mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
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106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
/*
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* Copyright (c) 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 "os_multiple_wait_holder_base.hpp"
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#include "os_multiple_wait_impl.hpp"
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#include "os_timeout_helper.hpp"
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#include "os_inter_process_event_impl.os.macos.hpp"
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#include <poll.h>
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namespace ams::os::impl {
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MultiWaitMacosImpl::MultiWaitMacosImpl() {
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R_ABORT_UNLESS(InterProcessEventMacosImpl::Create(std::addressof(m_cancel_write_handle), std::addressof(m_cancel_read_handle)));
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}
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MultiWaitMacosImpl::~MultiWaitMacosImpl() {
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InterProcessEventMacosImpl::Close(m_cancel_write_handle);
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InterProcessEventMacosImpl::Close(m_cancel_read_handle);
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m_cancel_write_handle = InvalidNativeHandle;
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m_cancel_read_handle = InvalidNativeHandle;
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}
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void MultiWaitMacosImpl::CancelWait() {
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InterProcessEventMacosImpl::Signal(m_cancel_write_handle);
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}
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Result MultiWaitMacosImpl::PollNativeHandlesImpl(s32 *out_index, s32 num, NativeHandle arr[], s32 array_size, s64 ns) {
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/* Check that we can add our cancel handle to the wait. */
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AMS_ABORT_UNLESS(array_size <= static_cast<s32>(MaximumHandleCount));
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AMS_UNUSED(array_size);
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/* Create poll fds. */
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struct pollfd pfds[MaximumHandleCount + 1];
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for (auto i = 0; i < num; ++i) {
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pfds[i].fd = arr[i];
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pfds[i].events = POLLIN;
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pfds[i].revents = 0;
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}
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pfds[num].fd = m_cancel_read_handle;
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pfds[num].events = POLLIN;
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pfds[num].revents = 0;
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/* Determine timeout. */
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constexpr s64 NanoSecondsPerMilliSecond = TimeSpan::FromMilliSeconds(1).GetNanoSeconds();
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/* TODO: Will macos ever support ppoll? */
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const int timeout = static_cast<int>(ns >= 0 ? (ns / NanoSecondsPerMilliSecond) : -1);
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/* Wait. */
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while (true) {
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const auto ret = ::poll(pfds, num + 1, timeout);
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if (ret < 0) {
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/* Treat EINTR like a cancellation event; this will lead to a re-poll if nothing is signaled. */
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AMS_ABORT_UNLESS(errno == EINTR);
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*out_index = MultiWaitImpl::WaitCancelled;
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R_SUCCEED();
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}
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/* Determine what event was polled. */
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if (ret == 0) {
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*out_index = MultiWaitImpl::WaitTimedOut;
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R_SUCCEED();
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} else if (pfds[num].revents != 0) {
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*out_index = MultiWaitImpl::WaitCancelled;
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/* Reset our cancel event. */
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InterProcessEventMacosImpl::Clear(m_cancel_read_handle);
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R_SUCCEED();
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} else {
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for (auto i = 0; i < num; ++i) {
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if (pfds[i].revents != 0) {
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*out_index = i;
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R_SUCCEED();
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}
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}
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AMS_ABORT("This should be impossible?");
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}
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}
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}
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Result MultiWaitMacosImpl::ReplyAndReceiveImpl(s32 *out_index, s32 num, NativeHandle arr[], s32 array_size, s64 ns, NativeHandle reply_target) {
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AMS_UNUSED(out_index, num, arr, array_size, ns, reply_target);
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R_ABORT_UNLESS(os::ResultNotImplemented());
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}
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}
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