1. Create a port when a debugger object is created for an isolate, use this

vm/debugger_api_impl_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
+#include "vm/thread.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 // Only ia32 and x64 can run execution tests.
 #if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
 
 static bool breakpoint_hit = false;
 static int  breakpoint_hit_counter = 0;
 static Dart_Handle script_lib = NULL;
@@ skipping 1014 matching lines @@
   lib_list = Dart_GetLibraryURLs();
   EXPECT_VALID(lib_list);
   EXPECT(Dart_IsList(lib_list));
   list_as_string = Dart_ToString(lib_list);
   list_cstr = "";
   EXPECT_VALID(Dart_StringToCString(list_as_string, &list_cstr));
   EXPECT_SUBSTRING(TestCase::url(), list_cstr);
 }
 
 
+static Dart_IsolateId test_isolate_id = ILLEGAL_ISOLATE_ID;
+static int verify_callback = 0;
+static void TestIsolateID(Dart_IsolateId isolate_id, Dart_IsolateEvent kind) {
+  if (kind == kCreated) {
+    EXPECT(test_isolate_id == ILLEGAL_ISOLATE_ID);
+    test_isolate_id = isolate_id;
+    Dart_Isolate isolate = Dart_GetIsolate(isolate_id);
+    EXPECT(isolate == Dart_CurrentIsolate());
+    verify_callback |= 0x1;  // Register create callback.
+  } else if (kind == kInterrupted) {
+    EXPECT(test_isolate_id == isolate_id);
+    Dart_Isolate isolate = Dart_GetIsolate(isolate_id);
+    EXPECT(isolate == Dart_CurrentIsolate());
+    verify_callback |= 0x2;  // Register interrupt callback.
+  } else if (kind == kShutdown) {
+    EXPECT(test_isolate_id == isolate_id);
+    Dart_Isolate isolate = Dart_GetIsolate(isolate_id);
+    EXPECT(isolate == Dart_CurrentIsolate());
+    verify_callback |= 0x4;  // Register shutdown callback.
+  }
+}
+
+
+UNIT_TEST_CASE(Debug_IsolateID) {
+  const char* kScriptChars =
+      "void moo(s) { }        \n"
+      "class A {              \n"
+      "  static void foo() {  \n"
+      "    moo('good news');  \n"
+      "  }                    \n"
+      "}                      \n"
+      "void main() {          \n"
+      "  A.foo();             \n"
+      "}                      \n";
+
+  Dart_SetIsolateEventHandler(&TestIsolateID);
+  Dart_Isolate isolate = TestCase::CreateTestIsolate();
+  ASSERT(isolate != NULL);
+  Dart_EnterScope();
+  LoadScript(kScriptChars);
+  Dart_Handle retval = Invoke("main");
+  EXPECT_VALID(retval);
+  EXPECT(test_isolate_id != ILLEGAL_ISOLATE_ID);
+  EXPECT(Dart_GetIsolate(test_isolate_id) == isolate);
+  Dart_ExitScope();
+  Dart_ShutdownIsolate();
+  EXPECT(verify_callback == 0x5);  // Only created and shutdown events.
+}
+
+
+static Monitor* sync = NULL;
+static bool isolate_interrupted = false;
+static Dart_IsolateId interrupt_isolate_id = ILLEGAL_ISOLATE_ID;
+static volatile bool continue_isolate_loop = true;
+
+
+static void TestInterruptIsolate(Dart_IsolateId isolate_id,
+                                 Dart_IsolateEvent kind) {
+  if (kind == kCreated) {
+    EXPECT(interrupt_isolate_id == ILLEGAL_ISOLATE_ID);
+    // Indicate that the isolate has been created.
+    {
+      MonitorLocker ml(sync);
+      interrupt_isolate_id = isolate_id;
+      ml.Notify();
+    }
+  } else if (kind == kInterrupted) {
+    // Indicate that isolate has been interrupted.
+    {
+      MonitorLocker ml(sync);
+      isolate_interrupted = true;
+      continue_isolate_loop = false;
+      ml.Notify();
+    }
+  } else if (kind == kShutdown) {
+    if (interrupt_isolate_id == isolate_id) {
+      MonitorLocker ml(sync);
+      interrupt_isolate_id = ILLEGAL_ISOLATE_ID;
+      ml.Notify();
+    }
+  }
+}
+
+
+static void InterruptNativeFunction(Dart_NativeArguments args) {
+  Dart_EnterScope();
+  Dart_Handle val = Dart_NewBoolean(continue_isolate_loop);
+  Dart_SetReturnValue(args, val);
+  Dart_ExitScope();
+}
+
+
+static Dart_NativeFunction InterruptNativeResolver(Dart_Handle name,
+                                                   int arg_count) {
+  return &InterruptNativeFunction;
+}
+
+
+static void InterruptIsolateRun(uword unused) {
+  const char* kScriptChars =
+      "void moo(s) { }              \n"
+      "class A {                    \n"
+      "  static check() native 'a'; \n"
+      "  static void foo() {        \n"
+      "    var loop = true;         \n"
+      "    while (loop) {           \n"
+      "      moo('good news');      \n"
+      "      loop = check();        \n"
+      "    }                        \n"
+      "  }                          \n"
+      "}                            \n"
+      "void main() {                \n"
+      "  A.foo();                   \n"
+      "}                            \n";
+
+  Dart_Isolate isolate = TestCase::CreateTestIsolate();
+  ASSERT(isolate != NULL);
+  Dart_EnterScope();
+  LoadScript(kScriptChars);
+
+  Dart_Handle result = Dart_SetNativeResolver(script_lib,
+                                              &InterruptNativeResolver);
+  EXPECT_VALID(result);
+
+  Dart_Handle retval = Invoke("main");
+  EXPECT_VALID(retval);
+  Dart_ExitScope();
+  Dart_ShutdownIsolate();
+}
+
+
+TEST_CASE(Debug_InterruptIsolate) {
+  Dart_SetIsolateEventHandler(&TestInterruptIsolate);
+  sync = new Monitor();
+  EXPECT(interrupt_isolate_id == ILLEGAL_ISOLATE_ID);
+  int result = Thread::Start(InterruptIsolateRun, 0);
+  EXPECT_EQ(0, result);
+
+  // Wait for the test isolate to be created.
+  {
+    MonitorLocker ml(sync);
+    while (interrupt_isolate_id == ILLEGAL_ISOLATE_ID) {
+      ml.Wait();
+    }
+  }
+  EXPECT(interrupt_isolate_id != ILLEGAL_ISOLATE_ID);
+
+  Dart_Isolate isolate = Dart_GetIsolate(interrupt_isolate_id);
+  EXPECT(isolate != NULL);
+  Dart_InterruptIsolate(isolate);
+
+  // Wait for the test isolate to be interrupted.
+  {
+    MonitorLocker ml(sync);
+    while (!isolate_interrupted) {
+      ml.Wait();
+    }
+  }
+  EXPECT(isolate_interrupted);
+
+  // Wait for the test isolate to shutdown.
+  {
+    MonitorLocker ml(sync);
+    while (interrupt_isolate_id != ILLEGAL_ISOLATE_ID) {
+      ml.Wait();
+    }
+  }
+  EXPECT(interrupt_isolate_id == ILLEGAL_ISOLATE_ID);
+}
+
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart