mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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* Copyright (c) 2018-2020 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 <stratosphere.hpp>
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namespace ams::i2c {
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namespace {
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constinit os::SdkMutex g_init_mutex;
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constinit int g_initialize_count = 0;
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constinit os::SdkMutex g_i2c_mutex;
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std::shared_ptr<sf::IManager> g_i2c_manager;
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constinit int g_i2c_count = 0;
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constinit os::SdkMutex g_i2c_pcv_mutex;
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std::shared_ptr<sf::IManager> g_i2c_pcv_manager;
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constinit int g_i2c_pcv_count = 0;
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}
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void InitializeWith(std::shared_ptr<i2c::sf::IManager> &&sp, std::shared_ptr<i2c::sf::IManager> &&sp_pcv) {
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std::scoped_lock lk(g_init_mutex);
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AMS_ABORT_UNLESS(g_initialize_count == 0);
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{
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std::scoped_lock lk(g_i2c_mutex);
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g_i2c_manager = std::move(sp);
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AMS_ABORT_UNLESS(g_i2c_count == 0);
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g_i2c_count = 1;
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}
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{
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std::scoped_lock lk(g_i2c_pcv_mutex);
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g_i2c_pcv_manager = std::move(sp);
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AMS_ABORT_UNLESS(g_i2c_pcv_count == 0);
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g_i2c_pcv_count = 1;
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}
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g_initialize_count = 1;
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}
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void InitializeEmpty() {
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std::scoped_lock lk(g_init_mutex);
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++g_initialize_count;
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}
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void Finalize() {
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std::scoped_lock lk(g_init_mutex);
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AMS_ASSERT(g_initialize_count > 0);
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if ((--g_initialize_count) == 0) {
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{
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std::scoped_lock lk(g_i2c_mutex);
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AMS_ASSERT(g_i2c_count > 0);
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if ((--g_i2c_count) == 0) {
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g_i2c_manager.reset();
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}
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}
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{
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std::scoped_lock lk(g_i2c_pcv_mutex);
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AMS_ASSERT(g_i2c_pcv_count > 0);
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if ((--g_i2c_pcv_count) == 0) {
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g_i2c_pcv_manager.reset();
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}
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}
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}
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}
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}
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