1#!/usr/bin/env python3 2# Copyright (C) 2019 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16# This synthetic trace tests a short lived process which is forked, performs 17# a rename (to simulate an exec) then dies before the /proc scraper finds the 18# real process name 19 20from os import sys, path 21 22from synth_common import CLONE_THREAD 23import synth_common 24 25trace = synth_common.create_trace() 26 27# Create a parent process which will be forked below. 28trace.add_packet(ts=1) 29trace.add_process(10, 0, "parent") 30 31# Fork off the new process and then kill it 5ns later. 32trace.add_ftrace_packet(0) 33trace.add_newtask(ts=15, tid=10, new_tid=11, new_comm='child', flags=0) 34trace.add_sched(ts=16, prev_pid=10, next_pid=11, next_comm='child') 35trace.add_rename( 36 ts=17, tid=11, old_comm='child', new_comm='true_name', oom_score_adj=1000) 37 38sys.stdout.buffer.write(trace.trace.SerializeToString()) 39