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 21 22import synth_common 23 24trace = synth_common.create_trace() 25 26trace.add_packet(ts=1) 27trace.add_process(10, 1, "parent_process") 28trace.add_process(11, 1, "other_process") 29 30trace.add_ftrace_packet(1) 31 32# Emit an event on an irrelevant thread. 33trace.add_rss_stat(90, tid=11, member=0, size=20, mm_id=0x5678, curr=1) 34 35# Emit an event for the process. 36trace.add_rss_stat(100, tid=10, member=0, size=100, mm_id=0x1234, curr=1) 37 38# Now kill the process. 39trace.add_process_free(ts=101, tid=10, comm="parent_process", prio=0) 40 41# Emit an event on another thread which reuses the struct after free. 42trace.add_rss_stat(103, tid=11, member=0, size=10, mm_id=0x1234, curr=0) 43 44sys.stdout.buffer.write(trace.trace.SerializeToString()) 45