clang  9.0.0svn
BlockCounter.h
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1 //==- BlockCounter.h - ADT for counting block visits ---------------*- C++ -*-//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines BlockCounter, an abstract data type used to count
10 // the number of times a given block has been visited along a path
11 // analyzed by CoreEngine.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_BLOCKCOUNTER_H
16 #define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_BLOCKCOUNTER_H
17 
18 #include "llvm/Support/Allocator.h"
19 
20 namespace clang {
21 
22 class StackFrameContext;
23 
24 namespace ento {
25 
26 /// \class BlockCounter
27 /// An abstract data type used to count the number of times a given
28 /// block has been visited along a path analyzed by CoreEngine.
29 class BlockCounter {
30  void *Data;
31 
32  BlockCounter(void *D) : Data(D) {}
33 
34 public:
35  BlockCounter() : Data(nullptr) {}
36 
37  unsigned getNumVisited(const StackFrameContext *CallSite,
38  unsigned BlockID) const;
39 
40  class Factory {
41  void *F;
42  public:
43  Factory(llvm::BumpPtrAllocator& Alloc);
44  ~Factory();
45 
48  const StackFrameContext *CallSite,
49  unsigned BlockID);
50  };
51 
52  friend class Factory;
53 };
54 
55 } // end GR namespace
56 
57 } // end clang namespace
58 
59 #endif
An abstract data type used to count the number of times a given block has been visited along a path a...
Definition: BlockCounter.h:29
Factory(llvm::BumpPtrAllocator &Alloc)
unsigned getNumVisited(const StackFrameContext *CallSite, unsigned BlockID) const
Dataflow Directional Tag Classes.
BlockCounter IncrementCount(BlockCounter BC, const StackFrameContext *CallSite, unsigned BlockID)