Do not use counting logic

runtime/src/main/cpp/Runtime.cpp

@@ -109,13 +109,12 @@ RuntimeState* initRuntime() {
   return result;
 }
 
-void deinitRuntime(RuntimeState* state) {
+void deinitRuntime(RuntimeState* state, bool destroyRuntime) {
   RuntimeAssert(state->status == RuntimeStatus::kRunning, "Runtime must be in the running state");
   state->status = RuntimeStatus::kDestroying;
   // This may be called after TLS is zeroed out, so ::memoryState in Memory cannot be trusted.
   RestoreMemory(state->memoryState);
-  bool lastRuntime = atomicAdd(&aliveRuntimesCount, -1) == 0;
-  bool destroyRuntime = lastRuntime && atomicGet(&globalRuntimeStatus) == GLOBAL_RUNTIME_DESTROYED;
+  atomicAdd(&aliveRuntimesCount, -1);
   InitOrDeinitGlobalVariables(DEINIT_THREAD_LOCAL_GLOBALS, state->memoryState);
   if (destroyRuntime)
     InitOrDeinitGlobalVariables(DEINIT_GLOBALS, state->memoryState);
@@ -128,7 +127,7 @@ void deinitRuntime(RuntimeState* state) {
 
 void Kotlin_deinitRuntimeCallback(void* argument) {
   auto* state = reinterpret_cast<RuntimeState*>(argument);
-  deinitRuntime(state);
+  deinitRuntime(state, false);
 }
 
 }  // namespace
@@ -159,7 +158,7 @@ void Kotlin_initRuntimeIfNeeded() {
 
 void Kotlin_deinitRuntimeIfNeeded() {
   if (isValidRuntime()) {
-    deinitRuntime(::runtimeState);
+    deinitRuntime(::runtimeState, false);
     ::runtimeState = kInvalidRuntime;
   }
 }
@@ -184,7 +183,21 @@ void Kotlin_destroyRuntime() {
 
     atomicSet(&globalRuntimeStatus, GLOBAL_RUNTIME_DESTROYED);
 
-    Kotlin_deinitRuntimeIfNeeded();
+    // At this point `aliveRuntimesCount` can only go down as no new runtime can be created.
+    bool otherRuntimesCount = atomicGet(&aliveRuntimesCount) - 1;
+    RuntimeAssert(otherRuntimesCount >= 0, "Cannot be negative");
+
+    if (Kotlin_cleanersLeakCheckerEnabled() || Kotlin_memoryLeakCheckerEnabled()) {
+        // Checkers can only work if this is the last runtime.
+        if (otherRuntimesCount > 0) {
+            konan::consoleErrorf(
+                    "Cannot destroy runtime while there're %d alive threads with Kotlin runtime on them.\n", otherRuntimesCount);
+            konan::abort();
+        }
+    }
+
+    deinitRuntime(::runtimeState, otherRuntimesCount == 0);
+    ::runtimeState = kInvalidRuntime;
 }
 
 KInt Konan_Platform_canAccessUnaligned() {