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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/bootstrap_natives.h" | 5 #include "vm/bootstrap_natives.h" |
6 #include "vm/exceptions.h" | 6 #include "vm/exceptions.h" |
7 #include "vm/object_store.h" | 7 #include "vm/object_store.h" |
8 #include "vm/runtime_entry.h" | 8 #include "vm/runtime_entry.h" |
9 #include "vm/stack_frame.h" | 9 #include "vm/stack_frame.h" |
10 | 10 |
11 namespace dart { | 11 namespace dart { |
12 | 12 |
13 static void IterateFrames(const GrowableObjectArray& code_list, | 13 static void IterateFrames(const GrowableObjectArray& code_list, |
14 const GrowableObjectArray& pc_offset_list) { | 14 const GrowableObjectArray& pc_offset_list, |
| 15 int skip_frames) { |
15 StackFrameIterator frames(StackFrameIterator::kDontValidateFrames); | 16 StackFrameIterator frames(StackFrameIterator::kDontValidateFrames); |
16 StackFrame* frame = frames.NextFrame(); | 17 StackFrame* frame = frames.NextFrame(); |
17 ASSERT(frame != NULL); // We expect to find a dart invocation frame. | 18 ASSERT(frame != NULL); // We expect to find a dart invocation frame. |
18 Code& code = Code::Handle(); | 19 Code& code = Code::Handle(); |
19 Smi& offset = Smi::Handle(); | 20 Smi& offset = Smi::Handle(); |
20 while (frame != NULL) { | 21 while (frame != NULL) { |
21 if (frame->IsDartFrame()) { | 22 if (frame->IsDartFrame()) { |
22 code = frame->LookupDartCode(); | 23 if (skip_frames > 0) { |
23 offset = Smi::New(frame->pc() - code.EntryPoint()); | 24 skip_frames--; |
24 code_list.Add(code); | 25 } else { |
25 pc_offset_list.Add(offset); | 26 code = frame->LookupDartCode(); |
| 27 offset = Smi::New(frame->pc() - code.EntryPoint()); |
| 28 code_list.Add(code); |
| 29 pc_offset_list.Add(offset); |
| 30 } |
26 } | 31 } |
27 frame = frames.NextFrame(); | 32 frame = frames.NextFrame(); |
28 } | 33 } |
29 } | 34 } |
30 | 35 |
| 36 // Creates a Stacktrace object from the current stack. |
| 37 // |
| 38 // Skips the first skip_frames Dart frames. |
| 39 static const Stacktrace& GetCurrentStacktrace(int skip_frames) { |
| 40 const GrowableObjectArray& code_list = |
| 41 GrowableObjectArray::Handle(GrowableObjectArray::New()); |
| 42 const GrowableObjectArray& pc_offset_list = |
| 43 GrowableObjectArray::Handle(GrowableObjectArray::New()); |
| 44 IterateFrames(code_list, pc_offset_list, skip_frames); |
| 45 const Array& code_array = Array::Handle(Array::MakeArray(code_list)); |
| 46 const Array& pc_offset_array = |
| 47 Array::Handle(Array::MakeArray(pc_offset_list)); |
| 48 const Stacktrace& stacktrace = Stacktrace::Handle( |
| 49 Stacktrace::New(code_array, pc_offset_array)); |
| 50 return stacktrace; |
| 51 } |
31 | 52 |
32 // An utility method for convenient printing of dart stack traces when | 53 // An utility method for convenient printing of dart stack traces when |
33 // inside 'gdb'. Note: This function will only work when there is a | 54 // inside 'gdb'. Note: This function will only work when there is a |
34 // valid exit frame information. It will not work when a breakpoint is | 55 // valid exit frame information. It will not work when a breakpoint is |
35 // set in dart code and control is got inside 'gdb' without going through | 56 // set in dart code and control is got inside 'gdb' without going through |
36 // the runtime or native transition stub. | 57 // the runtime or native transition stub. |
37 void _printCurrentStacktrace() { | 58 void _printCurrentStacktrace() { |
38 const GrowableObjectArray& code_list = | 59 const Stacktrace& stacktrace = GetCurrentStacktrace(0); |
39 GrowableObjectArray::Handle(GrowableObjectArray::New()); | |
40 const GrowableObjectArray& pc_offset_list = | |
41 GrowableObjectArray::Handle(GrowableObjectArray::New()); | |
42 IterateFrames(code_list, pc_offset_list); | |
43 const Array& code_array = Array::Handle(Array::MakeArray(code_list)); | |
44 const Array& pc_offset_array = | |
45 Array::Handle(Array::MakeArray(pc_offset_list)); | |
46 const Stacktrace& stacktrace = Stacktrace::Handle( | |
47 Stacktrace::New(code_array, pc_offset_array)); | |
48 OS::PrintErr("=== Current Trace:\n%s===\n", stacktrace.ToCString()); | 60 OS::PrintErr("=== Current Trace:\n%s===\n", stacktrace.ToCString()); |
49 } | 61 } |
50 | 62 |
| 63 DEFINE_NATIVE_ENTRY(StackTrace_current, 0) { |
| 64 const Stacktrace& stacktrace = GetCurrentStacktrace(1); |
| 65 return stacktrace.raw(); |
| 66 } |
| 67 |
51 } // namespace dart | 68 } // namespace dart |
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