[python_basic_memory] Add first memory correctness check

scenarios/python_basic_memory_3.11/Dockerfile

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+ARG BASE_IMAGE="prof-python-3.11"
+FROM $BASE_IMAGE
+
+# Copy the Python target into the container
+COPY ./scenarios/python_basic_memory_3.11/requirements.txt /app/requirements.txt
+RUN chmod 644 /app/*
+
+RUN pip install -r /app/requirements.txt
+
+COPY ./scenarios/python_basic_memory_3.11/main.py /app/main.py
+
+# Set the working directory to the location of the program
+WORKDIR /app
+
+ENV EXECUTION_TIME_SEC="3"
+ENV DD_TRACE_DEBUG=false
+
+# Run the program when the container starts
+CMD python main.py
+# CMD ddprof -l notice --preset cpu_live_heap python main.py

scenarios/python_basic_memory_3.11/expected_profile.json

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+{
+  "test_name": "python_memory_basic",
+  "pprof-regex": "",
+  "stacks": [
+    {
+      "profile-type": "alloc-samples",
+      "pprof-regex": "",
+      "stack-content": [
+        {
+          "regular_expression": "^\u003cmodule\u003e;run;allocate_memory$",
+          "percent": 40,
+          "error_margin": 5,
+          "labels": [
+            {
+              "key": "thread name",
+              "values": [
+                "MainThread"
+              ],
+              "values_regex": ""
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "profile-type": "alloc-samples",
+      "pprof-regex": "",
+      "stack-content": [
+        {
+          "regular_expression": "^\u003cmodule\u003e;run;allocate_memory_2$",
+          "percent": 60,
+          "error_margin": 5,
+          "labels": [
+            {
+              "key": "thread name",
+              "values": [
+                "MainThread"
+              ],
+              "values_regex": ""
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "scale_by_duration": false
+}

scenarios/python_basic_memory_3.11/main.py

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+import os
+import time
+
+from ddtrace.profiling import Profiler
+
+
+class Target:
+    def __init__(self) -> None:
+        self.memory: list[bytearray] = []
+
+    def run(self, n: int) -> None:
+        end_time = time.monotonic() + n
+        while time.monotonic() < end_time:
+            self.allocate_memory(1024)
+            self.allocate_memory_2(1024)
+
+    def allocate_memory(self, size: int) -> None:
+        self.memory.append(bytearray(size))
+
+    def allocate_memory_2(self, size: int) -> None:
+        self.memory.append(bytearray(3 * size))
+
+
+if __name__ == "__main__":
+    # Simple application that creates two threads with different durations:
+    # - MainThread runs target() for 2 seconds
+    # - Worker Thread-1 runs target() for 1 second
+    # The profiler should capture both threads with their respective durations.
+    prof = Profiler()
+    prof.start()  # Should be as early as possible, eg before other imports, to ensure everything is profiled
+
+    EXECUTION_TIME_SEC = int(os.environ.get("EXECUTION_TIME_SEC", "2"))
+
+    Target().run(EXECUTION_TIME_SEC)
+
+    prof.stop()

scenarios/python_basic_memory_3.11/requirements.txt

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+ddtrace==4.0.0