1 //==- BlockCounter.h - ADT for counting block visits ---------------*- C++ -*-// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines BlockCounter, an abstract data type used to count 11 // the number of times a given block has been visited along a path 12 // analyzed by CoreEngine. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_CLANG_GR_BLOCKCOUNTER 17 #define LLVM_CLANG_GR_BLOCKCOUNTER 18 19 namespace llvm { 20 class BumpPtrAllocator; 21 } 22 23 namespace clang { 24 25 class StackFrameContext; 26 27 namespace ento { 28 29 /// \class BlockCounter 30 /// \brief An abstract data type used to count the number of times a given 31 /// block has been visited along a path analyzed by CoreEngine. 32 class BlockCounter { 33 void *Data; 34 35 BlockCounter(void *D) : Data(D) {} 36 37 public: 38 BlockCounter() : Data(0) {} 39 40 unsigned getNumVisited(const StackFrameContext *CallSite, 41 unsigned BlockID) const; 42 43 class Factory { 44 void *F; 45 public: 46 Factory(llvm::BumpPtrAllocator& Alloc); 47 ~Factory(); 48 49 BlockCounter GetEmptyCounter(); 50 BlockCounter IncrementCount(BlockCounter BC, 51 const StackFrameContext *CallSite, 52 unsigned BlockID); 53 }; 54 55 friend class Factory; 56 }; 57 58 } // end GR namespace 59 60 } // end clang namespace 61 62 #endif 63
