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 #include "platform.h" 30 31 namespace v8 { 32 namespace internal { 33 34 35 v8::Handle<v8::FunctionTemplate> GCExtension::GetNativeFunctionTemplate( 36 v8::Isolate* isolate, 37 v8::Handle<v8::String> str) { 38 return v8::FunctionTemplate::New(GCExtension::GC); 39 } 40 41 42 void GCExtension::GC(const v8::FunctionCallbackInfo<v8::Value>& args) { 43 i::Isolate* isolate = reinterpret_cast<i::Isolate*>(args.GetIsolate()); 44 if (args[0]->BooleanValue()) { 45 isolate->heap()->CollectGarbage(NEW_SPACE, "gc extension"); 46 } else { 47 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, "gc extension"); 48 } 49 } 50 51 52 void GCExtension::Register() { 53 static char buffer[50]; 54 Vector<char> temp_vector(buffer, sizeof(buffer)); 55 if (FLAG_expose_gc_as != NULL && strlen(FLAG_expose_gc_as) != 0) { 56 OS::SNPrintF(temp_vector, "native function %s();", FLAG_expose_gc_as); 57 } else { 58 OS::SNPrintF(temp_vector, "native function gc();"); 59 } 60 61 static GCExtension gc_extension(buffer); 62 static v8::DeclareExtension declaration(&gc_extension); 63 } 64 65 } } // namespace v8::internal 66
