[K/N][tests] Migrate interopTest tests ^KT-61259

native/native.tests/testData/standalone/workerSignals.kt

@@ -0,0 +1,73 @@
+// Cross-thread signalling does not work on Windows
+// DISABLE_NATIVE: targetFamily=MINGW
+// MODULE: cinterop
+// FILE: workerSignals.def
+---
+#include <stdint.h>
+void setupSignalHandler(void);
+void signalThread(uint64_t thread, int value);
+int getValue(void);
+
+// FILE: workerSignals.cpp
+#include <cassert>
+#include <cstdint>
+#include <cstring>
+#include <pthread.h>
+#include <signal.h>
+
+namespace {
+
+int pendingValue = 0;
+thread_local int value = 0;
+
+void signalHandler(int signal) {
+    value = pendingValue;
+}
+
+} // namespace
+
+extern "C" void setupSignalHandler(void) {
+    signal(SIGUSR1, &signalHandler);
+}
+
+extern "C" void signalThread(uint64_t thread, int value) {
+    pendingValue = value;
+    pthread_t t = {};
+    memcpy(&t, &thread, sizeof(pthread_t));
+    auto result = pthread_kill(t, SIGUSR1);
+    assert(result == 0);
+}
+
+extern "C" int getValue(void) {
+    return value;
+}
+
+// MODULE: main(cinterop)
+// FILE: main.kt
+@file:OptIn(kotlin.ExperimentalStdlibApi::class, ObsoleteWorkersApi::class, kotlinx.cinterop.ExperimentalForeignApi::class)
+
+import kotlin.native.concurrent.*
+import kotlin.test.*
+import workerSignals.*
+
+const val defaultValue = 0
+const val newValue = 42
+
+fun main() {
+    setupSignalHandler()
+
+    withWorker {
+        val before = execute(TransferMode.SAFE, {}) {
+            getValue()
+        }.result
+        assertEquals(defaultValue, getValue())
+        assertEquals(defaultValue, before)
+
+        signalThread(platformThreadId, newValue)
+        val after = execute(TransferMode.SAFE, {}) {
+            getValue()
+        }.result
+        assertEquals(defaultValue, getValue())
+        assertEquals(newValue, after)
+    }
+}