Upgrade to V8 3.5
Merge V8 3.5.10.24
Simple merge required updates to makefiles only.
Bug: 5688872
Change-Id: I0acdb9a1a53919d84e9a7525308e8371739d2f06
diff --git a/test/cctest/test-weakmaps.cc b/test/cctest/test-weakmaps.cc
new file mode 100644
index 0000000..db4db25
--- /dev/null
+++ b/test/cctest/test-weakmaps.cc
@@ -0,0 +1,149 @@
+// Copyright 2011 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
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "v8.h"
+
+#include "global-handles.h"
+#include "snapshot.h"
+#include "cctest.h"
+
+using namespace v8::internal;
+
+
+static Handle<JSWeakMap> AllocateJSWeakMap() {
+ Handle<Map> map = FACTORY->NewMap(JS_WEAK_MAP_TYPE, JSWeakMap::kSize);
+ Handle<JSObject> weakmap_obj = FACTORY->NewJSObjectFromMap(map);
+ Handle<JSWeakMap> weakmap(JSWeakMap::cast(*weakmap_obj));
+ // Do not use handles for the hash table, it would make entries strong.
+ Object* table_obj = ObjectHashTable::Allocate(1)->ToObjectChecked();
+ ObjectHashTable* table = ObjectHashTable::cast(table_obj);
+ weakmap->set_table(table);
+ weakmap->set_next(Smi::FromInt(0));
+ return weakmap;
+}
+
+static void PutIntoWeakMap(Handle<JSWeakMap> weakmap,
+ Handle<JSObject> key,
+ int value) {
+ Handle<ObjectHashTable> table = PutIntoObjectHashTable(
+ Handle<ObjectHashTable>(weakmap->table()),
+ Handle<JSObject>(JSObject::cast(*key)),
+ Handle<Smi>(Smi::FromInt(value)));
+ weakmap->set_table(*table);
+}
+
+static int NumberOfWeakCalls = 0;
+static void WeakPointerCallback(v8::Persistent<v8::Value> handle, void* id) {
+ ASSERT(id == reinterpret_cast<void*>(1234));
+ NumberOfWeakCalls++;
+ handle.Dispose();
+}
+
+
+TEST(Weakness) {
+ LocalContext context;
+ v8::HandleScope scope;
+ Handle<JSWeakMap> weakmap = AllocateJSWeakMap();
+ GlobalHandles* global_handles = Isolate::Current()->global_handles();
+
+ // Keep global reference to the key.
+ Handle<Object> key;
+ {
+ v8::HandleScope scope;
+ Handle<Map> map = FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
+ Handle<JSObject> object = FACTORY->NewJSObjectFromMap(map);
+ key = global_handles->Create(*object);
+ }
+ CHECK(!global_handles->IsWeak(key.location()));
+
+ // Put entry into weak map.
+ {
+ v8::HandleScope scope;
+ PutIntoWeakMap(weakmap, Handle<JSObject>(JSObject::cast(*key)), 23);
+ }
+ CHECK_EQ(1, weakmap->table()->NumberOfElements());
+
+ // Force a full GC.
+ HEAP->CollectAllGarbage(false);
+ CHECK_EQ(0, NumberOfWeakCalls);
+ CHECK_EQ(1, weakmap->table()->NumberOfElements());
+ CHECK_EQ(0, weakmap->table()->NumberOfDeletedElements());
+
+ // Make the global reference to the key weak.
+ {
+ v8::HandleScope scope;
+ global_handles->MakeWeak(key.location(),
+ reinterpret_cast<void*>(1234),
+ &WeakPointerCallback);
+ }
+ CHECK(global_handles->IsWeak(key.location()));
+
+ // Force a full GC.
+ // Perform two consecutive GCs because the first one will only clear
+ // weak references whereas the second one will also clear weak maps.
+ HEAP->CollectAllGarbage(false);
+ CHECK_EQ(1, NumberOfWeakCalls);
+ CHECK_EQ(1, weakmap->table()->NumberOfElements());
+ CHECK_EQ(0, weakmap->table()->NumberOfDeletedElements());
+ HEAP->CollectAllGarbage(false);
+ CHECK_EQ(1, NumberOfWeakCalls);
+ CHECK_EQ(0, weakmap->table()->NumberOfElements());
+ CHECK_EQ(1, weakmap->table()->NumberOfDeletedElements());
+}
+
+
+TEST(Shrinking) {
+ LocalContext context;
+ v8::HandleScope scope;
+ Handle<JSWeakMap> weakmap = AllocateJSWeakMap();
+
+ // Check initial capacity.
+ CHECK_EQ(32, weakmap->table()->Capacity());
+
+ // Fill up weak map to trigger capacity change.
+ {
+ v8::HandleScope scope;
+ Handle<Map> map = FACTORY->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
+ for (int i = 0; i < 32; i++) {
+ Handle<JSObject> object = FACTORY->NewJSObjectFromMap(map);
+ PutIntoWeakMap(weakmap, object, i);
+ }
+ }
+
+ // Check increased capacity.
+ CHECK_EQ(128, weakmap->table()->Capacity());
+
+ // Force a full GC.
+ CHECK_EQ(32, weakmap->table()->NumberOfElements());
+ CHECK_EQ(0, weakmap->table()->NumberOfDeletedElements());
+ HEAP->CollectAllGarbage(false);
+ CHECK_EQ(0, weakmap->table()->NumberOfElements());
+ CHECK_EQ(32, weakmap->table()->NumberOfDeletedElements());
+
+ // Check shrunk capacity.
+ CHECK_EQ(32, weakmap->table()->Capacity());
+}