Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 "MemoryType.h" |
| 18 | |
Andreas Huber | 02ef12f | 2017-04-06 11:09:07 -0700 | [diff] [blame] | 19 | #include "HidlTypeAssertion.h" |
| 20 | |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 21 | #include <hidl-util/Formatter.h> |
| 22 | #include <android-base/logging.h> |
| 23 | |
| 24 | namespace android { |
| 25 | |
| 26 | MemoryType::MemoryType() {} |
| 27 | |
| 28 | void MemoryType::addNamedTypesToSet(std::set<const FQName> &) const { |
| 29 | // do nothing |
| 30 | } |
| 31 | |
| 32 | std::string MemoryType::getCppType(StorageMode mode, |
| 33 | bool specifyNamespaces) const { |
| 34 | const std::string base = |
| 35 | std::string(specifyNamespaces ? "::android::hardware::" : "") |
| 36 | + "hidl_memory"; |
| 37 | |
| 38 | switch (mode) { |
| 39 | case StorageMode_Stack: |
| 40 | return base; |
| 41 | |
| 42 | case StorageMode_Argument: |
| 43 | return "const " + base + "&"; |
| 44 | |
| 45 | case StorageMode_Result: |
| 46 | return "const " + base + "*"; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | std::string MemoryType::getVtsType() const { |
Keun Soo Yim | b349e01 | 2017-01-06 16:51:32 -0800 | [diff] [blame] | 51 | return "TYPE_HIDL_MEMORY"; |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | void MemoryType::emitReaderWriter( |
| 55 | Formatter &out, |
| 56 | const std::string &name, |
| 57 | const std::string &parcelObj, |
| 58 | bool parcelObjIsPointer, |
| 59 | bool isReader, |
| 60 | ErrorMode mode) const { |
| 61 | const std::string parentName = "_hidl_" + name + "_parent"; |
| 62 | out << "size_t " << parentName << ";\n\n"; |
| 63 | |
| 64 | const std::string parcelObjDeref = |
| 65 | parcelObj + (parcelObjIsPointer ? "->" : "."); |
| 66 | |
| 67 | if (isReader) { |
Martijn Coenen | 6a082c6 | 2017-01-11 12:47:02 +0100 | [diff] [blame] | 68 | out << "_hidl_err = " |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 69 | << parcelObjDeref |
Martijn Coenen | 857ea5f | 2017-04-18 15:54:25 -0700 | [diff] [blame] | 70 | << "readBuffer(" |
| 71 | << "sizeof(*" |
| 72 | << name |
| 73 | << "), &" |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 74 | << parentName |
Martijn Coenen | 6a082c6 | 2017-01-11 12:47:02 +0100 | [diff] [blame] | 75 | << ", " |
| 76 | << " reinterpret_cast<const void **>(" |
| 77 | << "&" << name |
| 78 | << "));\n\n"; |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 79 | |
Martijn Coenen | 6a082c6 | 2017-01-11 12:47:02 +0100 | [diff] [blame] | 80 | handleError(out, mode); |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 81 | } else { |
| 82 | out << "_hidl_err = " |
| 83 | << parcelObjDeref |
| 84 | << "writeBuffer(&" |
| 85 | << name |
| 86 | << ", sizeof(" |
| 87 | << name |
| 88 | << "), &" |
| 89 | << parentName |
| 90 | << ");\n"; |
| 91 | |
| 92 | handleError(out, mode); |
| 93 | } |
| 94 | |
| 95 | emitReaderWriterEmbedded( |
| 96 | out, |
| 97 | 0 /* depth */, |
| 98 | name, |
| 99 | name /* sanitizedName */, |
| 100 | isReader /* nameIsPointer */, |
| 101 | parcelObj, |
| 102 | parcelObjIsPointer, |
| 103 | isReader, |
| 104 | mode, |
| 105 | parentName, |
| 106 | "0 /* parentOffset */"); |
| 107 | } |
| 108 | |
| 109 | void MemoryType::emitReaderWriterEmbedded( |
| 110 | Formatter &out, |
| 111 | size_t /* depth */, |
| 112 | const std::string &name, |
| 113 | const std::string & /*sanitizedName*/, |
| 114 | bool nameIsPointer, |
| 115 | const std::string &parcelObj, |
| 116 | bool parcelObjIsPointer, |
| 117 | bool isReader, |
| 118 | ErrorMode mode, |
| 119 | const std::string &parentName, |
| 120 | const std::string &offsetText) const { |
| 121 | emitReaderWriterEmbeddedForTypeName( |
| 122 | out, |
| 123 | name, |
| 124 | nameIsPointer, |
| 125 | parcelObj, |
| 126 | parcelObjIsPointer, |
| 127 | isReader, |
| 128 | mode, |
| 129 | parentName, |
| 130 | offsetText, |
| 131 | "::android::hardware::hidl_memory", |
| 132 | "" /* childName */, |
| 133 | "::android::hardware"); |
| 134 | } |
| 135 | |
| 136 | bool MemoryType::needsEmbeddedReadWrite() const { |
| 137 | return true; |
| 138 | } |
| 139 | |
| 140 | bool MemoryType::resultNeedsDeref() const { |
| 141 | return true; |
| 142 | } |
| 143 | |
| 144 | bool MemoryType::isJavaCompatible() const { |
| 145 | return false; |
| 146 | } |
| 147 | |
Andreas Huber | 02ef12f | 2017-04-06 11:09:07 -0700 | [diff] [blame] | 148 | static HidlTypeAssertion assertion("hidl_memory", 40 /* size */); |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 149 | void MemoryType::getAlignmentAndSize(size_t *align, size_t *size) const { |
Andreas Huber | 2639fa3 | 2017-03-30 09:10:56 -0700 | [diff] [blame] | 150 | *align = 8; // hidl_memory |
Andreas Huber | 02ef12f | 2017-04-06 11:09:07 -0700 | [diff] [blame] | 151 | *size = assertion.size(); |
Martijn Coenen | 99e6beb | 2016-12-01 15:48:42 +0100 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | status_t MemoryType::emitVtsTypeDeclarations(Formatter &out) const { |
| 155 | out << "type: " << getVtsType() << "\n"; |
| 156 | return OK; |
| 157 | } |
| 158 | |
| 159 | } // namespace android |
| 160 | |