1 # Copyright 2016 the V8 project authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import os 6 import sys 7 import json 8 import re 9 import argparse 10 11 sys.path.append(os.environ['PERF_EXEC_PATH'] + \ 12 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') 13 14 from perf_trace_context import * 15 from Core import * 16 17 def trace_begin(): 18 json_obj['eventCounts'] = {} 19 prog = re.compile(r'0x[0-9a-fA-F]+') 20 for phase in reversed(json_obj['phases']): 21 if phase['name'] == "disassembly": 22 for line in phase['data'].splitlines(): 23 result = re.match(prog, line) 24 if result: 25 known_addrs.add(result.group(0)) 26 27 def trace_end(): 28 print json.dumps(json_obj) 29 30 def process_event(param_dict): 31 addr = "0x%x" % int(param_dict['sample']['ip']) 32 33 # Only count samples that belong to the function 34 if addr not in known_addrs: 35 return 36 37 ev_name = param_dict['ev_name'] 38 if ev_name not in json_obj['eventCounts']: 39 json_obj['eventCounts'][ev_name] = {} 40 if addr not in json_obj['eventCounts'][ev_name]: 41 json_obj['eventCounts'][ev_name][addr] = 0 42 json_obj['eventCounts'][ev_name][addr] += 1 43 44 if __name__ == "__main__": 45 parser = argparse.ArgumentParser( 46 description="Perf script to merge profiling data with turbofan compiler " 47 "traces.") 48 parser.add_argument("file_name", metavar="JSON File", 49 help="turbo trace json file.") 50 51 args = parser.parse_args() 52 53 with open(args.file_name, 'r') as json_file: 54 json_obj = json.load(json_file) 55 56 known_addrs = set() 57
