mirror of
https://github.com/Atmosphere-NX/Atmosphere
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105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <switch.h>
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#include <algorithm>
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#include <functional>
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#include <mutex>
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#include <stratosphere/waitablemanager.hpp>
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void WaitableManager::add_waitable(IWaitable *waitable) {
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std::scoped_lock lk{this->lock};
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this->to_add_waitables.push_back(waitable);
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waitable->set_manager(this);
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this->has_new_items = true;
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}
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void WaitableManager::process_internal(bool break_on_timeout) {
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std::vector<Handle> handles;
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int handle_index = 0;
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Result rc;
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while (1) {
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/* Add new items, if relevant. */
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if (this->has_new_items) {
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std::scoped_lock lk{this->lock};
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this->waitables.insert(this->waitables.end(), this->to_add_waitables.begin(), this->to_add_waitables.end());
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this->to_add_waitables.clear();
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this->has_new_items = false;
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}
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/* Sort waitables by priority. */
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std::sort(this->waitables.begin(), this->waitables.end(), IWaitable::compare);
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/* Copy out handles. */
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handles.resize(this->waitables.size());
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std::transform(this->waitables.begin(), this->waitables.end(), handles.begin(), [](IWaitable *w) { return w->get_handle(); });
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rc = svcWaitSynchronization(&handle_index, handles.data(), this->waitables.size(), this->timeout);
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if (R_SUCCEEDED(rc)) {
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/* Handle a signaled waitable. */
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/* TODO: What timeout should be passed here? */
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rc = this->waitables[handle_index]->handle_signaled(0);
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std::for_each(waitables.begin(), waitables.begin() + handle_index, std::mem_fn(&IWaitable::update_priority));
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} else if (rc == 0xEA01) {
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/* Timeout. */
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std::for_each(waitables.begin(), waitables.end(), std::mem_fn(&IWaitable::update_priority));
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if (break_on_timeout) {
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return;
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}
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} else if (rc != 0xF601) {
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/* TODO: Panic. When can this happen? */
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}
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if (rc == 0xF601) {
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/* handles[handle_index] was closed! */
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/* Close the handle. */
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svcCloseHandle(handles[handle_index]);
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IWaitable *to_delete = this->waitables[handle_index];
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/* If relevant, remove from waitables. */
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this->waitables.erase(this->waitables.begin() + handle_index);
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/* Delete it. */
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delete to_delete;
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std::for_each(waitables.begin(), waitables.begin() + handle_index, std::mem_fn(&IWaitable::update_priority));
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}
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/* Do deferred callback for each waitable. */
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for (auto & waitable : this->waitables) {
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if (waitable->get_deferred()) {
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waitable->handle_deferred();
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}
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}
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}
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}
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void WaitableManager::process() {
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WaitableManager::process_internal(false);
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}
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void WaitableManager::process_until_timeout() {
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WaitableManager::process_internal(true);
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}
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