120 lines
4.5 KiB
C
120 lines
4.5 KiB
C
/*
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Copyright 2005-2016 Intel Corporation. All Rights Reserved.
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This file is part of Threading Building Blocks. Threading Building Blocks is free software;
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you can redistribute it and/or modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation. Threading Building Blocks is
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distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details. You should have received a copy of
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the GNU General Public License along with Threading Building Blocks; if not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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As a special exception, you may use this file as part of a free software library without
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restriction. Specifically, if other files instantiate templates or use macros or inline
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functions from this file, or you compile this file and link it with other files to produce
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an executable, this file does not by itself cause the resulting executable to be covered
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by the GNU General Public License. This exception does not however invalidate any other
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reasons why the executable file might be covered by the GNU General Public License.
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*/
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// TODO: revise by comparing with mac_ppc.h
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#if !defined(__TBB_machine_H) || defined(__TBB_machine_xbox360_ppc_H)
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#error Do not #include this internal file directly; use public TBB headers instead.
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#endif
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#define __TBB_machine_xbox360_ppc_H
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#define NONET
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#define NOD3D
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#include "xtl.h"
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#include "ppcintrinsics.h"
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#if _MSC_VER >= 1300
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extern "C" void _MemoryBarrier();
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#pragma intrinsic(_MemoryBarrier)
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#define __TBB_control_consistency_helper() __isync()
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#define __TBB_acquire_consistency_helper() _MemoryBarrier()
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#define __TBB_release_consistency_helper() _MemoryBarrier()
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#endif
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#define __TBB_full_memory_fence() __sync()
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#define __TBB_WORDSIZE 4
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#define __TBB_ENDIANNESS __TBB_ENDIAN_BIG
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//todo: define __TBB_USE_FENCED_ATOMICS and define acquire/release primitives to maximize performance
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inline __int32 __TBB_machine_cmpswp4(volatile void *ptr, __int32 value, __int32 comparand ) {
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__sync();
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__int32 result = InterlockedCompareExchange((volatile LONG*)ptr, value, comparand);
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__isync();
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return result;
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}
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inline __int64 __TBB_machine_cmpswp8(volatile void *ptr, __int64 value, __int64 comparand )
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{
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__sync();
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__int64 result = InterlockedCompareExchange64((volatile LONG64*)ptr, value, comparand);
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__isync();
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return result;
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}
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#define __TBB_USE_GENERIC_PART_WORD_CAS 1
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#define __TBB_USE_GENERIC_FETCH_ADD 1
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#define __TBB_USE_GENERIC_FETCH_STORE 1
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#define __TBB_USE_GENERIC_HALF_FENCED_LOAD_STORE 1
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#define __TBB_USE_GENERIC_RELAXED_LOAD_STORE 1
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#define __TBB_USE_GENERIC_DWORD_LOAD_STORE 1
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#define __TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE 1
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#pragma optimize( "", off )
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inline void __TBB_machine_pause (__int32 delay )
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{
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for (__int32 i=0; i<delay; i++) {;};
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}
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#pragma optimize( "", on )
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#define __TBB_Yield() Sleep(0)
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#define __TBB_Pause(V) __TBB_machine_pause(V)
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// This port uses only 2 hardware threads for TBB on XBOX 360.
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// Others are left to sound etc.
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// Change the following mask to allow TBB use more HW threads.
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static const int __TBB_XBOX360_HARDWARE_THREAD_MASK = 0x0C;
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static inline int __TBB_XBOX360_DetectNumberOfWorkers()
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{
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char a[__TBB_XBOX360_HARDWARE_THREAD_MASK]; //compile time assert - at least one bit should be set always
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a[0]=0;
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return ((__TBB_XBOX360_HARDWARE_THREAD_MASK >> 0) & 1) +
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((__TBB_XBOX360_HARDWARE_THREAD_MASK >> 1) & 1) +
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((__TBB_XBOX360_HARDWARE_THREAD_MASK >> 2) & 1) +
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((__TBB_XBOX360_HARDWARE_THREAD_MASK >> 3) & 1) +
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((__TBB_XBOX360_HARDWARE_THREAD_MASK >> 4) & 1) +
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((__TBB_XBOX360_HARDWARE_THREAD_MASK >> 5) & 1) + 1; // +1 accommodates for the master thread
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}
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static inline int __TBB_XBOX360_GetHardwareThreadIndex(int workerThreadIndex)
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{
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workerThreadIndex %= __TBB_XBOX360_DetectNumberOfWorkers()-1;
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int m = __TBB_XBOX360_HARDWARE_THREAD_MASK;
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int index = 0;
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int skipcount = workerThreadIndex;
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while (true)
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{
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if ((m & 1)!=0)
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{
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if (skipcount==0) break;
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skipcount--;
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}
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m >>= 1;
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index++;
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}
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return index;
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}
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#define __TBB_HardwareConcurrency() __TBB_XBOX360_DetectNumberOfWorkers()
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