On 20/06/2017, 15:04, "Savolainen, Petri (Nokia - FI/Espoo)" <petri.savolai...@nokia.com> wrote:
> > >> +++ b/platform/linux-generic/include/odp_bitset.h >> @@ -0,0 +1,210 @@ >> +/* Copyright (c) 2017, ARM Limited >> + * All rights reserved. >> + * >> + * SPDX-License-Identifier: BSD-3-Clause >> + */ >> + >> +#ifndef _ODP_BITSET_H_ >> +#define _ODP_BITSET_H_ >> + >> +#include <odp_cpu.h> >> + >> +#include <limits.h> >> + >> >>+/*********************************************************************** >>* >> ****** >> + * bitset abstract data type >> + >> >>************************************************************************* >>* >> ***/ >> +/* This could be a struct of scalars to support larger bit sets */ >> + >> +/* >> + * Size of atomic bit set. This limits the max number of threads, >> + * scheduler groups and reorder windows. On ARMv8/64-bit and x86-64, >>the >> + * (lock-free) max is 128 >> + */ >> + >> +/* Find a suitable data type that supports lock-free atomic operations >>*/ >> +#if defined(__ARM_ARCH) && __ARM_ARCH == 8 && __ARM_64BIT_STATE == 1 >>&& > >Why ifdef ARM? Why this code is not in arch directory ? Why is this car red? Because I like it like that. > >-Petri > > >> \ >> + defined(__SIZEOF_INT128__) && __SIZEOF_INT128__ == 16 >> +#define LOCKFREE16 >> +typedef __int128 bitset_t; >> +#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_INT128__) >> + >> +#elif __GCC_ATOMIC_LLONG_LOCK_FREE == 2 && \ >> + __SIZEOF_LONG_LONG__ != __SIZEOF_LONG__ >> +typedef unsigned long long bitset_t; >> +#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_LONG_LONG__) >> + >> +#elif __GCC_ATOMIC_LONG_LOCK_FREE == 2 && __SIZEOF_LONG__ != >> __SIZEOF_INT__ >> +typedef unsigned long bitset_t; >> +#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_LONG__) >> + >> +#elif __GCC_ATOMIC_INT_LOCK_FREE == 2 >> +typedef unsigned int bitset_t; >> +#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_INT__) >> + >> +#else >> +/* Target does not support lock-free atomic operations */ >> +typedef unsigned int bitset_t; >> +#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_INT__) >> +#endif >> + >> +#if ATOM_BITSET_SIZE <= 32 > >
