mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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119 lines
4.2 KiB
C++
119 lines
4.2 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/multithreadedwaitablemanager.hpp>
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void MultiThreadedWaitableManager::process() {
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Result rc;
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for (unsigned int i = 0; i < num_threads; i++) {
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if (R_FAILED((rc = threadStart(&threads[i])))) {
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fatalSimple(rc);
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}
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}
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MultiThreadedWaitableManager::thread_func(this);
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}
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void MultiThreadedWaitableManager::process_until_timeout() {
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/* TODO: Panic. */
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}
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void MultiThreadedWaitableManager::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->new_waitable_event->signal_event();
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}
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IWaitable *MultiThreadedWaitableManager::get_waitable() {
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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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std::scoped_lock lk{this->get_waitable_lock};
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while (1) {
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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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IWaitable *w = this->waitables[handle_index];
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if (R_SUCCEEDED(rc)) {
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std::for_each(waitables.begin(), waitables.begin() + handle_index, std::mem_fn(&IWaitable::update_priority));
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this->waitables.erase(this->waitables.begin() + handle_index);
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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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} else if (rc != 0xF601 && rc != 0xE401) {
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/* TODO: Panic. When can this happen? */
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} else {
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std::for_each(waitables.begin(), waitables.begin() + handle_index, std::mem_fn(&IWaitable::update_priority));
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this->waitables.erase(this->waitables.begin() + handle_index);
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delete w;
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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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/* Return waitable. */
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if (R_SUCCEEDED(rc)) {
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if (w == this->new_waitable_event) {
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w->handle_signaled(0);
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this->waitables.push_back(w);
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} else {
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return w;
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}
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}
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}
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}
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Result MultiThreadedWaitableManager::add_waitable_callback(void *arg, Handle *handles, size_t num_handles, u64 timeout) {
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MultiThreadedWaitableManager *this_ptr = (MultiThreadedWaitableManager *)arg;
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svcClearEvent(handles[0]);
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std::scoped_lock lk{this_ptr->lock};
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this_ptr->waitables.insert(this_ptr->waitables.end(), this_ptr->to_add_waitables.begin(), this_ptr->to_add_waitables.end());
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this_ptr->to_add_waitables.clear();
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return 0;
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}
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void MultiThreadedWaitableManager::thread_func(void *t) {
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MultiThreadedWaitableManager *this_ptr = (MultiThreadedWaitableManager *)t;
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while (1) {
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IWaitable *w = this_ptr->get_waitable();
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if (w) {
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Result rc = w->handle_signaled(0);
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if (rc == 0xF601) {
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/* Close! */
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delete w;
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} else {
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this_ptr->add_waitable(w);
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}
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}
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}
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}
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