asiva@google.com
d6aaf0cc94
2. Add tracing of external native functions under --trace-natives flag 3. Added a _printCurrentStacktrace() function so that one could get a dart stack trace under 'gdb' when in a native or runtime function. R=regis@google.com Review URL: https://codereview.chromium.org//23453035 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@27166 260f80e4-7a28-3924-810f-c04153c831b5
132 lines
4.9 KiB
C++
132 lines
4.9 KiB
C++
// Copyright (c) 2013, 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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#include "vm/bootstrap_natives.h"
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#include "vm/exceptions.h"
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#include "vm/object_store.h"
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#include "vm/runtime_entry.h"
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#include "vm/stack_frame.h"
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namespace dart {
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// Get a full stack trace.
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// Arg0: stack trace object.
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// Return value: String that represents the full stack trace.
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DEFINE_NATIVE_ENTRY(Stacktrace_getFullStacktrace, 1) {
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const Stacktrace& trace =
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Stacktrace::CheckedHandle(arguments->NativeArgAt(0));
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return trace.FullStacktrace();
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}
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// Get a concise and pertinent stack trace.
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// Arg0: stack trace object.
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// Return value: String that represents the concise and pertinent stack trace.
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DEFINE_NATIVE_ENTRY(Stacktrace_getStacktrace, 1) {
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const Stacktrace& trace =
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Stacktrace::CheckedHandle(arguments->NativeArgAt(0));
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return String::New(trace.ToCStringInternal(0));
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}
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static void iterateFrames(const GrowableObjectArray& func_list,
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const GrowableObjectArray& code_list,
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const GrowableObjectArray& pc_offset_list) {
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StackFrameIterator frames(StackFrameIterator::kDontValidateFrames);
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StackFrame* frame = frames.NextFrame();
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ASSERT(frame != NULL); // We expect to find a dart invocation frame.
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Function& func = Function::Handle();
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Code& code = Code::Handle();
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Smi& offset = Smi::Handle();
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bool catch_frame_skipped = false; // Tracks if catch frame has been skipped.
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while (frame != NULL) {
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if (frame->IsDartFrame()) {
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code = frame->LookupDartCode();
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if (code.is_optimized()) {
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// For optimized frames, extract all the inlined functions if any
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// into the stack trace.
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for (InlinedFunctionsIterator it(code, frame->pc());
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!it.Done(); it.Advance()) {
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func = it.function();
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code = it.code();
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uword pc = it.pc();
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ASSERT(pc != 0);
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ASSERT(code.EntryPoint() <= pc);
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ASSERT(pc < (code.EntryPoint() + code.Size()));
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if (func.is_visible()) {
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if (!catch_frame_skipped) {
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catch_frame_skipped = true;
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} else {
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offset = Smi::New(pc - code.EntryPoint());
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func_list.Add(func);
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code_list.Add(code);
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pc_offset_list.Add(offset);
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}
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}
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}
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} else {
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offset = Smi::New(frame->pc() - code.EntryPoint());
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func = code.function();
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if (func.is_visible()) {
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if (!catch_frame_skipped) {
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catch_frame_skipped = true;
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} else {
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func_list.Add(func);
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code_list.Add(code);
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pc_offset_list.Add(offset);
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}
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}
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}
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}
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frame = frames.NextFrame();
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}
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}
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// Setup a full stack trace.
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// Arg0: stack trace object.
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// Return value: None.
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DEFINE_NATIVE_ENTRY(Stacktrace_setupFullStacktrace, 1) {
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const Stacktrace& trace =
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Stacktrace::CheckedHandle(arguments->NativeArgAt(0));
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const GrowableObjectArray& func_list =
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GrowableObjectArray::Handle(GrowableObjectArray::New());
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const GrowableObjectArray& code_list =
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GrowableObjectArray::Handle(GrowableObjectArray::New());
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const GrowableObjectArray& pc_offset_list =
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GrowableObjectArray::Handle(GrowableObjectArray::New());
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iterateFrames(func_list, code_list, pc_offset_list);
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const Array& func_array = Array::Handle(Array::MakeArray(func_list));
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const Array& code_array = Array::Handle(Array::MakeArray(code_list));
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const Array& pc_offset_array =
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Array::Handle(Array::MakeArray(pc_offset_list));
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trace.SetCatchStacktrace(func_array, code_array, pc_offset_array);
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return Object::null();
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}
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// An utility method for convenient printing of dart stack traces when
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// inside 'gdb'. Note: This function will only work when there is a
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// valid exit frame information. It will not work when a breakpoint is
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// set in dart code and control is got inside 'gdb' without going through
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// the runtime or native transition stub.
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void _printCurrentStacktrace() {
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const GrowableObjectArray& func_list =
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GrowableObjectArray::Handle(GrowableObjectArray::New());
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const GrowableObjectArray& code_list =
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GrowableObjectArray::Handle(GrowableObjectArray::New());
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const GrowableObjectArray& pc_offset_list =
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GrowableObjectArray::Handle(GrowableObjectArray::New());
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iterateFrames(func_list, code_list, pc_offset_list);
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const Array& func_array = Array::Handle(Array::MakeArray(func_list));
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const Array& code_array = Array::Handle(Array::MakeArray(code_list));
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const Array& pc_offset_array =
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Array::Handle(Array::MakeArray(pc_offset_list));
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const Stacktrace& stacktrace = Stacktrace::Handle(
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Stacktrace::New(func_array, code_array, pc_offset_array));
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OS::Print("%s\n", stacktrace.ToCString());
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}
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} // namespace dart
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