Version 3.22.13
Do not look up ArrayBuffer on global object in typed array constructor. (issue 2931)
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@17231 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/allocation-site-scopes.h b/src/allocation-site-scopes.h
new file mode 100644
index 0000000..1c3afdf
--- /dev/null
+++ b/src/allocation-site-scopes.h
@@ -0,0 +1,115 @@
+// 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
+// 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.
+
+#ifndef V8_ALLOCATION_SITE_SCOPES_H_
+#define V8_ALLOCATION_SITE_SCOPES_H_
+
+#include "ast.h"
+#include "handles.h"
+#include "objects.h"
+#include "zone.h"
+
+namespace v8 {
+namespace internal {
+
+
+// AllocationSiteContext is the base class for walking and copying a nested
+// boilerplate with AllocationSite and AllocationMemento support.
+class AllocationSiteContext {
+ public:
+ AllocationSiteContext(Isolate* isolate, bool activated) {
+ isolate_ = isolate;
+ activated_ = activated;
+ };
+ virtual ~AllocationSiteContext() {}
+
+ Handle<AllocationSite> top() { return top_; }
+ Handle<AllocationSite> current() { return current_; }
+
+ // If activated, then recursively create mementos
+ bool activated() const { return activated_; }
+
+ // Returns the AllocationSite that matches this scope.
+ virtual Handle<AllocationSite> EnterNewScope() = 0;
+
+ // scope_site should be the handle returned by the matching EnterNewScope()
+ virtual void ExitScope(Handle<AllocationSite> scope_site,
+ Handle<JSObject> object) = 0;
+
+ protected:
+ void update_current_site(AllocationSite* site) {
+ *(current_.location()) = site;
+ }
+
+ Isolate* isolate() { return isolate_; }
+ void InitializeTraversal(Handle<AllocationSite> site) {
+ top_ = site;
+ current_ = Handle<AllocationSite>(*top_, isolate());
+ }
+
+ private:
+ Isolate* isolate_;
+ Handle<AllocationSite> top_;
+ Handle<AllocationSite> current_;
+ bool activated_;
+};
+
+
+// AllocationSiteCreationContext aids in the creation of AllocationSites to
+// accompany object literals.
+class AllocationSiteCreationContext : public AllocationSiteContext {
+ public:
+ explicit AllocationSiteCreationContext(Isolate* isolate)
+ : AllocationSiteContext(isolate, true) { }
+
+ virtual Handle<AllocationSite> EnterNewScope() V8_OVERRIDE;
+ virtual void ExitScope(Handle<AllocationSite> site,
+ Handle<JSObject> object) V8_OVERRIDE;
+};
+
+
+// AllocationSiteUsageContext aids in the creation of AllocationMementos placed
+// behind some/all components of a copied object literal.
+class AllocationSiteUsageContext : public AllocationSiteContext {
+ public:
+ AllocationSiteUsageContext(Isolate* isolate, Handle<AllocationSite> site,
+ bool activated)
+ : AllocationSiteContext(isolate, activated),
+ top_site_(site) { }
+
+ virtual Handle<AllocationSite> EnterNewScope() V8_OVERRIDE;
+ virtual void ExitScope(Handle<AllocationSite> site,
+ Handle<JSObject> object) V8_OVERRIDE;
+
+ private:
+ Handle<AllocationSite> top_site_;
+};
+
+
+} } // namespace v8::internal
+
+#endif // V8_ALLOCATION_SITE_SCOPES_H_