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
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <ctype.h>
22 #include <unistd.h>
23 #include <poll.h>
24 #include <sys/types.h>
25 #include <sys/socket.h>
26
27 #ifndef RS_SERVER
28 #include "utils/Timers.h"
29 #include "utils/StopWatch.h"
30 #endif
31
32 using namespace android;
33 using namespace android::renderscript;
34
FifoSocket()35 FifoSocket::FifoSocket() {
36 mShutdown = false;
37 }
38
~FifoSocket()39 FifoSocket::~FifoSocket() {
40
41 }
42
init(bool supportNonBlocking,bool supportReturnValues,size_t maxDataSize)43 bool FifoSocket::init(bool supportNonBlocking, bool supportReturnValues, size_t maxDataSize) {
44 int ret = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
45 return false;
46 }
47
shutdown()48 void FifoSocket::shutdown() {
49 mShutdown = true;
50 uint64_t d = 0;
51 ::send(sv[0], &d, sizeof(d), 0);
52 ::send(sv[1], &d, sizeof(d), 0);
53 close(sv[0]);
54 close(sv[1]);
55 }
56
writeAsync(const void * data,size_t bytes,bool waitForSpace)57 bool FifoSocket::writeAsync(const void *data, size_t bytes, bool waitForSpace) {
58 if (bytes == 0) {
59 return true;
60 }
61 //ALOGE("writeAsync %p %i", data, bytes);
62 size_t ret = ::send(sv[0], data, bytes, 0);
63 rsAssert(ret == bytes);
64 if (ret != bytes) {
65 ALOGE("writeAsync %p %zu ret %zu", data, bytes, ret);
66 }
67 return true;
68 }
69
writeWaitReturn(void * retData,size_t retBytes)70 void FifoSocket::writeWaitReturn(void *retData, size_t retBytes) {
71 if (mShutdown) {
72 return;
73 }
74
75 //ALOGE("writeWaitReturn %p %i", retData, retBytes);
76 size_t ret = ::recv(sv[0], retData, retBytes, MSG_WAITALL);
77 //ALOGE("writeWaitReturn %i", ret);
78 rsAssert(ret == retBytes);
79 }
80
read(void * data,size_t bytes)81 size_t FifoSocket::read(void *data, size_t bytes) {
82 if (mShutdown) {
83 return 0;
84 }
85
86 //ALOGE("read %p %i", data, bytes);
87 size_t ret = ::recv(sv[1], data, bytes, MSG_WAITALL);
88 rsAssert(ret == bytes || mShutdown);
89 //ALOGE("read ret %i bytes %i", ret, bytes);
90 if (mShutdown) {
91 ret = 0;
92 }
93 return ret;
94 }
95
isEmpty()96 bool FifoSocket::isEmpty() {
97 struct pollfd p;
98 p.fd = sv[1];
99 p.events = POLLIN;
100 int r = poll(&p, 1, 0);
101 //ALOGE("poll r=%i", r);
102 return r == 0;
103 }
104
105
readReturn(const void * data,size_t bytes)106 void FifoSocket::readReturn(const void *data, size_t bytes) {
107 //ALOGE("readReturn %p %Zu", data, bytes);
108 size_t ret = ::send(sv[1], data, bytes, 0);
109 //ALOGE("readReturn %Zu", ret);
110 //rsAssert(ret == bytes);
111 }
112
113
114