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Atmosphere/troposphere/haze/source/event_reactor.cpp

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troposphere: add haze MTP server (#2095) * troposphere: add haze MTP server * haze: adjust banner, new lines between class sections, single-statement if * haze: remove additional newlines between sections * haze: avoid use of reference out parameter * haze: console_main_loop: style * haze: event_reactor, file_system_proxy, ptp: style * haze: ptp_data_builder, ptp_object_database, ptp_object_heap, results, usb_session: style * haze: event_reactor, ptp_data_parser, async_usb_server, ptp_object_database, ptp_object_heap: style * haze: ptp_responder: style * haze: usb_session: style * haze: use svc defs from vapours * haze: misc comments * haze: fix pointer overflow check * haze: fix copy paste error * haze: use alignment, invalidate cached use values in console * haze: fix stray hex constant * haze: misc style * haze: fixes for windows * haze: add GetObjectPropsSupported, GetObjectPropDesc, GetObjectPropValue * haze: add SetObjectPropValue * haze: improve object database API * haze: improve WriteVariableLengthData readability * haze: fix directory renames on windows * haze: ptp_object_database: fix collation * haze: event_reactor: fix size validation * haze: ptp_responder: improve documentation * haze: ptp_responder: avoid unnecessary fs interaction in GetObjectPropValue * haze: ptp_responder: fix object deletion on windows * haze: tear down sessions on suspension * haze: prefer more specific data types * haze: misc * haze: fix usb 3.0 support * haze: improve host-to-device file transfer performance * haze: report device serial * haze: move static_assert to requires, fix alignment
2023-04-17 22:08:05 +01:00
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <haze.hpp>
namespace haze {
bool EventReactor::AddConsumer(EventConsumer *consumer, Waiter waiter) {
HAZE_ASSERT(m_num_wait_objects + 1 <= svc::ArgumentHandleCountMax);
/* Add to the end of the list. */
m_consumers[m_num_wait_objects] = consumer;
m_waiters[m_num_wait_objects] = waiter;
m_num_wait_objects++;
return true;
}
void EventReactor::RemoveConsumer(EventConsumer *consumer) {
s32 output_index = 0;
/* Remove the consumer. */
for (s32 input_index = 0; input_index < m_num_wait_objects; input_index++) {
if (m_consumers[input_index] == consumer) {
continue;
}
if (output_index != input_index) {
m_consumers[output_index] = m_consumers[input_index];
m_waiters[output_index] = m_waiters[input_index];
}
output_index++;
}
m_num_wait_objects = output_index;
}
Result EventReactor::WaitForImpl(s32 *out_arg_waiter, const Waiter *arg_waiters, s32 num_arg_waiters) {
HAZE_ASSERT(0 < num_arg_waiters && num_arg_waiters <= svc::ArgumentHandleCountMax);
HAZE_ASSERT(m_num_wait_objects + num_arg_waiters <= svc::ArgumentHandleCountMax);
while (true) {
/* Check if we should wait for an event. */
R_TRY(m_result);
/* Insert waiters from argument list. */
for (s32 i = 0; i < num_arg_waiters; i++) {
m_waiters[i + m_num_wait_objects] = arg_waiters[i];
}
s32 idx;
HAZE_R_ABORT_UNLESS(waitObjects(std::addressof(idx), m_waiters, m_num_wait_objects + num_arg_waiters, svc::WaitInfinite));
/* If a waiter in the argument list was signaled, return it. */
if (idx >= m_num_wait_objects) {
*out_arg_waiter = idx - m_num_wait_objects;
R_SUCCEED();
}
/* Otherwise, process the event as normal. */
m_consumers[idx]->ProcessEvent();
}
}
}