michael@0: /* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "PerfMeasurement.h"
michael@0: #include "jsperf.h"
michael@0: #include "mozilla/ModuleUtils.h"
michael@0: #include "nsMemory.h"
michael@0: #include "mozilla/Preferences.h"
michael@0: #include "mozJSComponentLoader.h"
michael@0: #include "nsZipArchive.h"
michael@0: 
michael@0: #define JSPERF_CONTRACTID \
michael@0:   "@mozilla.org/jsperf;1"
michael@0: 
michael@0: #define JSPERF_CID            \
michael@0: { 0x421c38e6, 0xaee0, 0x4509, \
michael@0:   { 0xa0, 0x25, 0x13, 0x0f, 0x43, 0x78, 0x03, 0x5a } }
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace jsperf {
michael@0: 
michael@0: NS_GENERIC_FACTORY_CONSTRUCTOR(Module)
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(Module, nsIXPCScriptable)
michael@0: 
michael@0: Module::Module()
michael@0: {
michael@0: }
michael@0: 
michael@0: Module::~Module()
michael@0: {
michael@0: }
michael@0: 
michael@0: #define XPC_MAP_CLASSNAME Module
michael@0: #define XPC_MAP_QUOTED_CLASSNAME "Module"
michael@0: #define XPC_MAP_WANT_CALL
michael@0: #define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL
michael@0: #include "xpc_map_end.h"
michael@0: 
michael@0: static bool
michael@0: SealObjectAndPrototype(JSContext* cx, JS::Handle<JSObject *> parent, const char* name)
michael@0: {
michael@0:   JS::Rooted<JS::Value> prop(cx);
michael@0:   if (!JS_GetProperty(cx, parent, name, &prop))
michael@0:     return false;
michael@0: 
michael@0:   if (prop.isUndefined()) {
michael@0:     // Pretend we sealed the object.
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   JS::Rooted<JSObject*> obj(cx, prop.toObjectOrNull());
michael@0:   if (!JS_GetProperty(cx, obj, "prototype", &prop))
michael@0:     return false;
michael@0: 
michael@0:   JS::Rooted<JSObject*> prototype(cx, prop.toObjectOrNull());
michael@0:   return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype);
michael@0: }
michael@0: 
michael@0: static bool
michael@0: InitAndSealPerfMeasurementClass(JSContext* cx, JS::Handle<JSObject*> global)
michael@0: {
michael@0:   // Init the PerfMeasurement class
michael@0:   if (!JS::RegisterPerfMeasurement(cx, global))
michael@0:     return false;
michael@0: 
michael@0:   // Seal up Object, Function, and Array and their prototypes.  (This single
michael@0:   // object instance is shared amongst everyone who imports the jsperf module.)
michael@0:   if (!SealObjectAndPrototype(cx, global, "Object") ||
michael@0:       !SealObjectAndPrototype(cx, global, "Function") ||
michael@0:       !SealObjectAndPrototype(cx, global, "Array"))
michael@0:     return false;
michael@0: 
michael@0:   // Finally, seal the global object, for good measure. (But not recursively;
michael@0:   // this breaks things.)
michael@0:   return JS_FreezeObject(cx, global);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: Module::Call(nsIXPConnectWrappedNative* wrapper,
michael@0:              JSContext* cx,
michael@0:              JSObject* obj,
michael@0:              const JS::CallArgs& args,
michael@0:              bool* _retval)
michael@0: {
michael@0: 
michael@0:   mozJSComponentLoader* loader = mozJSComponentLoader::Get();
michael@0:   JS::Rooted<JSObject*> targetObj(cx);
michael@0:   nsresult rv = loader->FindTargetObject(cx, &targetObj);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   *_retval = InitAndSealPerfMeasurementClass(cx, targetObj);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: NS_DEFINE_NAMED_CID(JSPERF_CID);
michael@0: 
michael@0: static const mozilla::Module::CIDEntry kPerfCIDs[] = {
michael@0:   { &kJSPERF_CID, false, nullptr, mozilla::jsperf::ModuleConstructor },
michael@0:   { nullptr }
michael@0: };
michael@0: 
michael@0: static const mozilla::Module::ContractIDEntry kPerfContracts[] = {
michael@0:   { JSPERF_CONTRACTID, &kJSPERF_CID },
michael@0:   { nullptr }
michael@0: };
michael@0: 
michael@0: static const mozilla::Module kPerfModule = {
michael@0:   mozilla::Module::kVersion,
michael@0:   kPerfCIDs,
michael@0:   kPerfContracts
michael@0: };
michael@0: 
michael@0: NSMODULE_DEFN(jsperf) = &kPerfModule;