| #!/usr/bin/python |
| # Copyright (C) 2019 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # This synthetic trace tests handling of the mm_id field in the rss_stat |
| # event. |
| |
| from os import sys, path |
| |
| sys.path.append(path.dirname(path.dirname(path.abspath(__file__)))) |
| import synth_common |
| |
| trace = synth_common.create_trace() |
| |
| trace.add_process_tree_packet(ts=1) |
| trace.add_process(10, 0, "process") |
| |
| trace.add_ftrace_packet(0) |
| |
| # Create a new child process (treated internally as a thread) of kthreadd. |
| trace.add_newtask(ts=50, tid=2, new_tid=3, new_comm="kthread_child", flags=0) |
| |
| # Add an event on tid 3 which affects its own rss. |
| trace.add_rss_stat(ts=90, tid=3, member=0, size=9, mm_id=4321, curr=True) |
| |
| # Try to add an event for tid 10. However, as we've not seen an event |
| # with curr == True for tid == 10, this event will be dropped. |
| trace.add_rss_stat(ts=91, tid=3, member=0, size=900, mm_id=1234, curr=False) |
| |
| # Add an event for tid 3 from tid 10. This emulates e.g. direct reclaim |
| # where a process reaches into another process' mm struct. |
| trace.add_rss_stat(ts=99, tid=10, member=0, size=10, mm_id=4321, curr=False) |
| |
| # Add an event on tid 10 which affects its own rss. |
| trace.add_rss_stat(ts=100, tid=10, member=0, size=1000, mm_id=1234, curr=True) |
| |
| # Add an event on tid 10 from tid 3. This emlates e.g. background reclaim |
| # where kthreadd is cleaning up the mm struct of another process. |
| trace.add_rss_stat(ts=101, tid=3, member=0, size=900, mm_id=1234, curr=False) |
| |
| print(trace.trace.SerializeToString()) |