clang 20.0.0git
ProgramState.cpp
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1//= ProgramState.cpp - Path-Sensitive "State" for tracking values --*- 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 implements ProgramState and ProgramStateManager.
10//
11//===----------------------------------------------------------------------===//
12
14#include "clang/Analysis/CFG.h"
21#include "llvm/Support/raw_ostream.h"
22#include <optional>
23
24using namespace clang;
25using namespace ento;
26
27namespace clang { namespace ento {
28/// Increments the number of times this state is referenced.
29
30void ProgramStateRetain(const ProgramState *state) {
31 ++const_cast<ProgramState*>(state)->refCount;
32}
33
34/// Decrement the number of times this state is referenced.
36 assert(state->refCount > 0);
37 ProgramState *s = const_cast<ProgramState*>(state);
38 if (--s->refCount == 0) {
39 ProgramStateManager &Mgr = s->getStateManager();
40 Mgr.StateSet.RemoveNode(s);
41 s->~ProgramState();
42 Mgr.freeStates.push_back(s);
43 }
44}
45}}
46
49 : stateMgr(mgr),
50 Env(env),
51 store(st.getStore()),
52 GDM(gdm),
53 refCount(0) {
55}
56
58 : stateMgr(RHS.stateMgr), Env(RHS.Env), store(RHS.store), GDM(RHS.GDM),
59 PosteriorlyOverconstrained(RHS.PosteriorlyOverconstrained), refCount(0) {
61}
62
64 if (store)
66}
67
68int64_t ProgramState::getID() const {
69 return getStateManager().Alloc.identifyKnownAlignedObject<ProgramState>(this);
70}
71
73 StoreManagerCreator CreateSMgr,
74 ConstraintManagerCreator CreateCMgr,
75 llvm::BumpPtrAllocator &alloc,
76 ExprEngine *ExprEng)
77 : Eng(ExprEng), EnvMgr(alloc), GDMFactory(alloc),
78 svalBuilder(createSimpleSValBuilder(alloc, Ctx, *this)),
79 CallEventMgr(new CallEventManager(alloc)), Alloc(alloc) {
80 StoreMgr = (*CreateSMgr)(*this);
81 ConstraintMgr = (*CreateCMgr)(*this, ExprEng);
82}
83
84