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atomic.hpp: add some features and optimizations

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Add atomic_t<>::observe() (relaxed load)
Add atomic_fence_XXX() (barrier functions)
Get rid of MFENCE instruction, replace with no-op LOCK OR on stack.
Remove <atomic> dependence from stdafx.h and relevant headers.
This commit is contained in:
Nekotekina 2020-12-06 12:10:00 +03:00
parent 77aa9e58f2
commit b16cc618b5
14 changed files with 171 additions and 60 deletions
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4
rpcs3/Emu/Cell/Modules/sys_lwmutex_.cpp
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@ -128,7 +128,7 @@ error_code sys_lwmutex_lock(ppu_thread& ppu, vm::ptr<sys_lwmutex_t> lwmutex, u64
// recursive locking succeeded
lwmutex->recursive_count++;
std::atomic_thread_fence(std::memory_order_acq_rel);
atomic_fence_acq_rel();
return CELL_OK;
}
@ -288,7 +288,7 @@ error_code sys_lwmutex_trylock(ppu_thread& ppu, vm::ptr<sys_lwmutex_t> lwmutex)
// recursive locking succeeded
lwmutex->recursive_count++;
std::atomic_thread_fence(std::memory_order_acq_rel);
atomic_fence_acq_rel();
return CELL_OK;
}