState *) TlsGetValue(globalkey);
693
p = (xmlGlobalStateCleanupHelperParams *) TlsGetValue(globalkey);
694
globalval = (xmlGlobalState *) (p ? p->memory : NULL);
696
if (globalval == NULL) {
697
xmlGlobalState *tsd = xmlNewGlobalState();
701
p = (xmlGlobalStateCleanupHelperParams *)
702
malloc(sizeof(xmlGlobalStateCleanupHelperParams));
704
xmlGenericError(xmlGenericErrorContext,
705
"xmlGetGlobalState: out of memory\n");
706
xmlFreeGlobalState(tsd);
710
#if defined(LIBXML_STATIC) && !defined(LIBXML_STATIC_FOR_DLL)
711
DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
712
GetCurrentProcess(), &p->thread, 0, TRUE,
713
DUPLICATE_SAME_ACCESS);
714
TlsSetValue(globalkey, tsd);
715
_beginthread(xmlGlobalStateCleanupHelper, 0, p);
717
EnterCriticalSection(&cleanup_helpers_cs);
718
if (cleanup_helpers_head != NULL) {
719
cleanup_helpers_head->prev = p;
721
p->next = cleanup_helpers_head;
723
cleanup_helpers_head = p;
724
TlsSetValue(globalkey, p);
725
LeaveCriticalSection(&cleanup_helpers_cs);
731
#endif /* HAVE_COMPILER_TLS */
732
#elif defined HAVE_BEOS_THREADS
733
xmlGlobalState *globalval;
737
if ((globalval = (xmlGlobalState *) tls_get(globalkey)) == NULL) {
738
xmlGlobalState *tsd = xmlNewGlobalState();
742
tls_set(globalkey, tsd);
743
on_exit_thread(xmlGlobalStateCleanup, NULL);
752
/************************************************************************
754
* Library wide thread interfaces *
756
************************************************************************/
761
* xmlGetThreadId() find the current thread ID number
762
* Note that this is likely to be broken on some platforms using pthreads
763
* as the specification doesn't mandate pthread_t to be an integer type
765
* Returns the current thread ID number
770
#ifdef HAVE_PTHREAD_H
774
if (libxml_is_threaded == 0)
777
/* horrible but preserves compat, see warning above */
778
memcpy(&ret, &id, sizeof(ret));
780
#elif defined HAVE_WIN32_THREADS
781
return GetCurrentThreadId();
782
#elif defined HAVE_BEOS_THREADS
783
return find_thread(NULL);
792
* xmlIsMainThread() check whether the current thread is the main thread.
794
* Returns 1 if the current thread is the main thread, 0 otherwise
797
xmlIsMainThread(void)
799
#ifdef HAVE_PTHREAD_H
800
if (libxml_is_threaded == -1)
802
if (libxml_is_threaded == 0)
804
pthread_once(&once_control, xmlOnceInit);
805
#elif defined HAVE_WIN32_THREADS
807
#elif defined HAVE_BEOS_THREADS
812
xmlGenericError(xmlGenericErrorContext, "xmlIsMainThread()\n");
814
#ifdef HAVE_PTHREAD_H
815
return (pthread_equal(mainthread,pthread_self()));
816
#elif defined HAVE_WIN32_THREADS
817
return (mainthread == GetCurrentThreadId());
818
#elif defined HAVE_BEOS_THREADS
819
return (mainthread == find_thread(NULL));
828
* xmlLockLibrary() is used to take out a re-entrant lock on the libxml2
835
xmlGenericError(xmlGenericErrorContext, "xmlLockLibrary()\n");
837
xmlRMutexLock(xmlLibraryLock);
843
* xmlUnlockLibrary() is used to release a re-entrant lock on the libxml2
847
xmlUnlockLibrary(void)
850
xmlGenericError(xmlGenericErrorContext, "xmlUnlockLibrary()\n");
852
xmlRMutexUnlock(xmlLibraryLock);
858
* xmlInitThreads() is used to to initialize all the thread related
859
* data of the libxml2 library.
864
#ifdef HAVE_PTHREAD_H
865
if (libxml_is_threaded == -1) {
866
if ((pthread_once != NULL) &&
867
(pthread_getspecific != NULL) &&
868
(pthread_setspecific != NULL) &&
869
(pthread_key_create != NULL) &&
870
(pthread_key_delete != NULL) &&
871
(pthread_mutex_init != NULL) &&
872
(pthread_mutex_destroy != NULL) &&
873
(pthread_mutex_lock != NULL) &&
874
(pthread_mutex_unlock != NULL) &&
875
(pthread_cond_init != NULL) &&
876
(pthread_cond_destroy != NULL) &&
877
(pthread_cond_wait != NULL) &&
878
(pthread_equal != NULL) &&
879
(pthread_self != NULL) &&
880
(pthread_cond_signal != NULL)) {
881
libxml_is_threaded = 1;
883
/* fprintf(stderr, "Running multithreaded\n"); */
886
/* fprintf(stderr, "Running without multithread\n"); */
887
libxml_is_threaded = 0;
890
#elif defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL))
891
InitializeCriticalSection(&cleanup_helpers_cs);
898
* xmlCleanupThreads() is used to to cleanup all the thread related
899
* data of the libxml2 library once processing has ended.
901
* WARNING: if your application is multithreaded or has plugin support
902
* calling this may crash the application if another thread or
903
* a plugin is still using libxml2. It's sometimes very hard to
904
* guess if libxml2 is in use in the application, some libraries
905
* or plugins may use it without notice. In case of doubt abstain
906
* from calling this function or do it just before calling exit()
907
* to avoid leak reports from valgrind !
910
xmlCleanupThreads(void)
913
xmlGenericError(xmlGenericErrorContext, "xmlCleanupThreads()\n");
915
#ifdef HAVE_PTHREAD_H
916
if ((libxml_is_threaded) && (pthread_key_delete != NULL))
917
pthread_key_delete(globalkey);
918
once_control = PTHREAD_ONCE_INIT;
919
#elif defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL))
920
if (globalkey != TLS_OUT_OF_INDEXES) {
921
xmlGlobalStateCleanupHelperParams *p;
923
EnterCriticalSection(&cleanup_helpers_cs);
924
p = cleanup_helpers_head;
926
xmlGlobalStateCleanupHelperParams *temp = p;
929
xmlFreeGlobalState(temp->memory);
932
cleanup_helpers_head = 0;
933
LeaveCriticalSection(&cleanup_helpers_cs);
935
globalkey = TLS_OUT_OF_INDEXES;
937
DeleteCriticalSection(&cleanup_helpers_cs);
941
#ifdef LIBXML_THREAD_ENABLED
946
* xmlOnceInit() is used to initialize the value of mainthread for use
947
* in other routines. This function should only be called using
948
* pthread_once() in association with the once_control variable to ensure
949
* that the function is only called once. See man pthread_once for more
955
#ifdef HAVE_PTHREAD_H
956
(void) pthread_key_create(&globalkey, xmlFreeGlobalState);
957
mainthread = pthread_self();
958
#elif defined(HAVE_WIN32_THREADS)
959
if (!run_once.done) {
960
if (InterlockedIncrement(&run_once.control) == 1) {
961
#if !defined(HAVE_COMPILER_TLS)
962
globalkey = TlsAlloc();
964
mainthread = GetCurrentThreadId();
967
/* Another thread is working; give up our slice and
968
* wait until they're done. */
969
while (!run_once.done)
973
#elif defined HAVE_BEOS_THREADS
974
if (atomic_add(&run_once_init, 1) == 0) {
975
globalkey = tls_allocate();
976
tls_set(globalkey, NULL);
977
mainthread = find_thread(NULL);
979
atomic_add(&run_once_init, -1);
986
* @hinstDLL: handle to DLL instance
987
* @fdwReason: Reason code for entry
988
* @lpvReserved: generic pointer (depends upon reason code)
990
* Entry point for Windows library. It is being used to free thread-specific
993
* Returns TRUE always
995
#ifdef HAVE_PTHREAD_H
996
#elif defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL))
997
#if defined(LIBXML_STATIC_FOR_DLL)
999
xmlDllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1002
DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1005
switch (fdwReason) {
1006
case DLL_THREAD_DETACH:
1007
if (globalkey != TLS_OUT_OF_INDEXES) {
1008
xmlGlobalState *globalval = NULL;
1009
xmlGlobalStateCleanupHelperParams *p =
1010
(xmlGlobalStateCleanupHelperParams *)
1011
TlsGetValue(globalkey);
1012
globalval = (xmlGlobalState *) (p ? p->memory : NULL);
1014
xmlFreeGlobalState(globalval);
1015
TlsSetValue(globalkey, NULL);
1018
EnterCriticalSection(&cleanup_helpers_cs);
1019
if (p == cleanup_helpers_head)
1020
cleanup_helpers_head = p->next;
1022
p->prev->next = p->next;
1023
if (p->next != NULL)
1024
p->next->prev = p->prev;
1025
LeaveCriticalSection(&cleanup_helpers_cs);
1034
#define bottom_threads
1035
#include "elfgcchack.h"