From 4878d30d853a947ea22de2ac8aa2dca6c1035821 Mon Sep 17 00:00:00 2001 From: "Neal H. Walfield" Date: Thu, 12 May 2005 11:50:42 +0000 Subject: libpthread/ 2005-05-12 Neal H. Walfield * Makefile (SRCS): Add sem-close.c sem-destroy.c sem-getvalue.c sem-init.c sem-open.c sem-post.c sem-timedwait.c sem-trywait.c sem-unlink.c and sem-wait.c. (sysdeps_headers): Add semaphore.h bits/semaphore.h. * include/semaphore.h: New file. * sysdeps/generic/sem-close.c: New file. * sysdeps/generic/sem-destroy.c: New file. * sysdeps/generic/sem-getvalue.c: New file. * sysdeps/generic/sem-init.c: New file. * sysdeps/generic/sem-open.c: New file. * sysdeps/generic/sem-post.c: New file. * sysdeps/generic/sem-timedwait.c: New file. * sysdeps/generic/sem-trywait.c: New file. * sysdeps/generic/sem-unlink.c: New file. * sysdeps/generic/sem-wait.c: New file. * sysdeps/generic/bits/semaphore.h: New file. --- sysdeps/generic/sem-getvalue.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 sysdeps/generic/sem-getvalue.c (limited to 'sysdeps/generic/sem-getvalue.c') diff --git a/sysdeps/generic/sem-getvalue.c b/sysdeps/generic/sem-getvalue.c new file mode 100644 index 00000000..cb0439c4 --- /dev/null +++ b/sysdeps/generic/sem-getvalue.c @@ -0,0 +1,33 @@ +/* Get the value of a semaphore. Generic version. + Copyright (C) 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include + +int +__sem_getvalue (sem_t *restrict sem, int *restrict value) +{ + __pthread_spin_lock (&sem->__lock); + *value = sem->__value; + __pthread_spin_unlock (&sem->__lock); + + return 0; +} + +weak_alias (__sem_getvalue, sem_getvalue); -- cgit v1.2.3