public ScriptEngine(bool debugOutput = false)
{
_debugOutput = debugOutput;
_runtime = new Microsoft.ClearScript.V8.V8Runtime();
_engine = _runtime.CreateScriptEngine();
_engine.AddHostObject("setTimeout", new Func <dynamic, int, int>(setTimeout));
_engine.AddHostObject("clearTimeout", new Action <int>(clearTimeout));
Func <OutputKind, Action <object> > debugWrite = k => o => log(Convert.ToString(o), k);
_engine.AddHostObject("console", new {
log = debugWrite(OutputKind.Log),
error = debugWrite(OutputKind.Error),
warn = debugWrite(OutputKind.Warning),
debug = _debugOutput ? debugWrite(OutputKind.Debug) : null
});
var queueTransition = new Subject <bool>();
var runQueue = _queue
.Do(_ => queueTransition.OnNext(true))
.ObserveOn(System.Reactive.Concurrency.ThreadPoolScheduler.Instance)
.Do(a => a())
.Do(_ => queueTransition.OnNext(false), queueTransition.OnError, queueTransition.OnCompleted)
.Publish();
var queueSize = queueTransition
.Scan(0, (size, queued) => size + (queued ? 1 : -1))
.Do(s => log("ScriptEngine: Queue size = " + s, OutputKind.Debug), (Exception ex) => log(ex.ToString(), OutputKind.Error))
.Replay(1);
_runningQueue = new CompositeDisposable(runQueue.Connect(), queueSize.Connect());
_queueSize = queueSize;
_doneActions = runQueue;
}
public ReactRunner(string file, bool enableFileWatcher, bool enableCompilation, bool disableGlobalMembers, JsonSerializerSettings serializationSettings)
{
//setup assembly resolver so it can find the v8 dlls
AssemblyResolver.Initialize();
JsFile = file;
EnableFileWatcher = enableFileWatcher;
EnableCompilation = enableCompilation;
DisableGlobalMembers = disableGlobalMembers;
SerializationSettings = serializationSettings;
//Initialize the v8 runtime
Runtime = new V8Runtime();
//Read the scripts text content
ScriptRaw = File.ReadAllText(JsFile);
if (EnableCompilation)
{
//If compilation is enabled, we compile the scripts
Compiled = Runtime.Compile(ScriptRaw);
CompiledShimms = Runtime.Compile(JavascriptShimms.ConsoleShim);
}
if (EnableFileWatcher)
{
fileWatcher = new FileSystemWatcher();
fileWatcher.Path = Path.GetDirectoryName(JsFile);
fileWatcher.Filter = Path.GetFileName(JsFile);
fileWatcher.NotifyFilter = NotifyFilters.LastWrite | NotifyFilters.Attributes | NotifyFilters.Size;
fileWatcher.Changed += fileWatcher_Changed;
fileWatcher.EnableRaisingEvents = true;
}
}
internal V8ScriptEngine(V8Runtime runtime, string name, V8RuntimeConstraints constraints, V8ScriptEngineFlags flags, int debugPort)
: base((runtime != null) ? runtime.Name + ":" + name : name)
{
using (var localRuntime = (runtime != null) ? null : new V8Runtime(name, constraints))
{
var activeRuntime = runtime ?? localRuntime;
hostItemCollateral = activeRuntime.HostItemCollateral;
engineFlags = flags;
proxy = V8ContextProxy.Create(activeRuntime.IsolateProxy, Name, flags, debugPort);
script = GetRootItem();
var engineInternal = Evaluate(
MiscHelpers.FormatInvariant("{0} [internal]", GetType().Name),
false,
@"
EngineInternal = (function () {
function convertArgs(args) {
var result = [];
var count = args.Length;
for (var i = 0; i < count; i++) {
result.push(args[i]);
}
return result;
}
function construct(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15) {
return new this(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15);
}
var isHostObjectKey = this.isHostObjectKey;
delete this.isHostObjectKey;
return {
getCommandResult: function (value) {
if (value == null) {
return value;
}
if (typeof(value.hasOwnProperty) != 'function') {
return '[external]';
}
if (value[isHostObjectKey] === true) {
return value;
}
if (typeof(value.toString) != 'function') {
return '[' + typeof(value) + ']';
}
return value.toString();
},
invokeConstructor: function (constructor, args) {
if (typeof(constructor) != 'function') {
throw new Error('Function expected');
}
return construct.apply(constructor, convertArgs(args));
},
invokeMethod: function (target, method, args) {
if (typeof(method) != 'function') {
throw new Error('Function expected');
}
return method.apply(target, convertArgs(args));
},
getStackTrace: function () {
try {
throw new Error('[stack trace]');
}
catch (exception) {
return exception.stack;
}
return '';
}
};
})();
"
);
((IDisposable)engineInternal).Dispose();
if (flags.HasFlag(V8ScriptEngineFlags.EnableDebugging | V8ScriptEngineFlags.AwaitDebuggerAndPauseOnStart))
{
awaitDebuggerAndPause = true;
}
}
}
/// <summary>
/// Creates a new Runtime Manager.
/// </summary>
/// <param name="settings">Settings to apply to the Runtime Manager and the scripts it runs.</param>
public RuntimeManager(IManagerSettings settings)
{
_settings = settings;
_v8Runtime = new V8Runtime(new V8RuntimeConstraints
{
MaxExecutableSize = settings.MaxExecutableBytes,
MaxOldSpaceSize = settings.MaxOldSpaceBytes,
MaxNewSpaceSize = settings.MaxNewSpaceBytes
});
_scriptCompiler = new ScriptCompiler(_v8Runtime, settings);
}
internal V8ScriptEngine(V8Runtime runtime, string name, V8RuntimeConstraints constraints, V8ScriptEngineFlags flags, int debugPort)
: base((runtime != null) ? runtime.Name + ":" + name : name)
{
using (var localRuntime = (runtime != null) ? null : new V8Runtime(name, constraints))
{
var activeRuntime = runtime ?? localRuntime;
engineFlags = flags;
proxy = V8ContextProxy.Create(activeRuntime.IsolateProxy, Name, flags.HasFlag(V8ScriptEngineFlags.EnableDebugging), flags.HasFlag(V8ScriptEngineFlags.DisableGlobalMembers), debugPort);
script = GetRootItem();
var engineInternal = Evaluate(
MiscHelpers.FormatInvariant("{0} [internal]", GetType().Name),
false,
@"
EngineInternal = (function () {
function convertArgs(args) {
var result = [];
var count = args.Length;
for (var i = 0; i < count; i++) {
result.push(args[i]);
}
return result;
}
function construct(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15) {
return new this(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11, arg12, arg13, arg14, arg15);
}
return {
getCommandResult: function (value) {
if (value != null) {
if (((typeof(value) == 'object') && !value.hasOwnProperty('{c2cf47d3-916b-4a3f-be2a-6ff567425808}')) || (typeof(value) == 'function')) {
if (typeof(value.toString) == 'function') {
return value.toString();
}
}
}
return value;
},
invokeConstructor: function (constructor, args) {
if (typeof(constructor) != 'function') {
throw new Error('Function expected');
}
return construct.apply(constructor, convertArgs(args));
},
invokeMethod: function (target, method, args) {
if (typeof(method) != 'function') {
throw new Error('Function expected');
}
return method.apply(target, convertArgs(args));
},
getStackTrace: function () {
try {
throw new Error('[stack trace]');
}
catch (exception) {
return exception.stack;
}
return '';
}
};
})();
"
);
((IDisposable)engineInternal).Dispose();
}
}
public void V8ScriptEngine_General_Precompiled_Dual()
{
engine.Dispose();
using (var runtime = new V8Runtime())
{
using (var script = runtime.Compile(generalScript))
{
engine = runtime.CreateScriptEngine();
using (var console = new StringWriter())
{
var clr = new HostTypeCollection(type => type != typeof(Console), "mscorlib", "System", "System.Core");
clr.GetNamespaceNode("System").SetPropertyNoCheck("Console", console);
engine.AddHostObject("host", new ExtendedHostFunctions());
engine.AddHostObject("clr", clr);
engine.Evaluate(script);
Assert.AreEqual(MiscHelpers.FormatCode(generalScriptOutput), console.ToString().Replace("\r\n", "\n"));
console.GetStringBuilder().Clear();
Assert.AreEqual(string.Empty, console.ToString());
engine.Evaluate(script);
Assert.AreEqual(MiscHelpers.FormatCode(generalScriptOutput), console.ToString().Replace("\r\n", "\n"));
}
engine.Dispose();
engine = runtime.CreateScriptEngine();
using (var console = new StringWriter())
{
var clr = new HostTypeCollection(type => type != typeof(Console), "mscorlib", "System", "System.Core");
clr.GetNamespaceNode("System").SetPropertyNoCheck("Console", console);
engine.AddHostObject("host", new ExtendedHostFunctions());
engine.AddHostObject("clr", clr);
engine.Evaluate(script);
Assert.AreEqual(MiscHelpers.FormatCode(generalScriptOutput), console.ToString().Replace("\r\n", "\n"));
console.GetStringBuilder().Clear();
Assert.AreEqual(string.Empty, console.ToString());
engine.Evaluate(script);
Assert.AreEqual(MiscHelpers.FormatCode(generalScriptOutput), console.ToString().Replace("\r\n", "\n"));
}
}
}
}
public void V8ScriptEngine_MaxRuntimeStackUsage()
{
using (var runtime = new V8Runtime())
{
using (var engine1 = runtime.CreateScriptEngine())
{
using (var engine2 = runtime.CreateScriptEngine())
{
var value = (UIntPtr)123456;
engine1.MaxRuntimeStackUsage = value;
Assert.AreEqual(value, engine1.MaxRuntimeStackUsage);
Assert.AreEqual(value, engine2.MaxRuntimeStackUsage);
Assert.AreEqual(value, runtime.MaxStackUsage);
value = (UIntPtr)654321;
runtime.MaxStackUsage = value;
Assert.AreEqual(value, engine1.MaxRuntimeStackUsage);
Assert.AreEqual(value, engine2.MaxRuntimeStackUsage);
Assert.AreEqual(value, runtime.MaxStackUsage);
}
}
}
}
public ScriptCompiler(V8Runtime v8Runtime, IManagerSettings settings)
{
_settings = settings;
_v8Runtime = v8Runtime;
_scriptCache = new LruCache<string, CachedV8Script>(LurchTableOrder.Access, settings.ScriptCacheMaxCount);
}
public void BugFix_FinalizerHang_V8ScriptEngine()
{
engine.Dispose();
using (var runtime = new V8Runtime(V8RuntimeFlags.EnableDebugging))
{
engine = runtime.CreateScriptEngine();
engine.Script.bar = new Action(() =>
{
GC.Collect();
GC.WaitForPendingFinalizers();
});
for (var index = 0; index < 100; index++)
{
runtime.CreateScriptEngine();
}
engine.Execute("bar()");
}
}
