mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-22 18:32:05 +00:00
235 lines
7.9 KiB
C++
235 lines
7.9 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 <stratosphere.hpp>
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#include "htclow_channel.hpp"
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namespace ams::htclow {
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Result Channel::Open(const Module *module, ChannelId id) {
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/* Check we're not already initialized. */
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AMS_ASSERT(!module->GetBase()->_is_initialized);
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/* Set our channel type. */
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m_channel = {
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._is_initialized = true,
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._module_id = module->GetBase()->_id,
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._channel_id = id,
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};
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/* Open the channel. */
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return m_manager->Open(impl::ConvertChannelType(m_channel));
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}
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void Channel::Close() {
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m_manager->Close(impl::ConvertChannelType(m_channel));
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}
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ChannelState Channel::GetChannelState() {
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return m_manager->GetChannelState(impl::ConvertChannelType(m_channel));
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}
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os::EventType *Channel::GetChannelStateEvent() {
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return m_manager->GetChannelStateEvent(impl::ConvertChannelType(m_channel));
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}
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Result Channel::Connect() {
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const auto channel = impl::ConvertChannelType(m_channel);
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/* Begin the flush. */
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u32 task_id;
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R_TRY(m_manager->ConnectBegin(std::addressof(task_id), channel));
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/* Wait for the task to finish. */
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this->WaitEvent(m_manager->GetTaskEvent(task_id), false);
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/* End the flush. */
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return m_manager->ConnectEnd(channel, task_id);
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}
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Result Channel::Flush() {
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/* Begin the flush. */
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u32 task_id;
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R_TRY(m_manager->FlushBegin(std::addressof(task_id), impl::ConvertChannelType(m_channel)));
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/* Wait for the task to finish. */
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this->WaitEvent(m_manager->GetTaskEvent(task_id), true);
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/* End the flush. */
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return m_manager->FlushEnd(task_id);
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}
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void Channel::Shutdown() {
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m_manager->Shutdown(impl::ConvertChannelType(m_channel));
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}
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Result Channel::Receive(s64 *out, void *dst, s64 size, ReceiveOption option) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(util::IsIntValueRepresentable<size_t>(size));
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/* Determine the minimum allowable receive size. */
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s64 min_size;
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switch (option) {
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case htclow::ReceiveOption_NonBlocking: min_size = 0; break;
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case htclow::ReceiveOption_ReceiveAnyData: min_size = 1; break;
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case htclow::ReceiveOption_ReceiveAllData: min_size = size; break;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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/* Repeatedly receive. */
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s64 received = 0;
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do {
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s64 cur_received;
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const Result result = this->ReceiveInternal(std::addressof(cur_received), static_cast<u8 *>(dst) + received, size - received, option);
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if (R_FAILED(result)) {
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if (htclow::ResultChannelReceiveBufferEmpty::Includes(result)) {
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R_UNLESS(option != htclow::ReceiveOption_NonBlocking, htclow::ResultNonBlockingReceiveFailed());
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}
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if (htclow::ResultChannelNotExist::Includes(result)) {
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*out = received;
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}
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return result;
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}
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received += static_cast<size_t>(cur_received);
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} while (received < min_size);
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/* Set output size. */
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AMS_ASSERT(received <= size);
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*out = received;
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return ResultSuccess();
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}
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Result Channel::Send(s64 *out, const void *src, s64 size) {
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/* Check pre-conditions. */
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AMS_ASSERT(util::IsIntValueRepresentable<size_t>(size));
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/* Convert channel. */
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const auto channel = impl::ConvertChannelType(m_channel);
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/* Loop sending. */
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s64 total_sent;
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size_t cur_sent;
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for (total_sent = 0; total_sent < size; total_sent += cur_sent) {
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AMS_ASSERT(util::IsIntValueRepresentable<size_t>(size - total_sent));
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/* Begin the send. */
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u32 task_id;
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const auto begin_result = m_manager->SendBegin(std::addressof(task_id), std::addressof(cur_sent), static_cast<const u8 *>(src) + total_sent, size - total_sent, channel);
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if (R_FAILED(begin_result)) {
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if (total_sent != 0) {
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break;
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} else {
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return begin_result;
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}
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}
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/* Wait for the task to finish. */
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this->WaitEvent(m_manager->GetTaskEvent(task_id), true);
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/* Finish the send. */
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R_ABORT_UNLESS(m_manager->SendEnd(task_id));
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}
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/* Set output size. */
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AMS_ASSERT(total_sent <= size);
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*out = total_sent;
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return ResultSuccess();
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}
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void Channel::SetConfig(const ChannelConfig &config) {
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m_manager->SetConfig(impl::ConvertChannelType(m_channel), config);
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}
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void Channel::SetReceiveBuffer(void *buf, size_t size) {
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m_manager->SetReceiveBuffer(impl::ConvertChannelType(m_channel), buf, size);
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}
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void Channel::SetSendBuffer(void *buf, size_t size) {
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m_manager->SetSendBuffer(impl::ConvertChannelType(m_channel), buf, size);
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}
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void Channel::SetSendBufferWithData(const void *buf, size_t size) {
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m_manager->SetSendBufferWithData(impl::ConvertChannelType(m_channel), buf, size);
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}
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Result Channel::WaitReceive(s64 size) {
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/* Check pre-conditions. */
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AMS_ASSERT(util::IsIntValueRepresentable<size_t>(size));
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return this->WaitReceiveInternal(size, nullptr);
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}
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Result Channel::WaitReceive(s64 size, os::EventType *event) {
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/* Check pre-conditions. */
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AMS_ASSERT(util::IsIntValueRepresentable<size_t>(size));
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AMS_ASSERT(event != nullptr);
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return this->WaitReceiveInternal(size, event);
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}
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void Channel::WaitEvent(os::EventType *event, bool) {
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return os::WaitEvent(event);
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}
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Result Channel::ReceiveInternal(s64 *out, void *dst, s64 size, ReceiveOption option) {
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const auto channel = impl::ConvertChannelType(m_channel);
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const bool blocking = option != ReceiveOption_NonBlocking;
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/* Begin the receive. */
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u32 task_id;
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R_TRY(m_manager->ReceiveBegin(std::addressof(task_id), channel, blocking ? 1 : 0));
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/* Wait for the task to finish. */
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this->WaitEvent(m_manager->GetTaskEvent(task_id), false);
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/* Receive the data. */
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size_t received;
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AMS_ASSERT(util::IsIntValueRepresentable<size_t>(size));
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R_TRY(m_manager->ReceiveEnd(std::addressof(received), dst, static_cast<size_t>(size), channel, task_id));
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/* Set the output size. */
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AMS_ASSERT(util::IsIntValueRepresentable<s64>(received));
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*out = static_cast<s64>(received);
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return ResultSuccess();
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}
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Result Channel::WaitReceiveInternal(s64 size, os::EventType *event) {
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const auto channel = impl::ConvertChannelType(m_channel);
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/* Begin the wait. */
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u32 task_id;
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R_TRY(m_manager->WaitReceiveBegin(std::addressof(task_id), channel, size));
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/* Perform the wait. */
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if (event != nullptr) {
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if (os::WaitAny(event, m_manager->GetTaskEvent(task_id)) == 0) {
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m_manager->WaitReceiveEnd(task_id);
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return htclow::ResultChannelWaitCancelled();
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}
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} else {
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this->WaitEvent(m_manager->GetTaskEvent(task_id), false);
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}
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/* End the wait. */
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return m_manager->WaitReceiveEnd(task_id);
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}
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}
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