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/**
* @file llvfsthread.h
* @brief LLVFSThread definition
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#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()
{
char tbuf[40];
mFileID.toString(tbuf);
return std::string(tbuf);
}
/*virtual*/ void finishRequest();
/*virtual*/ void deleteRequest();
bool processIO();
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 void setDataPath(const std::string& path) { sDataPath = path; }
public:
LLVFSThread(bool threaded = TRUE, bool runalways = TRUE);
~LLVFSThread();
// Return a Request handle
handle_t read(LLVFS* vfs, const LLUUID &file_id, const LLAssetType::EType file_type,
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);
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);
static void initClass(bool local_is_threaded = TRUE, bool run_always = TRUE); // Setup sLocal
static S32 updateClass(U32 ms_elapsed);
static void cleanupClass(); // Delete sLocal
public:
static LLVFSThread* sLocal; // Default worker thread
};
//============================================================================
#endif // LL_LLVFSTHREAD_H
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