gecko/dom/system/gonk/SystemWorkerManager.cpp

380 lines
10 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Telephony.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "SystemWorkerManager.h"
#include "nsIObserverService.h"
#include "nsIJSContextStack.h"
#include "nsIRadioInterfaceLayer.h"
#include "nsIWifi.h"
#include "nsIWorkerHolder.h"
#include "nsIXPConnect.h"
#include "jstypedarray.h"
#include "mozilla/dom/workers/Workers.h"
#include "mozilla/ipc/Ril.h"
#include "nsContentUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "nsRadioInterfaceLayer.h"
#include "WifiWorker.h"
USING_WORKERS_NAMESPACE
using namespace mozilla::dom::gonk;
using namespace mozilla::ipc;
namespace {
NS_DEFINE_CID(kRadioInterfaceLayerCID, NS_RADIOINTERFACELAYER_CID);
NS_DEFINE_CID(kWifiWorkerCID, NS_WIFIWORKER_CID);
// Doesn't carry a reference, we're owned by services.
SystemWorkerManager *gInstance = nsnull;
class ConnectWorkerToRIL : public WorkerTask
{
public:
virtual bool RunTask(JSContext *aCx);
};
JSBool
PostToRIL(JSContext *cx, unsigned argc, jsval *vp)
{
NS_ASSERTION(!NS_IsMainThread(), "Expecting to be on the worker thread");
if (argc != 1) {
JS_ReportError(cx, "Expecting a single argument with the RIL message");
return false;
}
jsval v = JS_ARGV(cx, vp)[0];
nsAutoPtr<RilRawData> rm(new RilRawData());
JSAutoByteString abs;
void *data;
size_t size;
if (JSVAL_IS_STRING(v)) {
JSString *str = JSVAL_TO_STRING(v);
if (!abs.encode(cx, str)) {
return false;
}
size = JS_GetStringLength(str);
data = abs.ptr();
} else if (!JSVAL_IS_PRIMITIVE(v)) {
JSObject *obj = JSVAL_TO_OBJECT(v);
if (!js_IsTypedArray(obj)) {
JS_ReportError(cx, "Object passed in wasn't a typed array");
return false;
}
uint32_t type = JS_GetTypedArrayType(obj);
if (type != js::TypedArray::TYPE_INT8 &&
type != js::TypedArray::TYPE_UINT8 &&
type != js::TypedArray::TYPE_UINT8_CLAMPED) {
JS_ReportError(cx, "Typed array data is not octets");
return false;
}
size = JS_GetTypedArrayByteLength(obj);
data = JS_GetTypedArrayData(obj);
} else {
JS_ReportError(cx,
"Incorrect argument. Expecting a string or a typed array");
return false;
}
if (size > RilRawData::MAX_DATA_SIZE) {
JS_ReportError(cx, "Passed-in data is too large");
return false;
}
rm->mSize = size;
memcpy(rm->mData, data, size);
RilRawData *tosend = rm.forget();
JS_ALWAYS_TRUE(SendRilRawData(&tosend));
return true;
}
bool
ConnectWorkerToRIL::RunTask(JSContext *aCx)
{
// Set up the postRILMessage on the function for worker -> RIL thread
// communication.
NS_ASSERTION(!NS_IsMainThread(), "Expecting to be on the worker thread");
NS_ASSERTION(!JS_IsRunning(aCx), "Are we being called somehow?");
JSObject *workerGlobal = JS_GetGlobalObject(aCx);
return !!JS_DefineFunction(aCx, workerGlobal, "postRILMessage", PostToRIL, 1,
0);
}
class RILReceiver : public RilConsumer
{
class DispatchRILEvent : public WorkerTask
{
public:
DispatchRILEvent(RilRawData *aMessage)
: mMessage(aMessage)
{ }
virtual bool RunTask(JSContext *aCx);
private:
nsAutoPtr<RilRawData> mMessage;
};
public:
RILReceiver(WorkerCrossThreadDispatcher *aDispatcher)
: mDispatcher(aDispatcher)
{ }
virtual void MessageReceived(RilRawData *aMessage) {
nsRefPtr<DispatchRILEvent> dre(new DispatchRILEvent(aMessage));
mDispatcher->PostTask(dre);
}
private:
nsRefPtr<WorkerCrossThreadDispatcher> mDispatcher;
};
bool
RILReceiver::DispatchRILEvent::RunTask(JSContext *aCx)
{
JSObject *obj = JS_GetGlobalObject(aCx);
JSObject *array =
js_CreateTypedArray(aCx, js::TypedArray::TYPE_UINT8, mMessage->mSize);
if (!array) {
return false;
}
memcpy(JS_GetTypedArrayData(array), mMessage->mData, mMessage->mSize);
jsval argv[] = { OBJECT_TO_JSVAL(array) };
return JS_CallFunctionName(aCx, obj, "onRILMessage", NS_ARRAY_LENGTH(argv),
argv, argv);
}
} // anonymous namespace
SystemWorkerManager::SystemWorkerManager()
: mShutdown(false)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!gInstance, "There should only be one instance!");
}
SystemWorkerManager::~SystemWorkerManager()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!gInstance || gInstance == this,
"There should only be one instance!");
gInstance = nsnull;
}
nsresult
SystemWorkerManager::Init()
{
NS_ASSERTION(NS_IsMainThread(), "We can only initialize on the main thread");
NS_ASSERTION(!mShutdown, "Already shutdown!");
JSContext *cx;
nsresult rv = nsContentUtils::ThreadJSContextStack()->GetSafeJSContext(&cx);
NS_ENSURE_SUCCESS(rv, rv);
nsCxPusher pusher;
if (!cx || !pusher.Push(cx, false)) {
return NS_ERROR_FAILURE;
}
rv = InitRIL(cx);
NS_ENSURE_SUCCESS(rv, rv);
rv = InitWifi(cx);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIObserverService> obs =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
if (!obs) {
NS_WARNING("Failed to get observer service!");
return NS_ERROR_FAILURE;
}
rv = obs->AddObserver(this, WORKERS_SHUTDOWN_TOPIC, false);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
void
SystemWorkerManager::Shutdown()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
mShutdown = true;
StopRil();
mRILWorker = nsnull;
nsCOMPtr<nsIWifi> wifi(do_QueryInterface(mWifiWorker));
if (wifi) {
wifi->Shutdown();
wifi = nsnull;
}
mWifiWorker = nsnull;
nsCOMPtr<nsIObserverService> obs =
do_GetService(NS_OBSERVERSERVICE_CONTRACTID);
if (obs) {
obs->RemoveObserver(this, WORKERS_SHUTDOWN_TOPIC);
}
}
// static
already_AddRefed<SystemWorkerManager>
SystemWorkerManager::FactoryCreate()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<SystemWorkerManager> instance(gInstance);
if (!instance) {
instance = new SystemWorkerManager();
if (NS_FAILED(instance->Init())) {
instance->Shutdown();
return nsnull;
}
gInstance = instance;
}
return instance.forget();
}
// static
nsIInterfaceRequestor*
SystemWorkerManager::GetInterfaceRequestor()
{
return gInstance;
}
NS_IMETHODIMP
SystemWorkerManager::GetInterface(const nsIID &aIID, void **aResult)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (aIID.Equals(NS_GET_IID(nsIRadioInterfaceLayer))) {
return CallQueryInterface(mRILWorker,
reinterpret_cast<nsIRadioInterfaceLayer**>(aResult));
}
if (aIID.Equals(NS_GET_IID(nsIWifi))) {
return CallQueryInterface(mWifiWorker,
reinterpret_cast<nsIWifi**>(aResult));
}
NS_WARNING("Got nothing for the requested IID!");
return NS_ERROR_NO_INTERFACE;
}
nsresult
SystemWorkerManager::InitRIL(JSContext *cx)
{
// We're keeping as much of this implementation as possible in JS, so the real
// worker lives in RadioInterfaceLayer.js. All we do here is hold it alive and
// hook it up to the RIL thread.
nsCOMPtr<nsIWorkerHolder> worker = do_CreateInstance(kRadioInterfaceLayerCID);
NS_ENSURE_TRUE(worker, NS_ERROR_FAILURE);
jsval workerval;
nsresult rv = worker->GetWorker(&workerval);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(!JSVAL_IS_PRIMITIVE(workerval), NS_ERROR_UNEXPECTED);
JSAutoRequest ar(cx);
JSAutoEnterCompartment ac;
if (!ac.enter(cx, JSVAL_TO_OBJECT(workerval))) {
return NS_ERROR_OUT_OF_MEMORY;
}
WorkerCrossThreadDispatcher *wctd =
GetWorkerCrossThreadDispatcher(cx, workerval);
if (!wctd) {
return NS_ERROR_FAILURE;
}
nsRefPtr<ConnectWorkerToRIL> connection = new ConnectWorkerToRIL();
if (!wctd->PostTask(connection)) {
return NS_ERROR_UNEXPECTED;
}
// Now that we're set up, connect ourselves to the RIL thread.
mozilla::RefPtr<RILReceiver> receiver = new RILReceiver(wctd);
StartRil(receiver);
mRILWorker = worker;
return NS_OK;
}
nsresult
SystemWorkerManager::InitWifi(JSContext *cx)
{
nsCOMPtr<nsIWorkerHolder> worker = do_CreateInstance(kWifiWorkerCID);
NS_ENSURE_TRUE(worker, NS_ERROR_FAILURE);
mWifiWorker = worker;
return NS_OK;
}
NS_IMPL_ISUPPORTS2(SystemWorkerManager, nsIObserver, nsIInterfaceRequestor)
NS_IMETHODIMP
SystemWorkerManager::Observe(nsISupports *aSubject, const char *aTopic,
const PRUnichar *aData)
{
if (!strcmp(aTopic, WORKERS_SHUTDOWN_TOPIC)) {
Shutdown();
}
return NS_OK;
}