diff options
Diffstat (limited to 'pthreads/pthread_setspecific.c')
-rw-r--r-- | pthreads/pthread_setspecific.c | 336 |
1 files changed, 168 insertions, 168 deletions
diff --git a/pthreads/pthread_setspecific.c b/pthreads/pthread_setspecific.c index f06b69616..23aa81b5f 100644 --- a/pthreads/pthread_setspecific.c +++ b/pthreads/pthread_setspecific.c @@ -1,168 +1,168 @@ -/* - * pthread_setspecific.c - * - * Description: - * POSIX thread functions which implement thread-specific data (TSD). - * - * -------------------------------------------------------------------------- - * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright(C) 1998 John E. Bossom - * Copyright(C) 1999,2005 Pthreads-win32 contributors - * - * Contact Email: rpj@callisto.canberra.edu.au - * - * The current list of contributors is contained - * in the file CONTRIBUTORS included with the source - * code distribution. The list can also be seen at the - * following World Wide Web location: - * http://sources.redhat.com/pthreads-win32/contributors.html - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library in the file COPYING.LIB; - * if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include "pthread.h" -#include "implement.h" - - -int -pthread_setspecific (pthread_key_t key, const void *value) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function sets the value of the thread specific - * key in the calling thread. - * - * PARAMETERS - * key - * an instance of pthread_key_t - * value - * the value to set key to - * - * - * DESCRIPTION - * This function sets the value of the thread specific - * key in the calling thread. - * - * RESULTS - * 0 successfully set value - * EAGAIN could not set value - * ENOENT SERIOUS!! - * - * ------------------------------------------------------ - */ -{ - pthread_t self; - int result = 0; - - if (key != ptw32_selfThreadKey) - { - /* - * Using pthread_self will implicitly create - * an instance of pthread_t for the current - * thread if one wasn't explicitly created - */ - self = pthread_self (); - if (self.p == NULL) - { - return ENOENT; - } - } - else - { - /* - * Resolve catch-22 of registering thread with selfThread - * key - */ - ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey); - - if (sp == NULL) - { - if (value == NULL) - { - return ENOENT; - } - self = *((pthread_t *) value); - } - else - { - self = sp->ptHandle; - } - } - - result = 0; - - if (key != NULL) - { - if (self.p != NULL && key->destructor != NULL && value != NULL) - { - /* - * Only require associations if we have to - * call user destroy routine. - * Don't need to locate an existing association - * when setting data to NULL for WIN32 since the - * data is stored with the operating system; not - * on the association; setting assoc to NULL short - * circuits the search. - */ - ThreadKeyAssoc *assoc; - - if (pthread_mutex_lock(&(key->keyLock)) == 0) - { - ptw32_thread_t * sp = (ptw32_thread_t *) self.p; - - (void) pthread_mutex_lock(&(sp->threadLock)); - - assoc = (ThreadKeyAssoc *) sp->keys; - /* - * Locate existing association - */ - while (assoc != NULL) - { - if (assoc->key == key) - { - /* - * Association already exists - */ - break; - } - assoc = assoc->nextKey; - } - - /* - * create an association if not found - */ - if (assoc == NULL) - { - result = ptw32_tkAssocCreate (sp, key); - } - - (void) pthread_mutex_unlock(&(sp->threadLock)); - } - (void) pthread_mutex_unlock(&(key->keyLock)); - } - - if (result == 0) - { - if (!TlsSetValue (key->key, (LPVOID) value)) - { - result = EAGAIN; - } - } - } - - return (result); -} /* pthread_setspecific */ +/*
+ * pthread_setspecific.c
+ *
+ * Description:
+ * POSIX thread functions which implement thread-specific data (TSD).
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2005 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@callisto.canberra.edu.au
+ *
+ * The current list of contributors is contained
+ * in the file CONTRIBUTORS included with the source
+ * code distribution. The list can also be seen at the
+ * following World Wide Web location:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+
+int
+pthread_setspecific (pthread_key_t key, const void *value)
+ /*
+ * ------------------------------------------------------
+ * DOCPUBLIC
+ * This function sets the value of the thread specific
+ * key in the calling thread.
+ *
+ * PARAMETERS
+ * key
+ * an instance of pthread_key_t
+ * value
+ * the value to set key to
+ *
+ *
+ * DESCRIPTION
+ * This function sets the value of the thread specific
+ * key in the calling thread.
+ *
+ * RESULTS
+ * 0 successfully set value
+ * EAGAIN could not set value
+ * ENOENT SERIOUS!!
+ *
+ * ------------------------------------------------------
+ */
+{
+ pthread_t self;
+ int result = 0;
+
+ if (key != ptw32_selfThreadKey)
+ {
+ /*
+ * Using pthread_self will implicitly create
+ * an instance of pthread_t for the current
+ * thread if one wasn't explicitly created
+ */
+ self = pthread_self ();
+ if (self.p == NULL)
+ {
+ return ENOENT;
+ }
+ }
+ else
+ {
+ /*
+ * Resolve catch-22 of registering thread with selfThread
+ * key
+ */
+ ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
+
+ if (sp == NULL)
+ {
+ if (value == NULL)
+ {
+ return ENOENT;
+ }
+ self = *((pthread_t *) value);
+ }
+ else
+ {
+ self = sp->ptHandle;
+ }
+ }
+
+ result = 0;
+
+ if (key != NULL)
+ {
+ if (self.p != NULL && key->destructor != NULL && value != NULL)
+ {
+ /*
+ * Only require associations if we have to
+ * call user destroy routine.
+ * Don't need to locate an existing association
+ * when setting data to NULL for WIN32 since the
+ * data is stored with the operating system; not
+ * on the association; setting assoc to NULL short
+ * circuits the search.
+ */
+ ThreadKeyAssoc *assoc;
+
+ if (pthread_mutex_lock(&(key->keyLock)) == 0)
+ {
+ ptw32_thread_t * sp = (ptw32_thread_t *) self.p;
+
+ (void) pthread_mutex_lock(&(sp->threadLock));
+
+ assoc = (ThreadKeyAssoc *) sp->keys;
+ /*
+ * Locate existing association
+ */
+ while (assoc != NULL)
+ {
+ if (assoc->key == key)
+ {
+ /*
+ * Association already exists
+ */
+ break;
+ }
+ assoc = assoc->nextKey;
+ }
+
+ /*
+ * create an association if not found
+ */
+ if (assoc == NULL)
+ {
+ result = ptw32_tkAssocCreate (sp, key);
+ }
+
+ (void) pthread_mutex_unlock(&(sp->threadLock));
+ }
+ (void) pthread_mutex_unlock(&(key->keyLock));
+ }
+
+ if (result == 0)
+ {
+ if (!TlsSetValue (key->key, (LPVOID) value))
+ {
+ result = EAGAIN;
+ }
+ }
+ }
+
+ return (result);
+} /* pthread_setspecific */
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