1 //===- HandleToArea.cpp ----------------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #include <mcld/Support/HandleToArea.h> 10 #include <mcld/Support/MemoryArea.h> 11 #include <llvm/ADT/StringRef.h> 12 13 using namespace mcld; 14 15 //===----------------------------------------------------------------------===// 16 // HandleToArea 17 //===----------------------------------------------------------------------===// 18 bool HandleToArea::push_back(FileHandle* pHandle, MemoryArea* pArea) 19 { 20 if (NULL == pHandle || NULL == pArea) 21 return false; 22 23 Bucket bucket; 24 bucket.hash_value = HashFunction()( 25 llvm::StringRef(pHandle->path().native().c_str(), 26 pHandle->path().native().size())); 27 28 bucket.handle = pHandle; 29 bucket.area = pArea; 30 m_AreaMap.push_back(bucket); 31 return true; 32 } 33 34 bool HandleToArea::erase(MemoryArea* pArea) 35 { 36 if (NULL == pArea || NULL == pArea->handler()) 37 return false; 38 39 return erase(pArea->handler()->path()); 40 } 41 42 bool HandleToArea::erase(const sys::fs::Path& pPath) 43 { 44 unsigned int hash_value = HashFunction()( 45 llvm::StringRef(pPath.native().c_str(), 46 pPath.native().size())); 47 48 HandleToAreaMap::iterator bucket, bEnd = m_AreaMap.end(); 49 for (bucket = m_AreaMap.begin(); bucket != bEnd; ++bucket) { 50 if (bucket->hash_value == hash_value && bucket->handle->path() == pPath) { 51 // found 52 m_AreaMap.erase(bucket); 53 return true; 54 } 55 } 56 57 return false; 58 } 59 60 HandleToArea::Result HandleToArea::findFirst(const sys::fs::Path& pPath) 61 { 62 unsigned int hash_value = HashFunction()(llvm::StringRef(pPath.native().c_str(), 63 pPath.native().size())); 64 65 HandleToAreaMap::iterator bucket, bEnd = m_AreaMap.end(); 66 67 for (bucket = m_AreaMap.begin(); bucket != bEnd; ++bucket) { 68 if (bucket->hash_value == hash_value) { 69 if (bucket->handle->path() == pPath) { 70 return Result(bucket->handle, bucket->area); 71 } 72 } 73 } 74 75 return Result(NULL, NULL); 76 } 77 78 HandleToArea::ConstResult HandleToArea::findFirst(const sys::fs::Path& pPath) const 79 { 80 unsigned int hash_value = HashFunction()(llvm::StringRef(pPath.native().c_str(), 81 pPath.native().size())); 82 83 HandleToAreaMap::const_iterator bucket, bEnd = m_AreaMap.end(); 84 85 for (bucket = m_AreaMap.begin(); bucket != bEnd; ++bucket) { 86 if (bucket->hash_value == hash_value) { 87 if (bucket->handle->path() == pPath) { 88 return ConstResult(bucket->handle, bucket->area); 89 } 90 } 91 } 92 93 return ConstResult(NULL, NULL); 94 } 95 96
