Jarkko Poyry | 3c82736 | 2014-09-02 11:48:52 +0300 | [diff] [blame] | 1 | /*------------------------------------------------------------------------- |
| 2 | * drawElements Quality Program Execution Server |
| 3 | * --------------------------------------------- |
| 4 | * |
| 5 | * Copyright 2014 The Android Open Source Project |
| 6 | * |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | * you may not use this file except in compliance with the License. |
| 9 | * You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, software |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | * See the License for the specific language governing permissions and |
| 17 | * limitations under the License. |
| 18 | * |
| 19 | *//*! |
| 20 | * \file |
| 21 | * \brief File Reader. |
| 22 | *//*--------------------------------------------------------------------*/ |
| 23 | |
| 24 | #include "xsPosixFileReader.hpp" |
| 25 | |
| 26 | #include <vector> |
| 27 | |
| 28 | namespace xs |
| 29 | { |
| 30 | namespace posix |
| 31 | { |
| 32 | |
| 33 | FileReader::FileReader (int blockSize, int numBlocks) |
| 34 | : m_file (DE_NULL) |
| 35 | , m_buf (blockSize, numBlocks) |
| 36 | , m_isRunning (false) |
| 37 | { |
| 38 | } |
| 39 | |
| 40 | FileReader::~FileReader (void) |
| 41 | { |
| 42 | } |
| 43 | |
| 44 | void FileReader::start (const char* filename) |
| 45 | { |
| 46 | DE_ASSERT(!m_isRunning); |
| 47 | |
| 48 | m_file = deFile_create(filename, DE_FILEMODE_OPEN|DE_FILEMODE_READ); |
| 49 | XS_CHECK(m_file); |
| 50 | |
| 51 | #if (DE_OS != DE_OS_IOS) |
| 52 | // Set to non-blocking mode. |
| 53 | if (!deFile_setFlags(m_file, DE_FILE_NONBLOCKING)) |
| 54 | { |
| 55 | deFile_destroy(m_file); |
| 56 | m_file = DE_NULL; |
| 57 | XS_FAIL("Failed to set non-blocking mode"); |
| 58 | } |
| 59 | #endif |
| 60 | |
| 61 | m_isRunning = true; |
| 62 | |
| 63 | de::Thread::start(); |
| 64 | } |
| 65 | |
| 66 | void FileReader::run (void) |
| 67 | { |
| 68 | std::vector<deUint8> tmpBuf (FILEREADER_TMP_BUFFER_SIZE); |
| 69 | deInt64 numRead = 0; |
| 70 | |
| 71 | while (!m_buf.isCanceled()) |
| 72 | { |
| 73 | deFileResult result = deFile_read(m_file, &tmpBuf[0], (deInt64)tmpBuf.size(), &numRead); |
| 74 | |
| 75 | if (result == DE_FILERESULT_SUCCESS) |
| 76 | { |
| 77 | // Write to buffer. |
| 78 | try |
| 79 | { |
| 80 | m_buf.write((int)numRead, &tmpBuf[0]); |
| 81 | m_buf.flush(); |
| 82 | } |
| 83 | catch (const ThreadedByteBuffer::CanceledException&) |
| 84 | { |
| 85 | // Canceled. |
| 86 | break; |
| 87 | } |
| 88 | } |
| 89 | else if (result == DE_FILERESULT_END_OF_FILE || |
| 90 | result == DE_FILERESULT_WOULD_BLOCK) |
| 91 | { |
| 92 | // Wait for more data. |
| 93 | deSleep(FILEREADER_IDLE_SLEEP); |
| 94 | } |
| 95 | else |
| 96 | break; // Error. |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | void FileReader::stop (void) |
| 101 | { |
| 102 | if (!m_isRunning) |
| 103 | return; // Nothing to do. |
| 104 | |
| 105 | m_buf.cancel(); |
| 106 | |
| 107 | // Join thread. |
| 108 | join(); |
| 109 | |
| 110 | // Destroy file. |
| 111 | deFile_destroy(m_file); |
| 112 | m_file = DE_NULL; |
| 113 | |
| 114 | // Reset buffer. |
| 115 | m_buf.clear(); |
| 116 | |
| 117 | m_isRunning = false; |
| 118 | } |
| 119 | |
| 120 | } // posix |
| 121 | } // xs |