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Overview
Comment:Fix a bug that was preventing "PRAGMA temp_store=MEMORY" from working. (CVS 1887)
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SHA1: bb55894521848b6a9d8b516a3c7eeb3482936d7e
User & Date: drh 2004-08-14 18:34:55.000
Context
2004-08-14
19:20
If meta(3)>0 then make the database readonly for now. This allows the current database to interact with future releases that might include autovacuum. (CVS 1888) (check-in: 7619bf4771 user: drh tags: trunk)
18:34
Fix a bug that was preventing "PRAGMA temp_store=MEMORY" from working. (CVS 1887) (check-in: bb55894521 user: drh tags: trunk)
18:18
The command-line shell should avoid writing changes into string constants. (CVS 1886) (check-in: 6b8178de99 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/main.c.
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**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.249 2004/08/01 00:10:45 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** The following constant value is used by the SQLITE_BIGENDIAN and








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**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.250 2004/08/14 18:34:55 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
#include <ctype.h>

/*
** The following constant value is used by the SQLITE_BIGENDIAN and
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  const char *zFilename,    /* Name of the file containing the BTree database */
  int omitJournal,          /* if TRUE then do not journal this file */
  int nCache,               /* How many pages in the page cache */
  Btree **ppBtree           /* Pointer to new Btree object written here */
){
  int btree_flags = 0;
  int rc;
  int useMem = 0;
  
  assert( ppBtree != 0);
  if( omitJournal ){
    btree_flags |= BTREE_OMIT_JOURNAL;
  }
  if( zFilename==0 ){
#ifndef TEMP_STORE
# define TEMP_STORE 2
#endif
#if TEMP_STORE==0
    useMem = 0;
#endif
#if TEMP_STORE==1
    useMem = db->temp_store==2;
#endif
#if TEMP_STORE==2
    useMem = db->temp_store!=1;
#endif
#if TEMP_STORE==3
    useMem = 1;
#endif
  }
  if( (zFilename && strcmp(zFilename, ":memory:")==0)
         || (zFilename==0 && useMem) ){
    btree_flags |= BTREE_MEMORY;
  }

  rc = sqlite3BtreeOpen(zFilename, ppBtree, btree_flags);
  if( rc==SQLITE_OK ){
    sqlite3BtreeSetBusyHandler(*ppBtree, (void*)&db->busyHandler);
    sqlite3BtreeSetCacheSize(*ppBtree, nCache);
  }
  return rc;








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  const char *zFilename,    /* Name of the file containing the BTree database */
  int omitJournal,          /* if TRUE then do not journal this file */
  int nCache,               /* How many pages in the page cache */
  Btree **ppBtree           /* Pointer to new Btree object written here */
){
  int btree_flags = 0;
  int rc;

  
  assert( ppBtree != 0);
  if( omitJournal ){
    btree_flags |= BTREE_OMIT_JOURNAL;
  }
  if( zFilename==0 ){
#ifndef TEMP_STORE
# define TEMP_STORE 1
#endif
#if TEMP_STORE==0
    /* Do nothing */
#endif
#if TEMP_STORE==1
    if( db->temp_store==2 ) zFilename = ":memory:";
#endif
#if TEMP_STORE==2
    if( db->temp_store!=1 ) zFilename = ":memory:";
#endif
#if TEMP_STORE==3
    zFilename = ":memory:";
#endif
  }





  rc = sqlite3BtreeOpen(zFilename, ppBtree, btree_flags);
  if( rc==SQLITE_OK ){
    sqlite3BtreeSetBusyHandler(*ppBtree, (void*)&db->busyHandler);
    sqlite3BtreeSetCacheSize(*ppBtree, nCache);
  }
  return rc;
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