diff options
Diffstat (limited to 'src/vdbeaux.c')
| -rw-r--r-- | src/vdbeaux.c | 84 |
1 files changed, 42 insertions, 42 deletions
diff --git a/src/vdbeaux.c b/src/vdbeaux.c index af4fa3789..a07a5f4bd 100644 --- a/src/vdbeaux.c +++ b/src/vdbeaux.c @@ -2629,13 +2629,13 @@ int sqlite3VdbeSetColName( ** A read or write transaction may or may not be active on database handle ** db. If a transaction is active, commit it. If there is a ** write-transaction spanning more than one database file, this routine -** takes care of the master journal trickery. +** takes care of the super-journal trickery. */ static int vdbeCommit(sqlite3 *db, Vdbe *p){ int i; int nTrans = 0; /* Number of databases with an active write-transaction ** that are candidates for a two-phase commit using a - ** master-journal */ + ** super-journal */ int rc = SQLITE_OK; int needXcommit = 0; @@ -2648,7 +2648,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* Before doing anything else, call the xSync() callback for any ** virtual module tables written in this transaction. This has to - ** be done before determining whether a master journal file is + ** be done before determining whether a super-journal file is ** required, as an xSync() callback may add an attached database ** to the transaction. */ @@ -2657,15 +2657,15 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* This loop determines (a) if the commit hook should be invoked and ** (b) how many database files have open write transactions, not ** including the temp database. (b) is important because if more than - ** one database file has an open write transaction, a master journal + ** one database file has an open write transaction, a super-journal ** file is required for an atomic commit. */ for(i=0; rc==SQLITE_OK && i<db->nDb; i++){ Btree *pBt = db->aDb[i].pBt; if( sqlite3BtreeIsInTrans(pBt) ){ - /* Whether or not a database might need a master journal depends upon + /* Whether or not a database might need a super-journal depends upon ** its journal mode (among other things). This matrix determines which - ** journal modes use a master journal and which do not */ + ** journal modes use a super-journal and which do not */ static const u8 aMJNeeded[] = { /* DELETE */ 1, /* PERSIST */ 1, @@ -2703,7 +2703,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ /* The simple case - no more than one database file (not counting the ** TEMP database) has a transaction active. There is no need for the - ** master-journal. + ** super-journal. ** ** If the return value of sqlite3BtreeGetFilename() is a zero length ** string, it means the main database is :memory: or a temp file. In @@ -2737,13 +2737,13 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ } /* The complex case - There is a multi-file write-transaction active. - ** This requires a master journal file to ensure the transaction is + ** This requires a super-journal file to ensure the transaction is ** committed atomically. */ #ifndef SQLITE_OMIT_DISKIO else{ sqlite3_vfs *pVfs = db->pVfs; - char *zMaster = 0; /* File-name for the master journal */ + char *zSuper = 0; /* File-name for the super-journal */ char const *zMainFile = sqlite3BtreeGetFilename(db->aDb[0].pBt); sqlite3_file *pMaster = 0; i64 offset = 0; @@ -2751,48 +2751,48 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ int retryCount = 0; int nMainFile; - /* Select a master journal file name */ + /* Select a super-journal file name */ nMainFile = sqlite3Strlen30(zMainFile); - zMaster = sqlite3MPrintf(db, "%.4c%s%.16c", 0,zMainFile,0); - if( zMaster==0 ) return SQLITE_NOMEM_BKPT; - zMaster += 4; + zSuper = sqlite3MPrintf(db, "%.4c%s%.16c", 0,zMainFile,0); + if( zSuper==0 ) return SQLITE_NOMEM_BKPT; + zSuper += 4; do { u32 iRandom; if( retryCount ){ if( retryCount>100 ){ - sqlite3_log(SQLITE_FULL, "MJ delete: %s", zMaster); - sqlite3OsDelete(pVfs, zMaster, 0); + sqlite3_log(SQLITE_FULL, "MJ delete: %s", zSuper); + sqlite3OsDelete(pVfs, zSuper, 0); break; }else if( retryCount==1 ){ - sqlite3_log(SQLITE_FULL, "MJ collide: %s", zMaster); + sqlite3_log(SQLITE_FULL, "MJ collide: %s", zSuper); } } retryCount++; sqlite3_randomness(sizeof(iRandom), &iRandom); - sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X", + sqlite3_snprintf(13, &zSuper[nMainFile], "-mj%06X9%02X", (iRandom>>8)&0xffffff, iRandom&0xff); - /* The antipenultimate character of the master journal name must + /* The antipenultimate character of the super-journal name must ** be "9" to avoid name collisions when using 8+3 filenames. */ - assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' ); - sqlite3FileSuffix3(zMainFile, zMaster); - rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res); + assert( zSuper[sqlite3Strlen30(zSuper)-3]=='9' ); + sqlite3FileSuffix3(zMainFile, zSuper); + rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res); }while( rc==SQLITE_OK && res ); if( rc==SQLITE_OK ){ - /* Open the master journal. */ - rc = sqlite3OsOpenMalloc(pVfs, zMaster, &pMaster, + /* Open the super-journal. */ + rc = sqlite3OsOpenMalloc(pVfs, zSuper, &pMaster, SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE| SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_MASTER_JOURNAL, 0 ); } if( rc!=SQLITE_OK ){ - sqlite3DbFree(db, zMaster-4); + sqlite3DbFree(db, zSuper-4); return rc; } /* Write the name of each database file in the transaction into the new - ** master journal file. If an error occurs at this point close - ** and delete the master journal file. All the individual journal files - ** still have 'null' as the master journal pointer, so they will roll + ** super-journal file. If an error occurs at this point close + ** and delete the super-journal file. All the individual journal files + ** still have 'null' as the super-journal pointer, so they will roll ** back independently if a failure occurs. */ for(i=0; i<db->nDb; i++){ @@ -2807,55 +2807,55 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){ offset += sqlite3Strlen30(zFile)+1; if( rc!=SQLITE_OK ){ sqlite3OsCloseFree(pMaster); - sqlite3OsDelete(pVfs, zMaster, 0); - sqlite3DbFree(db, zMaster-4); + sqlite3OsDelete(pVfs, zSuper, 0); + sqlite3DbFree(db, zSuper-4); return rc; } } } - /* Sync the master journal file. If the IOCAP_SEQUENTIAL device + /* Sync the super-journal file. If the IOCAP_SEQUENTIAL device ** flag is set this is not required. */ if( 0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL) && SQLITE_OK!=(rc = sqlite3OsSync(pMaster, SQLITE_SYNC_NORMAL)) ){ sqlite3OsCloseFree(pMaster); - sqlite3OsDelete(pVfs, zMaster, 0); - sqlite3DbFree(db, zMaster-4); + sqlite3OsDelete(pVfs, zSuper, 0); + sqlite3DbFree(db, zSuper-4); return rc; } /* Sync all the db files involved in the transaction. The same call - ** sets the master journal pointer in each individual journal. If - ** an error occurs here, do not delete the master journal file. + ** sets the super-journal pointer in each individual journal. If + ** an error occurs here, do not delete the super-journal file. ** ** If the error occurs during the first call to ** sqlite3BtreeCommitPhaseOne(), then there is a chance that the - ** master journal file will be orphaned. But we cannot delete it, - ** in case the master journal file name was written into the journal + ** super-journal file will be orphaned. But we cannot delete it, + ** in case the super-journal file name was written into the journal ** file before the failure occurred. */ for(i=0; rc==SQLITE_OK && i<db->nDb; i++){ Btree *pBt = db->aDb[i].pBt; if( pBt ){ - rc = sqlite3BtreeCommitPhaseOne(pBt, zMaster); + rc = sqlite3BtreeCommitPhaseOne(pBt, zSuper); } } sqlite3OsCloseFree(pMaster); assert( rc!=SQLITE_BUSY ); if( rc!=SQLITE_OK ){ - sqlite3DbFree(db, zMaster-4); + sqlite3DbFree(db, zSuper-4); return rc; } - /* Delete the master journal file. This commits the transaction. After + /* Delete the super-journal file. This commits the transaction. After ** doing this the directory is synced again before any individual ** transaction files are deleted. */ - rc = sqlite3OsDelete(pVfs, zMaster, 1); - sqlite3DbFree(db, zMaster-4); - zMaster = 0; + rc = sqlite3OsDelete(pVfs, zSuper, 1); + sqlite3DbFree(db, zSuper-4); + zSuper = 0; if( rc ){ return rc; } |