2f732c2728
This passes the isolate through to API callback functions so that it is available through AccessorInfo and Arguments. This allows bindings to avoid unnecessary TLS lookups to retrieve the current isolate. R=danno@chromium.org TEST=cctest/test-api,cctest/test-accessors Review URL: https://chromiumcodereview.appspot.com/10069050 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11306 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
79 lines
3.4 KiB
C++
79 lines
3.4 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_APIUTILS_H_
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#define V8_APIUTILS_H_
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namespace v8 {
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class ImplementationUtilities {
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public:
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static int GetNameCount(ExtensionConfiguration* that) {
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return that->name_count_;
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}
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static const char** GetNames(ExtensionConfiguration* that) {
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return that->names_;
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}
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// Packs additional parameters for the NewArguments function. |implicit_args|
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// is a pointer to the last element of 4-elements array controlled by GC.
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static void PrepareArgumentsData(internal::Object** implicit_args,
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internal::Isolate* isolate,
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internal::Object* data,
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internal::JSFunction* callee,
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internal::Object* holder) {
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implicit_args[v8::Arguments::kDataIndex] = data;
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implicit_args[v8::Arguments::kCalleeIndex] = callee;
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implicit_args[v8::Arguments::kHolderIndex] = holder;
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implicit_args[v8::Arguments::kIsolateIndex] =
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reinterpret_cast<internal::Object*>(isolate);
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}
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static v8::Arguments NewArguments(internal::Object** implicit_args,
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internal::Object** argv, int argc,
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bool is_construct_call) {
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ASSERT(implicit_args[v8::Arguments::kCalleeIndex]->IsJSFunction());
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ASSERT(implicit_args[v8::Arguments::kHolderIndex]->IsHeapObject());
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// The implicit isolate argument is not tagged and looks like a SMI.
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ASSERT(implicit_args[v8::Arguments::kIsolateIndex]->IsSmi());
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return v8::Arguments(implicit_args, argv, argc, is_construct_call);
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}
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// Introduce an alias for the handle scope data to allow non-friends
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// to access the HandleScope data.
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typedef v8::HandleScope::Data HandleScopeData;
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#ifdef DEBUG
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static void ZapHandleRange(internal::Object** begin, internal::Object** end);
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#endif
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};
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} // namespace v8
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#endif // V8_APIUTILS_H_
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