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[wasm][debugger] Added support for stepper boundary attribute #63991

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Merged
ilonatommy merged 19 commits into from
Jan 20, 2022
Merged

[wasm][debugger] Added support for stepper boundary attribute #63991

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b0882dd
Hidden methods and step through methods behave the same way.
ilonatommy Jan 10, 2022
49f9ec8
Perpared flow for setting JustMyCode in the future.
ilonatommy Jan 11, 2022
50e74fa
Tests for JustMyCode setting before debug launch.
ilonatommy Jan 12, 2022
c41add3
Transformed into dynamic JustMyCode change flow.
ilonatommy Jan 12, 2022
750947d
JustMyCode disabled, first 3 cases solved.
ilonatommy Jan 13, 2022
4ba2114
Finished behavior for JMC disabled (with 1 difference).
ilonatommy Jan 14, 2022
ea4d612
JMC enabled: stepIn np bp + stepIn bp + resume bp.
ilonatommy Jan 14, 2022
ce438f7
Functional version (with minor deviations from expected behavior).
ilonatommy Jan 14, 2022
1dd4988
Refactoring.
ilonatommy Jan 14, 2022
89480db
Merge branch 'main' into step-through-57085
ilonatommy Jan 14, 2022
442c2de
All tests for NonUserCode work.
ilonatommy Jan 17, 2022
3016aa6
Merge branch 'non-user-code-57085' into stepper-bounary-57085
ilonatommy Jan 17, 2022
a3d42d3
Fix line number after adding code above.
ilonatommy Jan 18, 2022
91e26a8
Stepper boundary with tests.
ilonatommy Jan 18, 2022
b95e9f7
Save information about multiple decorators.
ilonatommy Jan 19, 2022
547a5cf
Merge with main.
ilonatommy Jan 19, 2022
189c1b4
Fix error in merge.
ilonatommy Jan 19, 2022
418c64c
Merge with NonUserCode.
ilonatommy Jan 19, 2022
94f4423
Merge with main - removed duplicated tests.
ilonatommy Jan 20, 2022
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33 changes: 23 additions & 10 deletions src/mono/wasm/debugger/BrowserDebugProxy/DebugStore.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -332,8 +332,7 @@ internal class MethodInfo
internal LocalScopeHandleCollection localScopes;
public bool IsStatic() => (methodDef.Attributes & MethodAttributes.Static) != 0;
public int IsAsync { get; set; }
public bool IsHiddenFromDebugger { get; }
public bool HasStepThroughAttribute { get; }
public DebuggerAttributesInfo DebuggerAttrInfo { get; set; }
public TypeInfo TypeInfo { get; }

public MethodInfo(AssemblyInfo assembly, MethodDefinitionHandle methodDefHandle, int token, SourceFile source, TypeInfo type, MetadataReader asmMetadataReader, MetadataReader pdbMetadataReader)
Expand Down Expand Up @@ -371,22 +370,28 @@ public MethodInfo(AssemblyInfo assembly, MethodDefinitionHandle methodDefHandle,
StartLocation = new SourceLocation(this, start);
EndLocation = new SourceLocation(this, end);

DebuggerAttrInfo = new DebuggerAttributesInfo();
foreach (var cattr in methodDef.GetCustomAttributes())
{
var ctorHandle = asmMetadataReader.GetCustomAttribute(cattr).Constructor;
if (ctorHandle.Kind == HandleKind.MemberReference)
{
var container = asmMetadataReader.GetMemberReference((MemberReferenceHandle)ctorHandle).Parent;
var name = asmMetadataReader.GetString(asmMetadataReader.GetTypeReference((TypeReferenceHandle)container).Name);
if (name == "DebuggerHiddenAttribute")
switch (name)
{
IsHiddenFromDebugger = true;
break;
}
if (name == "DebuggerStepThroughAttribute")
{
HasStepThroughAttribute = true;
break;
case "DebuggerHiddenAttribute":
DebuggerAttrInfo.HasDebuggerHidden = true;
break;
case "DebuggerStepThroughAttribute":
DebuggerAttrInfo.HasStepThrough = true;
break;
case "DebuggerNonUserCodeAttribute":
DebuggerAttrInfo.HasNonUserCode = true;
break;
case "DebuggerStepperBoundaryAttribute":
DebuggerAttrInfo.HasStepperBoundary = true;
break;
}

}
Expand Down Expand Up @@ -478,6 +483,14 @@ public VarInfo[] GetLiveVarsAt(int offset)
}

public override string ToString() => "MethodInfo(" + Name + ")";

public class DebuggerAttributesInfo
{
public bool HasDebuggerHidden { get; internal set; }
public bool HasStepThrough { get; internal set; }
public bool HasNonUserCode { get; internal set; }
public bool HasStepperBoundary { get; internal set; }
}
}

internal class TypeInfo
Expand Down
35 changes: 21 additions & 14 deletions src/mono/wasm/debugger/BrowserDebugProxy/MonoProxy.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -853,28 +853,35 @@ private async Task<bool> SendCallStack(SessionId sessionId, ExecutionContext con
if (shouldReturn)
return true;

if (j == 0 && (method?.Info.HasStepThroughAttribute == true || method?.Info.IsHiddenFromDebugger == true))
if (j == 0 &&
(method?.Info.DebuggerAttrInfo.HasStepThrough == true ||
method?.Info.DebuggerAttrInfo.HasDebuggerHidden == true ||
method?.Info.DebuggerAttrInfo.HasStepperBoundary == true ||
(method?.Info.DebuggerAttrInfo.HasNonUserCode == true && JustMyCode)))
{
if (method.Info.IsHiddenFromDebugger)
if (method.Info.DebuggerAttrInfo.HasDebuggerHidden ||
(method.Info.DebuggerAttrInfo.HasStepperBoundary && event_kind == EventKind.Step))
{
if (event_kind == EventKind.Step)
context.IsSkippingHiddenMethod = true;
if (await SkipMethod(isSkippable: true, shouldBeSkipped: true, StepKind.Out))
return true;
}

if (event_kind == EventKind.Step ||
(JustMyCode && (event_kind == EventKind.Breakpoint || event_kind == EventKind.UserBreak)))
if (!method.Info.DebuggerAttrInfo.HasStepperBoundary)
{
if (context.IsResumedAfterBp)
context.IsResumedAfterBp = false;
else if (event_kind != EventKind.UserBreak)
context.IsSteppingThroughMethod = true;
if (await SkipMethod(isSkippable: true, shouldBeSkipped: true, StepKind.Out))
return true;
if (event_kind == EventKind.Step ||
(JustMyCode && (event_kind == EventKind.Breakpoint || event_kind == EventKind.UserBreak)))
{
if (context.IsResumedAfterBp)
context.IsResumedAfterBp = false;
else if (event_kind != EventKind.UserBreak)
context.IsSteppingThroughMethod = true;
if (await SkipMethod(isSkippable: true, shouldBeSkipped: true, StepKind.Out))
return true;
}
if (event_kind == EventKind.Breakpoint)
context.IsResumedAfterBp = true;
}
if (event_kind == EventKind.Breakpoint)
context.IsResumedAfterBp = true;
}

SourceLocation location = method?.Info.GetLocationByIl(il_pos);
Expand Down Expand Up @@ -1443,7 +1450,7 @@ private async Task SetBreakpoint(SessionId sessionId, DebugStore store, Breakpoi
{
SourceLocation loc = sourceId.First();
req.Method = loc.IlLocation.Method;
if (req.Method.IsHiddenFromDebugger)
if (req.Method.DebuggerAttrInfo.HasDebuggerHidden)
continue;

Breakpoint bp = await SetMonoBreakpoint(sessionId, req.Id, loc, req.Condition, token);
Expand Down
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