libpthread/nptl: core of the "Native Posix Threading Library" for uClibc

targetting arm,sh,i386,mips,sparc for now

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/libpthread/nptl/pthread_rwlock_init.c b/libpthread/nptl/pthread_rwlock_init.c
new file mode 100644
index 000000000..f664dd810
--- /dev/null
+++ b/libpthread/nptl/pthread_rwlock_init.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "pthreadP.h"
+
+
+static const struct pthread_rwlockattr default_attr =
+  {
+    .lockkind = PTHREAD_RWLOCK_DEFAULT_NP,
+    .pshared = PTHREAD_PROCESS_PRIVATE
+  };
+
+
+int
+__pthread_rwlock_init (rwlock, attr)
+     pthread_rwlock_t *rwlock;
+     const pthread_rwlockattr_t *attr;
+{
+  const struct pthread_rwlockattr *iattr;
+
+  iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_attr;
+
+  rwlock->__data.__lock = 0;
+  rwlock->__data.__flags
+    = iattr->lockkind == PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP;
+  rwlock->__data.__nr_readers = 0;
+  rwlock->__data.__writer = 0;
+  rwlock->__data.__readers_wakeup = 0;
+  rwlock->__data.__writer_wakeup = 0;
+  rwlock->__data.__nr_readers_queued = 0;
+  rwlock->__data.__nr_writers_queued = 0;
+
+  return 0;
+}
+strong_alias (__pthread_rwlock_init, pthread_rwlock_init)