Atmosphere/libraries/libstratosphere/source/htcs/impl/htcs_manager_holder.cpp

80 lines
2.4 KiB
C++

/*
* 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 <stratosphere.hpp>
#include "htcs_manager.hpp"
namespace ams::htcs::impl::HtcsManagerHolder {
namespace {
constinit os::SdkMutex g_holder_mutex;
constinit int g_holder_reference_count = 0;
mem::StandardAllocator g_allocator;
constinit HtcsManager *g_manager = nullptr;
alignas(os::MemoryPageSize) u8 g_heap_buffer[416_KB];
}
void AddReference() {
std::scoped_lock lk(g_holder_mutex);
if ((g_holder_reference_count++) == 0) {
/* Add reference to the htclow manager. */
htclow::HtclowManagerHolder::AddReference();
/* Initialize the allocator for the manager. */
g_allocator.Initialize(g_heap_buffer, sizeof(g_heap_buffer));
/* Allocate the manager. */
g_manager = static_cast<HtcsManager *>(g_allocator.Allocate(sizeof(HtcsManager), alignof(HtcsManager)));
/* Construct the manager. */
std::construct_at(g_manager, std::addressof(g_allocator), htclow::HtclowManagerHolder::GetHtclowManager());
}
AMS_ASSERT(g_holder_reference_count > 0);
}
void Release() {
std::scoped_lock lk(g_holder_mutex);
AMS_ASSERT(g_holder_reference_count > 0);
if ((--g_holder_reference_count) == 0) {
/* Destroy the manager. */
std::destroy_at(g_manager);
g_allocator.Free(g_manager);
g_manager = nullptr;
/* Finalize the allocator. */
g_allocator.Finalize();
/* Release reference to the htclow manager. */
htclow::HtclowManagerHolder::Release();
}
}
HtcsManager *GetHtcsManager() {
std::scoped_lock lk(g_holder_mutex);
return g_manager;
}
}