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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/worker/webworkerclient_proxy.h"
#include "base/command_line.h"
#include "chrome/common/child_process.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/webmessageportchannel_impl.h"
#include "chrome/common/worker_messages.h"
#include "chrome/renderer/webworker_proxy.h"
#include "chrome/worker/worker_thread.h"
#include "chrome/worker/nativewebworker_impl.h"
#include "ipc/ipc_logging.h"
#include "webkit/api/public/WebString.h"
#include "webkit/api/public/WebURL.h"
#include "webkit/api/public/WebWorker.h"
using WebKit::WebMessagePortChannel;
using WebKit::WebMessagePortChannelArray;
using WebKit::WebString;
using WebKit::WebWorker;
using WebKit::WebWorkerClient;
// How long to wait for worker to finish after it's been told to terminate.
#define kMaxTimeForRunawayWorkerMs 3000
static bool UrlIsNativeWorker(const GURL& url) {
// If the renderer was not passed the switch to enable native workers,
// then the URL should be treated as a JavaScript worker.
if (!CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableNativeWebWorkers)) {
return false;
}
// Based on the suffix, decide whether the url should be considered
// a NativeWebWorker (for .nexe) or a WebWorker (for anything else).
const std::string kNativeSuffix(".nexe");
std::string worker_url = url.path();
// Compute the start index of the suffix.
std::string::size_type suffix_index =
worker_url.length() - kNativeSuffix.length();
std::string::size_type pos = worker_url.find(kNativeSuffix, suffix_index);
return (suffix_index == pos);
}
WebWorkerClientProxy::WebWorkerClientProxy(const GURL& url, int route_id)
: url_(url),
route_id_(route_id),
ALLOW_THIS_IN_INITIALIZER_LIST(kill_process_factory_(this)) {
if (UrlIsNativeWorker(url)) {
// Launch a native worker.
impl_ = NativeWebWorkerImpl::create(this);
} else {
// Launch a JavaScript worker.
impl_ = WebWorker::create(this);
}
WorkerThread::current()->AddRoute(route_id_, this);
ChildProcess::current()->AddRefProcess();
}
WebWorkerClientProxy::~WebWorkerClientProxy() {
WorkerThread::current()->RemoveRoute(route_id_);
ChildProcess::current()->ReleaseProcess();
}
void WebWorkerClientProxy::postMessageToWorkerObject(
const WebString& message,
const WebMessagePortChannelArray& channels) {
std::vector<int> message_port_ids(channels.size());
std::vector<int> routing_ids(channels.size());
for (size_t i = 0; i < channels.size(); ++i) {
WebMessagePortChannelImpl* webchannel =
static_cast<WebMessagePortChannelImpl*>(channels[i]);
message_port_ids[i] = webchannel->message_port_id();
webchannel->QueueMessages();
DCHECK(message_port_ids[i] != MSG_ROUTING_NONE);
routing_ids[i] = MSG_ROUTING_NONE;
}
Send(new WorkerMsg_PostMessage(
route_id_, message, message_port_ids, routing_ids));
}
void WebWorkerClientProxy::postExceptionToWorkerObject(
const WebString& error_message,
int line_number,
const WebString& source_url) {
Send(new WorkerHostMsg_PostExceptionToWorkerObject(
route_id_, error_message, line_number, source_url));
}
void WebWorkerClientProxy::postConsoleMessageToWorkerObject(
int destination,
int source,
int type,
int level,
const WebString& message,
int line_number,
const WebString& source_url) {
WorkerHostMsg_PostConsoleMessageToWorkerObject_Params params;
params.destination_identifier = destination;
params.source_identifier = source;
params.message_type = type;
params.message_level = level;
params.message = message;
params.line_number = line_number;
params.source_url = source_url;
Send(new WorkerHostMsg_PostConsoleMessageToWorkerObject(route_id_, params));
}
void WebWorkerClientProxy::confirmMessageFromWorkerObject(
bool has_pending_activity) {
Send(new WorkerHostMsg_ConfirmMessageFromWorkerObject(
route_id_, has_pending_activity));
}
void WebWorkerClientProxy::reportPendingActivity(bool has_pending_activity) {
Send(new WorkerHostMsg_ReportPendingActivity(
route_id_, has_pending_activity));
}
void WebWorkerClientProxy::workerContextDestroyed() {
Send(new WorkerHostMsg_WorkerContextDestroyed(route_id_));
delete this;
}
WebKit::WebWorker* WebWorkerClientProxy::createWorker(
WebKit::WebWorkerClient* client) {
return new WebWorkerProxy(client, WorkerThread::current(), 0);
}
bool WebWorkerClientProxy::Send(IPC::Message* message) {
return WorkerThread::current()->Send(message);
}
void WebWorkerClientProxy::OnMessageReceived(const IPC::Message& message) {
if (!impl_)
return;
IPC_BEGIN_MESSAGE_MAP(WebWorkerClientProxy, message)
IPC_MESSAGE_FORWARD(WorkerMsg_StartWorkerContext, impl_,
WebWorker::startWorkerContext)
IPC_MESSAGE_HANDLER(WorkerMsg_TerminateWorkerContext,
OnTerminateWorkerContext)
IPC_MESSAGE_HANDLER(WorkerMsg_PostMessage, OnPostMessage)
IPC_MESSAGE_FORWARD(WorkerMsg_WorkerObjectDestroyed, impl_,
WebWorker::workerObjectDestroyed)
IPC_END_MESSAGE_MAP()
}
void WebWorkerClientProxy::OnTerminateWorkerContext() {
impl_->terminateWorkerContext();
// Avoid a worker doing a while(1) from never exiting.
if (CommandLine::ForCurrentProcess()->HasSwitch(
switches::kWebWorkerShareProcesses)) {
// Can't kill the process since there could be workers from other
// renderer process.
NOTIMPLEMENTED();
return;
}
// This shuts down the process cleanly from the perspective of the browser
// process, and avoids the crashed worker infobar from appearing to the new
// page.
MessageLoop::current()->PostDelayedTask(FROM_HERE,
kill_process_factory_.NewRunnableMethod(
&WebWorkerClientProxy::workerContextDestroyed),
kMaxTimeForRunawayWorkerMs);
}
void WebWorkerClientProxy::OnPostMessage(
const string16& message,
const std::vector<int>& sent_message_port_ids,
const std::vector<int>& new_routing_ids) {
WebMessagePortChannelArray channels(sent_message_port_ids.size());
for (size_t i = 0; i < sent_message_port_ids.size(); i++) {
channels[i] = new WebMessagePortChannelImpl(
new_routing_ids[i], sent_message_port_ids[i]);
}
impl_->postMessageToWorkerContext(message, channels);
}
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