[PATCH v3 2/6] scripts: python: Extact necessary information from process event

[Anup Sharma <anupnewsmail@gmail.com>]

The script takes in a sample event dictionary(param_dict) and retrieves
relevant data such as time stamp, PID, TID, thread name. Also start time
is defined.

Signed-off-by: Anup Sharma <anupnewsmail@gmail.com>
---
 .../perf/scripts/python/firefox-gecko-converter.py  | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/tools/perf/scripts/python/firefox-gecko-converter.py b/tools/perf/scripts/python/firefox-gecko-converter.py
index 5b342641925c..765f1775cee5 100644
--- a/tools/perf/scripts/python/firefox-gecko-converter.py
+++ b/tools/perf/scripts/python/firefox-gecko-converter.py
@@ -21,8 +21,19 @@ sys.path.append(os.environ['PERF_EXEC_PATH'] + \
 from perf_trace_context import *
 from Core import *
 
+start_time = None
+
 def trace_end():
 	pass
 
 def process_event(param_dict):
-	pass
+	global start_time
+	# Extract relevant information from the event parameters. The event parameters
+	# are in a dictionary:
+	time_stamp = (param_dict['sample']['time'] // 1000) / 1000
+	pid = param_dict['sample']['pid']
+	tid = param_dict['sample']['tid']
+	thread_name = param_dict['comm']
+
+	# Assume that start time is the time of the first event.
+	start_time = time_stamp if not start_time else start_time
-- 
2.34.1