Ryan Macnak
e6574a7964
Useful for profiling the vm-service and kernel-service isolates. Bug: https://github.com/dart-lang/sdk/issues/38553 Change-Id: I9cc562b5089ad01a5f797799d1105a4a8cf910e0 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/118650 Reviewed-by: Alexander Markov <alexmarkov@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_STACK_TRACE_H_
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#define RUNTIME_VM_STACK_TRACE_H_
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#include "vm/allocation.h"
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#include "vm/flag_list.h"
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#include "vm/object.h"
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namespace dart {
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class StackTraceUtils : public AllStatic {
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public:
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/// Counts the number of stack frames.
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/// Skips over the first |skip_frames|.
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/// If |async_function| is not null, stops at the function that has
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/// |async_function| as its parent.
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static intptr_t CountFrames(Thread* thread,
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int skip_frames,
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const Function& async_function);
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/// Collects |count| frames into |code_array| and |pc_offset_array|.
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/// Writing begins at |array_offset|.
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/// Skips over the first |skip_frames|.
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/// Returns the number of frames collected.
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static intptr_t CollectFrames(Thread* thread,
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const Array& code_array,
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const Array& pc_offset_array,
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intptr_t array_offset,
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intptr_t count,
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int skip_frames);
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/// If |thread| has no async_stack_trace, does nothing.
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/// Populates |async_function| with the top function of the async stack
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/// trace. Populates |async_stack_trace|, |async_code_array|, and
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/// |async_pc_offset_array| with the thread's async_stack_trace.
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/// Returns the length of the asynchronous stack trace.
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static intptr_t ExtractAsyncStackTraceInfo(Thread* thread,
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Function* async_function,
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StackTrace* async_stack_trace,
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Array* async_code_array,
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Array* async_pc_offset_array);
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};
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} // namespace dart
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#endif // RUNTIME_VM_STACK_TRACE_H_
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