aboutsummaryrefslogtreecommitdiff
path: root/include/clang/StaticAnalyzer/Core/PathSensitive/BlockCounter.h
blob: 7d0fdfb5f11f925ec38b0069d6b2b76c27a972a3 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
//==- BlockCounter.h - ADT for counting block visits ---------------*- C++ -*-//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//  This file defines BlockCounter, an abstract data type used to count
//  the number of times a given block has been visited along a path
//  analyzed by CoreEngine.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_GR_BLOCKCOUNTER
#define LLVM_CLANG_GR_BLOCKCOUNTER

namespace llvm {
  class BumpPtrAllocator;
}

namespace clang {

class StackFrameContext;

namespace ento {

class BlockCounter {
  void* Data;

  BlockCounter(void* D) : Data(D) {}

public:
  BlockCounter() : Data(0) {}

  unsigned getNumVisited(const StackFrameContext *CallSite, 
                         unsigned BlockID) const;

  class Factory {
    void* F;
  public:
    Factory(llvm::BumpPtrAllocator& Alloc);
    ~Factory();

    BlockCounter GetEmptyCounter();
    BlockCounter IncrementCount(BlockCounter BC, 
                                  const StackFrameContext *CallSite,
                                  unsigned BlockID);
  };

  friend class Factory;
};

} // end GR namespace

} // end clang namespace

#endif