AsyncFileStream.cpp [plain text]
#include "config.h"
#include "AsyncFileStream.h"
#include "Blob.h"
#include "FileStream.h"
#include "FileStreamClient.h"
#include "FileThread.h"
#include <wtf/MainThread.h>
#include <wtf/text/WTFString.h>
#if PLATFORM(IOS)
#include "WebCoreThread.h"
#endif
namespace WebCore {
static PassRefPtr<FileThread> createFileThread()
{
RefPtr<FileThread> thread = FileThread::create();
if (!thread->start())
return 0;
return thread.release();
}
static FileThread* fileThread()
{
ASSERT(isMainThread());
static FileThread* thread = createFileThread().leakRef();
return thread;
}
inline AsyncFileStream::AsyncFileStream(FileStreamClient* client)
: m_stream(FileStream::create())
, m_client(client)
{
ASSERT(isMainThread());
}
PassRefPtr<AsyncFileStream> AsyncFileStream::create(FileStreamClient* client)
{
RefPtr<AsyncFileStream> proxy = adoptRef(new AsyncFileStream(client));
proxy->ref();
AsyncFileStream* proxyPtr = proxy.get();
fileThread()->postTask({ proxyPtr, [=] {
if (!proxyPtr->client())
return;
proxyPtr->m_stream->start();
callOnMainThread([proxyPtr] {
if (proxyPtr->client())
proxyPtr->client()->didStart();
});
} });
return proxy.release();
}
AsyncFileStream::~AsyncFileStream()
{
}
void AsyncFileStream::stop()
{
setClient(0);
fileThread()->unscheduleTasks(m_stream.get());
fileThread()->postTask({ this, [this] {
m_stream->stop();
callOnMainThread([this] {
ASSERT(hasOneRef());
deref();
});
} });
}
void AsyncFileStream::getSize(const String& path, double expectedModificationTime)
{
String pathCopy = path.isolatedCopy();
fileThread()->postTask({ this, [this, pathCopy, expectedModificationTime] {
long long size = m_stream->getSize(pathCopy, expectedModificationTime);
callOnMainThread([this, size] {
if (client())
client()->didGetSize(size);
});
} });
}
void AsyncFileStream::openForRead(const String& path, long long offset, long long length)
{
String pathCopy = path.isolatedCopy();
fileThread()->postTask({ this, [this, pathCopy, offset, length] {
bool success = m_stream->openForRead(pathCopy, offset, length);
callOnMainThread([this, success] {
if (client())
client()->didOpen(success);
});
} });
}
void AsyncFileStream::openForWrite(const String& path)
{
String pathCopy = path.isolatedCopy();
fileThread()->postTask({ this, [this, pathCopy] {
bool success = m_stream->openForWrite(pathCopy);
callOnMainThread([this, success] {
if (client())
client()->didOpen(success);
});
} });
}
void AsyncFileStream::close()
{
fileThread()->postTask({this, [this] {
m_stream->close();
} });
}
void AsyncFileStream::read(char* buffer, int length)
{
fileThread()->postTask({ this, [this, buffer, length] {
int bytesRead = m_stream->read(buffer, length);
callOnMainThread([this, bytesRead] {
if (client())
client()->didRead(bytesRead);
});
} });
}
void AsyncFileStream::write(const URL& blobURL, long long position, int length)
{
URL blobURLCopy = blobURL.copy();
fileThread()->postTask({ this, [this, blobURLCopy, position, length] {
int bytesWritten = m_stream->write(blobURLCopy, position, length);
callOnMainThread([this, bytesWritten] {
if (client())
client()->didWrite(bytesWritten);
});
} });
}
void AsyncFileStream::truncate(long long position)
{
fileThread()->postTask({ this, [this, position] {
bool success = m_stream->truncate(position);
callOnMainThread([this, success] {
if (client())
client()->didTruncate(success);
});
} });
}
}