Add --trace_memory to bootstrap.

diff --git a/bootstrap.py b/bootstrap.py
index 1b4d4843332effc7683bcbd20a7f9a1432cc299e..e50cb386543aaef66fdd36cb9c149fbf009ef5ae 100644 (file)
--- a/bootstrap.py
+++ b/bootstrap.py
@@ -57,6 +57,12 @@ args.add_argument(
     default=False,
     help='Should we run cProfile on this code?',
 )
+args.add_argument(
+    '--trace_memory',
+    action=ActionNoYes,
+    default=False,
+    help='Should we record/report on memory utilization?',
+)
 
 original_hook = sys.excepthook
 
@@ -221,11 +227,25 @@ def initialize(entry_point):
         else:
             config.parse(None)
 
+        if config.config['trace_memory']:
+            import tracemalloc
+
+            tracemalloc.start()
+
         # Initialize logging... and log some remembered messages from
         # config module.
         logging_utils.initialize_logging(logging.getLogger())
         config.late_logging()
 
+        # Maybe log some info about the python interpreter itself.
+        logger.debug(
+            f'Platform: {sys.platform}, maxint=0x{sys.maxsize:x}, byteorder={sys.byteorder}'
+        )
+        logger.debug(f'Python interpreter version: {sys.version}')
+        logger.debug(f'Python implementation: {sys.implementation}')
+        logger.debug(f'Python C API version: {sys.api_version}')
+        logger.debug(f'Python path: {sys.path}')
+
         # Allow programs that don't bother to override the random seed
         # to be replayed via the commandline.
         import random
@@ -265,6 +285,14 @@ def initialize(entry_point):
 
         logger.debug(f'{entry_point.__name__} (program entry point) returned {ret}.')
 
+        if config.config['trace_memory']:
+            snapshot = tracemalloc.take_snapshot()
+            top_stats = snapshot.statistics('lineno')
+            print()
+            print("--trace_memory's top 10 memory using files:")
+            for stat in top_stats[:10]:
+                print(stat)
+
         if config.config['dump_all_objects']:
             dump_all_objects()