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SPU/event queue: Atomically resume SPU group

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This commit is contained in:
Eladash 2021-07-28 07:36:46 +03:00 • committed by Ivan
parent 5816505e61
commit bf61c826d5
2 changed files with 98 additions and 66 deletions
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147
rpcs3/Emu/Cell/SPUThread.cpp
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@ -4265,6 +4265,40 @@ bool spu_thread::set_ch_value(u32 ch, u32 value)
fmt::throw_exception("Unknown/illegal channel in WRCH (ch=%d [%s], value=0x%x)", ch, ch < 128 ? spu_ch_name[ch] : "???", value);
}
extern void resume_spu_thread_group_from_waiting(spu_thread& spu)
{
const auto group = spu.group;
std::lock_guard lock(group->mutex);
if (group->run_state == SPU_THREAD_GROUP_STATUS_WAITING)
{
group->run_state = SPU_THREAD_GROUP_STATUS_RUNNING;
}
else if (group->run_state == SPU_THREAD_GROUP_STATUS_WAITING_AND_SUSPENDED)
{
group->run_state = SPU_THREAD_GROUP_STATUS_SUSPENDED;
}
for (auto& thread : group->threads)
{
if (thread)
{
if (thread.get() == &spu)
{
constexpr auto flags = cpu_flag::suspend + cpu_flag::signal;
ensure(((thread->state ^= flags) & flags) == cpu_flag::signal);
}
else
{
thread->state -= cpu_flag::suspend;
}
thread->state.notify_one(cpu_flag::suspend + cpu_flag::signal);
}
}
}
bool spu_thread::stop_and_signal(u32 code)
{
spu_log.trace("stop_and_signal(code=0x%x)", code);
@ -4293,6 +4327,23 @@ bool spu_thread::stop_and_signal(u32 code)
return true;
}
auto get_queue = [this](u32 spuq) -> const std::shared_ptr<lv2_event_queue>&
{
for (auto& v : this->spuq)
{
if (spuq == v.first)
{
if (lv2_obj::check(v.second))
{
return v.second;
}
}
}
static const std::shared_ptr<lv2_event_queue> empty;
return empty;
};
switch (code)
{
case 0x001:
@ -4338,6 +4389,8 @@ bool spu_thread::stop_and_signal(u32 code)
spu_function_logger logger(*this, "sys_spu_thread_receive_event");
std::shared_ptr<lv2_event_queue> queue;
while (true)
{
// Check group status, wait if necessary
@ -4355,7 +4408,15 @@ bool spu_thread::stop_and_signal(u32 code)
thread_ctrl::wait_on(state, old);;
}
std::lock_guard lock(group->mutex);
reader_lock{group->mutex}, queue = get_queue(spuq);
if (!queue)
{
return ch_in_mbox.set_values(1, CELL_EINVAL), true;
}
// Lock queue's mutex first, then group's mutex
std::scoped_lock lock(queue->mutex, group->mutex);
if (is_stopped())
{
@ -4368,27 +4429,12 @@ bool spu_thread::stop_and_signal(u32 code)
continue;
}
lv2_event_queue* queue = nullptr;
for (auto& v : this->spuq)
if (queue != get_queue(spuq))
{
if (spuq == v.first)
{
if (lv2_obj::check(v.second))
{
queue = v.second.get();
break;
}
}
// Try again
continue;
}
if (!queue)
{
return ch_in_mbox.set_values(1, CELL_EINVAL), true;
}
std::lock_guard qlock(queue->mutex);
if (!queue->exists)
{
return ch_in_mbox.set_values(1, CELL_EINVAL), true;
@ -4440,30 +4486,6 @@ bool spu_thread::stop_and_signal(u32 code)
thread_ctrl::wait_on(state, old);
}
std::lock_guard lock(group->mutex);
if (group->run_state == SPU_THREAD_GROUP_STATUS_WAITING)
{
group->run_state = SPU_THREAD_GROUP_STATUS_RUNNING;
}
else if (group->run_state == SPU_THREAD_GROUP_STATUS_WAITING_AND_SUSPENDED)
{
group->run_state = SPU_THREAD_GROUP_STATUS_SUSPENDED;
}
for (auto& thread : group->threads)
{
if (thread)
{
thread->state -= cpu_flag::suspend;
if (thread.get() != this)
{
thread->state.notify_one(cpu_flag::suspend);
}
}
}
return true;
}
@ -4486,29 +4508,36 @@ bool spu_thread::stop_and_signal(u32 code)
spu_log.trace("sys_spu_thread_tryreceive_event(spuq=0x%x)", spuq);
std::lock_guard lock(group->mutex);
std::shared_ptr<lv2_event_queue> queue;
lv2_event_queue* queue = nullptr;
reader_lock{group->mutex}, queue = get_queue(spuq);
for (auto& v : this->spuq)
std::unique_lock<shared_mutex> qlock, group_lock;
while (true)
{
if (spuq == v.first)
if (!queue)
{
if (lv2_obj::check(v.second))
{
queue = v.second.get();
break;
}
return ch_in_mbox.set_values(1, CELL_EINVAL), true;
}
// Lock queue's mutex first, then group's mutex
qlock = std::unique_lock{queue->mutex};
group_lock = std::unique_lock{group->mutex};
if (const auto& queue0 = get_queue(spuq); queue != queue0)
{
// Keep atleast one reference of the pointer so mutex unlock can work
const auto old_ref = std::exchange(queue, queue0);
group_lock.unlock();
qlock.unlock();
}
else
{
break;
}
}
if (!queue)
{
return ch_in_mbox.set_values(1, CELL_EINVAL), true;
}
std::lock_guard qlock(queue->mutex);
if (!queue->exists)
{
return ch_in_mbox.set_values(1, CELL_EINVAL), true;