Implement Math.random() purely in JavaScript.

test/cctest/test-weaktypedarrays.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 71 matching lines @@
   }
   return false;
 }
 
 
 TEST(WeakArrayBuffersFromApi) {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);
 
-  CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()));
+  int start = CountArrayBuffersInWeakList(isolate->heap());
   {
     v8::HandleScope s1(context->GetIsolate());
     v8::Handle<v8::ArrayBuffer> ab1 = v8::ArrayBuffer::New(256);
     {
       v8::HandleScope s2(context->GetIsolate());
       v8::Handle<v8::ArrayBuffer> ab2 = v8::ArrayBuffer::New(128);
 
       Handle<JSArrayBuffer> iab1 = v8::Utils::OpenHandle(*ab1);
       Handle<JSArrayBuffer> iab2 = v8::Utils::OpenHandle(*ab2);
-      CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()));
+      CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()) - start);
       CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab1));
       CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab2));
     }
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
-    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()));
+    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
     {
       HandleScope scope2(isolate);
       Handle<JSArrayBuffer> iab1 = v8::Utils::OpenHandle(*ab1);
 
       CHECK(HasArrayBufferInWeakList(isolate->heap(), *iab1));
     }
   }
 
   isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
-  CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()));
+  CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()) - start);
 }
 
 
 TEST(WeakArrayBuffersFromScript) {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);
+  int start = CountArrayBuffersInWeakList(isolate->heap());
 
   for (int i = 1; i <= 3; i++) {
     // Create 3 array buffers, make i-th of them garbage,
     // validate correct state of array buffer weak list.
-    CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()));
+    CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()) - start);
     {
       v8::HandleScope scope(context->GetIsolate());
 
       {
         v8::HandleScope s1(context->GetIsolate());
         CompileRun("var ab1 = new ArrayBuffer(256);"
                    "var ab2 = new ArrayBuffer(256);"
                    "var ab3 = new ArrayBuffer(256);");
         v8::Handle<v8::ArrayBuffer> ab1 =
             v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab1"));
         v8::Handle<v8::ArrayBuffer> ab2 =
             v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab2"));
         v8::Handle<v8::ArrayBuffer> ab3 =
             v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab3"));
 
-        CHECK_EQ(3, CountArrayBuffersInWeakList(isolate->heap()));
+        CHECK_EQ(3, CountArrayBuffersInWeakList(isolate->heap()) - start);
         CHECK(HasArrayBufferInWeakList(isolate->heap(),
               *v8::Utils::OpenHandle(*ab1)));
         CHECK(HasArrayBufferInWeakList(isolate->heap(),
               *v8::Utils::OpenHandle(*ab2)));
         CHECK(HasArrayBufferInWeakList(isolate->heap(),
               *v8::Utils::OpenHandle(*ab3)));
       }
 
       i::ScopedVector<char> source(1024);
       i::OS::SNPrintF(source, "ab%d = null;", i);
       CompileRun(source.start());
       isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
 
-      CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()));
+      CHECK_EQ(2, CountArrayBuffersInWeakList(isolate->heap()) - start);
 
       {
         v8::HandleScope s2(context->GetIsolate());
         for (int j = 1; j <= 3; j++) {
           if (j == i) continue;
           i::OS::SNPrintF(source, "ab%d", j);
           v8::Handle<v8::ArrayBuffer> ab =
               v8::Handle<v8::ArrayBuffer>::Cast(CompileRun(source.start()));
           CHECK(HasArrayBufferInWeakList(isolate->heap(),
                 *v8::Utils::OpenHandle(*ab)));
           }
       }
 
       CompileRun("ab1 = null; ab2 = null; ab3 = null;");
     }
 
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
-    CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()));
+    CHECK_EQ(0, CountArrayBuffersInWeakList(isolate->heap()) - start);
   }
 }
 
 template <typename View>
 void TestViewFromApi() {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);
 
   v8::HandleScope s1(context->GetIsolate());
@@ skipping 71 matching lines @@
 TEST(DataViewFromApi) {
   TestViewFromApi<v8::DataView>();
 }
 
 template <typename TypedArray>
 static void TestTypedArrayFromScript(const char* constructor) {
   v8::V8::Initialize();
   LocalContext context;
   Isolate* isolate = GetIsolateFrom(&context);
   v8::HandleScope scope(context->GetIsolate());
+  int start = CountArrayBuffersInWeakList(isolate->heap());
   CompileRun("var ab = new ArrayBuffer(2048);");
   for (int i = 1; i <= 3; i++) {
     // Create 3 typed arrays, make i-th of them garbage,
     // validate correct state of typed array weak list.
     v8::HandleScope s0(context->GetIsolate());
     i::ScopedVector<char> source(2048);
 
-    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()));
+    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
 
     {
       v8::HandleScope s1(context->GetIsolate());
       i::OS::SNPrintF(source,
                   "var ta1 = new %s(ab);"
                   "var ta2 = new %s(ab);"
                   "var ta3 = new %s(ab)",
                   constructor, constructor, constructor);
 
       CompileRun(source.start());
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       v8::Handle<TypedArray> ta1 =
           v8::Handle<TypedArray>::Cast(CompileRun("ta1"));
       v8::Handle<TypedArray> ta2 =
           v8::Handle<TypedArray>::Cast(CompileRun("ta2"));
       v8::Handle<TypedArray> ta3 =
           v8::Handle<TypedArray>::Cast(CompileRun("ta3"));
-      CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()));
+      CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
       CHECK_EQ(3, CountViews(*iab));
       CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta1)));
       CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta2)));
       CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta3)));
     }
 
     i::OS::SNPrintF(source, "ta%d = null;", i);
     CompileRun(source.start());
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
 
-    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()));
+    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
 
     {
       v8::HandleScope s2(context->GetIsolate());
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
       CHECK_EQ(2, CountViews(*iab));
       for (int j = 1; j <= 3; j++) {
         if (j == i) continue;
         i::OS::SNPrintF(source, "ta%d", j);
         v8::Handle<TypedArray> ta =
             v8::Handle<TypedArray>::Cast(CompileRun(source.start()));
         CHECK(HasViewInWeakList(*iab, *v8::Utils::OpenHandle(*ta)));
       }
     }
 
     CompileRun("ta1 = null; ta2 = null; ta3 = null;");
     isolate->heap()->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
 
-    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()));
+    CHECK_EQ(1, CountArrayBuffersInWeakList(isolate->heap()) - start);
 
     {
       v8::HandleScope s3(context->GetIsolate());
       v8::Handle<v8::ArrayBuffer> ab =
           v8::Handle<v8::ArrayBuffer>::Cast(CompileRun("ab"));
       Handle<JSArrayBuffer> iab = v8::Utils::OpenHandle(*ab);
       CHECK_EQ(0, CountViews(*iab));
     }
   }
 }
@@ skipping 40 matching lines @@
 
 
 TEST(Uint8ClampedArrayFromScript) {
   TestTypedArrayFromScript<v8::Uint8ClampedArray>("Uint8ClampedArray");
 }
 
 
 TEST(DataViewFromScript) {
   TestTypedArrayFromScript<v8::DataView>("DataView");
 }