ChildProcess.prototype.spawn() handed a single options object to the
ProcessWrap::Spawn() binding, which then read about a dozen properties
back out individually with Object::Get(). Each of those is a property
lookup across the JS/C++ boundary on every spawn.
Pass file, args, cwd, envPairs, stdio, uid and gid as positional
arguments and pack the boolean flags (detached, windowsHide,
windowsVerbatimArguments) into a single integer whose bit values are
exported from the binding as `constants`. The native side then reads
each value directly from the call arguments.
Add internal typings for the process_wrap binding (previously untyped)
describing the new positional spawn() signature and the exported
constants.
There is no observable behavior change. Spawn wall-clock time is
dominated by the operating system process-creation cost and is
unchanged; this reduces the per-spawn work done on the main thread and
clarifies the contract between the JS and C++ layers.
Signed-off-by: Yagiz Nizipli <yagiz@nizipli.com>
PR-URL: https://github.com/nodejs/node/pull/63930
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Daniel Lemire <daniel@lemire.me>
2ab9848fe4