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Improve vm::reservation_update 

Only respect unique lock.
This commit is contained in:
Nekotekina 2020-10-11 17:18:40 +03:00
parent 2f329cf7b5
commit 1885e4345c
4 changed files with 19 additions and 18 deletions
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2
rpcs3/Emu/Cell/PPUInterpreter.cpp
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@ -4487,7 +4487,7 @@ bool ppu_interpreter::STW(ppu_thread& ppu, ppu_opcode_t op)
//Insomniac engine v3 & v4 (newer R&C, Fuse, Resitance 3)
if (value == 0xAAAAAAAA) [[unlikely]]
{
vm::reservation_update(vm::cast(addr, HERE), 128);
vm::reservation_update(vm::cast(addr, HERE));
}
return true;

16
rpcs3/Emu/Memory/vm.cpp
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@ -80,15 +80,25 @@ namespace vm
// Memory pages
std::array<memory_page, 0x100000000 / 4096> g_pages{};
void reservation_update(u32 addr, u32 size, bool lsb)
std::pair<bool, u64> try_reservation_update(u32 addr)
{
// Update reservation info with new timestamp
auto& res = reservation_acquire(addr, 1);
const u64 rtime = res;
return {!(rtime & vm::rsrv_unique_lock) && res.compare_and_swap_test(rtime, rtime + 128), rtime};
}
void reservation_update(u32 addr)
{
u64 old = UINT64_MAX;
const auto cpu = get_current_cpu_thread();
while (true)
{
const auto [ok, rtime] = try_reservation_update(addr, size, lsb);
if (ok || old / 128 < rtime / 128)
const auto [ok, rtime] = try_reservation_update(addr);
if (ok || (old & -128) < (rtime & -128))
{
return;
}

11
rpcs3/Emu/Memory/vm_reservation.h
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@ -25,16 +25,7 @@ namespace vm
}
// Update reservation status
inline std::pair<bool, u64> try_reservation_update(u32 addr, u32 size, bool lsb = false)
{
// Update reservation info with new timestamp
auto& res = reservation_acquire(addr, size);
const u64 rtime = res;
return {!(rtime & 127) && res.compare_and_swap_test(rtime, rtime + 128), rtime};
}
void reservation_update(u32 addr, u32 size, bool lsb = false);
void reservation_update(u32 addr);
// Get reservation sync variable
inline atomic_t<u64>& reservation_notifier(u32 addr, u32 size)

4
rpcs3/rpcs3qt/register_editor_dialog.cpp
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@ -306,7 +306,7 @@ void register_editor_dialog::OnOkay(const std::shared_ptr<cpu_thread>& _cpu)
}
else if (reg == RESERVATION_LOST)
{
if (u32 raddr = ppu.raddr) vm::reservation_update(raddr, 128);
if (u32 raddr = ppu.raddr) vm::reservation_update(raddr);
return;
}
}
@ -357,7 +357,7 @@ void register_editor_dialog::OnOkay(const std::shared_ptr<cpu_thread>& _cpu)
}
else if (reg == RESERVATION_LOST)
{
if (u32 raddr = spu.raddr) vm::reservation_update(raddr, 128);
if (u32 raddr = spu.raddr) vm::reservation_update(raddr);
return;
}
}