Only reload libraries when they may have been modified.

runtime/vm/snapshot_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 "platform/globals.h"
 
 #include "include/dart_tools_api.h"
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/clustered_snapshot.h"
@@ skipping 1355 matching lines @@
 
   // Test for Dart_CreateScriptSnapshot.
   {
     // Create an Isolate using the full snapshot, load a script and create
     // a script snapshot of the script.
     TestCase::CreateTestIsolateFromSnapshot(full_snapshot);
     Dart_EnterScope();  // Start a Dart API scope for invoking API functions.
 
     // Load the library.
     Dart_Handle import_lib = Dart_LoadLibrary(NewString("dart_import_lib"),
+                                              Dart_Null(),
                                               NewString(kLibScriptChars),
                                               0, 0);
     EXPECT_VALID(import_lib);
 
     // Create a test library and Load up a test script in it.
     TestCase::LoadTestScript(kScriptChars, NULL);
 
     EXPECT_VALID(Dart_LibraryImportLibrary(TestCase::lib(),
                                            import_lib,
                                            Dart_Null()));
@@ skipping 42 matching lines @@
 
   // Test for Dart_CreateLibrarySnapshot.
   {
     // Create an Isolate using the full snapshot, load a script and create
     // a script snapshot of the script.
     TestCase::CreateTestIsolateFromSnapshot(full_snapshot);
     Dart_EnterScope();  // Start a Dart API scope for invoking API functions.
 
     // Load the library.
     Dart_Handle lib = Dart_LoadLibrary(NewString("dart_lib"),
+                                       Dart_Null(),
                                        NewString(kScriptChars),
                                        0, 0);
     EXPECT_VALID(lib);
 
     // Write out the script snapshot.
     result = Dart_CreateLibrarySnapshot(lib, &buffer, &size);
     EXPECT_VALID(result);
     script_snapshot = reinterpret_cast<uint8_t*>(malloc(size));
     memmove(script_snapshot, buffer, size);
     Dart_ExitScope();
@@ skipping 155 matching lines @@
   FLAG_concurrent_sweep = saved_concurrent_sweep_mode;
 
   {
     // Create an Isolate using the full snapshot, load a script and create
     // a script snapshot of the script.
     TestCase::CreateTestIsolateFromSnapshot(full_snapshot);
     Dart_EnterScope();  // Start a Dart API scope for invoking API functions.
 
     // Load the library.
     Dart_Handle import_lib = Dart_LoadLibrary(NewString("dart_import_lib"),
+                                              Dart_Null(),
                                               NewString(kLibScriptChars),
                                               0, 0);
     EXPECT_VALID(import_lib);
 
     // Create a test library and Load up a test script in it.
     TestCase::LoadTestScript(kScriptChars, NULL);
 
     EXPECT_VALID(Dart_LibraryImportLibrary(TestCase::lib(),
                                            import_lib,
                                            Dart_Null()));
@@ skipping 1388 matching lines @@
   StackZone zone(Thread::Current());
   uint8_t* buffer;
   MessageWriter writer(&buffer, &zone_allocator, true);
   writer.WriteInlinedObjectHeader(kOmittedObjectId);
   // For performance, we'd like single-byte headers when ids are omitted.
   // If this starts failing, consider renumbering the snapshot ids.
   EXPECT_EQ(1, writer.BytesWritten());
 }
 
 }  // namespace dart