Implement process.memoryUsage() and process.cpuUsage() (#3586)

* Implement process.memoryUsage() and process.cpuUsage()

* Avoid mi_process_info

* Update bench

* Update Process.cpp

* fixup

* More tests + linux fixup

* Skip it for now since it seems less accurate

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/bench/snippets/process-info.mjs b/bench/snippets/process-info.mjs
new file mode 100644
index 000000000..0366472e5
--- /dev/null
+++ b/bench/snippets/process-info.mjs
@@ -0,0 +1,33 @@
+import { bench, run } from "./runner.mjs";
+import { performance } from "perf_hooks";
+
+bench("process.memoryUsage()", () => {
+  process.memoryUsage();
+});
+
+bench("process.memoryUsage.rss()", () => {
+  process.memoryUsage.rss();
+});
+
+bench("process.cpuUsage()", () => {
+  process.cpuUsage();
+});
+
+const init = process.cpuUsage();
+bench("process.cpuUsage(delta)", () => {
+  process.cpuUsage(init);
+});
+
+bench("performance.now()", () => {
+  performance.now();
+});
+
+bench("process.hrtime()", () => {
+  process.hrtime();
+});
+
+bench("process.hrtime.bigint()", () => {
+  process.hrtime.bigint();
+});
+
+await run();