Added runtime init (#846)

runtime/src/main/cpp/Runtime.cpp

@@ -45,6 +45,8 @@ void InitOrDeinitGlobalVariables(int initialize) {
   }
 }
 
+THREAD_LOCAL_VARIABLE RuntimeState* runtimeState = nullptr;
+
 }  // namespace
 
 extern "C" {
@@ -67,6 +69,7 @@ RuntimeState* InitRuntime() {
   // Keep global variables in state as well.
   InitOrDeinitGlobalVariables(true);
   konan::consoleInit();
+  runtimeState = result;
   return result;
 }
 
@@ -78,4 +81,16 @@ void DeinitRuntime(RuntimeState* state) {
   }
 }
 
+void Kotlin_initRuntimeIfNeeded() {
+  if (runtimeState == nullptr)
+    runtimeState = InitRuntime();
+}
+
+void Kotlin_deinitRuntimeIfNeeded() {
+  if (runtimeState != nullptr) {
+     DeinitRuntime(runtimeState);
+     runtimeState = nullptr;
+  }
+}
+
 }  // extern "C"

runtime/src/main/kotlin/konan/runtime.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package konan
+
+// Initializes Kotlin runtime for the current thread, if not inited already.
+@SymbolName("Kotlin_initRuntimeIfNeeded")
+external public fun initRuntimeIfNeeded(): Unit
+
+// Deiitializes Kotlin runtime for the current thread, if was inited.
+@SymbolName("Kotlin_deinitRuntimeIfNeeded")
+external public fun deinitRuntimeIfNeeded(): Unit