fix(debugger): reduce code origin startup time

Start with a benchmark to measure opportunities for improvements

refs: DEBUG-4605

Author: tylfin

riotfile.py

@@ -657,6 +657,7 @@ def select_pys(min_version: str = MIN_PYTHON_VERSION, max_version: str = MAX_PYT
                 "httpretty": latest,
                 "typing-extensions": latest,
                 "pytest-asyncio": latest,
+                "pytest-benchmark": latest,
             },
             pys=select_pys(),
         ),

tests/debugging/origin/test_span.py

@@ -1,5 +1,6 @@
 from functools import partial
 from pathlib import Path
+import time
 import typing as t
 
 import pytest
@@ -169,3 +170,44 @@ def entry_call():
         assert _exit.get_tag("_dd.code_origin.type") is None
         assert _exit.get_tag("_dd.code_origin.frames.0.file") is None
         assert _exit.get_tag("_dd.code_origin.frames.0.line") is None
+
+
+def test_instrument_view_benchmark(benchmark):
+    """Benchmark instrument_view performance when wrapping functions."""
+    MockSpanCodeOriginProcessorEntry.enable()
+
+    try:
+
+        def setup():
+            """Create a unique function to wrap for each iteration."""
+
+            # Create a more realistic view function similar to Flask views
+            # with decorators, imports, and more complex code
+            def realistic_view(request_arg, *args, **kwargs):
+                """A realistic view function with actual code."""
+                import json
+                import os
+
+                data = {"status": "ok", "items": []}
+                for i in range(10):
+                    item = {
+                        "id": i,
+                        "name": f"item_{i}",
+                        "value": i * 100,
+                    }
+                    data["items"].append(item)
+
+                result = json.dumps(data)
+                return result
+
+            return (realistic_view,), {}
+
+        # Benchmark the wrapping operation
+        benchmark.pedantic(
+            MockSpanCodeOriginProcessorEntry.instrument_view,
+            setup=setup,
+            rounds=100,
+        )
+
+    finally:
+        MockSpanCodeOriginProcessorEntry.disable()