mimic the jsc shell function run() for latest sunspider

src/extensions/run-extension.cc

+// Copyright 2010 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.
+
+#include "run-extension.h"
+
+namespace v8 {
+namespace internal {
+
+const char* const RunExtension::kSource = "native function run();";
+
+class StopWatch {
+public:
+  StopWatch() : start_(0), stop_(0) {};
+  void start() { start_ = OS::TimeCurrentMillis(); }
+  void stop() { stop_ = OS::TimeCurrentMillis(); }
+  uint32_t ElapsedMillis() { return static_cast<int32_t>(stop_ - start_); }
+private:
+  double start_;
+  double stop_;
+};
+
+
+v8::Handle<v8::FunctionTemplate> RunExtension::GetNativeFunction(
+    v8::Handle<v8::String> str) {
+  return v8::FunctionTemplate::New(RunExtension::Run);
+}
+
+
+bool RunExtension::ExecuteString(v8::Handle<v8::String> source,
+                                 v8::Handle<v8::Value> name) {
+  v8::HandleScope handle_scope;
+  v8::TryCatch try_catch;
+  v8::Handle<v8::Script> script = v8::Script::Compile(source, name);
+  if (script.IsEmpty()) {
+    return false;
+  } else {
+    v8::Handle<Value> result = script->Run();
+    if (result.IsEmpty()) {
+      ASSERT(try_catch.HasCaught());
+      return false;
+    } else {
+      ASSERT(!try_catch.HasCaught());
+      return true;
+    }
+  }
+}
+
+
+v8::Handle<v8::String> RunExtension::ReadFile(const char* name) {
+  FILE* file = fopen(name, "rb");
+  if (file == NULL) return v8::Handle<v8::String>();
+
+  fseek(file, 0, SEEK_END);
+  int size = ftell(file);
+  rewind(file);
+
+  char* chars = new char[size + 1];
+  chars[size] = '\0';
+  for (int i = 0; i < size;) {
+    int read = fread(&chars[i], 1, size - i, file);
+    i += read;
+  }
+  fclose(file);
+  v8::Handle<v8::String> result = v8::String::New(chars, size);
+  delete[] chars;
+  return result;
+}
+
+
+static inline v8::Persistent<v8::Context> CreateShellContext() {
+  // Create a template for the global object.
+  v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
+  return v8::Context::New(NULL, global);
+}
+
+
+v8::Handle<v8::Value> RunExtension::Run(const v8::Arguments& args) {
+  StopWatch watch;
+  watch.start();
+  v8::Persistent<v8::Context> context = CreateShellContext();
+  v8::Context::Scope context_scope(context);
+  for (int i = 0; i < args.Length(); i++) {
+    v8::HandleScope handle_scope;
+    v8::String::Utf8Value file(args[0]); // we only eval the first argument
+    if (*file == NULL) {
+      return ThrowException(v8::String::New("Error loading file"));
+    }
+    v8::Handle<v8::String> source = ReadFile(*file);
+    if (source.IsEmpty()) {
+      return ThrowException(v8::String::New("Error loading file"));
+    }
+    if (!ExecuteString(source, v8::String::New(*file))) {
+      return ThrowException(v8::String::New("Error executing file"));
+    }
+
+  }
+  context.Dispose();
+  watch.stop();
+  return v8::Integer::New(watch.ElapsedMillis());
+}
+
+
+void RunExtension::Register() {
+  static RunExtension run_extension;
+  static v8::DeclareExtension run_extension_declaration(&run_extension);
+}
+
+} }  // namespace v8::internal