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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_DEBUG_STACK_TRACE_H_ | 5 #ifndef BASE_DEBUG_STACK_TRACE_H_ |
6 #define BASE_DEBUG_STACK_TRACE_H_ | 6 #define BASE_DEBUG_STACK_TRACE_H_ |
7 | 7 |
8 #include <iosfwd> | 8 #include <iosfwd> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/base_export.h" | 11 #include "base/base_export.h" |
12 #include "build/build_config.h" | 12 #include "build/build_config.h" |
13 | 13 |
14 #if defined(OS_POSIX) | 14 #if defined(OS_POSIX) |
15 #include <unistd.h> | 15 #include <unistd.h> |
16 #endif | 16 #endif |
17 | 17 |
18 #if defined(OS_WIN) | 18 #if defined(OS_WIN) |
19 struct _EXCEPTION_POINTERS; | 19 struct _EXCEPTION_POINTERS; |
| 20 struct _CONTEXT; |
20 #endif | 21 #endif |
21 | 22 |
22 namespace base { | 23 namespace base { |
23 namespace debug { | 24 namespace debug { |
24 | 25 |
25 // Enables stack dump to console output on exception and signals. | 26 // Enables stack dump to console output on exception and signals. |
26 // When enabled, the process will quit immediately. This is meant to be used in | 27 // When enabled, the process will quit immediately. This is meant to be used in |
27 // unit_tests only! This is not thread-safe: only call from main thread. | 28 // unit_tests only! This is not thread-safe: only call from main thread. |
28 BASE_EXPORT bool EnableInProcessStackDumping(); | 29 BASE_EXPORT bool EnableInProcessStackDumping(); |
29 | 30 |
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47 // Creates a stacktrace from an existing array of instruction | 48 // Creates a stacktrace from an existing array of instruction |
48 // pointers (such as returned by Addresses()). |count| will be | 49 // pointers (such as returned by Addresses()). |count| will be |
49 // trimmed to |kMaxTraces|. | 50 // trimmed to |kMaxTraces|. |
50 StackTrace(const void* const* trace, size_t count); | 51 StackTrace(const void* const* trace, size_t count); |
51 | 52 |
52 #if defined(OS_WIN) | 53 #if defined(OS_WIN) |
53 // Creates a stacktrace for an exception. | 54 // Creates a stacktrace for an exception. |
54 // Note: this function will throw an import not found (StackWalk64) exception | 55 // Note: this function will throw an import not found (StackWalk64) exception |
55 // on system without dbghelp 5.1. | 56 // on system without dbghelp 5.1. |
56 StackTrace(const _EXCEPTION_POINTERS* exception_pointers); | 57 StackTrace(const _EXCEPTION_POINTERS* exception_pointers); |
| 58 StackTrace(const _CONTEXT* context); |
57 #endif | 59 #endif |
58 | 60 |
59 // Copying and assignment are allowed with the default functions. | 61 // Copying and assignment are allowed with the default functions. |
60 | 62 |
61 ~StackTrace(); | 63 ~StackTrace(); |
62 | 64 |
63 // Gets an array of instruction pointer values. |*count| will be set to the | 65 // Gets an array of instruction pointer values. |*count| will be set to the |
64 // number of elements in the returned array. | 66 // number of elements in the returned array. |
65 const void* const* Addresses(size_t* count) const; | 67 const void* const* Addresses(size_t* count) const; |
66 | 68 |
67 // Prints the stack trace to stderr. | 69 // Prints the stack trace to stderr. |
68 void Print() const; | 70 void Print() const; |
69 | 71 |
70 #if !defined(__UCLIBC__) | 72 #if !defined(__UCLIBC__) |
71 // Resolves backtrace to symbols and write to stream. | 73 // Resolves backtrace to symbols and write to stream. |
72 void OutputToStream(std::ostream* os) const; | 74 void OutputToStream(std::ostream* os) const; |
73 #endif | 75 #endif |
74 | 76 |
75 // Resolves backtrace to symbols and returns as string. | 77 // Resolves backtrace to symbols and returns as string. |
76 std::string ToString() const; | 78 std::string ToString() const; |
77 | 79 |
78 private: | 80 private: |
| 81 #if defined(OS_WIN) |
| 82 void InitTrace(_CONTEXT* context_record); |
| 83 #endif |
| 84 |
79 // From http://msdn.microsoft.com/en-us/library/bb204633.aspx, | 85 // From http://msdn.microsoft.com/en-us/library/bb204633.aspx, |
80 // the sum of FramesToSkip and FramesToCapture must be less than 63, | 86 // the sum of FramesToSkip and FramesToCapture must be less than 63, |
81 // so set it to 62. Even if on POSIX it could be a larger value, it usually | 87 // so set it to 62. Even if on POSIX it could be a larger value, it usually |
82 // doesn't give much more information. | 88 // doesn't give much more information. |
83 static const int kMaxTraces = 62; | 89 static const int kMaxTraces = 62; |
84 | 90 |
85 void* trace_[kMaxTraces]; | 91 void* trace_[kMaxTraces]; |
86 | 92 |
87 // The number of valid frames in |trace_|. | 93 // The number of valid frames in |trace_|. |
88 size_t count_; | 94 size_t count_; |
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103 int base, | 109 int base, |
104 size_t padding); | 110 size_t padding); |
105 #endif // defined(OS_POSIX) && !defined(OS_ANDROID) | 111 #endif // defined(OS_POSIX) && !defined(OS_ANDROID) |
106 | 112 |
107 } // namespace internal | 113 } // namespace internal |
108 | 114 |
109 } // namespace debug | 115 } // namespace debug |
110 } // namespace base | 116 } // namespace base |
111 | 117 |
112 #endif // BASE_DEBUG_STACK_TRACE_H_ | 118 #endif // BASE_DEBUG_STACK_TRACE_H_ |
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