/*
 * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */
// TARGET_BACKEND: NATIVE
// NATIVE_STANDALONE
// MODULE: cinterop
// FILE: threadStates.def
language = C
---
#include <stdint.h>

void assertNativeThreadState();

void runCallback(void(*callback)(void)) {
    assertNativeThreadState();
    callback();
    assertNativeThreadState();
}

int32_t answer() {
    assertNativeThreadState();
    return 42;
}

// FILE: threadStates.cpp
#include <stdio.h>
#include <stdlib.h>

// Implemented in the runtime for test purposes.
extern "C" bool Kotlin_Debugging_isThreadStateNative();

extern "C" void assertNativeThreadState() {
    if (!Kotlin_Debugging_isThreadStateNative()) {
        printf("Incorrect thread state. Expected native thread state.");
        abort();
    }
}

// MODULE: main(cinterop)
// FILE: main.kt
@file:OptIn(kotlin.native.runtime.NativeRuntimeApi::class, kotlinx.cinterop.ExperimentalForeignApi::class)

import kotlin.native.runtime.Debugging
import kotlin.test.*
import kotlinx.cinterop.*
import threadStates.*

fun box(): String {
    runCallback(staticCFunction { ->
        assertRunnableThreadState()
        answer()
        Unit
    })
    assertRunnableThreadState()
    return "OK"
}

fun assertRunnableThreadState() {
    assertTrue(Debugging.isThreadStateRunnable)
}
