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/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "WebCache.h"
#include "WebRequestContext.h"
#include "WebUrlLoaderClient.h"
namespace android {
WebCache* WebCache::s_instance = 0;
void WebCache::clear()
{
base::Thread* thread = WebUrlLoaderClient::ioThread();
if (thread)
thread->message_loop()->PostTask(FROM_HERE, NewRunnableMethod(getInstance(), &WebCache::doClear));
}
WebCache::WebCache()
: m_doomAllEntriesCallback(this, &WebCache::doomAllEntries)
, m_doneCallback(this, &WebCache::done)
, m_isClearInProgress(false)
{
}
WebCache* WebCache::getInstance()
{
if (!s_instance) {
s_instance = new WebCache();
s_instance->AddRef();
}
return s_instance;
}
void WebCache::doClear()
{
if (m_isClearInProgress)
return;
m_isClearInProgress = true;
URLRequestContext* context = WebRequestContext::GetAndroidContext();
net::HttpTransactionFactory* factory = context->http_transaction_factory();
int code = factory->GetCache()->GetBackend(&m_cacheBackend, &m_doomAllEntriesCallback);
// Code ERR_IO_PENDING indicates that the operation is still in progress and
// the supplied callback will be invoked when it completes.
if (code == net::ERR_IO_PENDING)
return;
else if (code != OK) {
m_isClearInProgress = false;
return;
}
doomAllEntries(0 /*unused*/);
}
void WebCache::doomAllEntries(int)
{
if (!m_cacheBackend) {
m_isClearInProgress = false;
return;
}
int code = m_cacheBackend->DoomAllEntries(&m_doneCallback);
// Code ERR_IO_PENDING indicates that the operation is still in progress and
// the supplied callback will be invoked when it completes.
if (code == net::ERR_IO_PENDING)
return;
else if (code != OK) {
m_isClearInProgress = false;
return;
}
done(0 /*unused*/);
}
void WebCache::done(int)
{
m_isClearInProgress = false;
}
} // namespace android
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