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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PerfMeasurement.h"
#include "jsperf.h"
#include "mozilla/ModuleUtils.h"
#include "nsMemory.h"
#include "mozilla/Preferences.h"
#include "mozJSComponentLoader.h"
#define JSPERF_CONTRACTID \
"@mozilla.org/jsperf;1"
#define JSPERF_CID \
{ 0x421c38e6, 0xaee0, 0x4509, \
{ 0xa0, 0x25, 0x13, 0x0f, 0x43, 0x78, 0x03, 0x5a } }
namespace mozilla {
namespace jsperf {
NS_GENERIC_FACTORY_CONSTRUCTOR(Module)
NS_IMPL_ISUPPORTS1(Module, nsIXPCScriptable)
Module::Module()
{
}
Module::~Module()
{
}
#define XPC_MAP_CLASSNAME Module
#define XPC_MAP_QUOTED_CLASSNAME "Module"
#define XPC_MAP_WANT_CALL
#define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL
#include "xpc_map_end.h"
static JSBool
SealObjectAndPrototype(JSContext* cx, JSObject* parent, const char* name)
{
jsval prop;
if (!JS_GetProperty(cx, parent, name, &prop))
return false;
if (prop.isUndefined()) {
// Pretend we sealed the object.
return true;
}
JSObject* obj = JSVAL_TO_OBJECT(prop);
if (!JS_GetProperty(cx, obj, "prototype", &prop))
return false;
JSObject* prototype = JSVAL_TO_OBJECT(prop);
return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype);
}
static JSBool
InitAndSealPerfMeasurementClass(JSContext* cx, JSObject* global)
{
// Init the PerfMeasurement class
if (!JS::RegisterPerfMeasurement(cx, global))
return false;
// Seal up Object, Function, and Array and their prototypes. (This single
// object instance is shared amongst everyone who imports the jsperf module.)
if (!SealObjectAndPrototype(cx, global, "Object") ||
!SealObjectAndPrototype(cx, global, "Function") ||
!SealObjectAndPrototype(cx, global, "Array"))
return false;
// Finally, seal the global object, for good measure. (But not recursively;
// this breaks things.)
return JS_FreezeObject(cx, global);
}
NS_IMETHODIMP
Module::Call(nsIXPConnectWrappedNative* wrapper,
JSContext* cx,
JSObject* obj,
uint32_t argc,
jsval* argv,
jsval* vp,
bool* _retval)
{
JSObject* targetObj = nullptr;
mozJSComponentLoader* loader = mozJSComponentLoader::Get();
nsresult rv = loader->FindTargetObject(cx, &targetObj);
NS_ENSURE_SUCCESS(rv, rv);
*_retval = InitAndSealPerfMeasurementClass(cx, targetObj);
return NS_OK;
}
}
}
NS_DEFINE_NAMED_CID(JSPERF_CID);
static const mozilla::Module::CIDEntry kPerfCIDs[] = {
{ &kJSPERF_CID, false, NULL, mozilla::jsperf::ModuleConstructor },
{ NULL }
};
static const mozilla::Module::ContractIDEntry kPerfContracts[] = {
{ JSPERF_CONTRACTID, &kJSPERF_CID },
{ NULL }
};
static const mozilla::Module kPerfModule = {
mozilla::Module::kVersion,
kPerfCIDs,
kPerfContracts
};
NSMODULE_DEFN(jsperf) = &kPerfModule;
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