df_MgrWriter Class Reference
[IVD Data format.]

#include <df.h>

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List of all members.

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Detailed Description

This class is used on top of df_BlockManager to perform write operations to the buffer queue inside the df_BlockManager.

Destructor automatically sets end of data.

Definition at line 235 of file df.h.

Public Member Functions
	df_MgrWriter (df_BlockManager &a_mgr)
	~df_MgrWriter ()
df_DataBlock *	GetFree ()
void	Flush ()
void	SetError (ivd_Exception *a_err)
Private Attributes
	log_CLASSID_m
df_BlockManager &	m_mgr
df_DataBlock *	m_allocated
	Holds a pointer to the last allocated df_DataBlock.

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Constructor & Destructor Documentation

df_MgrWriter::df_MgrWriter

(

df_BlockManager &

a_mgr

)

Definition at line 46 of file df_blockmanager.cpp.

References log_FUNC_m, m_mgr, and df_BlockManager::RegisterWriter().

  : m_mgr(a_mgr),
    m_allocated(NULL) {

    log_FUNC_m(df_MgrWriter);

    m_mgr.RegisterWriter();
}

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df_MgrWriter::~df_MgrWriter

(

)

Definition at line 55 of file df_blockmanager.cpp.

References dbg_LOW, Flush(), df_DataBlock::IsClosed(), df_DataBlock::IsEmpty(), log_DBG_m, log_FUNC_m, m_allocated, m_mgr, NULL, and df_BlockManager::SetEndOfData().

                            {

    log_FUNC_m(~df_MgrWriter);

    if (   m_allocated != NULL
        && !m_allocated->IsEmpty()
        && !m_allocated->IsClosed() ) {

        log_DBG_m(dbg_LOW, "df_MgrWriter: Flushing last block on EOD.");
        Flush();
    }

    // In theory, there is a possibility that the reader thread outruns this one
    // and waits for m_mgr.m_closed_c again before m_mgr.m_endOfData is set.
    m_mgr.SetEndOfData();
}

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Member Function Documentation

df_DataBlock * df_MgrWriter::GetFree

(

)

Definition at line 72 of file df_blockmanager.cpp.

References df_BlockManager::GetFree(), m_allocated, and m_mgr.

Referenced by bea_FRI::ReadFRI(), blk_NetReader::Run(), blk_BufferReader::Run(), and bea_VolumeReader::Run().

                                    {
    m_allocated = m_mgr.GetFree();
    return m_allocated;
}

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void df_MgrWriter::Flush

(

)

Definition at line 77 of file df_blockmanager.cpp.

References df_BlockManager::Flush(), m_allocated, m_mgr, and NULL.

Referenced by bea_FRI::ReadFRI(), blk_NetReader::Run(), blk_BufferReader::Run(), bea_VolumeReader::Run(), and ~df_MgrWriter().

                         {
    m_mgr.Flush();
    m_allocated = NULL;
}

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void df_MgrWriter::SetError

(

ivd_Exception *

a_err

)

[inline]

Definition at line 244 of file df.h.

Referenced by blk_NetReader::Run(), blk_BufferReader::Run(), and bea_VolumeReader::Run().

{ m_mgr.SetWriterError(a_err); };

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Member Data Documentation

df_MgrWriter::log_CLASSID_m [private]

Definition at line 244 of file df.h.

df_BlockManager& df_MgrWriter::m_mgr [private]

Definition at line 249 of file df.h.

Referenced by df_MgrWriter(), Flush(), GetFree(), and ~df_MgrWriter().

df_DataBlock* df_MgrWriter::m_allocated [private]

Holds a pointer to the last allocated df_DataBlock.

df_MgrWriter::Flush() sets it back to NULL.

Used in shutdown to detect if Flush() must be performed before setting EOD.

Definition at line 258 of file df.h.

Referenced by Flush(), GetFree(), and ~df_MgrWriter().

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

• df.h
• df_blockmanager.cpp