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1 // Copyright 2010 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 //     * Redistributions of source code must retain the above copyright
7 //       notice, this list of conditions and the following disclaimer.
8 //     * Redistributions in binary form must reproduce the above
9 //       copyright notice, this list of conditions and the following
10 //       disclaimer in the documentation and/or other materials provided
11 //       with the distribution.
12 //     * Neither the name of Google Inc. nor the names of its
13 //       contributors may be used to endorse or promote products derived
14 //       from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
28 #include "gc-extension.h"
29 
30 namespace v8 {
31 namespace internal {
32 
33 const char* const GCExtension::kSource = "native function gc();";
34 
35 
GetNativeFunction(v8::Handle<v8::String> str)36 v8::Handle<v8::FunctionTemplate> GCExtension::GetNativeFunction(
37     v8::Handle<v8::String> str) {
38   return v8::FunctionTemplate::New(GCExtension::GC);
39 }
40 
41 
GC(const v8::Arguments & args)42 v8::Handle<v8::Value> GCExtension::GC(const v8::Arguments& args) {
43   bool compact = false;
44   // All allocation spaces other than NEW_SPACE have the same effect.
45   if (args.Length() >= 1 && args[0]->IsBoolean()) {
46     compact = args[0]->BooleanValue();
47   }
48   HEAP->CollectAllGarbage(compact);
49   return v8::Undefined();
50 }
51 
52 
Register()53 void GCExtension::Register() {
54   static GCExtension gc_extension;
55   static v8::DeclareExtension gc_extension_declaration(&gc_extension);
56 }
57 
58 } }  // namespace v8::internal
59