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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_FAULT_HANDLER_H_
#define ART_RUNTIME_FAULT_HANDLER_H_
#include <signal.h>
#include <vector>
#include <setjmp.h>
#include <stdint.h>
#include "base/mutex.h" // For annotalysis.
namespace art {
namespace mirror {
class ArtMethod;
} // namespace mirror
class FaultHandler;
class FaultManager {
public:
FaultManager();
~FaultManager();
void Init();
void HandleFault(int sig, siginfo_t* info, void* context);
void AddHandler(FaultHandler* handler, bool generated_code);
void RemoveHandler(FaultHandler* handler);
void GetMethodAndReturnPCAndSP(siginfo_t* siginfo, void* context, mirror::ArtMethod** out_method,
uintptr_t* out_return_pc, uintptr_t* out_sp);
bool IsInGeneratedCode(siginfo_t* siginfo, void *context, bool check_dex_pc)
NO_THREAD_SAFETY_ANALYSIS;
private:
std::vector<FaultHandler*> generated_code_handlers_;
std::vector<FaultHandler*> other_handlers_;
struct sigaction oldaction_;
DISALLOW_COPY_AND_ASSIGN(FaultManager);
};
class FaultHandler {
public:
explicit FaultHandler(FaultManager* manager);
virtual ~FaultHandler() {}
FaultManager* GetFaultManager() {
return manager_;
}
virtual bool Action(int sig, siginfo_t* siginfo, void* context) = 0;
protected:
FaultManager* const manager_;
private:
DISALLOW_COPY_AND_ASSIGN(FaultHandler);
};
class NullPointerHandler FINAL : public FaultHandler {
public:
explicit NullPointerHandler(FaultManager* manager);
bool Action(int sig, siginfo_t* siginfo, void* context) OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(NullPointerHandler);
};
class SuspensionHandler FINAL : public FaultHandler {
public:
explicit SuspensionHandler(FaultManager* manager);
bool Action(int sig, siginfo_t* siginfo, void* context) OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(SuspensionHandler);
};
class StackOverflowHandler FINAL : public FaultHandler {
public:
explicit StackOverflowHandler(FaultManager* manager);
bool Action(int sig, siginfo_t* siginfo, void* context) OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(StackOverflowHandler);
};
class JavaStackTraceHandler FINAL : public FaultHandler {
public:
explicit JavaStackTraceHandler(FaultManager* manager);
bool Action(int sig, siginfo_t* siginfo, void* context) OVERRIDE NO_THREAD_SAFETY_ANALYSIS;
private:
DISALLOW_COPY_AND_ASSIGN(JavaStackTraceHandler);
};
// Statically allocated so the the signal handler can Get access to it.
extern FaultManager fault_manager;
} // namespace art
#endif // ART_RUNTIME_FAULT_HANDLER_H_
|
