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Overview
Comment:Have the bt backend support "PRAGMA page_size".
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SHA1: 5aca057cad7bef78a357619569b22d7ee0481814
User & Date: dan 2014-02-17 09:26:10
Context
2014-02-17
18:39
Add IO error tests for the bt backend. check-in: 9638da92b6 user: dan tags: trunk
09:26
Have the bt backend support "PRAGMA page_size". check-in: 5aca057cad user: dan tags: trunk
2014-02-15
20:29
Defer opening a bt database until it is first read. check-in: d9560b73de user: dan tags: trunk
Changes
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Changes to src/bt_main.c. 

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      int *pInt = (int*)pArg;
      ((BtLock*)db->pPager)->nBlksz = *pInt;
      break;
    }

    case BT_CONTROL_PAGESZ: {
      int *pInt = (int*)pArg;








      ((BtLock*)db->pPager)->nPgsz = *pInt;






      break;
    }

  }

  return rc;
}








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      int *pInt = (int*)pArg;
      ((BtLock*)db->pPager)->nBlksz = *pInt;
      break;
    }

    case BT_CONTROL_PAGESZ: {
      int *pInt = (int*)pArg;
      if( sqlite4BtPagerFilename(db->pPager, BT_PAGERFILE_DATABASE) ){
        int iCtx;                   /* ControlTransaction() context */
        rc = btControlTransaction(db, &iCtx);
        if( rc==SQLITE4_OK ){
          *pInt = (int)(sqlite4BtPagerDbhdr(db->pPager)->pgsz);
          btControlTransactionDone(db, iCtx);
        }
      }else{
        BtLock *pLock = (BtLock*)db->pPager;
        int nNew = *pInt;
        if( ((nNew-1)&nNew)==0 && nNew>=512 && nNew<=32768 ){
          pLock->nPgsz = nNew;
        }
        *pInt = pLock->nPgsz;
      }
      break;
    }

  }

  return rc;
}

Changes to src/bt_pager.c. 

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  assert( p->iTransactionLevel>=1 );
  *piVal = p->pHdr->iCookie;
  return SQLITE4_OK;
}

const char *sqlite4BtPagerFilename(BtPager *p, int ePagerfile){
  const char *zTail;




  switch( ePagerfile ){
    case BT_PAGERFILE_DATABASE:
      zTail = "";
      break;

    case BT_PAGERFILE_LOG:








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  assert( p->iTransactionLevel>=1 );
  *piVal = p->pHdr->iCookie;
  return SQLITE4_OK;
}

const char *sqlite4BtPagerFilename(BtPager *p, int ePagerfile){
  const char *zTail;

  /* If the database file has not yet been opened, return a null pointer. */
  if( p->zFile==0 ) return 0;

  switch( ePagerfile ){
    case BT_PAGERFILE_DATABASE:
      zTail = "";
      break;

    case BT_PAGERFILE_LOG:

Changes to src/kvbt.c. 

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typedef struct KVBtCsr KVBtCsr;

/*
** An instance of an open connection to a bt_db store.  A subclass of KVStore.
*/
struct KVBt {
  KVStore base;                   /* Base class, must be first */
  const char *zFilename;          /* File to open */
  int bOpen;                      /* See above */
  int openrc;                     /* See above */
  bt_db *pDb;                     /* Database handle */
};

/*
** An instance of an open cursor pointing into an LSM store.  A subclass
................................................................................
}

static int btPutMeta(KVStore *pKVStore, unsigned int iVal){
  KVBt *p = (KVBt *)pKVStore;
  assert( p->bOpen==1 );
  return sqlite4BtSetCookie(p->pDb, iVal);
}













































static int btGetMethod(
  sqlite4_kvstore *pKVStore, 
  const char *zMethod, 
  void **ppArg,
  void (**pxFunc)(sqlite4_context *, int, sqlite4_value **),
  void (**pxDestroy)(void *)
){



















  return SQLITE4_NOTFOUND;
}

int sqlite4OpenBtree(
  sqlite4_env *pEnv,              /* The environment to use */
  sqlite4_kvstore **ppKVStore,    /* OUT: New KV store returned here */
  const char *zFilename,          /* Name of database file to open */








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typedef struct KVBtCsr KVBtCsr;

/*
** An instance of an open connection to a bt_db store.  A subclass of KVStore.
*/
struct KVBt {
  KVStore base;                   /* Base class, must be first */
  char *zFilename;                /* File to open */
  int bOpen;                      /* See above */
  int openrc;                     /* See above */
  bt_db *pDb;                     /* Database handle */
};

/*
** An instance of an open cursor pointing into an LSM store.  A subclass
................................................................................
}

static int btPutMeta(KVStore *pKVStore, unsigned int iVal){
  KVBt *p = (KVBt *)pKVStore;
  assert( p->bOpen==1 );
  return sqlite4BtSetCookie(p->pDb, iVal);
}

typedef struct BtPragmaCtx BtPragmaCtx;
struct BtPragmaCtx {
  sqlite4_kvstore *pKVStore;
  int ePragma;
};

/*
** Candidate values for BtPragmaCtx.ePragma
*/
#define BTPRAGMA_PAGESZ 1

static void btPragmaDestroy(void *pArg){
  BtPragmaCtx *p = (BtPragmaCtx*)pArg;
  sqlite4_free(p->pKVStore->pEnv, p);
}

static int btPragma(
  sqlite4_context *pCtx, 
  int nVal,
  sqlite4_value **apVal
){
  int rc = SQLITE4_OK;            /* Return code */
  BtPragmaCtx *p = (BtPragmaCtx*)sqlite4_context_appdata(pCtx);
  bt_db *db = ((KVBt*)(p->pKVStore))->pDb;

  switch( p->ePragma ){
    case BTPRAGMA_PAGESZ: {
      int pgsz = -1;
      if( nVal>0 ){
        pgsz = sqlite4_value_int(apVal[0]);
      }
      sqlite4BtControl(db, BT_CONTROL_PAGESZ, (void*)&pgsz);
      sqlite4_result_int(pCtx, pgsz);
      break;
    }

    default:
      assert( 0 );
  }

  return rc;
}


static int btGetMethod(
  sqlite4_kvstore *pKVStore, 
  const char *zMethod, 
  void **ppArg,
  void (**pxFunc)(sqlite4_context *, int, sqlite4_value **),
  void (**pxDestroy)(void*)
){
  struct PragmaMethod {
    const char *zPragma;
    int ePragma;
  } aPragma[] = {
    { "page_size", BTPRAGMA_PAGESZ },
  };
  int i;
  for(i=0; i<ArraySize(aPragma); i++){
    if( sqlite4_stricmp(aPragma[i].zPragma, zMethod)==0 ){
      BtPragmaCtx *pCtx = sqlite4_malloc(pKVStore->pEnv, sizeof(BtPragmaCtx));
      if( pCtx==0 ) return SQLITE4_NOMEM;
      pCtx->ePragma = aPragma[i].ePragma;
      pCtx->pKVStore = pKVStore;
      *ppArg = (void*)pCtx;
      *pxFunc = btPragma;
      *pxDestroy = btPragmaDestroy;
      return SQLITE4_OK;
    }
  }
  return SQLITE4_NOTFOUND;
}

int sqlite4OpenBtree(
  sqlite4_env *pEnv,              /* The environment to use */
  sqlite4_kvstore **ppKVStore,    /* OUT: New KV store returned here */
  const char *zFilename,          /* Name of database file to open */

Changes to test/bt1.test. 

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} {1 1}

do_test 2.2 { 
  hexio_write test.db  8 55555555
  sqlite4 db test.db
  execsql { SELECT * FROM t1 }
} {abcd}






































finish_test










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} {1 1}

do_test 2.2 { 
  hexio_write test.db  8 55555555
  sqlite4 db test.db
  execsql { SELECT * FROM t1 }
} {abcd}

#-------------------------------------------------------------------------
#
do_test 3.1 {
  reset_db
  execsql {
    PRAGMA page_size = 4096;
    CREATE TABLE t1(x);
  }
  db close
  file size test.db
} {8192}

do_test 3.2 {
  sqlite4 db test.db
  execsql { PRAGMA page_size }
} {1024}

do_test 3.3 {
  execsql { SELECT * FROM t1 }
  execsql { PRAGMA page_size }
} {4096}

do_test 3.4 {
  execsql { PRAGMA page_size = 1024 }
} {4096}

do_test 3.5 {
  db close
  sqlite4 db test.db
  execsql { PRAGMA page_size = 2048 }
} {2048}

do_test 3.6 {
  execsql { SELECT * FROM t1 }
  execsql { PRAGMA page_size }
} {4096}

finish_test

Changes to test/createtab.test. 

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  sqlite4 db test.db

  # Create a table that spans multiple pages.  It is important
  # that part of the database be in pages beyond the root page.
  #
  do_test createtab-$av.1 {
    execsql "PRAGMA auto_vacuum=$av"

    execsql {
      PRAGMA page_size=1024;
      CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
      INSERT INTO t1 VALUES(1, hex(randomblob(200)));
      INSERT INTO t1 VALUES(2, hex(randomblob(200)));
      INSERT INTO t1 VALUES(3, hex(randomblob(200)));
      INSERT INTO t1 VALUES(4, hex(randomblob(200)));
      SELECT count(*) FROM t1;
    }








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  sqlite4 db test.db

  # Create a table that spans multiple pages.  It is important
  # that part of the database be in pages beyond the root page.
  #
  do_test createtab-$av.1 {
    execsql "PRAGMA auto_vacuum=$av"
    execsql { PRAGMA page_size=1024; }
    execsql {

      CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
      INSERT INTO t1 VALUES(1, hex(randomblob(200)));
      INSERT INTO t1 VALUES(2, hex(randomblob(200)));
      INSERT INTO t1 VALUES(3, hex(randomblob(200)));
      INSERT INTO t1 VALUES(4, hex(randomblob(200)));
      SELECT count(*) FROM t1;
    }

Changes to test/tkt-5e10420e8d.test. 

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#
#***********************************************************************
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl


do_execsql_test tkt-5e10420e8d.1 {
  PRAGMA page_size = 1024;
  PRAGMA auto_vacuum = incremental;

  CREATE TABLE t1(x);
  CREATE TABLE t2(x);
  CREATE TABLE t3(x);
} {}









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#
#***********************************************************************
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

execsql { PRAGMA page_size = 1024 }
do_execsql_test tkt-5e10420e8d.1 {

  PRAGMA auto_vacuum = incremental;

  CREATE TABLE t1(x);
  CREATE TABLE t2(x);
  CREATE TABLE t3(x);
} {}

Changes to test/tkt35xx.test. 

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#
# $Id: tkt35xx.test,v 1.4 2009/06/05 17:09:12 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test tkt35xx-1.1 {
  execsql {
    PRAGMA auto_vacuum = 0;
    PRAGMA page_size = 1024;
  }
} {}

# Trigger the problem using explicit rollback.
#
do_test tkt35xx-1.1 {
  execsql {
    PRAGMA auto_vacuum = 0;
................................................................................
# Trigger the problem using statement rollback.
#
db close
delete_file test.db
sqlite4 db test.db
set big [string repeat abcdefghij 22]    ;# 220 byte string
do_test tkt35xx-1.2.1 {

  execsql {
    PRAGMA auto_vacuum = 0;
    PRAGMA page_size = 1024;
    CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
    INSERT INTO t3 VALUES(1, $big);
    INSERT INTO t3 VALUES(2, $big);
    INSERT INTO t3 VALUES(3, $big);
    INSERT INTO t3 VALUES(4, $big);
    CREATE TABLE t4(c, d);
    INSERT INTO t4 VALUES(5, $big);








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#
# $Id: tkt35xx.test,v 1.4 2009/06/05 17:09:12 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test tkt35xx-1.1 {
  execsql {  PRAGMA page_size = 1024; }
  execsql { PRAGMA auto_vacuum = 0; }


} {}

# Trigger the problem using explicit rollback.
#
do_test tkt35xx-1.1 {
  execsql {
    PRAGMA auto_vacuum = 0;
................................................................................
# Trigger the problem using statement rollback.
#
db close
delete_file test.db
sqlite4 db test.db
set big [string repeat abcdefghij 22]    ;# 220 byte string
do_test tkt35xx-1.2.1 {
  execsql {  PRAGMA page_size = 1024; }
  execsql {
    PRAGMA auto_vacuum = 0;

    CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
    INSERT INTO t3 VALUES(1, $big);
    INSERT INTO t3 VALUES(2, $big);
    INSERT INTO t3 VALUES(3, $big);
    INSERT INTO t3 VALUES(4, $big);
    CREATE TABLE t4(c, d);
    INSERT INTO t4 VALUES(5, $big);

Changes to test/tkt3918.test. 

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#
# $Id: tkt3918.test,v 1.1 2009/06/17 11:13:28 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test tkt3918.1 {

  execsql {
    PRAGMA page_size = 1024;
    PRAGMA auto_vacuum = incremental;
    CREATE TABLE t1(i, x);
  }
} {}
do_test tkt3918.2 {
  execsql {
    INSERT INTO t1 VALUES(1, randstr(1000,1000));








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#
# $Id: tkt3918.test,v 1.1 2009/06/17 11:13:28 danielk1977 Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

do_test tkt3918.1 {
  execsql { PRAGMA page_size = 1024; }
  execsql {

    PRAGMA auto_vacuum = incremental;
    CREATE TABLE t1(i, x);
  }
} {}
do_test tkt3918.2 {
  execsql {
    INSERT INTO t1 VALUES(1, randstr(1000,1000));

Changes to test/tkt3929.test. 

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source $testdir/tester.tcl
ifcapable {!trigger} {
  finish_test
  return
}

do_test tkt3929-1.0 {

  execsql {
    PRAGMA page_size = 1024;
    CREATE TABLE t1(a, b);
    CREATE INDEX i1 ON t1(a, b);
    CREATE TRIGGER t1_t1 AFTER INSERT ON t1 BEGIN
      UPDATE t1 SET b = 'value: ' || a WHERE t1.rowid = new.rowid;
    END;
  }
} {}








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source $testdir/tester.tcl
ifcapable {!trigger} {
  finish_test
  return
}

do_test tkt3929-1.0 {
  execsql { PRAGMA page_size = 1024; }
  execsql {

    CREATE TABLE t1(a, b);
    CREATE INDEX i1 ON t1(a, b);
    CREATE TRIGGER t1_t1 AFTER INSERT ON t1 BEGIN
      UPDATE t1 SET b = 'value: ' || a WHERE t1.rowid = new.rowid;
    END;
  }
} {}

Changes to test/trigger9.test. 

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}

proc has_rowdata {sql} {
  expr {[lsearch [execsql "explain $sql"] RowData]>=0}
}

do_test trigger9-1.1 {

  execsql {
    PRAGMA page_size = 1024;
    CREATE TABLE t1(x, y, z);
    INSERT INTO t1 VALUES('1', randstr(10000,10000), '2');
    INSERT INTO t1 VALUES('2', randstr(10000,10000), '4');
    INSERT INTO t1 VALUES('3', randstr(10000,10000), '6');
    CREATE TABLE t2(x);
  }
} {}








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}

proc has_rowdata {sql} {
  expr {[lsearch [execsql "explain $sql"] RowData]>=0}
}

do_test trigger9-1.1 {
  execsql { PRAGMA page_size = 1024; }
  execsql {

    CREATE TABLE t1(x, y, z);
    INSERT INTO t1 VALUES('1', randstr(10000,10000), '2');
    INSERT INTO t1 VALUES('2', randstr(10000,10000), '4');
    INSERT INTO t1 VALUES('3', randstr(10000,10000), '6');
    CREATE TABLE t2(x);
  }
} {}

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