#!/bin/bash
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#
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# Copyright (C) 2017 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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WINSCOPE_URL='http://go/winscope/#sftrace'
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set -e
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outfile=layerstrace.pb
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help=
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for arg in "$@"; do
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case $arg in
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-h|--help) help=1;;
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--);;
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-*) echo "Unknown option: $arg"; help=1;;
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*) outfile="$arg";;
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esac
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done
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if [ "$help" != "" ]; then
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echo "usage: $0 [-h | --help] [OUTFILE]"
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echo
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echo "Traces SurfaceFlinger and writes the output to OUTFILE (default ./layerstrace.pb)."
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echo "To view the traces, use $WINSCOPE_URL."
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echo
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echo "WARNING: This calls adb root and deactivates SELinux."
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exit 1
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fi
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function log_error() {
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echo "FAILED"
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}
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trap log_error ERR
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outfile_abs="$(cd "$(dirname "$outfile")"; pwd)/$(basename "$outfile")"
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function start_tracing() {
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echo -n "Starting SurfaceFlinger trace..."
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adb shell su root service call SurfaceFlinger 1025 i32 1 >/dev/null
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echo "DONE"
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trap stop_tracing EXIT
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}
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function stop_tracing() {
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echo -n "Stopping SurfaceFlinger trace..."
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adb shell su root service call SurfaceFlinger 1025 i32 0 >/dev/null
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echo "DONE"
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trap - EXIT
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}
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which adb >/dev/null 2>/dev/null || { echo "ERROR: ADB not found."; exit 1; }
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adb get-state 2>/dev/null | grep -q device || { echo "ERROR: No device connected or device is unauthorized."; exit 1; }
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echo -n "Deactivating SELinux..."
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adb shell su root setenforce 0 2>/dev/null >/dev/null
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echo "DONE"
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start_tracing
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read -p "Press ENTER to stop tracing" -s x
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echo
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stop_tracing
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adb exec-out su root cat /data/misc/wmtrace/layers_trace.pb >"$outfile"
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echo
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echo "To view the trace, go to $WINSCOPE_URL, click 'OPEN SF TRACE' and open"
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echo "${outfile_abs}"
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