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| Comment: | Improvements to comments. No code changes. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | nx-devkit |
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| SHA1: |
08bbbd8e38697908ab8ae0f6b512d01c |
| User & Date: | drh 2011-12-14 01:38:12 |
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2011-12-14
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| 18:28 | Merge the VFSNAME file-control addition into the nx-devkit branch. (check-in: 08c1dc51 user: drh tags: nx-devkit) | |
| 17:53 | Add a file-control that will discover the name of the bottom-level VFS and all the shims in between. (Closed-Leaf check-in: cdbfb553 user: drh tags: vfsname-filectrl) | |
| 01:38 | Improvements to comments. No code changes. (check-in: 08bbbd8e user: drh tags: nx-devkit) | |
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2011-12-13
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| 19:03 | Add a hard limit to the number of chunks a multiplexed database may consist of if ENABLE_8_3_NAMES is defined. (check-in: 43a12640 user: dan tags: nx-devkit) | |
Changes to src/test_multiplex.c.
77 78 79 80 81 82 83 84 85 86 87 88 89 90 ... 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 ... 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 |
#define sqlite3_mutex_enter(X) #define sqlite3_mutex_try(X) SQLITE_OK #define sqlite3_mutex_leave(X) #define sqlite3_mutex_held(X) ((void)(X),1) #define sqlite3_mutex_notheld(X) ((void)(X),1) #endif /* SQLITE_THREADSAFE==0 */ #define SQLITE_MULTIPLEX_JOURNAL_8_3_OFFSET 400 /************************ Shim Definitions ******************************/ #ifndef SQLITE_MULTIPLEX_VFS_NAME # define SQLITE_MULTIPLEX_VFS_NAME "multiplex" ................................................................................ if( iChunk>0 ){ #ifdef SQLITE_ENABLE_8_3_NAMES int i; for(i=n-1; i>0 && i>=n-4 && z[i]!='.'; i--){} if( i>=n-4 ) n = i+1; if( pGroup->flags & (SQLITE_OPEN_MAIN_JOURNAL|SQLITE_OPEN_TEMP_JOURNAL) ){ /* The extensions on overflow files for main databases are 001, 002, ** 003 and so forth. To avoid name collisions, add 100 to the ** extensions of journal files so that they are 101, 102, 103, .... */ iChunk += SQLITE_MULTIPLEX_JOURNAL_8_3_OFFSET; } #endif sqlite3_snprintf(4,&z[n],"%03d",iChunk); } } ................................................................................ int *rc, int *pOutFlags ){ sqlite3_file *pSubOpen = 0; sqlite3_vfs *pOrigVfs = gMultiplex.pOrigVfs; /* Real VFS */ #ifdef SQLITE_ENABLE_8_3_NAMES /* If JOURNAL_8_3_OFFSET is set to (say) 500, then any overflow files are ** part of a database journal are named db.501, db.502, and so on. A ** database may therefore not grow to larger than 500 chunks. Attempting ** to open chunk 501 indicates the database is full. */ if( iChunk>=SQLITE_MULTIPLEX_JOURNAL_8_3_OFFSET ){ *rc = SQLITE_FULL; return 0; } #endif *rc = multiplexSubFilename(pGroup, iChunk); |
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77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 ... 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 ... 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 |
#define sqlite3_mutex_enter(X) #define sqlite3_mutex_try(X) SQLITE_OK #define sqlite3_mutex_leave(X) #define sqlite3_mutex_held(X) ((void)(X),1) #define sqlite3_mutex_notheld(X) ((void)(X),1) #endif /* SQLITE_THREADSAFE==0 */ /* First chunk for rollback journal files */ #define SQLITE_MULTIPLEX_JOURNAL_8_3_OFFSET 400 /************************ Shim Definitions ******************************/ #ifndef SQLITE_MULTIPLEX_VFS_NAME # define SQLITE_MULTIPLEX_VFS_NAME "multiplex" ................................................................................ if( iChunk>0 ){ #ifdef SQLITE_ENABLE_8_3_NAMES int i; for(i=n-1; i>0 && i>=n-4 && z[i]!='.'; i--){} if( i>=n-4 ) n = i+1; if( pGroup->flags & (SQLITE_OPEN_MAIN_JOURNAL|SQLITE_OPEN_TEMP_JOURNAL) ){ /* The extensions on overflow files for main databases are 001, 002, ** 003 and so forth. To avoid name collisions, add 400 to the ** extensions of journal files so that they are 401, 402, 403, .... */ iChunk += SQLITE_MULTIPLEX_JOURNAL_8_3_OFFSET; } #endif sqlite3_snprintf(4,&z[n],"%03d",iChunk); } } ................................................................................ int *rc, int *pOutFlags ){ sqlite3_file *pSubOpen = 0; sqlite3_vfs *pOrigVfs = gMultiplex.pOrigVfs; /* Real VFS */ #ifdef SQLITE_ENABLE_8_3_NAMES /* If JOURNAL_8_3_OFFSET is set to (say) 400, then any overflow files are ** part of a database journal are named db.401, db.402, and so on. A ** database may therefore not grow to larger than 400 chunks. Attempting ** to open chunk 401 indicates the database is full. */ if( iChunk>=SQLITE_MULTIPLEX_JOURNAL_8_3_OFFSET ){ *rc = SQLITE_FULL; return 0; } #endif *rc = multiplexSubFilename(pGroup, iChunk); |