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106 lines
2.6 KiB
106 lines
2.6 KiB
/* |
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* Copyright (C) 2011 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 "rsFifoSocket.h" |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <ctype.h> |
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#include <unistd.h> |
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#include <poll.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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namespace android { |
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namespace renderscript { |
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FifoSocket::FifoSocket() { |
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mShutdown = false; |
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} |
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FifoSocket::~FifoSocket() { |
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} |
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bool FifoSocket::init(bool supportNonBlocking, bool supportReturnValues, size_t maxDataSize) { |
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int ret = socketpair(AF_UNIX, SOCK_STREAM, 0, sv); |
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return (ret == 0); |
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} |
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void FifoSocket::shutdown() { |
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mShutdown = true; |
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uint64_t d = 0; |
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::send(sv[0], &d, sizeof(d), 0); |
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::send(sv[1], &d, sizeof(d), 0); |
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close(sv[0]); |
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close(sv[1]); |
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} |
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bool FifoSocket::writeAsync(const void *data, size_t bytes, bool waitForSpace) { |
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if (bytes == 0) { |
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return true; |
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} |
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//ALOGE("writeAsync %p %i", data, bytes); |
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size_t ret = ::send(sv[0], data, bytes, 0); |
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rsAssert(ret == bytes); |
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if (ret != bytes) { |
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ALOGE("writeAsync %p %zu ret %zu", data, bytes, ret); |
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} |
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return true; |
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} |
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void FifoSocket::writeWaitReturn(void *retData, size_t retBytes) { |
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if (mShutdown) { |
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return; |
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} |
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//ALOGE("writeWaitReturn %p %i", retData, retBytes); |
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size_t ret = ::recv(sv[0], retData, retBytes, MSG_WAITALL); |
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//ALOGE("writeWaitReturn %i", ret); |
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rsAssert(ret == retBytes); |
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} |
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size_t FifoSocket::read(void *data, size_t bytes) { |
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if (mShutdown) { |
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return 0; |
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} |
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//ALOGE("read %p %i", data, bytes); |
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size_t ret = ::recv(sv[1], data, bytes, MSG_WAITALL); |
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rsAssert(ret == bytes || mShutdown); |
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//ALOGE("read ret %i bytes %i", ret, bytes); |
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if (mShutdown) { |
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ret = 0; |
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} |
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return ret; |
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} |
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bool FifoSocket::isEmpty() { |
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struct pollfd p; |
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p.fd = sv[1]; |
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p.events = POLLIN; |
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int r = poll(&p, 1, 0); |
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//ALOGE("poll r=%i", r); |
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return r == 0; |
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} |
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void FifoSocket::readReturn(const void *data, size_t bytes) { |
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::send(sv[1], data, bytes, 0); |
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} |
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} // namespace renderscript |
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} // namespace android
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