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[patch 106/129] Merge patch for revision 1915 from InnoDB SVN:
revno: 1915
revision-id: svn-v4:16c675df-0fcb-4bc9-8058-dcc011a37293:branches/zip:6130
parent: svn-v4:16c675df-0fcb-4bc9-8058-dcc011a37293:branches/zip:6126
committer: marko
timestamp: Mon 2009-11-02 09:42:56 +0000
message:
  branches/zip: Free all resources at shutdown. Set pointers to NULL, so
  that Valgrind will not complain about freed data structures that are
  reachable via pointers.  This addresses Bug #45992 and Bug #46656.
  
  This patch is mostly based on changes copied from branches/embedded-1.0,
  mainly c5432, c3439, c3134, c2994, c2978, but also some other code was
  copied.  Some added cleanup code is specific to MySQL/InnoDB.
  
  rb://199 approved by Sunny Bains
modified:
  ChangeLog                      2425@16c675df-0fcb-4bc9-8058-dcc011a37293:branches%2Fzip%2FChangeLog
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  include/pars0pars.h            2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Finclude%2Fpars0pars.h
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  log/log0recv.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Flog%2Flog0recv.c
  mem/mem0dbg.c                  2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fmem%2Fmem0dbg.c
  mem/mem0pool.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fmem%2Fmem0pool.c
  os/os0file.c                   2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fos%2Fos0file.c
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  os/os0thread.c                 2@16c675df-0fcb-4bc9-8058-dcc011a37293:trunk%2Fos%2Fos0thread.c
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diff:
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Lines of Context:
drizzled/optimizer/range_param.h
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#ifndef DRIZZLED_OPTIMIZER_RANGE_PARAM_H
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#define DRIZZLED_OPTIMIZER_RANGE_PARAM_H
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#include <boost/dynamic_bitset.hpp>
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#include "drizzled/field.h"
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namespace drizzled
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namespace optimizer
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{
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class RorScanInfo
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{
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public:
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  RorScanInfo()
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    :
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      idx(0),
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      keynr(0),
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      records(0), 
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      sel_arg(NULL),
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      covered_fields(0),
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      covered_fields_size(0),
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      used_fields_covered(0),
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      key_rec_length(0),
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      index_read_cost(0.0),
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      first_uncovered_field(0),
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      key_components(0)
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  {}
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  boost::dynamic_bitset<> bitsToBitset() const;
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  void subtractBitset(const boost::dynamic_bitset<>& in_bitset);
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  uint32_t findFirstNotSet() const; 
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  size_t getBitCount() const;
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  uint32_t      idx;      /* # of used key in param->keys */
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  uint32_t      keynr;    /* # of used key in table */
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  ha_rows   records;  /* estimate of # records this scan will return */
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  /* Set of intervals over key fields that will be used for row retrieval. */
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  optimizer::SEL_ARG   *sel_arg;
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  /* Fields used in the query and covered by this ROR scan. */
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  uint64_t covered_fields;
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  size_t covered_fields_size;
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  uint32_t      used_fields_covered; /* # of set bits in covered_fields */
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  int       key_rec_length; /* length of key record (including rowid) */
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  /*
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    Cost of reading all index records with values in sel_arg intervals set
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    (assuming there is no need to access full table records)
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  */
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  double    index_read_cost;
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  uint32_t      first_uncovered_field; /* first unused bit in covered_fields */
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  uint32_t      key_components; /* # of parts in the key */
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};
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class RangeParameter
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{
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public:
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      max_key_part(0),
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      range_count(0),
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      quick(false),
 
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      fields_bitmap_size(0),
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      needed_fields(),
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      tmp_covered_fields(),
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      needed_reg(NULL),
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  unsigned char max_key[MAX_KEY_LENGTH+MAX_FIELD_WIDTH];
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  bool quick; // Don't calulate possible keys
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  boost::dynamic_bitset<> needed_fields;    /* bitmask of fields needed by the query */
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  boost::dynamic_bitset<> tmp_covered_fields;
 
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  uint32_t fields_bitmap_size;
 
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  MyBitmap needed_fields;    /* bitmask of fields needed by the query */
 
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  MyBitmap tmp_covered_fields;
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  key_map *needed_reg;        /* ptr to SqlSelect::needed_reg */
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