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https://github.com/Atmosphere-NX/Atmosphere.git
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79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
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/*
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* Copyright (c) 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 <haze.hpp>
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namespace haze {
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bool EventReactor::AddConsumer(EventConsumer *consumer, Waiter waiter) {
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HAZE_ASSERT(m_num_wait_objects + 1 <= svc::ArgumentHandleCountMax);
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/* Add to the end of the list. */
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m_consumers[m_num_wait_objects] = consumer;
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m_waiters[m_num_wait_objects] = waiter;
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m_num_wait_objects++;
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return true;
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}
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void EventReactor::RemoveConsumer(EventConsumer *consumer) {
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s32 output_index = 0;
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/* Remove the consumer. */
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for (s32 input_index = 0; input_index < m_num_wait_objects; input_index++) {
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if (m_consumers[input_index] == consumer) {
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continue;
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}
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if (output_index != input_index) {
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m_consumers[output_index] = m_consumers[input_index];
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m_waiters[output_index] = m_waiters[input_index];
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}
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output_index++;
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}
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m_num_wait_objects = output_index;
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}
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Result EventReactor::WaitForImpl(s32 *out_arg_waiter, const Waiter *arg_waiters, s32 num_arg_waiters) {
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HAZE_ASSERT(0 < num_arg_waiters && num_arg_waiters <= svc::ArgumentHandleCountMax);
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HAZE_ASSERT(m_num_wait_objects + num_arg_waiters <= svc::ArgumentHandleCountMax);
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while (true) {
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/* Check if we should wait for an event. */
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R_TRY(m_result);
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/* Insert waiters from argument list. */
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for (s32 i = 0; i < num_arg_waiters; i++) {
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m_waiters[i + m_num_wait_objects] = arg_waiters[i];
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}
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s32 idx;
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HAZE_R_ABORT_UNLESS(waitObjects(std::addressof(idx), m_waiters, m_num_wait_objects + num_arg_waiters, svc::WaitInfinite));
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/* If a waiter in the argument list was signaled, return it. */
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if (idx >= m_num_wait_objects) {
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*out_arg_waiter = idx - m_num_wait_objects;
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R_SUCCEED();
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}
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/* Otherwise, process the event as normal. */
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m_consumers[idx]->ProcessEvent();
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}
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}
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}
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