mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
|
|
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
||
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
|
|
||
|
|
#ifndef EncodedBufferCache_h_
|
||
|
|
#define EncodedBufferCache_h_
|
||
|
|
|
||
|
|
#include "nsTArray.h"
|
||
|
|
#include "mozilla/ReentrantMonitor.h"
|
||
|
|
#include "prio.h"
|
||
|
|
#include "nsDOMFile.h"
|
||
|
|
|
||
|
|
namespace mozilla {
|
||
|
|
|
||
|
|
class ReentrantMonitor;
|
||
|
|
/**
|
||
|
|
* Data is moved into a temporary file when it grows beyond
|
||
|
|
* the maximal size passed in the Init function.
|
||
|
|
* The AppendBuffer and ExtractBlob methods are thread-safe and can be called on
|
||
|
|
* different threads at the same time.
|
||
|
|
*/
|
||
|
|
class EncodedBufferCache
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
EncodedBufferCache(uint32_t aMaxMemoryStorage)
|
||
|
|
: mFD(nullptr),
|
||
|
|
mReentrantMonitor("EncodedBufferCache.Data.Monitor"),
|
||
|
|
mDataSize(0),
|
||
|
|
mMaxMemoryStorage(aMaxMemoryStorage),
|
||
|
|
mTempFileEnabled(false) { }
|
||
|
|
~EncodedBufferCache()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
// Append buffers in cache, check if the queue is too large then switch to write buffer to file system
|
||
|
|
// aBuf will append to mEncodedBuffers or temporary File, aBuf also be cleared
|
||
|
|
void AppendBuffer(nsTArray<uint8_t> & aBuf);
|
||
|
|
// Read all buffer from memory or file System, also Remove the temporary file or clean the buffers in memory.
|
||
|
|
already_AddRefed<nsIDOMBlob> ExtractBlob(const nsAString &aContentType);
|
||
|
|
|
||
|
|
private:
|
||
|
|
//array for storing the encoded data.
|
||
|
|
nsTArray<nsTArray<uint8_t> > mEncodedBuffers;
|
||
|
|
// File handle for the temporary file
|
||
|
|
PRFileDesc* mFD;
|
||
|
|
// Used to protect the mEncodedBuffer for avoiding AppendBuffer/Consume on different thread at the same time.
|
||
|
|
ReentrantMonitor mReentrantMonitor;
|
||
|
|
// the current buffer size can be read
|
||
|
|
uint64_t mDataSize;
|
||
|
|
// The maximal buffer allowed in memory
|
||
|
|
uint32_t mMaxMemoryStorage;
|
||
|
|
// indicate the buffer is stored on temporary file or not
|
||
|
|
bool mTempFileEnabled;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace mozilla
|
||
|
|
|
||
|
|
#endif
|