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Capture actionable STEP-LIMIT diagnostics

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gamer147
2026-07-29 18:51:06 -04:00
parent 32c5d1e901
commit f7751c2b93
7 changed files with 146 additions and 16 deletions
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45
engine/Age.Engine.Tests/GodotTraceSinkTests.cs
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@@ -1,5 +1,6 @@
using Age.Engine.Diagnostics;
using Age.Engine.Model;
using Age.Engine.Sys4;
public class GodotTraceSinkTests
{
@@ -28,4 +29,48 @@ public class GodotTraceSinkTests
Assert.Equal(0x2400 + 12, snapshot.RecentSteps[0].Offset);
Assert.Equal(0x2400 + 139, snapshot.RecentSteps[^1].Offset);
}
[Fact]
public void HaltSnapshotRetainsDeepestStackBeforeFramesUnwind()
{
using var locator = new PageLocatorState("SYSTEM4", null);
var sink = new GodotTraceSink(locator);
sink.Emit(TraceEvent.FrameEnter("SYSTEM4.BIN", 0, FrameCause.TopScene));
sink.Emit(TraceEvent.FrameEnter("FIELD.BIN", 1, FrameCause.CallScript, 0x337d));
sink.Emit(TraceEvent.FrameEnter("SC0600.BIN", 2, FrameCause.CallScript, 0x1202));
sink.Emit(TraceEvent.Step(10,
new Instruction(0x3403, 0x8f, new[] { new Operand(0, 0x6f28) }), 2));
sink.Emit(TraceEvent.FrameExit("SC0600.BIN", 2, "Halted"));
sink.Emit(TraceEvent.FrameExit("FIELD.BIN", 1, "Halted"));
sink.Emit(TraceEvent.FrameExit("SYSTEM4.BIN", 0, "Halted"));
GodotTraceSnapshot snapshot = Assert.IsType<GodotTraceSnapshot>(sink.HaltSnapshot);
Assert.Equal("SC0600.BIN", snapshot.CurrentScript);
Assert.Equal(0x3403, snapshot.CurrentOffset);
Assert.Equal(new[] { "SYSTEM4.BIN", "FIELD.BIN", "SC0600.BIN" }, snapshot.CallStack);
}
[Fact]
public void StepLimitReportShowsCoordinateFramesHotSitesAndTail()
{
OpcodeTable table = OpcodeTableJson.Load(Paths.OpcodesJson);
var recent = new[]
{
new GodotTraceStepSnapshot("FIELD.BIN", 0x100, 0x55, 1),
new GodotTraceStepSnapshot("FIELD.BIN", 0x107, 0x8e, 1),
new GodotTraceStepSnapshot("FIELD.BIN", 0x100, 0x55, 1),
};
var snapshot = new GodotTraceSnapshot(
"FIELD.BIN", 0x100, 0x55, 1,
new[] { "SYSTEM4.BIN", "FIELD.BIN" }, recent);
string report = StepLimitDiagnosticFormatter.Format(snapshot, table, topSites: 2, tailSteps: 2);
Assert.Contains("[step-limit] last: FIELD@0x100 op=0x055 mov depth=1", report);
Assert.Contains("[step-limit] frames: SYSTEM4 > FIELD", report);
Assert.Contains("2x FIELD@0x100 op=0x055 mov", report);
Assert.DoesNotContain("SYSTEM4@0x", report);
Assert.EndsWith("[step-limit] FIELD@0x100 op=0x055 mov", report);
}
}