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| author | Joyee Cheung <joyeec9h3@gmail.com> | 2019-04-20 12:18:34 +0300 |
|---|---|---|
| committer | Joyee Cheung <joyeec9h3@gmail.com> | 2019-04-23 06:26:07 +0300 |
| commit | eb23b176d8c7122af6add5ee38f87044288d3d39 (patch) | |
| tree | 46a5aa800eb31a0510254ee03dcd35ee2bbcf220 /src/node_main_instance.cc | |
| parent | bf5dadeef07250763948765e9902edd2ecee5448 (diff) | |
src: enable context snapshot after running per-context scripts
At build time, snapshot the context after running per-context scripts
in the main instance, and in the final build, deserialize the
context in the main instance.
This provides a ~5% in the misc/startup benchmark when the instance
is launched within a process that runs test/fixtures/semicolon.js.
PR-URL: https://github.com/nodejs/node/pull/27321
Refs: https://github.com/nodejs/node/issues/17058
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Diffstat (limited to 'src/node_main_instance.cc')
| -rw-r--r-- | src/node_main_instance.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/node_main_instance.cc b/src/node_main_instance.cc index 419fd767720..212c6bf5f44 100644 --- a/src/node_main_instance.cc +++ b/src/node_main_instance.cc @@ -171,9 +171,13 @@ std::unique_ptr<Environment> NodeMainInstance::CreateMainEnvironment( isolate_->GetHeapProfiler()->StartTrackingHeapObjects(true); } - Local<Context> context = NewContext(isolate_); + Local<Context> context; if (deserialize_mode_) { + context = + Context::FromSnapshot(isolate_, kNodeContextIndex).ToLocalChecked(); SetIsolateUpForNode(isolate_, IsolateSettingCategories::kErrorHandlers); + } else { + context = NewContext(isolate_); } CHECK(!context.IsEmpty()); |