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// Copyright 2013 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 "content/browser/service_worker/embedded_worker_instance.h"
#include "content/browser/service_worker/embedded_worker_registry.h"
#include "content/common/service_worker/embedded_worker_messages.h"
#include "ipc/ipc_message.h"
#include "url/gurl.h"
namespace content {
namespace {
// Functor to sort by the .second element of a struct.
struct SecondGreater {
template <typename Value>
bool operator()(const Value& lhs, const Value& rhs) {
return lhs.second > rhs.second;
}
};
} // namespace
EmbeddedWorkerInstance::~EmbeddedWorkerInstance() {
registry_->RemoveWorker(process_id_, embedded_worker_id_);
}
void EmbeddedWorkerInstance::Start(int64 service_worker_version_id,
const GURL& scope,
const GURL& script_url,
const std::vector<int>& possible_process_ids,
const StatusCallback& callback) {
DCHECK(status_ == STOPPED);
status_ = STARTING;
std::vector<int> ordered_process_ids = SortProcesses(possible_process_ids);
registry_->StartWorker(ordered_process_ids,
embedded_worker_id_,
service_worker_version_id,
scope,
script_url,
callback);
}
ServiceWorkerStatusCode EmbeddedWorkerInstance::Stop() {
DCHECK(status_ == STARTING || status_ == RUNNING);
ServiceWorkerStatusCode status =
registry_->StopWorker(process_id_, embedded_worker_id_);
if (status == SERVICE_WORKER_OK)
status_ = STOPPING;
return status;
}
ServiceWorkerStatusCode EmbeddedWorkerInstance::SendMessage(
const IPC::Message& message) {
DCHECK(status_ == RUNNING);
return registry_->Send(process_id_,
new EmbeddedWorkerContextMsg_MessageToWorker(
thread_id_, embedded_worker_id_, message));
}
void EmbeddedWorkerInstance::AddProcessReference(int process_id) {
ProcessRefMap::iterator found = process_refs_.find(process_id);
if (found == process_refs_.end())
found = process_refs_.insert(std::make_pair(process_id, 0)).first;
++found->second;
}
void EmbeddedWorkerInstance::ReleaseProcessReference(int process_id) {
ProcessRefMap::iterator found = process_refs_.find(process_id);
if (found == process_refs_.end()) {
NOTREACHED() << "Releasing unknown process ref " << process_id;
return;
}
if (--found->second == 0)
process_refs_.erase(found);
}
EmbeddedWorkerInstance::EmbeddedWorkerInstance(EmbeddedWorkerRegistry* registry,
int embedded_worker_id)
: registry_(registry),
embedded_worker_id_(embedded_worker_id),
status_(STOPPED),
process_id_(-1),
thread_id_(-1),
worker_devtools_agent_route_id_(MSG_ROUTING_NONE) {
}
void EmbeddedWorkerInstance::RecordProcessId(
int process_id,
ServiceWorkerStatusCode status,
int worker_devtools_agent_route_id) {
DCHECK_EQ(process_id_, -1);
DCHECK_EQ(worker_devtools_agent_route_id_, MSG_ROUTING_NONE);
if (status == SERVICE_WORKER_OK) {
process_id_ = process_id;
worker_devtools_agent_route_id_ = worker_devtools_agent_route_id;
} else {
status_ = STOPPED;
}
}
void EmbeddedWorkerInstance::OnScriptLoaded() {
// TODO(horo): Implement this.
}
void EmbeddedWorkerInstance::OnScriptLoadFailed() {
}
void EmbeddedWorkerInstance::OnStarted(int thread_id) {
// Stop is requested before OnStarted is sent back from the worker.
if (status_ == STOPPING)
return;
DCHECK(status_ == STARTING);
status_ = RUNNING;
thread_id_ = thread_id;
FOR_EACH_OBSERVER(Listener, listener_list_, OnStarted());
}
void EmbeddedWorkerInstance::OnStopped() {
status_ = STOPPED;
process_id_ = -1;
thread_id_ = -1;
worker_devtools_agent_route_id_ = MSG_ROUTING_NONE;
FOR_EACH_OBSERVER(Listener, listener_list_, OnStopped());
}
bool EmbeddedWorkerInstance::OnMessageReceived(const IPC::Message& message) {
ListenerList::Iterator it(listener_list_);
while (Listener* listener = it.GetNext()) {
if (listener->OnMessageReceived(message))
return true;
}
return false;
}
void EmbeddedWorkerInstance::OnReportException(
const base::string16& error_message,
int line_number,
int column_number,
const GURL& source_url) {
FOR_EACH_OBSERVER(
Listener,
listener_list_,
OnReportException(error_message, line_number, column_number, source_url));
}
void EmbeddedWorkerInstance::OnReportConsoleMessage(
int source_identifier,
int message_level,
const base::string16& message,
int line_number,
const GURL& source_url) {
FOR_EACH_OBSERVER(
Listener,
listener_list_,
OnReportConsoleMessage(
source_identifier, message_level, message, line_number, source_url));
}
void EmbeddedWorkerInstance::AddListener(Listener* listener) {
listener_list_.AddObserver(listener);
}
void EmbeddedWorkerInstance::RemoveListener(Listener* listener) {
listener_list_.RemoveObserver(listener);
}
std::vector<int> EmbeddedWorkerInstance::SortProcesses(
const std::vector<int>& possible_process_ids) const {
// Add the |possible_process_ids| to the existing process_refs_ since each one
// is likely to take a reference once the SW starts up.
ProcessRefMap refs_with_new_ids = process_refs_;
for (std::vector<int>::const_iterator it = possible_process_ids.begin();
it != possible_process_ids.end();
++it) {
refs_with_new_ids[*it]++;
}
std::vector<std::pair<int, int> > counted(refs_with_new_ids.begin(),
refs_with_new_ids.end());
// Sort descending by the reference count.
std::sort(counted.begin(), counted.end(), SecondGreater());
std::vector<int> result(counted.size());
for (size_t i = 0; i < counted.size(); ++i)
result[i] = counted[i].first;
return result;
}
} // namespace content
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