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+/*
+ * pthread_attr_init.c
+ *
+ * Description:
+ * This translation unit implements operations on thread attribute objects.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2002 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@ise.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_attr_init(pthread_attr_t *attr)
+ /*
+ * ------------------------------------------------------
+ * DOCPUBLIC
+ * Initializes a thread attributes object with default
+ * attributes.
+ *
+ * PARAMETERS
+ * attr
+ * pointer to an instance of pthread_attr_t
+ *
+ *
+ * DESCRIPTION
+ * Initializes a thread attributes object with default
+ * attributes.
+ *
+ * NOTES:
+ * 1) Used to define thread attributes
+ *
+ * RESULTS
+ * 0 successfully initialized attr,
+ * ENOMEM insufficient memory for attr.
+ *
+ * ------------------------------------------------------
+ */
+{
+ pthread_attr_t attr_result;
+
+ if (attr == NULL)
+ {
+ /* This is disallowed. */
+ return EINVAL;
+ }
+
+ attr_result = (pthread_attr_t) malloc (sizeof (*attr_result));
+
+ if (attr_result == NULL)
+ {
+ return ENOMEM;
+ }
+
+#ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ /*
+ * Default to zero size. Unless changed explicitly this
+ * will allow Win32 to set the size to that of the
+ * main thread.
+ */
+ attr_result->stacksize = 0;
+#endif
+
+#ifdef _POSIX_THREAD_ATTR_STACKADDR
+ /* FIXME: Set this to something sensible when we support it. */
+ attr_result->stackaddr = NULL;
+#endif
+
+ attr_result->detachstate = PTHREAD_CREATE_JOINABLE;
+
+#if HAVE_SIGSET_T
+ memset(&(attr_result->sigmask), 0, sizeof(sigset_t));
+#endif /* HAVE_SIGSET_T */
+
+ /*
+ * Win32 sets new threads to THREAD_PRIORITY_NORMAL and
+ * not to that of the parent thread. We choose to default to
+ * this arrangement.
+ */
+ attr_result->param.sched_priority = THREAD_PRIORITY_NORMAL;
+ attr_result->inheritsched = PTHREAD_EXPLICIT_SCHED;
+ attr_result->contentionscope = PTHREAD_SCOPE_SYSTEM;
+
+ attr_result->valid = PTW32_ATTR_VALID;
+
+ *attr = attr_result;
+
+ return 0;
+}
+