mirror of
https://github.com/DaedalusX64/daedalus.git
synced 2025-04-02 10:21:48 -04:00
e2f3183177
* Perf critial structures needs to be C-array instead of c++ array * Temp fix only disable optimization in Core * fix a buffer overflow * Fix build on Linux
115 lines
3 KiB
C
115 lines
3 KiB
C
/*
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Copyright (C) 2007 StrmnNrmn
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef UTILITY_ATOMICPRIMITIVES_H_
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#define UTILITY_ATOMICPRIMITIVES_H_
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#include <stdlib.h>
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#include "Base/Types.h"
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#if defined( DAEDALUS_PSP )
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extern "C"
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{
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u32 _AtomicIncrement( volatile u32 * ptr );
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u32 _AtomicDecrement( volatile u32 * ptr );
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u32 _AtomicBitSet( volatile u32 * ptr, u32 and_bits, u32 or_bits );
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}
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inline u32 AtomicIncrement( volatile u32 * ptr )
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{
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return _AtomicIncrement( ptr );
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}
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inline u32 AtomicDecrement( volatile u32 * ptr )
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{
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return _AtomicDecrement( ptr );
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}
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inline u32 AtomicBitSet( volatile u32 * ptr, u32 and_bits, u32 or_bits )
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{
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return _AtomicBitSet( ptr, and_bits, or_bits );
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}
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#elif defined( DAEDALUS_W32 )
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#include <intrin.h>
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#pragma intrinsic (_InterlockedIncrement)
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#pragma intrinsic (_InterlockedDecrement)
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#pragma intrinsic (_InterlockedIncrement)
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inline u32 AtomicIncrement( volatile u32 * ptr )
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{
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return _InterlockedIncrement( reinterpret_cast< volatile long * >( ptr ) );
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}
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inline u32 AtomicDecrement( volatile u32 * ptr )
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{
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return _InterlockedDecrement( reinterpret_cast< volatile long * >( ptr ) );
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}
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inline u32 AtomicBitSet( volatile u32 * ptr, u32 and_bits, u32 or_bits )
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{
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u32 new_value;
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u32 orig_value;
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do
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{
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orig_value = *ptr;
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new_value = (orig_value & and_bits) | or_bits;
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}
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while ( _InterlockedCompareExchange( reinterpret_cast< volatile long * >( ptr ), new_value, orig_value ) != orig_value );
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return new_value;
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}
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// POSIX Atomics, Probably can just set this as default for platforms that don't need custom atomics for now.
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// This eventually will be replaced with a more modern set.
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#else
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// inline u32 AtomicIncrement( volatile u32 * ptr )
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// {
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// DAEDALUS_ASSERT(false, "FIXME");
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// return *ptr++;
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// }
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// inline u32 AtomicDecrement( volatile u32 * ptr )
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// {
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// DAEDALUS_ASSERT(false, "FIXME");
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// return *ptr--;
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// }
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inline u32 AtomicBitSet( volatile u32 * ptr, u32 and_bits, u32 or_bits )
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{
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u32 new_value;
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u32 orig_value;
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do {
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orig_value = __sync_fetch_and_or(ptr, or_bits); // Atomically OR or_bits into *ptr
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new_value = (orig_value & and_bits) | or_bits; // Calculate the new value
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} while (__sync_val_compare_and_swap(ptr, orig_value, new_value) != orig_value);
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return new_value;
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}
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#endif
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#endif // UTILITY_ATOMICPRIMITIVES_H_
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