0.1.1-SNAPSHOT: storages, sync tools, docs

src/nativeMain/kotlin/net.sergeych.bintools/KVStorage.native.kt

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+package net.sergeych.bintools
+
+actual fun defaultNamedStorage(name: String): KVStorage {
+    TODO("Not yet implemented")
+}

src/nativeMain/kotlin/net/sergeych/synctools/ProtectedOp.native.kt

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+package net.sergeych.tools
+
+import kotlinx.atomicfu.locks.ReentrantLock
+
+/**
+ * Native implementation uses `ReentrantLock`]
+ */
+actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
+    private val access = ReentrantLock()
+    override fun lock() {
+        access.lock()
+    }
+
+    override fun unlock() {
+        access.unlock()
+    }
+}

src/nativeMain/kotlin/net/sergeych/synctools/WaitHandle.native.kt

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+package net.sergeych.synctools
+
+import kotlinx.coroutines.TimeoutCancellationException
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.withTimeout
+
+@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
+actual class WaitHandle {
+    private val channel = Channel<Unit>()
+    actual fun await(milliseconds: Long): Boolean {
+        return runBlocking {
+            try {
+                if( milliseconds > 0) {
+                    withTimeout(milliseconds) {
+                        channel.receive()
+                        true
+                    }
+                }
+                else {
+                    channel.receive()
+                    true
+                }
+            }
+            catch(_: TimeoutCancellationException) {
+                false
+            }
+        }
+    }
+
+    actual fun wakeUp() {
+        runBlocking { channel.send(Unit) }
+    }
+}