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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 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 #include <objbase.h> | 5 #include <objbase.h> |
6 #include <windows.h> | 6 #include <windows.h> |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <utility> | 9 #include <utility> |
10 | 10 |
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33 int i = 0; | 33 int i = 0; |
34 for (; (i < max_stack_size) && context->Rip; ++i) { | 34 for (; (i < max_stack_size) && context->Rip; ++i) { |
35 // Try to look up unwind metadata for the current function. | 35 // Try to look up unwind metadata for the current function. |
36 ULONG64 image_base; | 36 ULONG64 image_base; |
37 PRUNTIME_FUNCTION runtime_function = | 37 PRUNTIME_FUNCTION runtime_function = |
38 RtlLookupFunctionEntry(context->Rip, &image_base, nullptr); | 38 RtlLookupFunctionEntry(context->Rip, &image_base, nullptr); |
39 | 39 |
40 instruction_pointers[i] = reinterpret_cast<const void*>(context->Rip); | 40 instruction_pointers[i] = reinterpret_cast<const void*>(context->Rip); |
41 | 41 |
42 if (runtime_function) { | 42 if (runtime_function) { |
43 KNONVOLATILE_CONTEXT_POINTERS nvcontext = {0}; | 43 KNONVOLATILE_CONTEXT_POINTERS nvcontext = {}; |
44 void* handler_data; | 44 void* handler_data; |
45 ULONG64 establisher_frame; | 45 ULONG64 establisher_frame; |
46 RtlVirtualUnwind(0, image_base, context->Rip, runtime_function, context, | 46 RtlVirtualUnwind(0, image_base, context->Rip, runtime_function, context, |
47 &handler_data, &establisher_frame, &nvcontext); | 47 &handler_data, &establisher_frame, &nvcontext); |
48 } else { | 48 } else { |
49 // If we don't have a RUNTIME_FUNCTION, then in theory this should be a | 49 // If we don't have a RUNTIME_FUNCTION, then in theory this should be a |
50 // leaf function whose frame contains only a return address, at | 50 // leaf function whose frame contains only a return address, at |
51 // RSP. However, crash data also indicates that some third party libraries | 51 // RSP. However, crash data also indicates that some third party libraries |
52 // do not provide RUNTIME_FUNCTION information for non-leaf functions. We | 52 // do not provide RUNTIME_FUNCTION information for non-leaf functions. We |
53 // could manually unwind the stack in the former case, but attempting to | 53 // could manually unwind the stack in the former case, but attempting to |
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348 | 348 |
349 if (thread_handle) { | 349 if (thread_handle) { |
350 return scoped_ptr<NativeStackSampler>(new NativeStackSamplerWin( | 350 return scoped_ptr<NativeStackSampler>(new NativeStackSamplerWin( |
351 win::ScopedHandle(thread_handle))); | 351 win::ScopedHandle(thread_handle))); |
352 } | 352 } |
353 #endif | 353 #endif |
354 return scoped_ptr<NativeStackSampler>(); | 354 return scoped_ptr<NativeStackSampler>(); |
355 } | 355 } |
356 | 356 |
357 } // namespace base | 357 } // namespace base |
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