Add the ability to send SIGPROF to an edx-platform process to obtain a memory dump

openedx/core/operations.py

@@ -0,0 +1,17 @@
+import os
+import signal
+import tempfile
+
+from datetime import datetime
+from meliae import scanner
+
+
+def dump_memory(signum, frame):
+    """Dump memory stats for the current process to a temp directory. Uses the meliae output format."""
+    scanner.dump_all_objects('{}/meliae.{}.{}.dump'.format(tempfile.gettempdir(), datetime.now().isoformat(), os.getpid()))
+
+def install_memory_dumper(dump_signal=signal.SIGPROF):
+    """
+    Install a signal handler on `signal` to dump memory stats for the current process.
+    """
+    signal.signal(dump_signal, dump_memory)