Patch for allowing several V8 instances in process:...

samples/shell.cc

 // Copyright 2009 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.
+#define V8_TEST
 
+#ifdef V8_TEST
+#define WIN32
+#include <../src/v8.h>
+#include <../src/v8-global-context.h>
+#else
 #include <v8.h>
 #include <fcntl.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
-
+#endif
 
 void RunShell(v8::Handle<v8::Context> context);
 bool ExecuteString(v8::Handle<v8::String> source,
                    v8::Handle<v8::Value> name,
                    bool print_result,
                    bool report_exceptions);
 v8::Handle<v8::Value> Print(const v8::Arguments& args);
 v8::Handle<v8::Value> Read(const v8::Arguments& args);
 v8::Handle<v8::Value> Load(const v8::Arguments& args);
 v8::Handle<v8::Value> Quit(const v8::Arguments& args);
 v8::Handle<v8::Value> Version(const v8::Arguments& args);
 v8::Handle<v8::String> ReadFile(const char* name);
 void ReportException(v8::TryCatch* handler);
 
 
 int RunMain(int argc, char* argv[]) {
-  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
   v8::HandleScope handle_scope;
   // Create a template for the global object.
   v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
   // Bind the global 'print' function to the C++ Print callback.
   global->Set(v8::String::New("print"), v8::FunctionTemplate::New(Print));
   // Bind the global 'read' function to the C++ Read callback.
   global->Set(v8::String::New("read"), v8::FunctionTemplate::New(Read));
   // Bind the global 'load' function to the C++ Load callback.
   global->Set(v8::String::New("load"), v8::FunctionTemplate::New(Load));
   // Bind the 'quit' function
@@ skipping 34 matching lines @@
         return 1;
       }
       if (!ExecuteString(source, file_name, false, true))
         return 1;
     }
   }
   if (run_shell) RunShell(context);
   return 0;
 }
 
+#ifdef V8_TEST
+v8::AllowSeveralV8InstancesInProcess v8_please;
+
+class V8Runner: public v8::internal::Thread {
+ public:
+  V8Runner(int argc, char* argv[])
+    :argc_(argc), argv_(argv) {
+  }
+
+  int result() const { return result_; }
+ private:
+  int argc_;
+  char** const argv_;
+  int result_;
+
+  virtual void Run() {
+    v8::V8ContextProvider v8_context_provider;
+    v8::V8ContextBinder v8_context_binder(v8_context_provider);
+    result_ = RunMain(argc_, argv_);
+    v8::V8::Dispose();
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(V8Runner);
+};
+#endif
 
 int main(int argc, char* argv[]) {
+  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
+#ifdef V8_TEST
+  const int kAdditionalParallelThreads = 0;
+  V8Runner** runners = new V8Runner*[kAdditionalParallelThreads];
+  for (int i = 0; i < kAdditionalParallelThreads; ++i) {
+    runners[i] = new V8Runner(argc, argv);
+    runners[i]->Start();
+  }
+#endif
+
   int result = RunMain(argc, argv);
   v8::V8::Dispose();
-  return result;
+
+  bool allResultsTheSame = true;
+#ifdef V8_TEST
+  for (int i = 0; i < kAdditionalParallelThreads; ++i) {
+    runners[i]->Join();
+    if (result != runners[i]->result()) {
+      allResultsTheSame = false;
+    }
+  }
+#endif
+  return allResultsTheSame ? result : -1;
 }
 
 
 // Extracts a C string from a V8 Utf8Value.
 const char* ToCString(const v8::String::Utf8Value& value) {
   return *value ? *value : "<string conversion failed>";
 }
 
 
 // The callback that is invoked by v8 whenever the JavaScript 'print'
@@ skipping 174 matching lines @@
     for (int i = 0; i < start; i++) {
       printf(" ");
     }
     int end = message->GetEndColumn();
     for (int i = start; i < end; i++) {
       printf("^");
     }
     printf("\n");
   }
 }