Initial implementation of bloat_diff

1 files changed, 98 insertions, 0 deletions

diff --git a/tools/profiling/bloat/bloat_diff.py b/tools/profiling/bloat/bloat_diff.py
new file mode 100755
index 0000000000..b9212f1cb9
--- /dev/null
+++ b/tools/profiling/bloat/bloat_diff.py
@@ -0,0 +1,98 @@
+#!/usr/bin/env python2.7
+#
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import glob
+import multiprocessing
+import os
+import shutil
+import subprocess
+import sys
+
+sys.path.append(
+  os.path.join(
+    os.path.dirname(sys.argv[0]), '..', '..', 'run_tests', 'python_utils'))
+import comment_on_pr
+
+argp = argparse.ArgumentParser(
+    description='Perform diff on microbenchmarks')
+
+argp.add_argument(
+    '-d',
+    '--diff_base',
+    type=str,
+    help='Commit or branch to compare the current one to')
+
+argp.add_argument(
+    '-j',
+    '--jobs',
+    type=int,
+    default=multiprocessing.cpu_count())
+
+args = argp.parse_args()
+
+LIBS = [
+  'libgrpc.so',
+  'libgrpc++.so',
+]
+
+def build(where):
+  subprocess.check_call('make -j%d' % args.jobs,
+                        shell=True, cwd='.')
+  shutil.rmtree('bloat_diff_%s' % where, ignore_errors=True)
+  os.rename('libs', 'bloat_diff_%s' % where)
+
+build('new')
+
+if args.diff_base:
+    old = 'old'
+    where_am_i = subprocess.check_output(
+      ['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip()
+    subprocess.check_call(['git', 'checkout', args.diff_base])
+    subprocess.check_call(['git', 'submodule', 'update'])
+    try:
+      try:
+        build('old')
+      except subprocess.CalledProcessError, e:
+        subprocess.check_call(['make', 'clean'])
+        build('old')
+    finally:
+      subprocess.check_call(['git', 'checkout', where_am_i])
+      subprocess.check_call(['git', 'submodule', 'update'])
+
+subprocess.check_call('make -j%d' % args.jobs,
+                      shell=True, cwd='third_party/bloaty')
+
+text = ''
+for lib in LIBS:
+  text += '****************************************************************\n\n'
+  text += lib + '\n\n'
+  old_version = glob.glob('bloat_diff_old/opt/%s' % lib)
+  new_version = glob.glob('bloat_diff_new/opt/%s' % lib)
+  assert len(new_version) == 1
+  if old_version:
+    assert len(old_version) == 1
+    text += subprocess.check_output('third_party/bloaty/bloaty %s -- %s' %
+                                    (new_version[0], old_version[0]),
+                                    shell=True)
+  else:
+    text += subprocess.check_output('third_party/bloaty/bloaty %s' %
+                                    (new_version[0]),
+                                    shell=True)
+  text += '\n\n'
+
+print text
+comment_on_pr.comment_on_pr('```\n%s\n```' % text)