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1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef BASE_PROFILER_WIN32_STACK_FRAME_UNWINDER_H_ | |
6 #define BASE_PROFILER_WIN32_STACK_FRAME_UNWINDER_H_ | |
7 | |
8 #include <windows.h> | |
9 | |
10 #include "base/base_export.h" | |
11 #include "base/macros.h" | |
12 | |
13 namespace base { | |
14 | |
15 #if !defined(_WIN64) | |
16 // Allows code to compile for x86. Actual support for x86 will require either | |
17 // refactoring these interfaces or separate architecture-specific interfaces. | |
18 using PRUNTIME_FUNCTION = void*; | |
19 #endif // !defined(_WIN64) | |
20 | |
21 // Instances of this class are expected to be created and destroyed for each | |
22 // stack unwinding, outside of SuspendThread/ResumeThread. | |
23 class BASE_EXPORT Win32StackFrameUnwinder { | |
24 public: | |
25 // Interface for Win32 unwind-related functionality this class depends | |
26 // on. Provides a seam for testing. | |
27 class BASE_EXPORT UnwindFunctions { | |
28 public: | |
29 virtual ~UnwindFunctions(); | |
30 | |
31 virtual PRUNTIME_FUNCTION LookupFunctionEntry(DWORD64 program_counter, | |
Nico
2015/08/18 23:20:24
LookUp ("look up" is a verb, "lookup" a noun)
Mike Wittman
2015/08/18 23:43:10
Sure, but I'm just mimicking the Win32 API names h
| |
32 PDWORD64 image_base) = 0; | |
33 virtual void VirtualUnwind(DWORD64 image_base, | |
34 DWORD64 program_counter, | |
35 PRUNTIME_FUNCTION runtime_function, | |
36 CONTEXT* context) = 0; | |
37 protected: | |
38 UnwindFunctions(); | |
39 | |
40 private: | |
41 DISALLOW_COPY_AND_ASSIGN(UnwindFunctions); | |
42 }; | |
43 | |
44 class BASE_EXPORT Win32UnwindFunctions : public UnwindFunctions { | |
45 public: | |
46 Win32UnwindFunctions(); | |
47 | |
48 virtual PRUNTIME_FUNCTION LookupFunctionEntry(DWORD64 program_counter, | |
49 PDWORD64 image_base) override; | |
50 | |
51 virtual void VirtualUnwind(DWORD64 image_base, DWORD64 program_counter, | |
52 PRUNTIME_FUNCTION runtime_function, | |
53 CONTEXT* context) override; | |
54 | |
55 private: | |
56 DISALLOW_COPY_AND_ASSIGN(Win32UnwindFunctions); | |
57 }; | |
58 | |
59 Win32StackFrameUnwinder(); | |
60 ~Win32StackFrameUnwinder(); | |
61 | |
62 bool TryUnwind(CONTEXT* context); | |
63 | |
64 private: | |
65 // This function is for test purposes only. | |
66 Win32StackFrameUnwinder(UnwindFunctions* unwind_functions); | |
67 friend class Win32StackFrameUnwinderTest; | |
68 | |
69 // State associated with each stack unwinding. | |
70 bool at_top_frame_; | |
71 bool unwind_info_present_for_all_frames_; | |
72 const void* pending_blacklisted_module_; | |
73 | |
74 Win32UnwindFunctions win32_unwind_functions_; | |
75 UnwindFunctions* const unwind_functions_; | |
76 | |
77 DISALLOW_COPY_AND_ASSIGN(Win32StackFrameUnwinder); | |
78 }; | |
79 | |
80 } // namespace base | |
81 | |
82 #endif // BASE_PROFILER_WIN32_STACK_FRAME_UNWINDER_H_ | |
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