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cellSysutil: drain callback queue at single step

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This way if a new callback is registered in a process,
it will not be executed immediately in the same loop.
Remove mutex, use lock-free queue.
This commit is contained in:
Nekotekina 2018-12-31 22:03:30 +03:00 committed by Ivan
parent 3b83e223d8
commit 7a4282b4c0
1 changed files with 13 additions and 30 deletions
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43
rpcs3/Emu/Cell/Modules/cellSysutil.cpp
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@ -6,43 +6,27 @@
#include "cellSysutil.h"
#include "Utilities/StrUtil.h"
#include <mutex>
#include <queue>
#include "Utilities/lockless.h"
LOG_CHANNEL(cellSysutil);
struct sysutil_cb_manager
{
std::mutex mutex;
std::array<std::pair<vm::ptr<CellSysutilCallback>, vm::ptr<void>>, 4> callbacks;
std::queue<std::function<s32(ppu_thread&)>> registered;
std::function<s32(ppu_thread&)> get_cb()
struct alignas(8) registered_cb
{
std::lock_guard lock(mutex);
vm::ptr<CellSysutilCallback> first;
vm::ptr<void> second;
};
if (registered.empty())
{
return nullptr;
}
atomic_t<registered_cb> callbacks[4]{};
auto func = std::move(registered.front());
registered.pop();
return func;
}
lf_queue<std::function<s32(ppu_thread&)>> registered;
};
extern void sysutil_register_cb(std::function<s32(ppu_thread&)>&& cb)
{
const auto cbm = fxm::get_always<sysutil_cb_manager>();
std::lock_guard lock(cbm->mutex);
cbm->registered.push(std::move(cb));
}
@ -50,12 +34,10 @@ extern void sysutil_send_system_cmd(u64 status, u64 param)
{
if (const auto cbm = fxm::get<sysutil_cb_manager>())
{
for (auto& cb : cbm->callbacks)
for (sysutil_cb_manager::registered_cb cb : cbm->callbacks)
{
if (cb.first)
{
std::lock_guard lock(cbm->mutex);
cbm->registered.push([=](ppu_thread& ppu) -> s32
{
// TODO: check it and find the source of the return value (void isn't equal to CELL_OK)
@ -244,10 +226,11 @@ error_code cellSysutilCheckCallback(ppu_thread& ppu)
const auto cbm = fxm::get_always<sysutil_cb_manager>();
while (auto func = cbm->get_cb())
for (auto list = cbm->registered.pop_all(); list; list = list->pop_all())
{
if (s32 res = func(ppu))
if (s32 res = list->get()(ppu))
{
// Currently impossible
return not_an_error(res);
}
@ -271,7 +254,7 @@ s32 cellSysutilRegisterCallback(s32 slot, vm::ptr<CellSysutilCallback> func, vm:
const auto cbm = fxm::get_always<sysutil_cb_manager>();
cbm->callbacks[slot] = std::make_pair(func, userdata);
cbm->callbacks[slot].store({func, userdata});
return CELL_OK;
}
@ -287,7 +270,7 @@ s32 cellSysutilUnregisterCallback(u32 slot)
const auto cbm = fxm::get_always<sysutil_cb_manager>();
cbm->callbacks[slot] = std::make_pair(vm::null, vm::null);
cbm->callbacks[slot].store({});
return CELL_OK;
}