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on linux/gcc use weak definitions to avoid linking with pthread library on

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* Makefile.am configure.in threads.c: on linux/gcc use weak definitions
  to avoid linking with pthread library on non-threaded environments.
* xpath.c: applied patch from Mark Vakoc w.r.t. a buggy namespace
  list allocation.
Daniel
This commit is contained in:
Daniel Veillard
2005-05-04 09:18:00 +00:00
parent cbdf65157a
commit dbfe05aff4
5 changed files with 113 additions and 11 deletions
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105
threads.c
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@@ -46,6 +46,46 @@
/* #define DEBUG_THREADS */
#ifdef HAVE_PTHREAD_H
static int libxml_is_threaded = -1;
#ifdef __GNUC__
#ifdef linux
#if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (__GNUC__ > 3)
extern int pthread_once (pthread_once_t *__once_control,
void (*__init_routine) (void))
__attribute((weak));
extern void *pthread_getspecific (pthread_key_t __key)
__attribute((weak));
extern int pthread_setspecific (pthread_key_t __key,
__const void *__pointer)
__attribute((weak));
extern int pthread_key_create (pthread_key_t *__key,
void (*__destr_function) (void *))
__attribute((weak));
extern int pthread_mutex_init ()
__attribute((weak));
extern int pthread_mutex_destroy ()
__attribute((weak));
extern int pthread_mutex_lock ()
__attribute((weak));
extern int pthread_mutex_unlock ()
__attribute((weak));
extern int pthread_cond_init ()
__attribute((weak));
extern int pthread_equal ()
__attribute((weak));
extern pthread_t pthread_self ()
__attribute((weak));
extern int pthread_key_create ()
__attribute((weak));
extern int pthread_cond_signal ()
__attribute((weak));
#endif
#endif /* linux */
#endif /* __GNUC__ */
#endif /* HAVE_PTHREAD_H */
/*
* TODO: this module still uses malloc/free and not xmlMalloc/xmlFree
* to avoid some crazyness since xmlMalloc/xmlFree may actually
@@ -140,7 +180,8 @@ xmlNewMutex(void)
if ((tok = malloc(sizeof(xmlMutex))) == NULL)
return (NULL);
#ifdef HAVE_PTHREAD_H
pthread_mutex_init(&tok->lock, NULL);
if (libxml_is_threaded != 0)
pthread_mutex_init(&tok->lock, NULL);
#elif defined HAVE_WIN32_THREADS
tok->mutex = CreateMutex(NULL, FALSE, NULL);
#elif defined HAVE_BEOS_THREADS
@@ -166,7 +207,8 @@ xmlFreeMutex(xmlMutexPtr tok)
if (tok == NULL) return;
#ifdef HAVE_PTHREAD_H
pthread_mutex_destroy(&tok->lock);
if (libxml_is_threaded != 0)
pthread_mutex_destroy(&tok->lock);
#elif defined HAVE_WIN32_THREADS
CloseHandle(tok->mutex);
#elif defined HAVE_BEOS_THREADS
@@ -187,7 +229,8 @@ xmlMutexLock(xmlMutexPtr tok)
if (tok == NULL)
return;
#ifdef HAVE_PTHREAD_H
pthread_mutex_lock(&tok->lock);
if (libxml_is_threaded != 0)
pthread_mutex_lock(&tok->lock);
#elif defined HAVE_WIN32_THREADS
WaitForSingleObject(tok->mutex, INFINITE);
#elif defined HAVE_BEOS_THREADS
@@ -214,7 +257,8 @@ xmlMutexUnlock(xmlMutexPtr tok)
if (tok == NULL)
return;
#ifdef HAVE_PTHREAD_H
pthread_mutex_unlock(&tok->lock);
if (libxml_is_threaded != 0)
pthread_mutex_unlock(&tok->lock);
#elif defined HAVE_WIN32_THREADS
ReleaseMutex(tok->mutex);
#elif defined HAVE_BEOS_THREADS
@@ -243,10 +287,12 @@ xmlNewRMutex(void)
if ((tok = malloc(sizeof(xmlRMutex))) == NULL)
return (NULL);
#ifdef HAVE_PTHREAD_H
pthread_mutex_init(&tok->lock, NULL);
tok->held = 0;
tok->waiters = 0;
pthread_cond_init(&tok->cv, NULL);
if (libxml_is_threaded != 0) {
pthread_mutex_init(&tok->lock, NULL);
tok->held = 0;
tok->waiters = 0;
pthread_cond_init(&tok->cv, NULL);
}
#elif defined HAVE_WIN32_THREADS
InitializeCriticalSection(&tok->cs);
tok->count = 0;
@@ -270,8 +316,11 @@ xmlNewRMutex(void)
void
xmlFreeRMutex(xmlRMutexPtr tok ATTRIBUTE_UNUSED)
{
if (tok == NULL)
return;
#ifdef HAVE_PTHREAD_H
pthread_mutex_destroy(&tok->lock);
if (libxml_is_threaded != 0)
pthread_mutex_destroy(&tok->lock);
#elif defined HAVE_WIN32_THREADS
DeleteCriticalSection(&tok->cs);
#elif defined HAVE_BEOS_THREADS
@@ -292,6 +341,9 @@ xmlRMutexLock(xmlRMutexPtr tok)
if (tok == NULL)
return;
#ifdef HAVE_PTHREAD_H
if (libxml_is_threaded == 0)
return;
pthread_mutex_lock(&tok->lock);
if (tok->held) {
if (pthread_equal(tok->tid, pthread_self())) {
@@ -334,6 +386,9 @@ xmlRMutexUnlock(xmlRMutexPtr tok ATTRIBUTE_UNUSED)
if (tok == NULL)
return;
#ifdef HAVE_PTHREAD_H
if (libxml_is_threaded == 0)
return;
pthread_mutex_lock(&tok->lock);
tok->held--;
if (tok->held == 0) {
@@ -470,6 +525,9 @@ xmlGetGlobalState(void)
#ifdef HAVE_PTHREAD_H
xmlGlobalState *globalval;
if (libxml_is_threaded == 0)
return(NULL);
pthread_once(&once_control, xmlOnceInit);
if ((globalval = (xmlGlobalState *)
@@ -559,6 +617,8 @@ int
xmlGetThreadId(void)
{
#ifdef HAVE_PTHREAD_H
if (libxml_is_threaded == 0)
return(0);
return((int) pthread_self());
#elif defined HAVE_WIN32_THREADS
return GetCurrentThreadId();
@@ -580,6 +640,10 @@ int
xmlIsMainThread(void)
{
#ifdef HAVE_PTHREAD_H
if (libxml_is_threaded == -1)
xmlInitThreads();
if (libxml_is_threaded == 0)
return(1);
pthread_once(&once_control, xmlOnceInit);
#elif defined HAVE_WIN32_THREADS
xmlOnceInit ();
@@ -646,6 +710,29 @@ xmlInitThreads(void)
#if defined(HAVE_WIN32_THREADS) && !defined(HAVE_COMPILER_TLS) && (!defined(LIBXML_STATIC) || defined(LIBXML_STATIC_FOR_DLL))
InitializeCriticalSection(&cleanup_helpers_cs);
#endif
#ifdef HAVE_PTHREAD_H
if (libxml_is_threaded == -1) {
if ((pthread_once != NULL) &&
(pthread_getspecific != NULL) &&
(pthread_setspecific != NULL) &&
(pthread_key_create != NULL) &&
(pthread_mutex_init != NULL) &&
(pthread_mutex_destroy != NULL) &&
(pthread_mutex_lock != NULL) &&
(pthread_mutex_unlock != NULL) &&
(pthread_cond_init != NULL) &&
(pthread_equal != NULL) &&
(pthread_self != NULL) &&
(pthread_key_create != NULL) &&
(pthread_cond_signal != NULL)) {
libxml_is_threaded = 1;
/* fprintf(stderr, "Running multithreaded\n"); */
} else {
/* fprintf(stderr, "Running without multithread\n"); */
libxml_is_threaded = 0;
}
}
#endif
}
/**