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Licensed Materials - Property of IBM
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DB2 Storage Engine Enablement
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Copyright IBM Corporation 2007,2008
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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(a) Redistributions of source code must retain this list of conditions, the
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copyright notice in section {d} below, and the disclaimer following this
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(b) Redistributions in binary form must reproduce this list of conditions, the
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copyright notice in section (d) below, and the disclaimer following this
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list of conditions, in the documentation and/or other materials provided
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with the distribution.
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(c) The name of IBM may not be used to endorse or promote products derived from
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this software without specific prior written permission.
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(d) The text of the required copyright notice is:
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Licensed Materials - Property of IBM
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DB2 Storage Engine Enablement
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Copyright IBM Corporation 2007,2008
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THIS SOFTWARE IS PROVIDED BY IBM CORPORATION "AS IS" AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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SHALL IBM CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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#include "db2i_sqlStatementStream.h"
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#include "as400_types.h"
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Add a statement to the statement stream, allocating additional memory as needed.
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@parm stmt The statement text
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@parm length The length of the statement text
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@parm fileSortSequence The DB2 sort sequence identifier, in EBCDIC
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@parm fileSortSequenceLibrary The DB2 sort sequence library, in EBCDIC
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@return Reference to this object
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SqlStatementStream& SqlStatementStream::addStatementInternal(const char* stmt,
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const char* fileSortSequence,
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const char* fileSortSequenceLibrary)
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uint32 storageNeeded = length + sizeof(StmtHdr_t);
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storageNeeded = (storageNeeded + 3) & ~3; // We have to be 4-byte aligned.
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if (storageNeeded > storageRemaining())
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// We overallocate new storage to reduce number of times reallocation is
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int newSize = curSize + 2 * storageNeeded;
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DBUG_PRINT("SqlStatementStream::addStatementInternal",
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("PERF: Had to realloc! Old size=%d. New size=%d", curSize, newSize));
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char* old_space = block;
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char* new_space = (char*)getNewSpace(newSize);
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memcpy(new_space, old_space, curSize);
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ptr = new_space + (ptr - old_space);
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DBUG_ASSERT((address64_t)ptr % 4 == 0);
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memcpy(((StmtHdr_t*)ptr)->SrtSeqNam,
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sizeof(((StmtHdr_t*)ptr)->SrtSeqNam));
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memcpy(((StmtHdr_t*)ptr)->SrtSeqSch,
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fileSortSequenceLibrary,
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sizeof(((StmtHdr_t*)ptr)->SrtSeqSch));
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((StmtHdr_t*)ptr)->Length = length;
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memcpy(ptr + sizeof(StmtHdr_t), stmt, length);
added
removed
storage/ibmdb2i/db2i_sqlStatementStream.cc
