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Implement cpu_thread::if_suspended

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Use it for opportunistic guaranteed GETLLAR execution (TSX-FA).
This commit is contained in:
Nekotekina 2020-10-17 14:55:31 +03:00
parent f5c575961f
commit adf50b7c4b
4 changed files with 61 additions and 6 deletions
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11
rpcs3/Emu/CPU/CPUThread.cpp
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@ -739,7 +739,7 @@ std::string cpu_thread::dump_misc() const
return fmt::format("Type: %s\n" "State: %s\n", typeid(*this).name(), state.load());
}
void cpu_thread::suspend_work::push(cpu_thread* _this) noexcept
bool cpu_thread::suspend_work::push(cpu_thread* _this, bool cancel_if_not_suspended) noexcept
{
// Can't allow pre-set wait bit (it'd be a problem)
verify(HERE), !_this || !(_this->state & cpu_flag::wait);
@ -758,6 +758,12 @@ void cpu_thread::suspend_work::push(cpu_thread* _this) noexcept
// Load current head
next = queue.load();
if (!next && cancel_if_not_suspended) [[unlikely]]
{
// Give up if not suspended
return false;
}
if (!_this && next)
{
// If _this == nullptr, it only works if this is the first workload pushed
@ -869,10 +875,11 @@ void cpu_thread::suspend_work::push(cpu_thread* _this) noexcept
}
_this->check_state();
return;
return true;
}
g_suspend_counter.notify_all();
return true;
}
void cpu_thread::stop_all() noexcept