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 handling of the mm_id field in the rss_stat 17# event when mm_structs are reused on process death. 18 19from os import sys, path 20 21import synth_common 22 23trace = synth_common.create_trace() 24 25trace.add_packet(ts=1) 26trace.add_process(10, 1, "parent_process") 27trace.add_process(11, 1, "other_process") 28 29trace.add_ftrace_packet(1) 30 31# Emit an event on an irrelevant thread. 32trace.add_rss_stat(90, tid=11, member=0, size=20, mm_id=0x5678, curr=1) 33 34# Emit an event for the process. 35trace.add_rss_stat(100, tid=10, member=0, size=100, mm_id=0x1234, curr=1) 36 37# Now kill the process. 38trace.add_process_free(ts=101, tid=10, comm="parent_process", prio=0) 39 40# Emit an event on another thread which reuses the struct after free. 41trace.add_rss_stat(103, tid=11, member=0, size=10, mm_id=0x1234, curr=0) 42 43sys.stdout.buffer.write(trace.trace.SerializeToString()) 44