From a453e53a14415da990f299d108ebe47c74586603 Mon Sep 17 00:00:00 2001
From: Andrew Golovashevich <landgrafhomyak@gmail.com>
Date: Sun, 7 Sep 2025 01:20:01 +0300
Subject: [PATCH] Task interface

---
 .../multitasking_0/SingleThreadEventLoop.kt   | 24 +++++++++++++++++++
 .../ru/landgrafhomyak/multitasking_0/Task.kt  | 20 ++++++++++++++++
 .../multitasking_0/TaskKernel.kt              |  5 ++++
 3 files changed, 49 insertions(+)
 create mode 100644 src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/Task.kt
 create mode 100644 src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/TaskKernel.kt

diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/SingleThreadEventLoop.kt b/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/SingleThreadEventLoop.kt
index 90149b1..623d789 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/SingleThreadEventLoop.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/SingleThreadEventLoop.kt
@@ -1,6 +1,30 @@
 package ru.landgrafhomyak.multitasking_0
 
 public interface SingleThreadEventLoop {
+	/**
+	 * Returns thread on which this event loop runs.
+	 * Threadsafe getter.
+	 */
+	public val thread: Thread
+
+	/**
+	 * Returns `true` if event loop running now.
+	 * Threadsafe getter.
+	 *
+	 * Value `false` means that [runUntilSuspended()][SingleThreadEventLoop.runUntilSuspended] can be called.
+	 */
+	public val isRunning: Boolean
+
+	/**
+	 * Adds [task][kernel] to scheduler's queue.
+	 * Returns immediately. Threadsafe.
+	 */
+	public fun addTask(kernel: TaskKernel): Task
+
+	/**
+	 * Schedules [continuation.resumeWithSuccess(Unit)][Continuation.resumeWithSuccess] to be called after [delayMillis] milliseconds.
+	 * Threadsafe.
+	 */
 	public fun callAfter(delayMillis: Long, continuation: Continuation<Unit>)
 
 	public fun <R> yield(handler: ContinuationHandler<R, Continuation<R>>): R
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/Task.kt b/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/Task.kt
new file mode 100644
index 0000000..d2a440c
--- /dev/null
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/Task.kt
@@ -0,0 +1,20 @@
+package ru.landgrafhomyak.multitasking_0
+
+public interface Task {
+	public val name: String
+	public val eventLoop: SingleThreadEventLoop
+
+	public fun cancel()
+
+
+	public val state: State
+	public val exception: Throwable
+
+	public enum class State {
+		PENDING,
+		RUNNING,
+		WAITING,
+		FINISHED_SUCCESSFULLY,
+		FINISHED_WITH_ERROR
+	}
+}
\ No newline at end of file
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/TaskKernel.kt b/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/TaskKernel.kt
new file mode 100644
index 0000000..ddaa60b
--- /dev/null
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/multitasking_0/TaskKernel.kt
@@ -0,0 +1,5 @@
+package ru.landgrafhomyak.multitasking_0
+
+public fun interface TaskKernel {
+	public fun run(task: Task)
+}
\ No newline at end of file