mirror of
https://github.com/Atmosphere-NX/Atmosphere
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111 lines
3.9 KiB
C++
111 lines
3.9 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 "impl/os_waitable_object_list.hpp"
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namespace ams::os {
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Result InterruptEvent::Initialize(u32 interrupt_id, bool autoclear) {
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AMS_ASSERT(!this->is_initialized);
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this->auto_clear = autoclear;
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const auto type = this->auto_clear ? svc::InterruptType_Edge : svc::InterruptType_Level;
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R_TRY(svcCreateInterruptEvent(this->handle.GetPointer(), interrupt_id, type));
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this->is_initialized = true;
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return ResultSuccess();
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}
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void InterruptEvent::Finalize() {
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AMS_ASSERT(this->is_initialized);
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R_ASSERT(svcCloseHandle(this->handle.Move()));
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this->auto_clear = true;
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this->is_initialized = false;
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}
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InterruptEvent::InterruptEvent(u32 interrupt_id, bool autoclear) {
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this->is_initialized = false;
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R_ASSERT(this->Initialize(interrupt_id, autoclear));
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}
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void InterruptEvent::Reset() {
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R_ASSERT(svcClearEvent(this->handle.Get()));
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}
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void InterruptEvent::Wait() {
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AMS_ASSERT(this->is_initialized);
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while (true) {
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/* Continuously wait, until success. */
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R_TRY_CATCH(svcWaitSynchronizationSingle(this->handle.Get(), U64_MAX)) {
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R_CATCH(svc::ResultCancelled) { continue; }
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} R_END_TRY_CATCH_WITH_ASSERT;
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/* Clear, if we must. */
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if (this->auto_clear) {
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R_TRY_CATCH(svcResetSignal(this->handle.Get())) {
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/* Some other thread might have caught this before we did. */
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R_CATCH(svc::ResultInvalidState) { continue; }
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} R_END_TRY_CATCH_WITH_ASSERT;
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}
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return;
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}
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}
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bool InterruptEvent::TryWait() {
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AMS_ASSERT(this->is_initialized);
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if (this->auto_clear) {
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/* Auto-clear. Just try to reset. */
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return R_SUCCEEDED(svcResetSignal(this->handle.Get()));
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} else {
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/* Not auto-clear. */
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while (true) {
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/* Continuously wait, until success or timeout. */
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R_TRY_CATCH(svcWaitSynchronizationSingle(this->handle.Get(), 0)) {
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R_CATCH(svc::ResultTimedOut) { return false; }
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R_CATCH(svc::ResultCancelled) { continue; }
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} R_END_TRY_CATCH_WITH_ASSERT;
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/* We succeeded, so we're signaled. */
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return true;
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}
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}
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}
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bool InterruptEvent::TimedWait(u64 ns) {
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AMS_ASSERT(this->is_initialized);
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TimeoutHelper timeout_helper(ns);
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while (true) {
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/* Continuously wait, until success or timeout. */
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R_TRY_CATCH(svcWaitSynchronizationSingle(this->handle.Get(), timeout_helper.NsUntilTimeout())) {
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R_CATCH(svc::ResultTimedOut) { return false; }
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R_CATCH(svc::ResultCancelled) { continue; }
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} R_END_TRY_CATCH_WITH_ASSERT;
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/* Clear, if we must. */
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if (this->auto_clear) {
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R_TRY_CATCH(svcResetSignal(this->handle.Get())) {
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/* Some other thread might have caught this before we did. */
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R_CATCH(svc::ResultInvalidState) { continue; }
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} R_END_TRY_CATCH_WITH_ASSERT;
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}
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return true;
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}
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}
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}
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