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, 45 insertions, 0 deletions

diff --git a/libpthread/nptl/pthread_mutexattr_setpshared.c b/libpthread/nptl/pthread_mutexattr_setpshared.c
new file mode 100644
index 000000000..5f2cf417e
--- /dev/null
+++ b/libpthread/nptl/pthread_mutexattr_setpshared.c
@@ -0,0 +1,45 @@
+/* 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 <errno.h>
+#include <pthreadP.h>
+
+
+int
+pthread_mutexattr_setpshared (attr, pshared)
+     pthread_mutexattr_t *attr;
+     int pshared;
+{
+  struct pthread_mutexattr *iattr;
+
+  if (pshared != PTHREAD_PROCESS_PRIVATE
+      && __builtin_expect (pshared != PTHREAD_PROCESS_SHARED, 0))
+    return EINVAL;
+
+  iattr = (struct pthread_mutexattr *) attr;
+
+  /* We use bit 31 to signal whether the mutex is going to be
+     process-shared or not.  */
+  if (pshared == PTHREAD_PROCESS_PRIVATE)
+    iattr->mutexkind &= ~0x80000000;
+  else
+    iattr->mutexkind |= 0x80000000;
+
+  return 0;
+}