s32 _sys_lwcond_queue_wait(PPUThread& ppu, u32 lwcond_id, u32 lwmutex_id, u64 timeout)
{
sys_lwcond.Log("_sys_lwcond_queue_wait(lwcond_id=0x%x, lwmutex_id=0x%x, timeout=0x%llx)", lwcond_id, lwmutex_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto cond = idm::get<lv2_lwcond_t>(lwcond_id);
const auto mutex = idm::get<lv2_lwmutex_t>(lwmutex_id);
if (!cond || !mutex)
{
return CELL_ESRCH;
}
// finalize unlocking the mutex
mutex->unlock(lv2_lock);
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, cond->sq);
// potential mutex waiter (not added immediately)
sleep_queue_entry_t mutex_waiter(ppu, cond->sq, defer_sleep);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout && waiter)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
// try to reown the mutex if timed out
if (mutex->signaled)
{
mutex->signaled--;
return CELL_EDEADLK;
}
else
{
return CELL_ETIMEDOUT;
}
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
// return cause
return ppu.GPR[3] ? CELL_EBUSY : CELL_OK;
}
s32 sys_rwlock_rlock(PPUThread& ppu, u32 rw_lock_id, u64 timeout)
{
sys_rwlock.Log("sys_rwlock_rlock(rw_lock_id=0x%x, timeout=0x%llx)", rw_lock_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto rwlock = idm::get<lv2_rwlock_t>(rw_lock_id);
if (!rwlock)
{
return CELL_ESRCH;
}
if (!rwlock->writer && rwlock->wsq.empty())
{
if (!++rwlock->readers)
{
throw EXCEPTION("Too many readers");
}
return CELL_OK;
}
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, rwlock->rsq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
if (rwlock->writer || !rwlock->readers)
{
throw EXCEPTION("Unexpected");
}
return CELL_OK;
}
s32 _sys_lwmutex_lock(PPUThread& ppu, u32 lwmutex_id, u64 timeout)
{
sys_lwmutex.Log("_sys_lwmutex_lock(lwmutex_id=0x%x, timeout=0x%llx)", lwmutex_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto mutex = idm::get<lv2_lwmutex_t>(lwmutex_id);
if (!mutex)
{
return CELL_ESRCH;
}
if (mutex->signaled)
{
mutex->signaled--;
return CELL_OK;
}
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, mutex->sq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
return CELL_OK;
}
s32 sys_semaphore_wait(PPUThread& ppu, u32 sem_id, u64 timeout)
{
sys_semaphore.Log("sys_semaphore_wait(sem_id=0x%x, timeout=0x%llx)", sem_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto sem = idm::get<lv2_sema_t>(sem_id);
if (!sem)
{
return CELL_ESRCH;
}
if (sem->value > 0)
{
sem->value--;
return CELL_OK;
}
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, sem->sq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
return CELL_OK;
}
s32 sys_rwlock_wlock(PPUThread& ppu, u32 rw_lock_id, u64 timeout)
{
sys_rwlock.Log("sys_rwlock_wlock(rw_lock_id=0x%x, timeout=0x%llx)", rw_lock_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto rwlock = idm::get<lv2_rwlock_t>(rw_lock_id);
if (!rwlock)
{
return CELL_ESRCH;
}
if (rwlock->writer.get() == &ppu)
{
return CELL_EDEADLK;
}
if (!rwlock->readers && !rwlock->writer)
{
rwlock->writer = std::static_pointer_cast<CPUThread>(ppu.shared_from_this());
return CELL_OK;
}
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, rwlock->wsq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
// if the last waiter quit the writer sleep queue, readers must acquire the lock
if (!rwlock->writer && rwlock->wsq.size() == 1)
{
if (rwlock->wsq.front().get() != &ppu)
{
throw EXCEPTION("Unexpected");
}
rwlock->wsq.clear();
rwlock->notify_all(lv2_lock);
}
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
if (rwlock->readers || rwlock->writer.get() != &ppu)
{
throw EXCEPTION("Unexpected");
}
return CELL_OK;
}
s32 sys_event_queue_receive(PPUThread& ppu, u32 equeue_id, vm::ptr<sys_event_t> dummy_event, u64 timeout)
{
sys_event.Log("sys_event_queue_receive(equeue_id=0x%x, *0x%x, timeout=0x%llx)", equeue_id, dummy_event, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto queue = idm::get<lv2_event_queue_t>(equeue_id);
if (!queue)
{
return CELL_ESRCH;
}
if (queue->type != SYS_PPU_QUEUE)
{
return CELL_EINVAL;
}
if (queue->events.size())
{
// event data is returned in registers (dummy_event is not used)
std::tie(ppu.GPR[4], ppu.GPR[5], ppu.GPR[6], ppu.GPR[7]) = queue->events.front();
queue->events.pop_front();
return CELL_OK;
}
// cause (if cancelled) will be returned in r3
ppu.GPR[3] = 0;
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, queue->sq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
if (ppu.GPR[3])
{
if (idm::check<lv2_event_queue_t>(equeue_id))
{
throw EXCEPTION("Unexpected");
}
return CELL_ECANCELED;
}
// r4-r7 registers must be set by push()
return CELL_OK;
}
s32 sys_mutex_lock(PPUThread& ppu, u32 mutex_id, u64 timeout)
{
sys_mutex.Log("sys_mutex_lock(mutex_id=0x%x, timeout=0x%llx)", mutex_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto mutex = idm::get<lv2_mutex_t>(mutex_id);
if (!mutex)
{
return CELL_ESRCH;
}
// check current ownership
if (mutex->owner.get() == &ppu)
{
if (mutex->recursive)
{
if (mutex->recursive_count == 0xffffffffu)
{
return CELL_EKRESOURCE;
}
mutex->recursive_count++;
return CELL_OK;
}
return CELL_EDEADLK;
}
// lock immediately if not locked
if (!mutex->owner)
{
mutex->owner = std::static_pointer_cast<CPUThread>(ppu.shared_from_this());
return CELL_OK;
}
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, mutex->sq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
// new owner must be set when unlocked
if (mutex->owner.get() != &ppu)
{
throw EXCEPTION("Unexpected mutex owner");
}
return CELL_OK;
}
s32 sys_event_flag_wait(PPUThread& ppu, u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result, u64 timeout)
{
sys_event_flag.Log("sys_event_flag_wait(id=0x%x, bitptn=0x%llx, mode=0x%x, result=*0x%x, timeout=0x%llx)", id, bitptn, mode, result, timeout);
const u64 start_time = get_system_time();
// If this syscall is called through the SC instruction, these registers must already contain corresponding values.
// But let's fixup them (in the case of explicit function call or something) because these values are used externally.
ppu.GPR[4] = bitptn;
ppu.GPR[5] = mode;
LV2_LOCK;
if (result) *result = 0; // This is very annoying.
if (!lv2_event_flag_t::check_mode(mode))
{
sys_event_flag.Error("sys_event_flag_wait(): unknown mode (0x%x)", mode);
return CELL_EINVAL;
}
const auto eflag = idm::get<lv2_event_flag_t>(id);
if (!eflag)
{
return CELL_ESRCH;
}
if (eflag->type == SYS_SYNC_WAITER_SINGLE && eflag->sq.size() > 0)
{
return CELL_EPERM;
}
if (eflag->check_pattern(bitptn, mode))
{
const u64 pattern = eflag->clear_pattern(bitptn, mode);
if (result) *result = pattern;
return CELL_OK;
}
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, eflag->sq);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
if (timeout)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
if (result) *result = eflag->pattern;
return CELL_ETIMEDOUT;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
// load pattern saved upon signaling
if (result)
{
*result = ppu.GPR[4];
}
// check cause
if (ppu.GPR[5] == 0)
{
return CELL_ECANCELED;
}
return CELL_OK;
}
s32 sys_cond_wait(PPUThread& ppu, u32 cond_id, u64 timeout)
{
sys_cond.Log("sys_cond_wait(cond_id=0x%x, timeout=%lld)", cond_id, timeout);
const u64 start_time = get_system_time();
LV2_LOCK;
const auto cond = Emu.GetIdManager().get<lv2_cond_t>(cond_id);
if (!cond)
{
return CELL_ESRCH;
}
// check current ownership
if (cond->mutex->owner.get() != &ppu)
{
return CELL_EPERM;
}
// save the recursive value
const u32 recursive_value = cond->mutex->recursive_count.exchange(0);
// unlock the mutex
cond->mutex->unlock(lv2_lock);
// add waiter; protocol is ignored in current implementation
sleep_queue_entry_t waiter(ppu, cond->sq);
// potential mutex waiter (not added immediately)
sleep_queue_entry_t mutex_waiter(ppu, cond->mutex->sq, defer_sleep);
while (!ppu.unsignal())
{
CHECK_EMU_STATUS;
// timeout is ignored if waiting on the cond var is already dropped
if (timeout && waiter)
{
const u64 passed = get_system_time() - start_time;
if (passed >= timeout)
{
// try to reown mutex and exit if timed out
if (!cond->mutex->owner)
{
cond->mutex->owner = ppu.shared_from_this();
break;
}
// drop condition variable and start waiting on the mutex queue
mutex_waiter.enter();
waiter.leave();
continue;
}
ppu.cv.wait_for(lv2_lock, std::chrono::microseconds(timeout - passed));
}
else
{
ppu.cv.wait(lv2_lock);
}
}
// mutex owner is restored after notification or unlocking
if (cond->mutex->owner.get() != &ppu)
{
throw EXCEPTION("Unexpected mutex owner");
}
// restore the recursive value
cond->mutex->recursive_count = recursive_value;
// check timeout (unclear)
if (timeout && get_system_time() - start_time > timeout)
{
return CELL_ETIMEDOUT;
}
return CELL_OK;
}