1 #!/usr/bin/env python 2 # 3 # Copyright 2015 the V8 project authors. All rights reserved. 4 # Use of this source code is governed by a BSD-style license that can be 5 # found in the LICENSE file. 6 7 # 8 # This is an utility for generating csv files based on GC traces produced by 9 # V8 when run with flags --trace-gc --trace-gc-nvp. 10 # 11 # Usage: gc-nvp-to-csv.py <GC-trace-filename> 12 # 13 14 import sys 15 import gc_nvp_common 16 17 def process_trace(filename): 18 trace = gc_nvp_common.parse_gc_trace(filename) 19 if len(trace): 20 keys = trace[0].keys() 21 print ', '.join(keys) 22 for entry in trace: 23 print ', '.join(map(lambda key: str(entry[key]), keys)) 24 25 26 if len(sys.argv) != 2: 27 print "Usage: %s <GC-trace-filename>" % sys.argv[0] 28 sys.exit(1) 29 30 process_trace(sys.argv[1]) 31
