libvirt/src/util/virrandom.h
Daniel P. Berrange 728cacc8ab annotate all mocked functions with noinline
CLang's optimizer is more aggressive at inlining functions than
gcc and so will often inline functions that our tests want to
mock-override. This causes the test to fail in bizarre ways.

We don't want to disable inlining completely, but we must at
least prevent inlining of mocked functions. Fortunately there
is a 'noinline' attribute that lets us control this per function.

A syntax check rule is added that parses tests/*mock.c to extract
the list of functions that are mocked (restricted to names starting
with 'vir' prefix). It then checks that src/*.h header file to
ensure it has a 'ATTRIBUTE_NOINLINE' annotation. This should prevent
use from bit-rotting in future.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-04-19 10:51:51 +01:00

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1.2 KiB
C

/*
* Copyright (C) 2012, 2016 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/>.
*
* Authors:
* Daniel P. Berrange <berrange@redhat.com>
*/
#ifndef __VIR_RANDOM_H__
# define __VIR_RANDOM_H__
# include "internal.h"
uint64_t virRandomBits(int nbits) ATTRIBUTE_NOINLINE;
double virRandom(void);
uint32_t virRandomInt(uint32_t max);
int virRandomBytes(unsigned char *buf, size_t buflen)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NOINLINE;
int virRandomGenerateWWN(char **wwn, const char *virt_type) ATTRIBUTE_NOINLINE;
#endif /* __VIR_RANDOM_H__ */