Function DatumStreamBitMapWrite_ZeroFill

src/include/utils/datumstreamblock.h:330–373

}

static inline void
DatumStreamBitMapWrite_ZeroFill(
								DatumStreamBitMapWrite * bmw,
								int32 bitCount)
{
	int32		newSize;
	int32		bitNumberInByte;

	/*
	 * Assert the bit-map is newly initialized.
	 */
	Assert(bmw->byteBit == 0);
	Assert(bmw->bitOnCount == 0);
	Assert(bmw->bitCount == 0);

	if (bitCount > 0)
	{
		/*
		 * Assert we are not going beyond the maximum buffer size.
		 */
		newSize = DatumStreamBitMap_Size(bitCount);
#ifdef USE_ASSERT_CHECKING
		if (newSize > bmw->bufferSize)
		{
			elog(ERROR,
				 "New fill bit-map buffer size %d greater than maximum buffer size %d",
				 newSize,
				 bmw->bufferSize);
		}
#endif

		/*
		 * Zero fill out and set the write variables.
		 */
		memset(bmw->buffer, 0, newSize);

		bitNumberInByte = (bitCount - 1) & 7;
		bmw->byteBit = 1 << bitNumberInByte;

		bmw->bytePointer = &bmw->buffer[newSize - 1];

		bmw->bitCount = bitCount;
	}
}

static inline void
DatumStreamBitMapWrite_AddBit(