Busy wait with a sleep inside.

[benchmarks-js.git] / busy-wait.js

diff --git a/busy-wait.js b/busy-wait.js
index ed06c52a682ab408449f273e1fe03333917ac0bc..d49a5fde51981ba870ab4de30397d5e61066592c 100644 (file)
--- a/busy-wait.js
+++ b/busy-wait.js
@@ -1,36 +1,58 @@
 const Benchmark = require('benchmark')
-const { LIST_FORMATTER } = require('./benchmark-utils')
+const { LIST_FORMATTER, sleep } = require('./benchmark-utils')
 
 const suite = new Benchmark.Suite()
 
 const timeout = 2000
+const interval = 1000
 
 /**
  * @param timeoutMs
  */
-function dummyTimeoutBusyWait (timeoutMs) {
-  const timeoutDateMs = Date.now() + timeoutMs
-  do {} while (Date.now() < timeoutDateMs)
+async function sleepTimeoutBusyWait (timeoutMs) {
+  const timeoutTimestampMs = Date.now() + timeoutMs
+  do {
+    await sleep(interval)
+  } while (Date.now() < timeoutTimestampMs)
 }
 
 /**
  * @param timeoutMs
- * @param delayMs
+ * @param intervalMs
  */
-function setIntervalTimeoutBusyWait (timeoutMs, delayMs = 200) {
-  const tries = Math.round(timeoutMs / delayMs)
+async function divideAndConquerTimeoutBusyWait (
+  timeoutMs,
+  intervalMs = interval
+) {
+  const tries = Math.round(timeoutMs / intervalMs)
+  let count = 0
+  do {
+    count++
+    await sleep(intervalMs)
+  } while (count <= tries)
+}
+
+/**
+ * @param timeoutMs
+ * @param intervalMs
+ */
+function setIntervalTimeoutBusyWait (timeoutMs, intervalMs = interval) {
+  const tries = Math.round(timeoutMs / intervalMs)
   let count = 0
   const triesSetInterval = setInterval(() => {
     count++
     if (count === tries) {
       clearInterval(triesSetInterval)
     }
-  }, delayMs)
+  }, intervalMs)
 }
 
 suite
-  .add('dummyTimeoutBusyWait', function () {
-    dummyTimeoutBusyWait(timeout)
+  .add('sleepTimeoutBusyWait', async function () {
+    sleepTimeoutBusyWait(timeout)
+  })
+  .add('divideAndConquerTimeoutBusyWait', async function () {
+    await divideAndConquerTimeoutBusyWait(timeout)
   })
   .add('setIntervalTimeoutBusyWait', function () {
     setIntervalTimeoutBusyWait(timeout)