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// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/kernel/k_hardware_timer.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_common.h"
#include "core/hle/service/os/multi_wait.h"
namespace Service {
MultiWait::MultiWait() = default;
MultiWait::~MultiWait() = default;
MultiWaitHolder* MultiWait::WaitAny(Kernel::KernelCore& kernel) {
return this->TimedWaitImpl(kernel, -1);
}
MultiWaitHolder* MultiWait::TryWaitAny(Kernel::KernelCore& kernel) {
return this->TimedWaitImpl(kernel, 0);
}
MultiWaitHolder* MultiWait::TimedWaitAny(Kernel::KernelCore& kernel, s64 timeout_ns) {
return this->TimedWaitImpl(kernel, kernel.HardwareTimer().GetTick() + timeout_ns);
}
MultiWaitHolder* MultiWait::TimedWaitImpl(Kernel::KernelCore& kernel, s64 timeout_tick) {
std::array<MultiWaitHolder*, Kernel::Svc::ArgumentHandleCountMax> holders{};
std::array<Kernel::KSynchronizationObject*, Kernel::Svc::ArgumentHandleCountMax> objects{};
s32 out_index = -1;
s32 num_objects = 0;
for (auto it = m_wait_list.begin(); it != m_wait_list.end(); it++) {
ASSERT(num_objects < Kernel::Svc::ArgumentHandleCountMax);
holders[num_objects] = std::addressof(*it);
objects[num_objects] = it->GetNativeHandle();
num_objects++;
}
Kernel::KSynchronizationObject::Wait(kernel, std::addressof(out_index), objects.data(),
num_objects, timeout_tick);
if (out_index == -1) {
return nullptr;
} else {
return holders[out_index];
}
}
void MultiWait::MoveAll(MultiWait* other) {
while (!other->m_wait_list.empty()) {
MultiWaitHolder& holder = other->m_wait_list.front();
holder.UnlinkFromMultiWait();
holder.LinkToMultiWait(this);
}
}
} // namespace Service
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