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SPU/PPU reservations: Optimizations for reservation locks and check_state() (non-TSX)

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This commit is contained in:
Eladash 2020-06-05 12:36:28 +03:00 • committed by Ani
parent e09c4b72c8
commit d9750e8f9f
20 changed files with 251 additions and 252 deletions
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46
rpcs3/Emu/CPU/CPUThread.cpp
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@ -464,14 +464,8 @@ bool cpu_thread::check_state() noexcept
}
bool cpu_sleep_called = false;
bool cpu_flag_memory = false;
bool escape, retval;
if (!(state & cpu_flag::wait))
{
state += cpu_flag::wait;
}
while (true)
{
// Process all flags in a single atomic op
@ -490,20 +484,20 @@ bool cpu_thread::check_state() noexcept
if (!(flags & (cpu_flag::exit + cpu_flag::dbg_global_stop + cpu_flag::ret + cpu_flag::stop)))
{
// Check pause flags which hold thread inside check_state
if (flags & (cpu_flag::pause + cpu_flag::suspend + cpu_flag::dbg_global_pause + cpu_flag::dbg_pause))
if (flags & (cpu_flag::pause + cpu_flag::suspend + cpu_flag::dbg_global_pause + cpu_flag::dbg_pause + cpu_flag::memory))
{
if (!(flags & cpu_flag::wait))
{
flags += cpu_flag::wait;
store = true;
}
escape = false;
return store;
}
if (flags & cpu_flag::memory)
if (flags & cpu_flag::wait)
{
// wait flag will be cleared later (optimization)
cpu_flag_memory = true;
}
else
{
AUDIT(!cpu_flag_memory);
flags -= cpu_flag::wait;
store = true;
}
@ -512,7 +506,12 @@ bool cpu_thread::check_state() noexcept
}
else
{
cpu_flag_memory = false;
if (!(flags & cpu_flag::wait))
{
flags += cpu_flag::wait;
store = true;
}
retval = true;
}
@ -529,17 +528,6 @@ bool cpu_thread::check_state() noexcept
if (escape)
{
if (cpu_flag_memory)
{
cpu_mem();
if (state & (cpu_flag::pause + cpu_flag::memory)) [[unlikely]]
{
state += cpu_flag::wait;
continue;
}
}
return retval;
}
else if (!cpu_sleep_called && state0 & cpu_flag::suspend)
@ -555,6 +543,12 @@ bool cpu_thread::check_state() noexcept
}
else
{
if (state0 == (cpu_flag::memory + cpu_flag::wait))
{
vm::passive_lock(*this);
continue;
}
// If only cpu_flag::pause was set, notification won't arrive
g_fxo->get<cpu_counter>()->cpu_suspend_lock.lock_unlock();
}