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#!/usr/bin/python
# Copyright 2018 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.
# This script analyzes link map file generated by Xcode. It calculates and
# prints out the sizes of each dependent library and the total sizes of the
# symbols.
# The script takes one parameter, which is the path to the link map file.
import sys
import re
def parse_link_map(filename):
table_tag = {}
state = "start"
table_stats_symbol = {}
table_stats_dead = {}
section_total_size = 0
symbol_total_size = 0
boringssl_size = 0
core_size = 0
objc_size = 0
protobuf_size = 0
lines = list(open(filename))
for line in lines:
line_stripped = line[:-1]
if "# Object files:" == line_stripped:
state = "object"
continue
elif "# Sections:" == line_stripped:
state = "section"
continue
elif "# Symbols:" == line_stripped:
state = "symbol"
continue
elif "# Dead Stripped Symbols:" == line_stripped:
state = "dead"
continue
if state == "object":
segs = re.search('(\[ *[0-9]*\]) (.*)', line_stripped)
table_tag[segs.group(1)] = segs.group(2)
if state == "section":
if len(line_stripped) == 0 or line_stripped[0] == '#':
continue
segs = re.search('^(.+?)\s+(.+?)\s+.*', line_stripped)
section_total_size += int(segs.group(2), 16)
if state == "symbol":
if len(line_stripped) == 0 or line_stripped[0] == '#':
continue
segs = re.search('^.+?\s+(.+?)\s+(\[.+?\]).*', line_stripped)
target = table_tag[segs.group(2)]
target_stripped = re.search('^(.*?)(\(.+?\))?$', target).group(1)
size = int(segs.group(1), 16)
if not target_stripped in table_stats_symbol:
table_stats_symbol[target_stripped] = 0
table_stats_symbol[target_stripped] += size
if 'BoringSSL' in target_stripped:
boringssl_size += size
elif 'libgRPC-Core' in target_stripped:
core_size += size
elif 'libgRPC-RxLibrary' in target_stripped or \
'libgRPC' in target_stripped or \
'libgRPC-ProtoLibrary' in target_stripped:
objc_size += size
elif 'libProtobuf' in target_stripped:
protobuf_size += size
for target in table_stats_symbol:
symbol_total_size += table_stats_symbol[target]
return core_size, objc_size, boringssl_size, protobuf_size, symbol_total_size
def main():
filename = sys.argv[1]
core_size, objc_size, boringssl_size, protobuf_size, total_size = parse_link_map(
filename)
print('Core size:{:,}'.format(core_size))
print('ObjC size:{:,}'.format(objc_size))
print('BoringSSL size:{:,}'.format(boringssl_size))
print('Protobuf size:{:,}\n'.format(protobuf_size))
print('Total size:{:,}'.format(total_size))
if __name__ == "__main__":
main()
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