1 files changed, 45 insertions, 0 deletions
diff --git a/test/trace_processor/rss_stat_after_free.py b/test/trace_processor/rss_stat_after_free.py
new file mode 100644
index 000000000..d7ac469d9
--- /dev/null
+++ b/test/trace_processor/rss_stat_after_free.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python
+#!/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 when mm_structs are reused on process death.
+
+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, 1, "parent_process")
+trace.add_process(11, 1, "other_process")
+
+trace.add_ftrace_packet(1)
+
+# Emit an event on an irrelevant thread.
+trace.add_rss_stat(90, tid=11, member=0, size=20, mm_id=0x5678, curr=1)
+
+# Emit an event for the process.
+trace.add_rss_stat(100, tid=10, member=0, size=100, mm_id=0x1234, curr=1)
+
+# Now kill the process.
+trace.add_process_free(ts=101, tid=10, comm="parent_process", prio=0)
+
+# Emit an event on another thread which reuses the struct after free.
+trace.add_rss_stat(103, tid=11, member=0, size=10, mm_id=0x1234, curr=0)
+
+print(trace.trace.SerializeToString())