1 /* 2 * Copyright 2010, 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 #ifndef BCC_SOURCEINFO_H 18 #define BCC_SOURCEINFO_H 19 20 #include "Config.h" 21 22 #include <llvm/Module.h> 23 24 #include <stddef.h> 25 26 namespace llvm { 27 class LLVMContext; 28 } 29 30 namespace bcc { 31 namespace SourceKind { 32 enum SourceType { 33 File, 34 Buffer, 35 Module, 36 }; 37 } 38 39 class SourceInfo { 40 private: 41 SourceKind::SourceType type; 42 43 // Note: module should not be a part of union. Since, we are going to 44 // use module to store the pointer to parsed bitcode. 45 llvm::Module *module; 46 // If true, the LLVM context behind the module is shared with others. 47 // Therefore, don't try to destroy the context it when destroy the module. 48 bool shared_context; 49 50 union { 51 struct { 52 char const *resName; 53 char const *bitcode; 54 size_t bitcodeSize; 55 } buffer; 56 57 struct { 58 char const *path; 59 } file; 60 }; 61 62 unsigned long flags; 63 64 unsigned char sha1[20]; 65 66 private: 67 SourceInfo() : module(NULL), shared_context(false) { } 68 69 public: 70 static SourceInfo *createFromBuffer(char const *resName, 71 char const *bitcode, 72 size_t bitcodeSize, 73 unsigned long flags); 74 75 static SourceInfo *createFromFile(char const *path, 76 unsigned long flags); 77 78 static SourceInfo *createFromModule(llvm::Module *module, 79 unsigned long flags); 80 81 inline llvm::Module *getModule() const { 82 return module; 83 } 84 85 inline llvm::LLVMContext *getContext() const { 86 return (module) ? &module->getContext() : NULL; 87 } 88 89 // Share with the given context if it's provided. 90 int prepareModule(llvm::LLVMContext *context = NULL); 91 92 template <typename T> void introDependency(T &checker); 93 94 ~SourceInfo(); 95 }; 96 97 98 } // namespace bcc 99 100 #endif // BCC_SOURCEINFO_H 101
