589ce85ee4
in this commit: - implemented the C stub - implemented the binder interfaces involved - implemented most of the C++ client side missing: - SensorManager cannot connect to the SensorServer yet (because there is no SensorServer yet) Change-Id: I75010cbeef31c98d6fa62fd5d388dcef87c2636b
94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdint.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <utils/Errors.h>
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#include <binder/Parcel.h>
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#include <gui/SensorChannel.h>
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namespace android {
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// ----------------------------------------------------------------------------
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SensorChannel::SensorChannel()
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: mSendFd(-1), mReceiveFd(-1)
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{
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int fds[2];
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if (pipe(fds) == 0) {
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mReceiveFd = fds[0];
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mSendFd = fds[1];
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fcntl(mReceiveFd, F_SETFL, O_NONBLOCK);
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fcntl(mSendFd, F_SETFL, O_NONBLOCK);
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}
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}
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SensorChannel::SensorChannel(const Parcel& data)
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: mSendFd(-1), mReceiveFd(-1)
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{
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mReceiveFd = dup(data.readFileDescriptor());
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fcntl(mReceiveFd, F_SETFL, O_NONBLOCK);
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}
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SensorChannel::~SensorChannel()
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{
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if (mSendFd >= 0)
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close(mSendFd);
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if (mReceiveFd >= 0)
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close(mReceiveFd);
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}
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int SensorChannel::getFd() const
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{
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return mReceiveFd;
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}
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ssize_t SensorChannel::write(void const* vaddr, size_t size)
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{
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ssize_t len = ::write(mSendFd, vaddr, size);
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if (len < 0)
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return -errno;
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return len;
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}
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ssize_t SensorChannel::read(void* vaddr, size_t size)
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{
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ssize_t len = ::read(mReceiveFd, vaddr, size);
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if (len < 0)
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return -errno;
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return len;
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}
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status_t SensorChannel::writeToParcel(Parcel* reply) const
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{
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if (mReceiveFd < 0)
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return -EINVAL;
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status_t result = reply->writeDupFileDescriptor(mReceiveFd);
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close(mReceiveFd);
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mReceiveFd = -1;
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return result;
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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