From d0535cf10b6e4205579154754905ba33a0551597 Mon Sep 17 00:00:00 2001
From: KernelDeimos <eric.alex.dube@gmail.com>
Date: Wed, 25 Sep 2024 21:45:03 -0400
Subject: [PATCH] dev: add wasm bench

---
 src/emulator/benchmark/bench.wasm | Bin 0 -> 60 bytes
 src/emulator/benchmark/bench.wat  |  10 ++++++++++
 src/emulator/package.json         |   3 ++-
 src/emulator/src/main.js          |  26 ++++++++++++++++++++++++++
 src/emulator/webpack.config.js    |   6 ++++++
 5 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 src/emulator/benchmark/bench.wasm
 create mode 100644 src/emulator/benchmark/bench.wat

diff --git a/src/emulator/benchmark/bench.wasm b/src/emulator/benchmark/bench.wasm
new file mode 100644
index 0000000000000000000000000000000000000000..f9fb504a04589ba8aba67db69edbb52cc3e868cf
GIT binary patch
literal 60
zcmZQbEY4+QU|?WmVN76PU}j=uVCQAzOiIm5&d5zH%4T5Tl4KNTWUOa)P+)Lm%u-|k
OQWMTGxbZS@a{~Yo(+P|K

literal 0
HcmV?d00001

diff --git a/src/emulator/benchmark/bench.wat b/src/emulator/benchmark/bench.wat
new file mode 100644
index 00000000..9148976c
--- /dev/null
+++ b/src/emulator/benchmark/bench.wat
@@ -0,0 +1,10 @@
+(module
+  (func $benchmark (export "benchmark")
+    (local $i i32)
+    (loop $loop
+      (local.set $i (i32.add (local.get $i) (i32.const 1)))
+      (i32.eq (local.get $i) (i32.const 10000))
+      br_if $loop
+    )
+  )
+)
diff --git a/src/emulator/package.json b/src/emulator/package.json
index 864649da..250c9763 100644
--- a/src/emulator/package.json
+++ b/src/emulator/package.json
@@ -14,6 +14,7 @@
     "html-webpack-plugin": "^5.6.0"
   },
   "dependencies": {
-    "brotli-dec-wasm": "^2.3.0"
+    "brotli-dec-wasm": "^2.3.0",
+    "copy-webpack-plugin": "^12.0.2"
   }
 }
diff --git a/src/emulator/src/main.js b/src/emulator/src/main.js
index 930eb00b..bbdbd86a 100644
--- a/src/emulator/src/main.js
+++ b/src/emulator/src/main.js
@@ -114,8 +114,34 @@ puter.ui.on('connection', event => {
     conn.on('message', pty_on_first_message);
 });
 
+const bench = async ({ modules }) => {
+    const { benchmark } = modules.bench;
+    const ts_start = performance.now();
+    benchmark();
+    const ts_end = performance.now();
+    // console.log('benchmark took', ts_end - ts_start);
+    return ts_end - ts_start;
+}
+
+const bench_20ms = async (ctx) => {
+    let ts = 0, count = 0;
+    for (;;) {
+        ts += await bench(ctx);
+        count++;
+        if ( ts > 20 ) {
+            return count;
+        }
+    }
+}
+
 window.onload = async function()
 {
+    const modules = {};
+    modules.bench = (await WebAssembly.instantiateStreaming(
+        fetch('./static/bench.wasm'))).instance.exports;
+
+    const res = await bench_20ms({ modules });
+    console.log('result', res);
     let emu_config; try {
         emu_config = await puter.fs.read('config.json');
     } catch (e) {}
diff --git a/src/emulator/webpack.config.js b/src/emulator/webpack.config.js
index 6dee8961..feeb4b63 100644
--- a/src/emulator/webpack.config.js
+++ b/src/emulator/webpack.config.js
@@ -1,5 +1,6 @@
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const DefinePlugin = require('webpack').DefinePlugin;
+const CopyPlugin = require('copy-webpack-plugin');
 
 module.exports = {
     entry: [
@@ -12,5 +13,10 @@ module.exports = {
         new DefinePlugin({
             MODE: JSON.stringify(process.env.MODE ?? 'dev')
         }),
+        new CopyPlugin({
+            patterns: [
+                { from: 'benchmark', to: 'static' }
+            ]
+        })
     ]
 };