149 lines
4.4 KiB
C++
149 lines
4.4 KiB
C++
/**
|
|
* @file llvfsthread.h
|
|
* @brief LLVFSThread definition
|
|
*
|
|
* $LicenseInfo:firstyear=2001&license=viewergpl$
|
|
*
|
|
* Copyright (c) 2001-2009, Linden Research, Inc.
|
|
*
|
|
* Second Life Viewer Source Code
|
|
* The source code in this file ("Source Code") is provided by Linden Lab
|
|
* to you under the terms of the GNU General Public License, version 2.0
|
|
* ("GPL"), unless you have obtained a separate licensing agreement
|
|
* ("Other License"), formally executed by you and Linden Lab. Terms of
|
|
* the GPL can be found in doc/GPL-license.txt in this distribution, or
|
|
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
|
|
*
|
|
* There are special exceptions to the terms and conditions of the GPL as
|
|
* it is applied to this Source Code. View the full text of the exception
|
|
* in the file doc/FLOSS-exception.txt in this software distribution, or
|
|
* online at
|
|
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
|
|
*
|
|
* By copying, modifying or distributing this software, you acknowledge
|
|
* that you have read and understood your obligations described above,
|
|
* and agree to abide by those obligations.
|
|
*
|
|
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
|
|
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
|
|
* COMPLETENESS OR PERFORMANCE.
|
|
* $/LicenseInfo$
|
|
*/
|
|
|
|
#ifndef LL_LLVFSTHREAD_H
|
|
#define LL_LLVFSTHREAD_H
|
|
|
|
#include <queue>
|
|
#include <string>
|
|
#include <map>
|
|
#include <set>
|
|
|
|
#include "llapr.h"
|
|
|
|
#include "llqueuedthread.h"
|
|
|
|
#include "llvfs.h"
|
|
|
|
//============================================================================
|
|
|
|
class LLVFSThread : public LLQueuedThread
|
|
{
|
|
//------------------------------------------------------------------------
|
|
public:
|
|
enum operation_t {
|
|
FILE_READ,
|
|
FILE_WRITE,
|
|
FILE_RENAME
|
|
};
|
|
|
|
//------------------------------------------------------------------------
|
|
public:
|
|
|
|
class Request : public QueuedRequest
|
|
{
|
|
protected:
|
|
~Request() {}; // use deleteRequest()
|
|
|
|
public:
|
|
Request(handle_t handle, U32 priority, U32 flags,
|
|
operation_t op, LLVFS* vfs,
|
|
const LLUUID &file_id, const LLAssetType::EType file_type,
|
|
U8* buffer, S32 offset, S32 numbytes);
|
|
|
|
S32 getBytesRead()
|
|
{
|
|
return mBytesRead;
|
|
}
|
|
S32 getOperation()
|
|
{
|
|
return mOperation;
|
|
}
|
|
U8* getBuffer()
|
|
{
|
|
return mBuffer;
|
|
}
|
|
LLVFS* getVFS()
|
|
{
|
|
return mVFS;
|
|
}
|
|
std::string getFilename()
|
|
{
|
|
std::string tstring;
|
|
mFileID.toString(tstring);
|
|
return tstring;
|
|
}
|
|
|
|
/*virtual*/ bool processRequest();
|
|
/*virtual*/ void finishRequest(bool completed);
|
|
/*virtual*/ void deleteRequest();
|
|
|
|
private:
|
|
operation_t mOperation;
|
|
|
|
LLVFS* mVFS;
|
|
LLUUID mFileID;
|
|
LLAssetType::EType mFileType;
|
|
|
|
U8* mBuffer; // dest for reads, source for writes, new UUID for rename
|
|
S32 mOffset; // offset into file, -1 = append (WRITE only)
|
|
S32 mBytes; // bytes to read from file, -1 = all (new mFileType for rename)
|
|
S32 mBytesRead; // bytes read from file
|
|
};
|
|
|
|
//------------------------------------------------------------------------
|
|
public:
|
|
static std::string sDataPath;
|
|
static LLVFSThread* sLocal; // Default worker thread
|
|
|
|
public:
|
|
LLVFSThread(bool threaded = TRUE);
|
|
~LLVFSThread();
|
|
|
|
// Return a Request handle
|
|
handle_t read(LLVFS* vfs, const LLUUID &file_id, const LLAssetType::EType file_type, /* Flawfinder: ignore */
|
|
U8* buffer, S32 offset, S32 numbytes, U32 pri=PRIORITY_NORMAL, U32 flags = 0);
|
|
handle_t write(LLVFS* vfs, const LLUUID &file_id, const LLAssetType::EType file_type,
|
|
U8* buffer, S32 offset, S32 numbytes, U32 flags);
|
|
// SJB: rename seems to have issues, especially when threaded
|
|
// handle_t rename(LLVFS* vfs, const LLUUID &file_id, const LLAssetType::EType file_type,
|
|
// const LLUUID &new_id, const LLAssetType::EType new_type, U32 flags);
|
|
// Return number of bytes read
|
|
S32 readImmediate(LLVFS* vfs, const LLUUID &file_id, const LLAssetType::EType file_type,
|
|
U8* buffer, S32 offset, S32 numbytes);
|
|
S32 writeImmediate(LLVFS* vfs, const LLUUID &file_id, const LLAssetType::EType file_type,
|
|
U8* buffer, S32 offset, S32 numbytes);
|
|
|
|
/*virtual*/ bool processRequest(QueuedRequest* req);
|
|
|
|
public:
|
|
static void initClass(bool local_is_threaded = TRUE); // Setup sLocal
|
|
static S32 updateClass(U32 ms_elapsed);
|
|
static void cleanupClass(); // Delete sLocal
|
|
static void setDataPath(const std::string& path) { sDataPath = path; }
|
|
};
|
|
|
|
//============================================================================
|
|
|
|
|
|
#endif // LL_LLVFSTHREAD_H
|