fix: event with invalid timestamp in trace log (electron#31349)

When node is started within Electron's environment it doesn't
initialize v8 and time of v8's start is never set. As a result
we log v8's start time as 0 and it breaks timestamps in the
trace log. With this change we log v8's start time only when
it was initialized by node.

Author: CezaryKulakowski

patches/node/.patches

@@ -23,3 +23,4 @@ add_should_read_node_options_from_env_option_to_disable_node_options.patch
 repl_fix_crash_when_sharedarraybuffer_disabled.patch
 fix_readbarrier_undefined_symbol_error_on_woa_arm64.patch
 chore_fix_-wimplicit-fallthrough.patch
+fix_event_with_invalid_timestamp_in_trace_log.patch

patches/node/fix_event_with_invalid_timestamp_in_trace_log.patch

@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Cezary Kulakowski <[email protected]>
+Date: Fri, 8 Oct 2021 11:18:58 +0200
+Subject: fix: event with invalid timestamp in trace log
+
+When node is started within Electron's environment it doesn't
+initialize v8 and time of v8's start is never set. As a result
+we log v8's start time as 0 and it breaks timestamps in the
+trace log. With this change we log v8's start time only when
+it was initialized by node.
+
+diff --git a/src/env.cc b/src/env.cc
+index 16af6aec3791df1363682f1ed024c52208b9a8f6..ada0faa93bc223ffbea79a4308796df73ea8ae4e 100644
+--- a/src/env.cc
++++ b/src/env.cc
+@@ -461,8 +461,10 @@ void Environment::InitializeMainContext(Local<Context> context,
+                            environment_start_time_);
+   performance_state_->Mark(performance::NODE_PERFORMANCE_MILESTONE_NODE_START,
+                            per_process::node_start_time);
+-  performance_state_->Mark(performance::NODE_PERFORMANCE_MILESTONE_V8_START,
+-                           performance::performance_v8_start);
++  if (per_process::v8_initialized) {
++    performance_state_->Mark(performance::NODE_PERFORMANCE_MILESTONE_V8_START,
++                             performance::performance_v8_start);
++  }
+ }
+ 
+ Environment::~Environment() {