one more rewrite of semaphore

coroutines/benchmark/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+    id "org.jetbrains.kotlin.jvm"
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api project(":micro_utils.coroutines")
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}

coroutines/benchmark/src/main/kotlin/main.kt

@@ -0,0 +1,56 @@
+import dev.inmo.micro_utils.coroutines.SmartSemaphore
+import dev.inmo.micro_utils.coroutines.withAcquire
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.CoroutineStart
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.joinAll
+import kotlinx.coroutines.launch
+import java.io.File
+import kotlin.math.tanh
+import kotlin.system.measureNanoTime
+
+data class Record(
+    val permits: Int,
+    val i: Int,
+    val timeNanos: Long
+)
+
+private const val permitsCount = 1000
+private val acquiresCount = 10000
+
+suspend fun main(args: Array<String>) {
+    val outputFilePath = args.firstOrNull() ?: "local.bench.txt"
+
+    val records = ArrayList<Record>(permitsCount * acquiresCount)
+    val jobs = ArrayList<Job>()
+    val scope = CoroutineScope(Dispatchers.Default)
+    for (permits in 1 .. permitsCount) {
+        val semaphore = SmartSemaphore.Mutable(permits)
+        for (i in 0 until acquiresCount) {
+            jobs.add(
+                scope.launch(start = CoroutineStart.LAZY) {
+                    val timeNanos = measureNanoTime {
+                        semaphore.withAcquire {
+                            tanh(57.179)
+                        }
+                    }
+                    records.add(Record(permits, i, timeNanos))
+                }
+            )
+        }
+    }
+    jobs.joinAll()
+    val file = File(outputFilePath)
+    file.writeText("")
+    val text = buildString {
+        records.groupBy { it.permits }.forEach {
+            it.value.sortedBy { it.i }.forEach {
+                append("${it.permits} ${it.i} ${it.timeNanos}\n")
+            }
+        }
+    }
+    file.appendText(text)
+    file.appendText("\n")
+    println(text)
+}