[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | |
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| 19 | #include "binarchive.hh" |
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| 20 | #include <rpc/types.h> |
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| 21 | #include <rpc/xdr.h> |
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| 22 | |
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| 23 | |
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| 24 | using namespace hadoop; |
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| 25 | |
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| 26 | template <typename T> |
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| 27 | static void serialize(T t, OutStream& stream) |
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| 28 | { |
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| 29 | if (sizeof(T) != stream.write((const void *) &t, sizeof(T))) { |
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| 30 | throw new IOException("Error serializing data."); |
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| 31 | } |
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| 32 | } |
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| 33 | |
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| 34 | template <typename T> |
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| 35 | static void deserialize(T& t, InStream& stream) |
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| 36 | { |
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| 37 | if (sizeof(T) != stream.read((void *) &t, sizeof(T))) { |
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| 38 | throw new IOException("Error deserializing data."); |
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| 39 | } |
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| 40 | } |
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| 41 | |
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| 42 | static void serializeLong(int64_t t, OutStream& stream) |
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| 43 | { |
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| 44 | if (t >= -112 && t <= 127) { |
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| 45 | int8_t b = t; |
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| 46 | stream.write(&b, 1); |
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| 47 | return; |
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| 48 | } |
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| 49 | |
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| 50 | int8_t len = -112; |
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| 51 | if (t < 0) { |
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| 52 | t ^= 0xFFFFFFFFFFFFFFFFLL; // take one's complement |
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| 53 | len = -120; |
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| 54 | } |
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| 55 | |
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| 56 | uint64_t tmp = t; |
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| 57 | while (tmp != 0) { |
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| 58 | tmp = tmp >> 8; |
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| 59 | len--; |
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| 60 | } |
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| 61 | |
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| 62 | stream.write(&len, 1); |
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| 63 | |
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| 64 | len = (len < -120) ? -(len + 120) : -(len + 112); |
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| 65 | |
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| 66 | for (uint32_t idx = len; idx != 0; idx--) { |
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| 67 | uint32_t shiftbits = (idx - 1) * 8; |
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| 68 | uint64_t mask = 0xFFLL << shiftbits; |
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| 69 | uint8_t b = (t & mask) >> shiftbits; |
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| 70 | stream.write(&b, 1); |
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| 71 | } |
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| 72 | } |
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| 73 | |
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| 74 | static void deserializeLong(int64_t& t, InStream& stream) |
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| 75 | { |
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| 76 | int8_t b; |
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| 77 | if (1 != stream.read(&b, 1)) { |
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| 78 | throw new IOException("Error deserializing long."); |
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| 79 | } |
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| 80 | if (b >= -112) { |
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| 81 | t = b; |
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| 82 | return; |
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| 83 | } |
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| 84 | bool isNegative = (b < -120); |
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| 85 | b = isNegative ? -(b + 120) : -(b + 112); |
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| 86 | uint8_t barr[b]; |
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| 87 | if (b != stream.read(barr, b)) { |
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| 88 | throw new IOException("Error deserializing long."); |
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| 89 | } |
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| 90 | t = 0; |
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| 91 | for (int idx = 0; idx < b; idx++) { |
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| 92 | t = t << 8; |
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| 93 | t |= (barr[idx] & 0xFF); |
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| 94 | } |
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| 95 | if (isNegative) { |
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| 96 | t ^= 0xFFFFFFFFFFFFFFFFLL; |
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| 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | static void serializeInt(int32_t t, OutStream& stream) |
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| 101 | { |
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| 102 | int64_t longVal = t; |
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| 103 | ::serializeLong(longVal, stream); |
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| 104 | } |
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| 105 | |
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| 106 | static void deserializeInt(int32_t& t, InStream& stream) |
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| 107 | { |
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| 108 | int64_t longVal; |
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| 109 | ::deserializeLong(longVal, stream); |
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| 110 | t = longVal; |
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| 111 | } |
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| 112 | |
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| 113 | static void serializeFloat(float t, OutStream& stream) |
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| 114 | { |
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| 115 | char buf[sizeof(float)]; |
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| 116 | XDR xdrs; |
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| 117 | xdrmem_create(&xdrs, buf, sizeof(float), XDR_ENCODE); |
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| 118 | xdr_float(&xdrs, &t); |
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| 119 | stream.write(buf, sizeof(float)); |
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| 120 | } |
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| 121 | |
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| 122 | static void deserializeFloat(float& t, InStream& stream) |
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| 123 | { |
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| 124 | char buf[sizeof(float)]; |
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| 125 | if (sizeof(float) != stream.read(buf, sizeof(float))) { |
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| 126 | throw new IOException("Error deserializing float."); |
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| 127 | } |
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| 128 | XDR xdrs; |
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| 129 | xdrmem_create(&xdrs, buf, sizeof(float), XDR_DECODE); |
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| 130 | xdr_float(&xdrs, &t); |
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| 131 | } |
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| 132 | |
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| 133 | static void serializeDouble(double t, OutStream& stream) |
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| 134 | { |
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| 135 | char buf[sizeof(double)]; |
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| 136 | XDR xdrs; |
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| 137 | xdrmem_create(&xdrs, buf, sizeof(double), XDR_ENCODE); |
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| 138 | xdr_double(&xdrs, &t); |
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| 139 | stream.write(buf, sizeof(double)); |
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| 140 | } |
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| 141 | |
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| 142 | static void deserializeDouble(double& t, InStream& stream) |
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| 143 | { |
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| 144 | char buf[sizeof(double)]; |
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| 145 | stream.read(buf, sizeof(double)); |
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| 146 | XDR xdrs; |
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| 147 | xdrmem_create(&xdrs, buf, sizeof(double), XDR_DECODE); |
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| 148 | xdr_double(&xdrs, &t); |
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| 149 | } |
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| 150 | |
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| 151 | static void serializeString(const std::string& t, OutStream& stream) |
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| 152 | { |
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| 153 | ::serializeInt(t.length(), stream); |
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| 154 | if (t.length() > 0) { |
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| 155 | stream.write(t.data(), t.length()); |
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| 156 | } |
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| 157 | } |
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| 158 | |
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| 159 | static void deserializeString(std::string& t, InStream& stream) |
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| 160 | { |
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| 161 | int32_t len = 0; |
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| 162 | ::deserializeInt(len, stream); |
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| 163 | if (len > 0) { |
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| 164 | // resize the string to the right length |
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| 165 | t.resize(len); |
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| 166 | // read into the string in 64k chunks |
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| 167 | const int bufSize = 65536; |
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| 168 | int offset = 0; |
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| 169 | char buf[bufSize]; |
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| 170 | while (len > 0) { |
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| 171 | int chunkLength = len > bufSize ? bufSize : len; |
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| 172 | stream.read((void *)buf, chunkLength); |
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| 173 | t.replace(offset, chunkLength, buf, chunkLength); |
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| 174 | offset += chunkLength; |
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| 175 | len -= chunkLength; |
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| 176 | } |
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| 177 | } |
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| 178 | } |
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| 179 | |
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| 180 | void hadoop::IBinArchive::deserialize(int8_t& t, const char* tag) |
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| 181 | { |
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| 182 | ::deserialize(t, stream); |
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| 183 | } |
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| 184 | |
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| 185 | void hadoop::IBinArchive::deserialize(bool& t, const char* tag) |
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| 186 | { |
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| 187 | ::deserialize(t, stream); |
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| 188 | } |
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| 189 | |
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| 190 | void hadoop::IBinArchive::deserialize(int32_t& t, const char* tag) |
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| 191 | { |
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| 192 | int64_t longVal = 0LL; |
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| 193 | ::deserializeLong(longVal, stream); |
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| 194 | t = longVal; |
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| 195 | } |
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| 196 | |
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| 197 | void hadoop::IBinArchive::deserialize(int64_t& t, const char* tag) |
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| 198 | { |
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| 199 | ::deserializeLong(t, stream); |
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| 200 | } |
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| 201 | |
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| 202 | void hadoop::IBinArchive::deserialize(float& t, const char* tag) |
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| 203 | { |
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| 204 | ::deserializeFloat(t, stream); |
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| 205 | } |
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| 206 | |
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| 207 | void hadoop::IBinArchive::deserialize(double& t, const char* tag) |
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| 208 | { |
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| 209 | ::deserializeDouble(t, stream); |
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| 210 | } |
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| 211 | |
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| 212 | void hadoop::IBinArchive::deserialize(std::string& t, const char* tag) |
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| 213 | { |
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| 214 | ::deserializeString(t, stream); |
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| 215 | } |
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| 216 | |
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| 217 | void hadoop::IBinArchive::deserialize(std::string& t, size_t& len, const char* tag) |
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| 218 | { |
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| 219 | ::deserializeString(t, stream); |
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| 220 | len = t.length(); |
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| 221 | } |
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| 222 | |
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| 223 | void hadoop::IBinArchive::startRecord(Record& s, const char* tag) |
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| 224 | { |
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| 225 | } |
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| 226 | |
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| 227 | void hadoop::IBinArchive::endRecord(Record& s, const char* tag) |
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| 228 | { |
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| 229 | } |
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| 230 | |
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| 231 | Index* hadoop::IBinArchive::startVector(const char* tag) |
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| 232 | { |
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| 233 | int32_t len; |
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| 234 | ::deserializeInt(len, stream); |
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| 235 | BinIndex *idx = new BinIndex((size_t) len); |
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| 236 | return idx; |
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| 237 | } |
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| 238 | |
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| 239 | void hadoop::IBinArchive::endVector(Index* idx, const char* tag) |
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| 240 | { |
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| 241 | delete idx; |
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| 242 | } |
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| 243 | |
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| 244 | Index* hadoop::IBinArchive::startMap(const char* tag) |
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| 245 | { |
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| 246 | int32_t len; |
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| 247 | ::deserializeInt(len, stream); |
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| 248 | BinIndex *idx = new BinIndex((size_t) len); |
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| 249 | return idx; |
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| 250 | } |
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| 251 | |
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| 252 | void hadoop::IBinArchive::endMap(Index* idx, const char* tag) |
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| 253 | { |
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| 254 | delete idx; |
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| 255 | } |
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| 256 | |
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| 257 | hadoop::IBinArchive::~IBinArchive() |
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| 258 | { |
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| 259 | } |
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| 260 | |
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| 261 | void hadoop::OBinArchive::serialize(int8_t t, const char* tag) |
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| 262 | { |
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| 263 | ::serialize(t, stream); |
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| 264 | } |
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| 265 | |
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| 266 | void hadoop::OBinArchive::serialize(bool t, const char* tag) |
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| 267 | { |
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| 268 | ::serialize(t, stream); |
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| 269 | } |
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| 270 | |
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| 271 | void hadoop::OBinArchive::serialize(int32_t t, const char* tag) |
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| 272 | { |
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| 273 | int64_t longVal = t; |
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| 274 | ::serializeLong(longVal, stream); |
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| 275 | } |
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| 276 | |
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| 277 | void hadoop::OBinArchive::serialize(int64_t t, const char* tag) |
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| 278 | { |
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| 279 | ::serializeLong(t, stream); |
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| 280 | } |
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| 281 | |
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| 282 | void hadoop::OBinArchive::serialize(float t, const char* tag) |
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| 283 | { |
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| 284 | ::serializeFloat(t, stream); |
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| 285 | } |
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| 286 | |
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| 287 | void hadoop::OBinArchive::serialize(double t, const char* tag) |
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| 288 | { |
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| 289 | ::serializeDouble(t, stream); |
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| 290 | } |
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| 291 | |
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| 292 | void hadoop::OBinArchive::serialize(const std::string& t, const char* tag) |
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| 293 | { |
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| 294 | ::serializeString(t, stream); |
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| 295 | } |
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| 296 | |
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| 297 | void hadoop::OBinArchive::serialize(const std::string& t, size_t len, const char* tag) |
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| 298 | { |
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| 299 | ::serializeString(t, stream); |
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| 300 | } |
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| 301 | |
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| 302 | void hadoop::OBinArchive::startRecord(const Record& s, const char* tag) |
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| 303 | { |
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| 304 | } |
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| 305 | |
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| 306 | void hadoop::OBinArchive::endRecord(const Record& s, const char* tag) |
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| 307 | { |
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| 308 | } |
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| 309 | |
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| 310 | void hadoop::OBinArchive::startVector(size_t len, const char* tag) |
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| 311 | { |
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| 312 | ::serializeInt(len, stream); |
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| 313 | } |
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| 314 | |
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| 315 | void hadoop::OBinArchive::endVector(size_t len, const char* tag) |
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| 316 | { |
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| 317 | } |
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| 318 | |
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| 319 | void hadoop::OBinArchive::startMap(size_t len, const char* tag) |
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| 320 | { |
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| 321 | ::serializeInt(len, stream); |
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| 322 | } |
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| 323 | |
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| 324 | void hadoop::OBinArchive::endMap(size_t len, const char* tag) |
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| 325 | { |
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| 326 | } |
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| 327 | |
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| 328 | hadoop::OBinArchive::~OBinArchive() |
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| 329 | { |
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| 330 | } |
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