1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "rsFifoSocket.h"
18 #include "utils/Timers.h"
19 #include "utils/StopWatch.h"
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <ctype.h>
24 #include <unistd.h>
25 #include <poll.h>
26 #include <sys/types.h>
27 #include <sys/socket.h>
28
29 using namespace android;
30 using namespace android::renderscript;
31
FifoSocket()32 FifoSocket::FifoSocket() {
33 mShutdown = false;
34 }
35
~FifoSocket()36 FifoSocket::~FifoSocket() {
37
38 }
39
init(bool supportNonBlocking,bool supportReturnValues,size_t maxDataSize)40 bool FifoSocket::init(bool supportNonBlocking, bool supportReturnValues, size_t maxDataSize) {
41 int ret = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
42 return false;
43 }
44
shutdown()45 void FifoSocket::shutdown() {
46 mShutdown = true;
47 uint64_t d = 0;
48 ::send(sv[0], &d, sizeof(d), 0);
49 ::send(sv[1], &d, sizeof(d), 0);
50 close(sv[0]);
51 close(sv[1]);
52 }
53
writeAsync(const void * data,size_t bytes,bool waitForSpace)54 bool FifoSocket::writeAsync(const void *data, size_t bytes, bool waitForSpace) {
55 if (bytes == 0) {
56 return true;
57 }
58 //ALOGE("writeAsync %p %i", data, bytes);
59 size_t ret = ::send(sv[0], data, bytes, 0);
60 rsAssert(ret == bytes);
61 if (ret != bytes) {
62 ALOGE("writeAsync %p %zu ret %zu", data, bytes, ret);
63 }
64 return true;
65 }
66
writeWaitReturn(void * retData,size_t retBytes)67 void FifoSocket::writeWaitReturn(void *retData, size_t retBytes) {
68 if (mShutdown) {
69 return;
70 }
71
72 //ALOGE("writeWaitReturn %p %i", retData, retBytes);
73 size_t ret = ::recv(sv[0], retData, retBytes, MSG_WAITALL);
74 //ALOGE("writeWaitReturn %i", ret);
75 rsAssert(ret == retBytes);
76 }
77
read(void * data,size_t bytes)78 size_t FifoSocket::read(void *data, size_t bytes) {
79 if (mShutdown) {
80 return 0;
81 }
82
83 //ALOGE("read %p %i", data, bytes);
84 size_t ret = ::recv(sv[1], data, bytes, MSG_WAITALL);
85 rsAssert(ret == bytes || mShutdown);
86 //ALOGE("read ret %i bytes %i", ret, bytes);
87 if (mShutdown) {
88 ret = 0;
89 }
90 return ret;
91 }
92
isEmpty()93 bool FifoSocket::isEmpty() {
94 struct pollfd p;
95 p.fd = sv[1];
96 p.events = POLLIN;
97 int r = poll(&p, 1, 0);
98 //ALOGE("poll r=%i", r);
99 return r == 0;
100 }
101
102
readReturn(const void * data,size_t bytes)103 void FifoSocket::readReturn(const void *data, size_t bytes) {
104 //ALOGE("readReturn %p %Zu", data, bytes);
105 size_t ret = ::send(sv[1], data, bytes, 0);
106 //ALOGE("readReturn %Zu", ret);
107 //rsAssert(ret == bytes);
108 }
109
110
111