/ Check-in [e305b5a9]
Login
☰Home Timeline Branches

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Change the default chunk size on test_multiplex.c to 2147418112 bytes (formerly 1073741824 bytes) and make the default configurable at compile-time using SQLITE_MULTIPLEX_CHUNK_SIZE and at run-time using the "chunksize" URI query parameter. Add support fo test_multiplex to the shell.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: e305b5a931374e2a1d2e66ea0a1248b9d4aecb19
User & Date: drh 2011-07-08 17:02:57
Context
2011-07-09
13:00
In where.c::findIndexCol - make sure that the Expr.op is TK_COLUMN before accessing the Expr.iColumn and Expr.iTable fields. Also fix a couple of unreachable branches. (check-in: 418a4da2 user: drh tags: trunk)
2011-07-08
17:02
Change the default chunk size on test_multiplex.c to 2147418112 bytes (formerly 1073741824 bytes) and make the default configurable at compile-time using SQLITE_MULTIPLEX_CHUNK_SIZE and at run-time using the "chunksize" URI query parameter. Add support fo test_multiplex to the shell. (check-in: e305b5a9 user: drh tags: trunk)
16:10
Fix for [54844eea3f]: Do not create automatic indexes on correlated sub-queries. (check-in: 9f14fa56 user: dan tags: trunk)
Changes
Hide Diffs Unified Diffs Show Whitespace Changes Patch

Changes to src/shell.c. 

2628
2629
2630
2631
2632
2633
2634



2635
2636
2637
2638
2639
2640
2641
....
2729
2730
2731
2732
2733
2734
2735





2736
2737
2738
2739
2740
2741
2742
....
2847
2848
2849
2850
2851
2852
2853

2854
2855





2856
2857
2858
2859
2860
2861
2862

  "   -stats               print memory stats before each finalize\n"
  "   -nullvalue 'text'    set text string for NULL values\n"
  "   -version             show SQLite version\n"
  "   -vfs NAME            use NAME as the default VFS\n"
#ifdef SQLITE_ENABLE_VFSTRACE
  "   -vfstrace            enable tracing of all VFS calls\n"
#endif



;
static void usage(int showDetail){
  fprintf(stderr,
      "Usage: %s [OPTIONS] FILENAME [SQL]\n"  
      "FILENAME is the name of an SQLite database. A new database is created\n"
      "if the file does not previously exist.\n", Argv0);
  if( showDetail ){
................................................................................
         const char *zOldVfsName,
         int (*xOut)(const char*,void*),
         void *pOutArg,
         int makeDefault
      );
      vfstrace_register("trace",0,(int(*)(const char*,void*))fputs,stderr,1);
#endif





    }else if( strcmp(argv[i],"-vfs")==0 ){
      sqlite3_vfs *pVfs = sqlite3_vfs_find(argv[++i]);
      if( pVfs ){
        sqlite3_vfs_register(pVfs, 1);
      }else{
        fprintf(stderr, "no such VFS: \"%s\"\n", argv[i]);
        exit(1);
................................................................................
      stdin_is_interactive = 1;
    }else if( strcmp(z,"-batch")==0 ){
      stdin_is_interactive = 0;
    }else if( strcmp(z,"-heap")==0 ){
      i++;
    }else if( strcmp(z,"-vfs")==0 ){
      i++;

    }else if( strcmp(z,"-vfstrace")==0 ){
      i++;





    }else if( strcmp(z,"-help")==0 || strcmp(z, "--help")==0 ){
      usage(1);
    }else{
      fprintf(stderr,"%s: Error: unknown option: %s\n", Argv0, z);
      fprintf(stderr,"Use -help for a list of options.\n");
      return 1;
    }








>
>
>







 







>
>
>
>
>







 







>


>
>
>
>
>








2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
....
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
....
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876

  "   -stats               print memory stats before each finalize\n"
  "   -nullvalue 'text'    set text string for NULL values\n"
  "   -version             show SQLite version\n"
  "   -vfs NAME            use NAME as the default VFS\n"
#ifdef SQLITE_ENABLE_VFSTRACE
  "   -vfstrace            enable tracing of all VFS calls\n"
#endif
#ifdef SQLITE_ENABLE_MULTIPLEX
  "   -multiplex           enable the multiplexor VFS\n"
#endif
;
static void usage(int showDetail){
  fprintf(stderr,
      "Usage: %s [OPTIONS] FILENAME [SQL]\n"  
      "FILENAME is the name of an SQLite database. A new database is created\n"
      "if the file does not previously exist.\n", Argv0);
  if( showDetail ){
................................................................................
         const char *zOldVfsName,
         int (*xOut)(const char*,void*),
         void *pOutArg,
         int makeDefault
      );
      vfstrace_register("trace",0,(int(*)(const char*,void*))fputs,stderr,1);
#endif
#ifdef SQLITE_ENABLE_MULTIPLEX
    }else if( strcmp(argv[i],"-multiplex")==0 ){
      extern int sqlite3_multiple_initialize(const char*,int);
      sqlite3_multiplex_initialize(0, 1);
#endif
    }else if( strcmp(argv[i],"-vfs")==0 ){
      sqlite3_vfs *pVfs = sqlite3_vfs_find(argv[++i]);
      if( pVfs ){
        sqlite3_vfs_register(pVfs, 1);
      }else{
        fprintf(stderr, "no such VFS: \"%s\"\n", argv[i]);
        exit(1);
................................................................................
      stdin_is_interactive = 1;
    }else if( strcmp(z,"-batch")==0 ){
      stdin_is_interactive = 0;
    }else if( strcmp(z,"-heap")==0 ){
      i++;
    }else if( strcmp(z,"-vfs")==0 ){
      i++;
#ifdef SQLITE_ENABLE_VFSTRACE
    }else if( strcmp(z,"-vfstrace")==0 ){
      i++;
#endif
#ifdef SQLITE_ENABLE_MULTIPLEX
    }else if( strcmp(z,"-multiplex")==0 ){
      i++;
#endif
    }else if( strcmp(z,"-help")==0 || strcmp(z, "--help")==0 ){
      usage(1);
    }else{
      fprintf(stderr,"%s: Error: unknown option: %s\n", Argv0, z);
      fprintf(stderr,"Use -help for a list of options.\n");
      return 1;
    }

Changes to src/test_multiplex.c. 

41
42
43
44
45
46
47

48
49
50
51
52
53
54
..
74
75
76
77
78
79
80

81

82
83
84
85
86

87

88
89
90
91
92
93

94

95
96
97
98
99
100
101
...
427
428
429
430
431
432
433

434
435
436
437
438
439





440
441
442
443
444
445
446

** The multiplex VFS allows databases up to 32 GiB in size.  But it splits
** the files up into 1 GiB pieces, so that they will work even on filesystems
** that do not support large files.
*/
#include "sqlite3.h"
#include <string.h>
#include <assert.h>

#include "test_multiplex.h"

#ifndef SQLITE_CORE
  #define SQLITE_CORE 1  /* Disable the API redefinition in sqlite3ext.h */
#endif
#include "sqlite3ext.h"

................................................................................
#define sqlite3_mutex_held(X)     ((void)(X),1)
#define sqlite3_mutex_notheld(X)  ((void)(X),1)
#endif /* SQLITE_THREADSAFE==0 */


/************************ Shim Definitions ******************************/


#define SQLITE_MULTIPLEX_VFS_NAME "multiplex"


/* This is the limit on the chunk size.  It may be changed by calling
** the xFileControl() interface.  It will be rounded up to a 
** multiple of MAX_PAGE_SIZE.  We default it here to 1GB.
*/

#define SQLITE_MULTIPLEX_CHUNK_SIZE (MAX_PAGE_SIZE*16384)


/* Default limit on number of chunks.  Care should be taken
** so that values for chunks numbers fit in the SQLITE_MULTIPLEX_EXT_FMT
** format specifier. It may be changed by calling
** the xFileControl() interface.
*/

#define SQLITE_MULTIPLEX_MAX_CHUNKS 32


/* If SQLITE_MULTIPLEX_EXT_OVWR is defined, the 
** last SQLITE_MULTIPLEX_EXT_SZ characters of the 
** filename will be overwritten, otherwise, the 
** multiplex extension is simply appended to the filename.
** Ex.  (undefined) test.db -> test.db01
**      (defined)   test.db -> test.01
................................................................................
    pGroup = sqlite3_malloc( sz );
    if( pGroup==0 ){
      rc=SQLITE_NOMEM;
    }
  }

  if( rc==SQLITE_OK ){

    /* assign pointers to extra space allocated */
    char *p = (char *)&pGroup[1];
    pMultiplexOpen->pGroup = pGroup;
    memset(pGroup, 0, sz);
    pGroup->bEnabled = -1;
    pGroup->nChunkSize = SQLITE_MULTIPLEX_CHUNK_SIZE;





    pGroup->nMaxChunks = SQLITE_MULTIPLEX_MAX_CHUNKS;
    pGroup->pReal = (sqlite3_file **)p;
    p += (sizeof(sqlite3_file *)*pGroup->nMaxChunks);
    for(i=0; i<pGroup->nMaxChunks; i++){
      pGroup->pReal[i] = (sqlite3_file *)p;
      p += pOrigVfs->szOsFile;
    }








>







 







>
|
>



|

>
|
>






>
|
>







 







>






>
>
>
>
>








41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
..
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
...
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459

** The multiplex VFS allows databases up to 32 GiB in size.  But it splits
** the files up into 1 GiB pieces, so that they will work even on filesystems
** that do not support large files.
*/
#include "sqlite3.h"
#include <string.h>
#include <assert.h>
#include <stdlib.h>
#include "test_multiplex.h"

#ifndef SQLITE_CORE
  #define SQLITE_CORE 1  /* Disable the API redefinition in sqlite3ext.h */
#endif
#include "sqlite3ext.h"

................................................................................
#define sqlite3_mutex_held(X)     ((void)(X),1)
#define sqlite3_mutex_notheld(X)  ((void)(X),1)
#endif /* SQLITE_THREADSAFE==0 */


/************************ Shim Definitions ******************************/

#ifndef SQLITE_MULTIPLEX_VFS_NAME
# define SQLITE_MULTIPLEX_VFS_NAME "multiplex"
#endif

/* This is the limit on the chunk size.  It may be changed by calling
** the xFileControl() interface.  It will be rounded up to a 
** multiple of MAX_PAGE_SIZE.  We default it here to 2GiB less 64KiB.
*/
#ifndef SQLITE_MULTIPLEX_CHUNK_SIZE
# define SQLITE_MULTIPLEX_CHUNK_SIZE 2147418112
#endif

/* Default limit on number of chunks.  Care should be taken
** so that values for chunks numbers fit in the SQLITE_MULTIPLEX_EXT_FMT
** format specifier. It may be changed by calling
** the xFileControl() interface.
*/
#ifndef SQLITE_MULTIPLEX_MAX_CHUNKS
# define SQLITE_MULTIPLEX_MAX_CHUNKS 32
#endif

/* If SQLITE_MULTIPLEX_EXT_OVWR is defined, the 
** last SQLITE_MULTIPLEX_EXT_SZ characters of the 
** filename will be overwritten, otherwise, the 
** multiplex extension is simply appended to the filename.
** Ex.  (undefined) test.db -> test.db01
**      (defined)   test.db -> test.01
................................................................................
    pGroup = sqlite3_malloc( sz );
    if( pGroup==0 ){
      rc=SQLITE_NOMEM;
    }
  }

  if( rc==SQLITE_OK ){
    const char *zChunkSize;
    /* assign pointers to extra space allocated */
    char *p = (char *)&pGroup[1];
    pMultiplexOpen->pGroup = pGroup;
    memset(pGroup, 0, sz);
    pGroup->bEnabled = -1;
    pGroup->nChunkSize = SQLITE_MULTIPLEX_CHUNK_SIZE;
    zChunkSize = sqlite3_uri_parameter(zName, "chunksize");
    if( zChunkSize ){
      int n = atoi(zChunkSize);
      if( n>0 ) pGroup->nChunkSize = (n+0xffff)&~0xffff;
    }
    pGroup->nMaxChunks = SQLITE_MULTIPLEX_MAX_CHUNKS;
    pGroup->pReal = (sqlite3_file **)p;
    p += (sizeof(sqlite3_file *)*pGroup->nMaxChunks);
    for(i=0; i<pGroup->nMaxChunks; i++){
      pGroup->pReal[i] = (sqlite3_file *)p;
      p += pOrigVfs->szOsFile;
    }

This page was generated in about 0.016s by Fossil 2.12 [c6359b4ec1] 2020-08-12 18:06:06