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Import the ibmdb2i-ga4-src snapshot from IBM

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Timothy Smith 2009-03-09 15:20:14 -06:00
commit a5216560d0
18 changed files with 837 additions and 301 deletions
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11
storage/ibmdb2i/db2i_ioBuffers.h
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@ -73,10 +73,12 @@ class IORowBuffer
Sets up the buffer to hold the size indicated.
@param rowLen length of the rows that will be stored in this buffer
@param nullMapOffset position of null map within each row
@param size buffer size requested
*/
void allocBuf(uint32 rowLen, uint32 size)
void allocBuf(uint32 rowLen, uint16 nullMapOffset, uint32 size)
{
nullOffset = nullMapOffset;
uint32 newSize = size + sizeof(BufferHdr_t);
// If the internal structure of the row is changing, we need to
// remember this and notify the subclasses via initAfterAllocate();
@ -129,7 +131,9 @@ class IORowBuffer
};
uint32 getRowCapacity() const {return rowCapacity;}
uint32 getRowNullOffset() const {return nullOffset;}
uint32 getRowLength() const {return rowLength;}
protected:
/**
Called prior to freeing buffer storage so that subclasses can do
@ -150,6 +154,7 @@ class IORowBuffer
uint32 allocSize;
uint32 rowCapacity;
uint32 rowLength;
uint16 nullOffset;
uint32& usedRows() const { return ((BufferHdr_t*)(char*)data)->UsedRowCnt; }
uint32& maxRows() const {return ((BufferHdr_t*)(char*)data)->MaxRowCnt; }
};
@ -207,7 +212,7 @@ class IOReadBuffer : public IORowBuffer
IOReadBuffer() {;}
IOReadBuffer(uint32 rows, uint32 rowLength)
{
allocBuf(rows, rows * rowLength);
allocBuf(rows, 0, rows * rowLength);
maxRows() = rows;
}