src: allow per-Environment set of env vars

Abstract the `process.env` backing mechanism in C++ to allow
different kinds of backing stores for `process.env` for different
Environments.

PR-URL: https://github.com/nodejs/node/pull/26544
Fixes: https://github.com/nodejs/node/issues/24947
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/env-inl.h b/src/env-inl.h
index 69c70804c8..3eedbb857b 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -447,6 +447,14 @@ inline uint64_t Environment::timer_base() const {
   return timer_base_;
 }
 
+inline std::shared_ptr<KVStore> Environment::envvars() {
+  return envvars_;
+}
+
+inline void Environment::set_envvars(std::shared_ptr<KVStore> envvars) {
+  envvars_ = envvars;
+}
+
 inline bool Environment::printed_error() const {
   return printed_error_;
 }