| #!/bin/dash |
| # Copyright 2009-2010 The ChromiumOS Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # dev-mode functionality for crosh |
| |
| # shellcheck disable=SC2034 |
| USAGE_systrace='[<start | stop | status>]' |
| # shellcheck disable=SC2034 |
| HELP_systrace=' |
| Start/stop system tracing. Turning tracing off will generate a trace |
| log file in the Downloads directory with all the events collected |
| since the last time tracing was enabled. One can control the events |
| collected by specifying categories after "start"; e.g. "start gfx" |
| will collect only graphics-related system events. "systrace status" |
| (or just "systrace") will display the current state of tracing, including |
| the set of events being traced. |
| ' |
| cmd_systrace() ( |
| case x"$1" in |
| xstart) |
| local categories; |
| shift; categories="$*" |
| if [ -z "${categories}" ]; then |
| categories="all" |
| fi |
| debugd SystraceStart "string:${categories}" |
| ;; |
| xstop) |
| local downloads_dir="/home/${USER}/user/MyFiles/Downloads" |
| local data_file |
| if ! data_file="$(mktemp "${downloads_dir}/systrace.XXXXXX")"; then |
| echo "Cannot create data file ${data_file}" |
| return 1 |
| fi |
| debugd SystraceStop "fd:1" > "${data_file}" |
| echo "Trace data saved to ${data_file}" |
| # add symlink to the latest capture file |
| ln -sf "$(basename "${data_file}")" "${downloads_dir}/systrace.latest" |
| ;; |
| xstatus|x) |
| debugd SystraceStatus |
| ;; |
| esac |
| ) |
