From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vppinfra/smp.h | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 src/vppinfra/smp.h (limited to 'src/vppinfra/smp.h') diff --git a/src/vppinfra/smp.h b/src/vppinfra/smp.h new file mode 100644 index 00000000..7e703b3d --- /dev/null +++ b/src/vppinfra/smp.h @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + Copyright (c) 2001-2005 Eliot Dresselhaus + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be + included in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef included_clib_smp_h +#define included_clib_smp_h + +#include +#include /* for os_panic */ + +#define clib_smp_compare_and_swap(addr,new,old) __sync_val_compare_and_swap(addr,old,new) +#define clib_smp_swap(addr,new) __sync_lock_test_and_set(addr,new) +#define clib_smp_atomic_add(addr,increment) __sync_fetch_and_add(addr,increment) + +#if defined (i386) || defined (__x86_64__) +#define clib_smp_pause() do { asm volatile ("pause"); } while (0) +#endif + +#ifndef clib_smp_pause +#define clib_smp_pause() do { } while (0) +#endif + +#ifdef CLIB_UNIX +#include + +always_inline void +os_sched_yield (void) +{ + sched_yield (); +} +#else +always_inline void +os_sched_yield (void) +{ + clib_smp_pause (); +} +#endif + + +#endif /* included_clib_smp_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg