[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/nptl/sem_getvalue.c b/ap/libc/glibc/glibc-2.23/nptl/sem_getvalue.c
new file mode 100644
index 0000000..f2d903f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/nptl/sem_getvalue.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 2002-2016 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <semaphore.h>
+#include <shlib-compat.h>
+#include "semaphoreP.h"
+#include <atomic.h>
+
+
+int
+__new_sem_getvalue (sem_t *sem, int *sval)
+{
+ struct new_sem *isem = (struct new_sem *) sem;
+
+ /* XXX Check for valid SEM parameter. */
+ /* FIXME This uses relaxed MO, even though POSIX specifies that this function
+ should be linearizable. However, its debatable whether linearizability
+ is the right requirement. We need to follow up with POSIX and, if
+ necessary, use a stronger MO here and elsewhere (e.g., potentially
+ release MO in all places where we consume a token). */
+
+#if __HAVE_64B_ATOMICS
+ *sval = atomic_load_relaxed (&isem->data) & SEM_VALUE_MASK;
+#else
+ *sval = atomic_load_relaxed (&isem->value) >> SEM_VALUE_SHIFT;
+#endif
+
+ return 0;
+}
+versioned_symbol (libpthread, __new_sem_getvalue, sem_getvalue, GLIBC_2_1);
+#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
+int
+__old_sem_getvalue (sem_t *sem, int *sval)
+{
+ struct old_sem *isem = (struct old_sem *) sem;
+ *sval = isem->value;
+ return 0;
+}
+compat_symbol (libpthread, __old_sem_getvalue, sem_getvalue, GLIBC_2_0);
+#endif