static void Main(string[] args)
{
AppDomain.CurrentDomain.FirstChanceException += CurrentDomain_FirstChanceException;
AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
try
{
Console.WriteLine("V8.Net Version: " + V8Engine.Version);
Console.Write(Environment.NewLine + "Creating a V8Engine instance ...");
_JSServer = new V8Engine();
_JSServer.SetFlagsFromCommandLine(args);
Console.WriteLine(" Done!");
Console.Write("Testing marshalling compatibility...");
_JSServer.RunMarshallingTests();
Console.WriteLine(" Pass!");
_TitleUpdateTimer = new System.Timers.Timer(500);
_TitleUpdateTimer.AutoReset = true;
_TitleUpdateTimer.Elapsed += (_o, _e) =>
{
if (!_JSServer.IsDisposed)
{
Console.Title = "V8.Net Console - " + (IntPtr.Size == 4 ? "32-bit" : "64-bit") + " mode (Handles: " + _JSServer.TotalHandles
+ " / Pending Disposal: " + _JSServer.TotalHandlesPendingDisposal
+ " / Cached: " + _JSServer.TotalHandlesCached
+ " / In Use: " + (_JSServer.TotalHandlesInUse) + ")";
}
else
{
Console.Title = "V8.Net Console - Shutting down...";
}
};
_TitleUpdateTimer.Start();
((Action)(() =>
{
_JSServer.DynamicGlobalObject.mo = _JSServer.CreateObjectTemplate().CreateObject(); // (need to keep a reference to the object so the GC doesn't claim it)
}))();
Console.WriteLine(Environment.NewLine + @"Ready - just enter script to execute. Type '\' or '\help' for a list of console specific commands.");
string input, lcInput;
while (true)
{
var ok = ((Func <bool>)(() => // (this forces a scope to close so the GC can collect objects while in debug mode)
{
try
{
Console.Write(Environment.NewLine + "> ");
input = Console.ReadLine();
lcInput = input.Trim().ToLower();
if (lcInput == @"\help" || lcInput == @"\")
{
Console.WriteLine(@"Special console commands (all commands are triggered via a preceding '\' character so as not to confuse it with script code):");
Console.WriteLine(@"\init - Setup environment for testing (adds 'dump()' and 'assert()'.");
Console.WriteLine(@"\flags --flag1 --flag2 --etc... - Sets one or more flags (use '\flags --help' for more details).");
Console.WriteLine(@"\cls - Clears the screen.");
Console.WriteLine(@"\gc - Triggers garbage collection (for testing purposes).");
Console.WriteLine(@"\v8gc - Triggers garbage collection in V8 (for testing purposes).");
Console.WriteLine(@"\gctest - Runs a simple GC test against V8.NET and the native V8 engine.");
Console.WriteLine(@"\handles - Dumps the current list of known handles.");
Console.WriteLine(@"\speedtest - Runs a simple test script to test V8.NET performance with the V8 engine.");
Console.WriteLine(@"\exit - Exits the console.");
}
else if (lcInput == @"\init")
{
Console.WriteLine(Environment.NewLine + "Creating a global 'dump(obj)' function to dump properties of objects (one level only) ...");
_JSServer.ConsoleExecute(@"dump = function(o) { var s=''; if (typeof(o)=='undefined') return 'undefined';"
+ @" if (typeof o.valueOf=='undefined') return ""'valueOf()' is missing on '""+(typeof o)+""' - if you are inheriting from V8ManagedObject, make sure you are not blocking the property."";"
+ @" if (typeof o.toString=='undefined') return ""'toString()' is missing on '""+o.valueOf()+""' - if you are inheriting from V8ManagedObject, make sure you are not blocking the property."";"
+ @" for (var p in o) {var ov='', pv=''; try{ov=o.valueOf();}catch(e){ov='{error: '+e.message+': '+dump(o)+'}';} try{pv=o[p];}catch(e){pv=e.message;} s+='* '+ov+'.'+p+' = ('+pv+')\r\n'; } return s; }");
Console.WriteLine(Environment.NewLine + "Creating a global 'assert(msg, a,b)' function for property value assertion ...");
_JSServer.ConsoleExecute(@"assert = function(msg,a,b) { msg += ' ('+a+'==='+b+'?)'; if (a === b) return msg+' ... Ok.'; else throw msg+' ... Failed!'; }");
}
else if (lcInput == @"\cls")
{
Console.Clear();
}
else if (lcInput == @"\flags" || lcInput.StartsWith(@"\flags "))
{
string flags = lcInput.Substring(6).Trim();
if (flags.Length > 0)
{
_JSServer.SetFlagsFromString(flags);
}
else
{
Console.WriteLine(@"You did not specify any options.");
}
}
else if (lcInput == @"\exit")
{
Console.WriteLine("User requested exit, disposing the engine instance ...");
_JSServer.Dispose();
Console.WriteLine("Engine disposed successfully. Press any key to continue ...");
Console.ReadKey();
Console.WriteLine("Goodbye. :)");
return(false);
}
else if (lcInput == @"\gc")
{
Console.Write(Environment.NewLine + "Forcing garbage collection ... ");
GC.AddMemoryPressure(100000000000);
GC.Collect(3, GCCollectionMode.Forced);
GC.WaitForPendingFinalizers();
GC.RemoveMemoryPressure(100000000000);
Console.WriteLine("Done.\r\n");
Console.WriteLine("Currently Used Memory: " + GC.GetTotalMemory(true));
}
else if (lcInput == @"\v8gc")
{
Console.Write(Environment.NewLine + "Forcing V8 garbage collection ... ");
_JSServer.ForceV8GarbageCollection();
Console.WriteLine("Done.\r\n");
}
else if (lcInput == @"\handles")
{
Console.Write(Environment.NewLine + "Active handles list ... " + Environment.NewLine);
foreach (var h in _JSServer.Handles_Active)
{
Console.WriteLine(" * " + h.Description.Replace(Environment.NewLine, "\\r\\n"));
}
Console.Write(Environment.NewLine + "Managed side dispose-ready handles or non-tracked internal handles (usually due to a GC attempt) ... " + Environment.NewLine);
foreach (var h in _JSServer.Handles_ManagedSideDisposed)
{
Console.WriteLine(" * " + h.Description.Replace(Environment.NewLine, "\\r\\n"));
}
Console.Write(Environment.NewLine + "Native side V8 handles now marked as disposing (in the queue) ... " + Environment.NewLine);
foreach (var h in _JSServer.Handles_Disposing)
{
Console.WriteLine(" * " + h.Description.Replace(Environment.NewLine, "\\r\\n"));
}
Console.Write(Environment.NewLine + "Native side V8 handles that are now disposed (cached) for reuse ... " + Environment.NewLine);
foreach (var h in _JSServer.Handles_DisposedAndCached)
{
Console.WriteLine(" * " + h.Description.Replace(Environment.NewLine, "\\r\\n"));
}
Console.WriteLine(Environment.NewLine + "Done." + Environment.NewLine);
}
else if (lcInput == @"\gctest")
{
Console.WriteLine("\r\nTesting garbage collection ... ");
int objectId = -1;
InternalHandle internalHandle = ((Func <V8Engine, InternalHandle>)((engine) =>
{
V8NativeObject tempObj;
Console.WriteLine("Setting 'tempObj' to a new managed object ...");
engine.DynamicGlobalObject.tempObj = tempObj = engine.CreateObject <V8NativeObject>();
InternalHandle ih = InternalHandle.GetUntrackedHandleFromObject(tempObj);
objectId = tempObj.ID;
Console.WriteLine("Generation of test instance before collect: " + GC.GetGeneration(tempObj));
Console.WriteLine("Releasing the object on the managed side ...");
tempObj = null;
return(ih);
}))(_JSServer);
// (we wait for the object to be sent for disposal by the worker)
GC.Collect();
GC.WaitForPendingFinalizers();
var testobj = _JSServer.GetObjectByID(objectId);
if (testobj != null)
{
Console.WriteLine("Generation of test instance after collect: " + GC.GetGeneration(testobj));
}
else
{
Console.WriteLine("Generation of test instance after collect: Object null for ID: " + objectId);
}
testobj = null;
int i;
for (i = 0; i < 3000 && !internalHandle.IsDisposed; i++)
{
System.Threading.Thread.Sleep(1); // (just wait for the worker)
}
if (!internalHandle.IsDisposed)
{
throw new Exception("The temp object's handle is still not pending disposal ... something is wrong.");
}
Console.WriteLine("Success!");
//Console.WriteLine("Success! The test object's handle is going through the disposal process.");
////Console.WriteLine("Clearing the handle object reference next ...");
//// object handles will finally be disposed when the native V8 GC calls back regarding them ...
//Console.WriteLine("Waiting on the worker to make the object weak on the native V8 side ... ");
//for (i = 0; i < 6000 && !internalHandle.IsNativeDisposed; i++)
// System.Threading.Thread.Sleep(1);
//if (!internalHandle.IsNativeDisposed)
// throw new Exception("Object is not weak yet ... something is wrong.");
//Console.WriteLine("The native side object is now weak and ready to be collected by V8.");
//Console.WriteLine("Forcing V8 garbage collection ... ");
//_JSServer.DynamicGlobalObject.tempObj = null;
//for (i = 0; i < 3000 && !internalHandle.IsDisposed; i++)
//{
// _JSServer.ForceV8GarbageCollection();
// System.Threading.Thread.Sleep(1);
//}
//Console.WriteLine("Looking for object ...");
//if (!internalHandle.IsDisposed) throw new Exception("Managed object's handle did not dispose.");
//// (note: this call is only valid as long as no more objects are created before this point)
//Console.WriteLine("Success! The managed V8NativeObject native handle is now disposed.");
//Console.WriteLine("\r\nDone.\r\n");
}
else if (lcInput == @"\speedtest")
{
var timer = new Stopwatch();
long startTime, elapsed;
long count;
double result1, result2, result3, result4;
#if DEBUG
Console.WriteLine(Environment.NewLine + "WARNING: You are running in debug mode, so the speed will be REALLY slow compared to release.");
#endif
Console.WriteLine(Environment.NewLine + "Running the speed tests ... ");
timer.Start();
//??Console.WriteLine(Environment.NewLine + "Running the property access speed tests ... ");
Console.WriteLine("(Note: 'V8NativeObject' objects are always faster than using the 'V8ManagedObject' objects because native objects store values within the V8 engine and managed objects store theirs on the .NET side.)");
#if DEBUG
count = 20000000;
#else
count = 200000000;
#endif
Console.WriteLine("\r\nTesting native property write speed ... ");
startTime = timer.ElapsedMilliseconds;
_JSServer.Execute("o={i:0}; for (o.i=0; o.i<" + count + "; o.i++) n = 0;", throwExceptionOnError: true); // (o={i:0}; is used in case the global object is managed, which will greatly slow down the loop)
elapsed = timer.ElapsedMilliseconds - startTime;
result1 = (double)elapsed / count;
Console.WriteLine(count + " loops @ " + elapsed + "ms total = " + result1.ToString("0.0#########") + " ms each pass.");
Console.WriteLine("\r\nTesting native property read speed ... ");
startTime = timer.ElapsedMilliseconds;
_JSServer.Execute("for (o.i=0; o.i<" + count + "; o.i++) n;", throwExceptionOnError: true);
elapsed = timer.ElapsedMilliseconds - startTime;
result2 = (double)elapsed / count;
Console.WriteLine(count + " loops @ " + elapsed + "ms total = " + result2.ToString("0.0#########") + " ms each pass.");
#if DEBUG
count = 10000;
#else
count = 2000000;
#endif
Console.WriteLine("\r\nTesting property write speed on a managed object (with interceptors) ... ");
var o = _JSServer.CreateObjectTemplate().CreateObject(); // (need to keep a reference to the object so the GC doesn't claim it)
_JSServer.DynamicGlobalObject.mo = o;
startTime = timer.ElapsedMilliseconds;
_JSServer.Execute("o={i:0}; for (o.i=0; o.i<" + count + "; o.i++) mo.n = 0;", throwExceptionOnError: true);
elapsed = timer.ElapsedMilliseconds - startTime;
result3 = (double)elapsed / count;
Console.WriteLine(count + " loops @ " + elapsed + "ms total = " + result3.ToString("0.0#########") + " ms each pass.");
Console.WriteLine("\r\nTesting property read speed on a managed object (with interceptors) ... ");
startTime = timer.ElapsedMilliseconds;
_JSServer.Execute("for (o.i=0; o.i<" + count + "; o.i++) mo.n;", throwExceptionOnError: true);
elapsed = timer.ElapsedMilliseconds - startTime;
result4 = (double)elapsed / count;
Console.WriteLine(count + " loops @ " + elapsed + "ms total = " + result4.ToString("0.0#########") + " ms each pass.");
Console.WriteLine("\r\nUpdating native properties is {0:N2}x faster than managed ones.", result3 / result1);
Console.WriteLine("\r\nReading native properties is {0:N2}x faster than managed ones.", result4 / result2);
Console.WriteLine("\r\nDone.\r\n");
GC.KeepAlive(o);
}
else if (lcInput.StartsWith(@"\"))
{
Console.WriteLine(@"Invalid console command. Type '\help' to see available commands.");
}
else
{
Console.WriteLine();
try
{
var result = _JSServer.Execute(input, "V8.NET Console", false, 5000);
Console.WriteLine(result.AsString);
if (result.WasTerminated)
{
Console.WriteLine("The script took longer than 5 seconds to run and was aborted.");
}
result.Dispose();
}
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine();
Console.WriteLine(Exceptions.GetFullErrorMessage(ex));
Console.WriteLine();
Console.WriteLine("Error! Press any key to continue ...");
Console.ReadKey();
}
}
}
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine();
Console.WriteLine(Exceptions.GetFullErrorMessage(ex));
Console.WriteLine();
Console.WriteLine("Error! Press any key to continue ...");
Console.ReadKey();
}
return(true);
}))();
if (!ok)
{
break;
}
}
}
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine();
Console.WriteLine(Exceptions.GetFullErrorMessage(ex));
Console.WriteLine();
Console.WriteLine("Error! Press any key to exit ...");
Console.ReadKey();
}
if (_TitleUpdateTimer != null)
{
_TitleUpdateTimer.Dispose();
}
}
