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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 "chrome/browser/search/instant_io_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/resource_context.h"
#include "content/public/browser/resource_request_info.h"
#include "net/url_request/url_request.h"
#include "url/gurl.h"
using content::BrowserThread;
namespace {
// Retrieves the Instant data from the |context|'s named user-data.
InstantIOContext* GetDataForResourceContext(
content::ResourceContext* context) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
return base::UserDataAdapter<InstantIOContext>::Get(
context, InstantIOContext::kInstantIOContextKeyName);
}
InstantIOContext* GetDataForRequest(const net::URLRequest* request) {
const content::ResourceRequestInfo* info =
content::ResourceRequestInfo::ForRequest(request);
if (!info)
return NULL;
return GetDataForResourceContext(info->GetContext());
}
} // namespace
const char InstantIOContext::kInstantIOContextKeyName[] = "instant_io_context";
InstantIOContext::InstantIOContext() {
// The InstantIOContext is created on the UI thread but is accessed
// on the IO thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
InstantIOContext::~InstantIOContext() {
}
// static
void InstantIOContext::SetUserDataOnIO(
content::ResourceContext* resource_context,
scoped_refptr<InstantIOContext> instant_io_context) {
resource_context->SetUserData(
InstantIOContext::kInstantIOContextKeyName,
new base::UserDataAdapter<InstantIOContext>(instant_io_context.get()));
}
// static
void InstantIOContext::AddInstantProcessOnIO(
scoped_refptr<InstantIOContext> instant_io_context,
int process_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
instant_io_context->process_ids_.insert(process_id);
}
// static
void InstantIOContext::RemoveInstantProcessOnIO(
scoped_refptr<InstantIOContext> instant_io_context, int process_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
instant_io_context->process_ids_.erase(process_id);
}
// static
void InstantIOContext::ClearInstantProcessesOnIO(
scoped_refptr<InstantIOContext> instant_io_context) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
instant_io_context->process_ids_.clear();
}
// static
bool InstantIOContext::ShouldServiceRequest(const net::URLRequest* request) {
const content::ResourceRequestInfo* info =
content::ResourceRequestInfo::ForRequest(request);
if (!info)
return false;
InstantIOContext* instant_io_context = GetDataForRequest(request);
if (!instant_io_context)
return false;
int process_id = -1;
int render_frame_id = -1;
if (info->GetAssociatedRenderFrame(&process_id, &render_frame_id) &&
instant_io_context->IsInstantProcess(process_id))
return true;
return false;
}
bool InstantIOContext::IsInstantProcess(int process_id) const {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
return process_ids_.find(process_id) != process_ids_.end();
}
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