libvirt/src/util/virhashcode.h
Daniel P. Berrangé 568a417224 Enforce a standard header file guard symbol name
Require that all headers are guarded by a symbol named

  LIBVIRT_$FILENAME

where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.

Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-12-14 10:47:13 +00:00

37 lines
1.3 KiB
C

/*
* virhashcode.h: hash code generation
*
* Copyright (C) 2012 Red Hat, Inc.
*
* This 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.
*
* This 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 this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* The hash code generation is based on the public domain MurmurHash3 from Austin Appleby:
* http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp
*
* We use only the 32 bit variant because the 2 produce different result while
* we need to produce the same result regardless of the architecture as
* clients can be both 64 or 32 bit at the same time.
*/
#ifndef LIBVIRT_VIRHASHCODE_H
# define LIBVIRT_VIRHASHCODE_H
# include "internal.h"
uint32_t virHashCodeGen(const void *key, size_t len, uint32_t seed)
ATTRIBUTE_NOINLINE;
#endif /* LIBVIRT_VIRHASHCODE_H */