BazisLib::Network::MultiThreaded::FileChunkDatabase Class Reference

Stores information about downloaded portions of a file. More...

#include <mtdl.h>

Collaboration diagram for BazisLib::Network::MultiThreaded::FileChunkDatabase:

[legend]

List of all members.

Classes
class	PendingChunk
Public Member Functions
	FileChunkDatabase (ULONGLONG FileSize)
bool	OnFileChunkDownloaded (unsigned ChunkID, ULONGLONG Size)
void	OnChunkDownloadStopped (unsigned ChunkID)
bool	GetRangeToDownload (ULONGLONG *pOffset, ULONGLONG *pEndOffset, unsigned *pChunkID)
	Returns false ONLY if no more chunks are left to download.
ULONGLONG	GetChunkEndOffset (unsigned ChunkID)
bool	DownloadComplete ()
bool	SaveToFileInNativeFormat (ManagedPointer< AIFile > file)
bool	LoadFromFileInNativeFormat (ManagedPointer< AIFile > file)
bool	Valid ()
void	Reset (ULONGLONG FileSize)
void	ResumeFile (ULONGLONG FileSize, ULONGLONG DownloadedSize)
ULONGLONG	GetAlreadyDownloadedSize ()
	Returns the amount of data already downloaded.
bool	CheckIntegrity ()
std::vector< PendingChunk >	ExtractSortedPendingChunkList ()
std::vector< PendingChunk >	ExtractSortedDoneChunkList ()
Private Types
enum	{ MIN_CHUNK_SIZE_TO_RESUME = 32768 }
Private Attributes
RWLock	m_ChunkListLock
SingleMallocVector< PendingChunk >	m_PendingChunks

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Detailed Description

Stores information about downloaded portions of a file.

Remarks:

This class is completely thread-safe.

Attention:

The chunks are never deleted or embedded with others. That way, a thread, that loads a chunk, can always use its number to reference it.

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Member Enumeration Documentation

anonymous enum [private]

Enumerator:

MIN_CHUNK_SIZE_TO_RESUME

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Constructor & Destructor Documentation

BazisLib::Network::MultiThreaded::FileChunkDatabase::FileChunkDatabase

(

ULONGLONG

FileSize

)

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Member Function Documentation

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::CheckIntegrity

(

)

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::DownloadComplete

(

)

std::vector<PendingChunk> BazisLib::Network::MultiThreaded::FileChunkDatabase::ExtractSortedDoneChunkList

(

)

std::vector<PendingChunk> BazisLib::Network::MultiThreaded::FileChunkDatabase::ExtractSortedPendingChunkList

(

)

ULONGLONG BazisLib::Network::MultiThreaded::FileChunkDatabase::GetAlreadyDownloadedSize

(

)

Returns the amount of data already downloaded.

Attention:

This method is relatively slow, as it scans the whole database and calculates the downloaded data amount. Avoid calling it too frequently.

ULONGLONG BazisLib::Network::MultiThreaded::FileChunkDatabase::GetChunkEndOffset

(

unsigned

ChunkID

)

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::GetRangeToDownload	(	ULONGLONG *	pOffset,
		ULONGLONG *	pEndOffset,
		unsigned *	pChunkID
	)

Returns false ONLY if no more chunks are left to download.

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::LoadFromFileInNativeFormat

(

ManagedPointer< AIFile >

file

)

void BazisLib::Network::MultiThreaded::FileChunkDatabase::OnChunkDownloadStopped

(

unsigned

ChunkID

)

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::OnFileChunkDownloaded	(	unsigned	ChunkID,
		ULONGLONG	Size
	)

void BazisLib::Network::MultiThreaded::FileChunkDatabase::Reset

(

ULONGLONG

FileSize

)

void BazisLib::Network::MultiThreaded::FileChunkDatabase::ResumeFile	(	ULONGLONG	FileSize,
		ULONGLONG	DownloadedSize
	)

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::SaveToFileInNativeFormat

(

ManagedPointer< AIFile >

file

)

bool BazisLib::Network::MultiThreaded::FileChunkDatabase::Valid

(

)

[inline]

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Member Data Documentation

RWLock BazisLib::Network::MultiThreaded::FileChunkDatabase::m_ChunkListLock [private]

SingleMallocVector<PendingChunk> BazisLib::Network::MultiThreaded::FileChunkDatabase::m_PendingChunks [private]

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The documentation for this class was generated from the following file:

• bzsnet/mtdl.h