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Overview
Comment: | Add support for the "memdb" VFS and the sqlite3_memdb_ptr() and sqlite3_memdb_config() interfaces, to enable an SQLite database to be manipulated as an in-memory object. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | memdb |
Files: | files | file ages | folders |
SHA3-256: |
fb2ac2d2fa6374084f3325b41b257c7a |
User & Date: | drh 2018-01-03 01:28:46.871 |
Context
2018-01-03
| ||
12:39 | Fix typo in the Makefile for MSVC. (check-in: e5c6ade8ee user: mistachkin tags: memdb) | |
01:28 | Add support for the "memdb" VFS and the sqlite3_memdb_ptr() and sqlite3_memdb_config() interfaces, to enable an SQLite database to be manipulated as an in-memory object. (check-in: fb2ac2d2fa user: drh tags: memdb) | |
2018-01-02
| ||
21:29 | Fix code indentation. No logic changes. (check-in: e115f25834 user: drh tags: trunk) | |
Changes
Changes to Makefile.in.
︙ | ︙ | |||
176 177 178 179 180 181 182 | fts3_porter.lo fts3_snippet.lo fts3_tokenizer.lo fts3_tokenizer1.lo \ fts3_tokenize_vtab.lo \ fts3_unicode.lo fts3_unicode2.lo fts3_write.lo \ fts5.lo \ func.lo global.lo hash.lo \ icu.lo insert.lo json1.lo legacy.lo loadext.lo \ main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \ | | | 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | fts3_porter.lo fts3_snippet.lo fts3_tokenizer.lo fts3_tokenizer1.lo \ fts3_tokenize_vtab.lo \ fts3_unicode.lo fts3_unicode2.lo fts3_write.lo \ fts5.lo \ func.lo global.lo hash.lo \ icu.lo insert.lo json1.lo legacy.lo loadext.lo \ main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \ memdb.lo memjournal.lo \ mutex.lo mutex_noop.lo mutex_unix.lo mutex_w32.lo \ notify.lo opcodes.lo os.lo os_unix.lo os_win.lo \ pager.lo parse.lo pcache.lo pcache1.lo pragma.lo prepare.lo printf.lo \ random.lo resolve.lo rowset.lo rtree.lo \ sqlite3session.lo select.lo sqlite3rbu.lo status.lo stmt.lo \ table.lo threads.lo tokenize.lo treeview.lo trigger.lo \ update.lo util.lo vacuum.lo \ |
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236 237 238 239 240 241 242 243 244 245 246 247 248 249 | $(TOP)/src/main.c \ $(TOP)/src/malloc.c \ $(TOP)/src/mem0.c \ $(TOP)/src/mem1.c \ $(TOP)/src/mem2.c \ $(TOP)/src/mem3.c \ $(TOP)/src/mem5.c \ $(TOP)/src/memjournal.c \ $(TOP)/src/msvc.h \ $(TOP)/src/mutex.c \ $(TOP)/src/mutex.h \ $(TOP)/src/mutex_noop.c \ $(TOP)/src/mutex_unix.c \ $(TOP)/src/mutex_w32.c \ | > | 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 | $(TOP)/src/main.c \ $(TOP)/src/malloc.c \ $(TOP)/src/mem0.c \ $(TOP)/src/mem1.c \ $(TOP)/src/mem2.c \ $(TOP)/src/mem3.c \ $(TOP)/src/mem5.c \ $(TOP)/src/memdb.c \ $(TOP)/src/memjournal.c \ $(TOP)/src/msvc.h \ $(TOP)/src/mutex.c \ $(TOP)/src/mutex.h \ $(TOP)/src/mutex_noop.c \ $(TOP)/src/mutex_unix.c \ $(TOP)/src/mutex_w32.c \ |
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820 821 822 823 824 825 826 827 828 829 830 831 832 833 | mem3.lo: $(TOP)/src/mem3.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mem3.c mem5.lo: $(TOP)/src/mem5.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mem5.c memjournal.lo: $(TOP)/src/memjournal.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/memjournal.c mutex.lo: $(TOP)/src/mutex.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex.c mutex_noop.lo: $(TOP)/src/mutex_noop.c $(HDR) | > > > | 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 | mem3.lo: $(TOP)/src/mem3.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mem3.c mem5.lo: $(TOP)/src/mem5.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mem5.c memdb.lo: $(TOP)/src/memdb.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/memdb.c memjournal.lo: $(TOP)/src/memjournal.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/memjournal.c mutex.lo: $(TOP)/src/mutex.c $(HDR) $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex.c mutex_noop.lo: $(TOP)/src/mutex_noop.c $(HDR) |
︙ | ︙ |
Changes to Makefile.msc.
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1097 1098 1099 1100 1101 1102 1103 | fts3.lo fts3_aux.lo fts3_expr.lo fts3_hash.lo fts3_icu.lo \ fts3_porter.lo fts3_snippet.lo fts3_tokenizer.lo fts3_tokenizer1.lo \ fts3_tokenize_vtab.lo fts3_unicode.lo fts3_unicode2.lo fts3_write.lo \ fts5.lo \ func.lo global.lo hash.lo \ icu.lo insert.lo legacy.lo loadext.lo \ main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \ | | | 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 | fts3.lo fts3_aux.lo fts3_expr.lo fts3_hash.lo fts3_icu.lo \ fts3_porter.lo fts3_snippet.lo fts3_tokenizer.lo fts3_tokenizer1.lo \ fts3_tokenize_vtab.lo fts3_unicode.lo fts3_unicode2.lo fts3_write.lo \ fts5.lo \ func.lo global.lo hash.lo \ icu.lo insert.lo legacy.lo loadext.lo \ main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \ memdb.lo memjournal.lo \ mutex.lo mutex_noop.lo mutex_unix.lo mutex_w32.lo \ notify.lo opcodes.lo os.lo os_unix.lo os_win.lo \ pager.lo pcache.lo pcache1.lo pragma.lo prepare.lo printf.lo \ random.lo resolve.lo rowset.lo rtree.lo \ sqlite3session.lo select.lo sqlite3rbu.lo status.lo \ table.lo threads.lo tokenize.lo treeview.lo trigger.lo \ update.lo util.lo vacuum.lo \ |
︙ | ︙ | |||
1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 | $(TOP)\src\main.c \ $(TOP)\src\malloc.c \ $(TOP)\src\mem0.c \ $(TOP)\src\mem1.c \ $(TOP)\src\mem2.c \ $(TOP)\src\mem3.c \ $(TOP)\src\mem5.c \ $(TOP)\src\memjournal.c \ $(TOP)\src\mutex.c \ $(TOP)\src\mutex_noop.c \ $(TOP)\src\mutex_unix.c \ $(TOP)\src\mutex_w32.c \ $(TOP)\src\notify.c \ $(TOP)\src\os.c \ | > | 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 | $(TOP)\src\main.c \ $(TOP)\src\malloc.c \ $(TOP)\src\mem0.c \ $(TOP)\src\mem1.c \ $(TOP)\src\mem2.c \ $(TOP)\src\mem3.c \ $(TOP)\src\mem5.c \ $(TOP)\src\memdb.c \ $(TOP)\src\memjournal.c \ $(TOP)\src\mutex.c \ $(TOP)\src\mutex_noop.c \ $(TOP)\src\mutex_unix.c \ $(TOP)\src\mutex_w32.c \ $(TOP)\src\notify.c \ $(TOP)\src\os.c \ |
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1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 | mem3.lo: $(TOP)\src\mem3.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem3.c mem5.lo: $(TOP)\src\mem5.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem5.c memjournal.lo: $(TOP)\src\memjournal.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\memjournal.c mutex.lo: $(TOP)\src\mutex.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mutex.c mutex_noop.lo: $(TOP)\src\mutex_noop.c $(HDR) | > > > | 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 | mem3.lo: $(TOP)\src\mem3.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem3.c mem5.lo: $(TOP)\src\mem5.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mem5.c memdb.lo: $(TOP)\src\memjournal.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\memdb.c memjournal.lo: $(TOP)\src\memjournal.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\memjournal.c mutex.lo: $(TOP)\src\mutex.c $(HDR) $(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\mutex.c mutex_noop.lo: $(TOP)\src\mutex_noop.c $(HDR) |
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Changes to main.mk.
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61 62 63 64 65 66 67 | fts3.o fts3_aux.o fts3_expr.o fts3_hash.o fts3_icu.o fts3_porter.o \ fts3_snippet.o fts3_tokenizer.o fts3_tokenizer1.o \ fts3_tokenize_vtab.o \ fts3_unicode.o fts3_unicode2.o \ fts3_write.o fts5.o func.o global.o hash.o \ icu.o insert.o json1.o legacy.o loadext.o \ main.o malloc.o mem0.o mem1.o mem2.o mem3.o mem5.o \ | | | 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | fts3.o fts3_aux.o fts3_expr.o fts3_hash.o fts3_icu.o fts3_porter.o \ fts3_snippet.o fts3_tokenizer.o fts3_tokenizer1.o \ fts3_tokenize_vtab.o \ fts3_unicode.o fts3_unicode2.o \ fts3_write.o fts5.o func.o global.o hash.o \ icu.o insert.o json1.o legacy.o loadext.o \ main.o malloc.o mem0.o mem1.o mem2.o mem3.o mem5.o \ memdb.o memjournal.o \ mutex.o mutex_noop.o mutex_unix.o mutex_w32.o \ notify.o opcodes.o os.o os_unix.o os_win.o \ pager.o pcache.o pcache1.o pragma.o prepare.o printf.o \ random.o resolve.o rowset.o rtree.o \ select.o sqlite3rbu.o status.o stmt.o \ table.o threads.o tokenize.o treeview.o trigger.o \ update.o userauth.o util.o vacuum.o \ |
︙ | ︙ | |||
114 115 116 117 118 119 120 121 122 123 124 125 126 127 | $(TOP)/src/main.c \ $(TOP)/src/malloc.c \ $(TOP)/src/mem0.c \ $(TOP)/src/mem1.c \ $(TOP)/src/mem2.c \ $(TOP)/src/mem3.c \ $(TOP)/src/mem5.c \ $(TOP)/src/memjournal.c \ $(TOP)/src/msvc.h \ $(TOP)/src/mutex.c \ $(TOP)/src/mutex.h \ $(TOP)/src/mutex_noop.c \ $(TOP)/src/mutex_unix.c \ $(TOP)/src/mutex_w32.c \ | > | 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | $(TOP)/src/main.c \ $(TOP)/src/malloc.c \ $(TOP)/src/mem0.c \ $(TOP)/src/mem1.c \ $(TOP)/src/mem2.c \ $(TOP)/src/mem3.c \ $(TOP)/src/mem5.c \ $(TOP)/src/memdb.c \ $(TOP)/src/memjournal.c \ $(TOP)/src/msvc.h \ $(TOP)/src/mutex.c \ $(TOP)/src/mutex.h \ $(TOP)/src/mutex_noop.c \ $(TOP)/src/mutex_unix.c \ $(TOP)/src/mutex_w32.c \ |
︙ | ︙ |
Changes to src/main.c.
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235 236 237 238 239 240 241 242 243 244 245 246 247 248 | if( sqlite3GlobalConfig.isPCacheInit==0 ){ rc = sqlite3PcacheInitialize(); } if( rc==SQLITE_OK ){ sqlite3GlobalConfig.isPCacheInit = 1; rc = sqlite3OsInit(); } if( rc==SQLITE_OK ){ sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage); sqlite3GlobalConfig.isInit = 1; #ifdef SQLITE_EXTRA_INIT bRunExtraInit = 1; #endif | > > > > > | 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 | if( sqlite3GlobalConfig.isPCacheInit==0 ){ rc = sqlite3PcacheInitialize(); } if( rc==SQLITE_OK ){ sqlite3GlobalConfig.isPCacheInit = 1; rc = sqlite3OsInit(); } #ifdef SQLITE_ENABLE_MEMDB if( rc==SQLITE_OK ){ rc = sqlite3MemdbInit(); } #endif if( rc==SQLITE_OK ){ sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage); sqlite3GlobalConfig.isInit = 1; #ifdef SQLITE_EXTRA_INIT bRunExtraInit = 1; #endif |
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Added src/memdb.c.
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In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This is an in-memory VFS implementation. The application supplies ** a chunk of memory to hold the database file. ** ** USAGE: ** ** sqlite3_open_v2("whatever", &db, SQLITE_OPEN_READWRITE, "memdb"); ** void *sqlite3_memdb_ptr(db, "main", &sz); ** int sqlite3_memdb_config(db, "main", pMem, szData, szMem, mFlags); ** ** Flags: ** ** SQLITE_MEMDB_FREEONCLOSE Free pMem when closing the connection ** SQLITE_MEMDB_RESIZEABLE Use sqlite3_realloc64() to resize pMem */ #ifdef SQLITE_ENABLE_MEMDB #include "sqliteInt.h" /* ** Forward declaration of objects used by this utility */ typedef struct sqlite3_vfs MemVfs; typedef struct MemFile MemFile; /* Access to a lower-level VFS that (might) implement dynamic loading, ** access to randomness, etc. */ #define ORIGVFS(p) ((sqlite3_vfs*)((p)->pAppData)) /* An open file */ struct MemFile { sqlite3_file base; /* IO methods */ sqlite3_int64 sz; /* Size of the file */ sqlite3_int64 szMax; /* Space allocated to aData */ unsigned char *aData; /* content of the file */ int nMmap; /* Number of memory mapped pages */ unsigned mFlags; /* Flags */ int eLock; /* Most recent lock against this file */ }; /* ** Methods for MemFile */ static int memdbClose(sqlite3_file*); static int memdbRead(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); static int memdbWrite(sqlite3_file*,const void*,int iAmt, sqlite3_int64 iOfst); static int memdbTruncate(sqlite3_file*, sqlite3_int64 size); static int memdbSync(sqlite3_file*, int flags); static int memdbFileSize(sqlite3_file*, sqlite3_int64 *pSize); static int memdbLock(sqlite3_file*, int); static int memdbCheckReservedLock(sqlite3_file*, int *pResOut); static int memdbFileControl(sqlite3_file*, int op, void *pArg); static int memdbSectorSize(sqlite3_file*); static int memdbDeviceCharacteristics(sqlite3_file*); static int memdbShmMap(sqlite3_file*, int iPg, int pgsz, int, void volatile**); static int memdbShmLock(sqlite3_file*, int offset, int n, int flags); static void memdbShmBarrier(sqlite3_file*); static int memdbShmUnmap(sqlite3_file*, int deleteFlag); static int memdbFetch(sqlite3_file*, sqlite3_int64 iOfst, int iAmt, void **pp); static int memdbUnfetch(sqlite3_file*, sqlite3_int64 iOfst, void *p); /* ** Methods for MemVfs */ static int memdbOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *); static int memdbDelete(sqlite3_vfs*, const char *zName, int syncDir); static int memdbAccess(sqlite3_vfs*, const char *zName, int flags, int *); static int memdbFullPathname(sqlite3_vfs*, const char *zName, int, char *zOut); static void *memdbDlOpen(sqlite3_vfs*, const char *zFilename); static void memdbDlError(sqlite3_vfs*, int nByte, char *zErrMsg); static void (*memdbDlSym(sqlite3_vfs *pVfs, void *p, const char*zSym))(void); static void memdbDlClose(sqlite3_vfs*, void*); static int memdbRandomness(sqlite3_vfs*, int nByte, char *zOut); static int memdbSleep(sqlite3_vfs*, int microseconds); static int memdbCurrentTime(sqlite3_vfs*, double*); static int memdbGetLastError(sqlite3_vfs*, int, char *); static int memdbCurrentTimeInt64(sqlite3_vfs*, sqlite3_int64*); static sqlite3_vfs memdb_vfs = { 2, /* iVersion */ 0, /* szOsFile (set when registered) */ 1024, /* mxPathname */ 0, /* pNext */ "memdb", /* zName */ 0, /* pAppData (set when registered) */ memdbOpen, /* xOpen */ memdbDelete, /* xDelete */ memdbAccess, /* xAccess */ memdbFullPathname, /* xFullPathname */ memdbDlOpen, /* xDlOpen */ memdbDlError, /* xDlError */ memdbDlSym, /* xDlSym */ memdbDlClose, /* xDlClose */ memdbRandomness, /* xRandomness */ memdbSleep, /* xSleep */ memdbCurrentTime, /* xCurrentTime */ memdbGetLastError, /* xGetLastError */ memdbCurrentTimeInt64 /* xCurrentTimeInt64 */ }; static const sqlite3_io_methods memdb_io_methods = { 3, /* iVersion */ memdbClose, /* xClose */ memdbRead, /* xRead */ memdbWrite, /* xWrite */ memdbTruncate, /* xTruncate */ memdbSync, /* xSync */ memdbFileSize, /* xFileSize */ memdbLock, /* xLock */ memdbLock, /* xUnlock - same as xLock in this case */ memdbCheckReservedLock, /* xCheckReservedLock */ memdbFileControl, /* xFileControl */ memdbSectorSize, /* xSectorSize */ memdbDeviceCharacteristics, /* xDeviceCharacteristics */ memdbShmMap, /* xShmMap */ memdbShmLock, /* xShmLock */ memdbShmBarrier, /* xShmBarrier */ memdbShmUnmap, /* xShmUnmap */ memdbFetch, /* xFetch */ memdbUnfetch /* xUnfetch */ }; /* ** Close an memdb-file. ** ** The pData pointer is owned by the application, so there is nothing ** to free. */ static int memdbClose(sqlite3_file *pFile){ MemFile *p = (MemFile *)pFile; if( p->mFlags & SQLITE_MEMDB_FREEONCLOSE ) sqlite3_free(p->aData); return SQLITE_OK; } /* ** Read data from an memdb-file. */ static int memdbRead( sqlite3_file *pFile, void *zBuf, int iAmt, sqlite_int64 iOfst ){ MemFile *p = (MemFile *)pFile; if( iOfst+iAmt>p->sz ){ memset(zBuf, 0, iAmt); return SQLITE_IOERR_SHORT_READ; } memcpy(zBuf, p->aData+iOfst, iAmt); return SQLITE_OK; } /* ** Try to enlarge the memory allocation to hold at least sz bytes */ static int memdbEnlarge(MemFile *p, sqlite3_int64 newSz){ unsigned char *pNew; if( (p->mFlags & SQLITE_MEMDB_RESIZEABLE)==0 ) return SQLITE_FULL; if( p->nMmap>0 ) return SQLITE_FULL; pNew = sqlite3_realloc64(p->aData, newSz); if( pNew==0 ) return SQLITE_FULL; p->aData = pNew; p->szMax = newSz; return SQLITE_OK; } /* ** Write data to an memdb-file. */ static int memdbWrite( sqlite3_file *pFile, const void *z, int iAmt, sqlite_int64 iOfst ){ MemFile *p = (MemFile *)pFile; if( iOfst+iAmt>p->sz ){ if( iOfst+iAmt>p->szMax && memdbEnlarge(p, (iOfst+iAmt)*2) ){ return SQLITE_FULL; } if( iOfst>p->sz ) memset(p->aData+p->sz, 0, iOfst-p->sz); p->sz = iOfst+iAmt; } memcpy(p->aData+iOfst, z, iAmt); return SQLITE_OK; } /* ** Truncate an memdb-file. */ static int memdbTruncate(sqlite3_file *pFile, sqlite_int64 size){ MemFile *p = (MemFile *)pFile; if( size>p->sz ){ if( size>p->szMax && memdbEnlarge(p, size) ) return SQLITE_FULL; memset(p->aData+p->sz, 0, size-p->sz); } p->sz = size; return SQLITE_OK; } /* ** Sync an memdb-file. */ static int memdbSync(sqlite3_file *pFile, int flags){ return SQLITE_OK; } /* ** Return the current file-size of an memdb-file. */ static int memdbFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ MemFile *p = (MemFile *)pFile; *pSize = p->sz; return SQLITE_OK; } /* ** Lock an memdb-file. */ static int memdbLock(sqlite3_file *pFile, int eLock){ MemFile *p = (MemFile *)pFile; p->eLock = eLock; return SQLITE_OK; } /* ** Check if another file-handle holds a RESERVED lock on an memdb-file. */ static int memdbCheckReservedLock(sqlite3_file *pFile, int *pResOut){ *pResOut = 0; return SQLITE_OK; } /* ** File control method. For custom operations on an memdb-file. */ static int memdbFileControl(sqlite3_file *pFile, int op, void *pArg){ MemFile *p = (MemFile *)pFile; int rc = SQLITE_NOTFOUND; if( op==SQLITE_FCNTL_VFSNAME ){ *(char**)pArg = sqlite3_mprintf("memdb(%p,%lld)", p->aData, p->sz); rc = SQLITE_OK; } return rc; } /* ** Return the sector-size in bytes for an memdb-file. */ static int memdbSectorSize(sqlite3_file *pFile){ return 1024; } /* ** Return the device characteristic flags supported by an memdb-file. */ static int memdbDeviceCharacteristics(sqlite3_file *pFile){ return SQLITE_IOCAP_ATOMIC | SQLITE_IOCAP_POWERSAFE_OVERWRITE | SQLITE_IOCAP_SAFE_APPEND | SQLITE_IOCAP_SEQUENTIAL; } /* Create a shared memory file mapping */ static int memdbShmMap( sqlite3_file *pFile, int iPg, int pgsz, int bExtend, void volatile **pp ){ return SQLITE_IOERR_SHMMAP; } /* Perform locking on a shared-memory segment */ static int memdbShmLock(sqlite3_file *pFile, int offset, int n, int flags){ return SQLITE_IOERR_SHMLOCK; } /* Memory barrier operation on shared memory */ static void memdbShmBarrier(sqlite3_file *pFile){ return; } /* Unmap a shared memory segment */ static int memdbShmUnmap(sqlite3_file *pFile, int deleteFlag){ return SQLITE_OK; } /* Fetch a page of a memory-mapped file */ static int memdbFetch( sqlite3_file *pFile, sqlite3_int64 iOfst, int iAmt, void **pp ){ MemFile *p = (MemFile *)pFile; p->nMmap++; *pp = (void*)(p->aData + iOfst); return SQLITE_OK; } /* Release a memory-mapped page */ static int memdbUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){ MemFile *p = (MemFile *)pFile; p->nMmap--; return SQLITE_OK; } /* ** Open an mem file handle. */ static int memdbOpen( sqlite3_vfs *pVfs, const char *zName, sqlite3_file *pFile, int flags, int *pOutFlags ){ MemFile *p = (MemFile*)pFile; memset(p, 0, sizeof(*p)); if( (flags & SQLITE_OPEN_MAIN_DB)==0 ) return SQLITE_CANTOPEN; p->mFlags = SQLITE_MEMDB_RESIZEABLE | SQLITE_MEMDB_FREEONCLOSE; *pOutFlags = flags | SQLITE_OPEN_MEMORY; p->base.pMethods = &memdb_io_methods; return SQLITE_OK; } /* ** Delete the file located at zPath. If the dirSync argument is true, ** ensure the file-system modifications are synced to disk before ** returning. */ static int memdbDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ return SQLITE_IOERR_DELETE; } /* ** Test for access permissions. Return true if the requested permission ** is available, or false otherwise. */ static int memdbAccess( sqlite3_vfs *pVfs, const char *zPath, int flags, int *pResOut ){ *pResOut = 0; return SQLITE_OK; } /* ** Populate buffer zOut with the full canonical pathname corresponding ** to the pathname in zPath. zOut is guaranteed to point to a buffer ** of at least (INST_MAX_PATHNAME+1) bytes. */ static int memdbFullPathname( sqlite3_vfs *pVfs, const char *zPath, int nOut, char *zOut ){ sqlite3_snprintf(nOut, zOut, "%s", zPath); return SQLITE_OK; } /* ** Open the dynamic library located at zPath and return a handle. */ static void *memdbDlOpen(sqlite3_vfs *pVfs, const char *zPath){ return ORIGVFS(pVfs)->xDlOpen(ORIGVFS(pVfs), zPath); } /* ** Populate the buffer zErrMsg (size nByte bytes) with a human readable ** utf-8 string describing the most recent error encountered associated ** with dynamic libraries. */ static void memdbDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ ORIGVFS(pVfs)->xDlError(ORIGVFS(pVfs), nByte, zErrMsg); } /* ** Return a pointer to the symbol zSymbol in the dynamic library pHandle. */ static void (*memdbDlSym(sqlite3_vfs *pVfs, void *p, const char *zSym))(void){ return ORIGVFS(pVfs)->xDlSym(ORIGVFS(pVfs), p, zSym); } /* ** Close the dynamic library handle pHandle. */ static void memdbDlClose(sqlite3_vfs *pVfs, void *pHandle){ ORIGVFS(pVfs)->xDlClose(ORIGVFS(pVfs), pHandle); } /* ** Populate the buffer pointed to by zBufOut with nByte bytes of ** random data. */ static int memdbRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ return ORIGVFS(pVfs)->xRandomness(ORIGVFS(pVfs), nByte, zBufOut); } /* ** Sleep for nMicro microseconds. Return the number of microseconds ** actually slept. */ static int memdbSleep(sqlite3_vfs *pVfs, int nMicro){ return ORIGVFS(pVfs)->xSleep(ORIGVFS(pVfs), nMicro); } /* ** Return the current time as a Julian Day number in *pTimeOut. */ static int memdbCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){ return ORIGVFS(pVfs)->xCurrentTime(ORIGVFS(pVfs), pTimeOut); } static int memdbGetLastError(sqlite3_vfs *pVfs, int a, char *b){ return ORIGVFS(pVfs)->xGetLastError(ORIGVFS(pVfs), a, b); } static int memdbCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p){ return ORIGVFS(pVfs)->xCurrentTimeInt64(ORIGVFS(pVfs), p); } /* ** Translate a database connection pointer and schema name into a ** MemFile pointer. */ static MemFile *memdbFromDbSchema(sqlite3 *db, const char *zSchema){ MemFile *p = 0; int rc = sqlite3_file_control(db, zSchema, SQLITE_FCNTL_FILE_POINTER, &p); if( rc ) return 0; if( p->base.pMethods!=&memdb_io_methods ) return 0; return p; } /* ** Return a pointer to the memory used to hold the database. ** Return NULL if the arguments do not describe a memdb database. */ void *sqlite3_memdb_ptr(sqlite3 *db, const char *zSchema, sqlite3_int64 *pSz){ MemFile *p = memdbFromDbSchema(db, zSchema); if( p==0 ){ *pSz = 0; return 0; } *pSz = p->sz; return p->aData; } /* ** Reconfigure a memdb database. */ int sqlite3_memdb_config( sqlite3 *db, const char *zSchema, void *aData, sqlite3_int64 sz, sqlite3_int64 szMax, unsigned int mFlags ){ MemFile *p = memdbFromDbSchema(db, zSchema); if( p==0 ) return SQLITE_ERROR; if( p->eLock!=SQLITE_LOCK_NONE || p->nMmap>0 ) return SQLITE_BUSY; if( p->mFlags & SQLITE_MEMDB_FREEONCLOSE ) sqlite3_free(p->aData); p->aData = aData; p->sz = sz; p->szMax = szMax; p->mFlags = mFlags; return SQLITE_OK; } /* ** This routine is called when the extension is loaded. ** Register the new VFS. */ int sqlite3MemdbInit(void){ memdb_vfs.pAppData = sqlite3_vfs_find(0); memdb_vfs.szOsFile = sizeof(MemFile); return sqlite3_vfs_register(&memdb_vfs, 0); } #endif /* SQLITE_ENABLE_MEMDB */ |
Changes to src/pager.c.
︙ | ︙ | |||
4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 | void (*xReinit)(DbPage*) /* Function to reinitialize pages */ ){ u8 *pPtr; Pager *pPager = 0; /* Pager object to allocate and return */ int rc = SQLITE_OK; /* Return code */ int tempFile = 0; /* True for temp files (incl. in-memory files) */ int memDb = 0; /* True if this is an in-memory file */ int readOnly = 0; /* True if this is a read-only file */ int journalFileSize; /* Bytes to allocate for each journal fd */ char *zPathname = 0; /* Full path to database file */ int nPathname = 0; /* Number of bytes in zPathname */ int useJournal = (flags & PAGER_OMIT_JOURNAL)==0; /* False to omit journal */ int pcacheSize = sqlite3PcacheSize(); /* Bytes to allocate for PCache */ u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE; /* Default page size */ | > | 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 | void (*xReinit)(DbPage*) /* Function to reinitialize pages */ ){ u8 *pPtr; Pager *pPager = 0; /* Pager object to allocate and return */ int rc = SQLITE_OK; /* Return code */ int tempFile = 0; /* True for temp files (incl. in-memory files) */ int memDb = 0; /* True if this is an in-memory file */ int memJM = 0; /* Memory journal mode */ int readOnly = 0; /* True if this is a read-only file */ int journalFileSize; /* Bytes to allocate for each journal fd */ char *zPathname = 0; /* Full path to database file */ int nPathname = 0; /* Number of bytes in zPathname */ int useJournal = (flags & PAGER_OMIT_JOURNAL)==0; /* False to omit journal */ int pcacheSize = sqlite3PcacheSize(); /* Bytes to allocate for PCache */ u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE; /* Default page size */ |
︙ | ︙ | |||
4817 4818 4819 4820 4821 4822 4823 | /* Open the pager file. */ if( zFilename && zFilename[0] ){ int fout = 0; /* VFS flags returned by xOpen() */ rc = sqlite3OsOpen(pVfs, pPager->zFilename, pPager->fd, vfsFlags, &fout); assert( !memDb ); | > | | 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 | /* Open the pager file. */ if( zFilename && zFilename[0] ){ int fout = 0; /* VFS flags returned by xOpen() */ rc = sqlite3OsOpen(pVfs, pPager->zFilename, pPager->fd, vfsFlags, &fout); assert( !memDb ); memJM = (fout&SQLITE_OPEN_MEMORY)!=0; readOnly = (fout&SQLITE_OPEN_READONLY)!=0; /* If the file was successfully opened for read/write access, ** choose a default page size in case we have to create the ** database file. The default page size is the maximum of: ** ** + SQLITE_DEFAULT_PAGE_SIZE, ** + The value returned by sqlite3OsSectorSize() |
︙ | ︙ | |||
4948 4949 4950 4951 4952 4953 4954 | /* pPager->pLast = 0; */ pPager->nExtra = (u16)nExtra; pPager->journalSizeLimit = SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT; assert( isOpen(pPager->fd) || tempFile ); setSectorSize(pPager); if( !useJournal ){ pPager->journalMode = PAGER_JOURNALMODE_OFF; | | | 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 | /* pPager->pLast = 0; */ pPager->nExtra = (u16)nExtra; pPager->journalSizeLimit = SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT; assert( isOpen(pPager->fd) || tempFile ); setSectorSize(pPager); if( !useJournal ){ pPager->journalMode = PAGER_JOURNALMODE_OFF; }else if( memDb || memJM ){ pPager->journalMode = PAGER_JOURNALMODE_MEMORY; } /* pPager->xBusyHandler = 0; */ /* pPager->pBusyHandlerArg = 0; */ pPager->xReiniter = xReinit; setGetterMethod(pPager); /* memset(pPager->aHash, 0, sizeof(pPager->aHash)); */ |
︙ | ︙ |
Changes to src/sqlite.h.in.
︙ | ︙ | |||
8753 8754 8755 8756 8757 8758 8759 8760 8761 8762 8763 8764 8765 8766 | ** sqlite3_snapshot_open(). It is an error if there is already a read ** transaction open on the database, or if the database is not a wal mode ** database. ** ** SQLITE_OK is returned if successful, or an SQLite error code otherwise. */ SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb); /* ** Undo the hack that converts floating point types to integer for ** builds on processors without floating point support. */ #ifdef SQLITE_OMIT_FLOATING_POINT # undef double | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 8753 8754 8755 8756 8757 8758 8759 8760 8761 8762 8763 8764 8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779 8780 8781 8782 8783 8784 8785 8786 8787 8788 8789 8790 8791 8792 8793 8794 8795 8796 8797 8798 8799 8800 8801 8802 8803 8804 8805 8806 | ** sqlite3_snapshot_open(). It is an error if there is already a read ** transaction open on the database, or if the database is not a wal mode ** database. ** ** SQLITE_OK is returned if successful, or an SQLite error code otherwise. */ SQLITE_EXPERIMENTAL int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb); /* ** CAPI3REF: Retrieve the current MEMDB buffer ** EXPERIMENTAL ** ** This interface is only available when SQLite is compiled ** with SQLITE_ENABLE_MEMDB. ** ** The sqlite3_memdb_ptr(D,S,P) interface returns a pointer to the ** memory buffer that is the database file used for [database connection] D ** and schema S. If schema S of database connection D is not a MEMDB ** database, then this routine returns NULL. If P is not NULL, then it must ** be a pointer to a 64-bit signed integer into which the size of the ** database file is written. */ SQLITE_EXPERIMENTAL void *sqlite3_memdb_ptr(sqlite3*,const char*,sqlite3_int64*); /* ** CAPI3REF: Set the current MEMDB buffer ** EXPERIMENTAL ** ** This interface is only available when SQLite is compiled ** with SQLITE_ENABLE_MEMDB. ** ** The sqlite3_memdb_config(D,S,P,N,M,F) interface initializes a MEMDB database. ** The database identified by D and S must not be in active use when this ** interface is called, or [SQLITE_BUSY] is returned. */ SQLITE_EXPERIMENTAL int sqlite3_memdb_config(sqlite3*,const char*,void*,sqlite3_int64,sqlite3_int64,unsigned); /* ** CAPI3REF: Flags for configuring MEMDB databases ** EXPERIMENTAL ** ** The following are allowed values for the 6th argument (the "flags" ** argument) of the [sqlite3_memdb_config()] interface. */ #define SQLITE_MEMDB_FREEONCLOSE 0x001 /* Free the memory buffer on close */ #define SQLITE_MEMDB_RESIZEABLE 0x002 /* Resize using sqlite3_realloc64() */ /* ** Undo the hack that converts floating point types to integer for ** builds on processors without floating point support. */ #ifdef SQLITE_OMIT_FLOATING_POINT # undef double |
︙ | ︙ |
Changes to src/sqliteInt.h.
︙ | ︙ | |||
4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 | void *sqlite3HexToBlob(sqlite3*, const char *z, int n); u8 sqlite3HexToInt(int h); int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); #if defined(SQLITE_NEED_ERR_NAME) const char *sqlite3ErrName(int); #endif const char *sqlite3ErrStr(int); int sqlite3ReadSchema(Parse *pParse); CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr); | > > > > | 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 | void *sqlite3HexToBlob(sqlite3*, const char *z, int n); u8 sqlite3HexToInt(int h); int sqlite3TwoPartName(Parse *, Token *, Token *, Token **); #if defined(SQLITE_NEED_ERR_NAME) const char *sqlite3ErrName(int); #endif #ifdef SQLITE_ENABLE_MEMDB int sqlite3MemdbInit(void); #endif const char *sqlite3ErrStr(int); int sqlite3ReadSchema(Parse *pParse); CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int); CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName); CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr); CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr); |
︙ | ︙ |
Changes to src/tclsqlite.c.
︙ | ︙ | |||
1848 1849 1850 1851 1852 1853 1854 | static const char *DB_strs[] = { "authorizer", "backup", "busy", "cache", "changes", "close", "collate", "collation_needed", "commit_hook", "complete", "copy", "enable_load_extension", "errorcode", "eval", "exists", "function", "incrblob", "interrupt", | | | | | | | | < | | | | | | | | 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 | static const char *DB_strs[] = { "authorizer", "backup", "busy", "cache", "changes", "close", "collate", "collation_needed", "commit_hook", "complete", "copy", "enable_load_extension", "errorcode", "eval", "exists", "function", "incrblob", "interrupt", "last_insert_rowid", "memdb", "nullvalue", "onecolumn", "preupdate", "profile", "progress", "rekey", "restore", "rollback_hook", "status", "timeout", "total_changes", "trace", "trace_v", "transaction", "unlock_notify", "update_hook", "version", "wal_hook", 0 }; enum DB_enum { DB_AUTHORIZER, DB_BACKUP, DB_BUSY, DB_CACHE, DB_CHANGES, DB_CLOSE, DB_COLLATE, DB_COLLATION_NEEDED, DB_COMMIT_HOOK, DB_COMPLETE, DB_COPY, DB_ENABLE_LOAD_EXTENSION, DB_ERRORCODE, DB_EVAL, DB_EXISTS, DB_FUNCTION, DB_INCRBLOB, DB_INTERRUPT, DB_LAST_INSERT_ROWID, DB_MEMDB, DB_NULLVALUE, DB_ONECOLUMN, DB_PREUPDATE, DB_PROFILE, DB_PROGRESS, DB_REKEY, DB_RESTORE, DB_ROLLBACK_HOOK, DB_STATUS, DB_TIMEOUT, DB_TOTAL_CHANGES, DB_TRACE, DB_TRACE_V2, DB_TRANSACTION, DB_UNLOCK_NOTIFY, DB_UPDATE_HOOK, DB_VERSION, DB_WAL_HOOK }; /* don't leave trailing commas on DB_enum, it confuses the AIX xlc compiler */ if( objc<2 ){ Tcl_WrongNumArgs(interp, 1, objv, "SUBCOMMAND ..."); return TCL_ERROR; } |
︙ | ︙ | |||
2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 | ** Interrupt the execution of the inner-most SQL interpreter. This ** causes the SQL statement to return an error of SQLITE_INTERRUPT. */ case DB_INTERRUPT: { sqlite3_interrupt(pDb->db); break; } /* ** $db nullvalue ?STRING? ** ** Change text used when a NULL comes back from the database. If ?STRING? ** is not present, then the current string used for NULL is returned. ** If STRING is present, then STRING is returned. | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 | ** Interrupt the execution of the inner-most SQL interpreter. This ** causes the SQL statement to return an error of SQLITE_INTERRUPT. */ case DB_INTERRUPT: { sqlite3_interrupt(pDb->db); break; } /* ** $db memdb DATABASE ?BLOB? ** ** Set or query the content of a MEMDB database. ** */ case DB_MEMDB: { #ifndef SQLITE_ENABLE_MEMDB Tcl_AppendResult(interp, "MEMDB not available in this build", (char*)0); rc = TCL_ERROR; #else const char *zSchema = Tcl_GetString(objv[2]); sqlite3_int64 sz = 0; unsigned char *pData; if( objc==3 ){ pData = sqlite3_memdb_ptr(pDb->db, zSchema, &sz); if( pData==0 ){ Tcl_AppendResult(interp, "not a MEMDB database", (char*)0); rc = TCL_ERROR; }else{ Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(pData,sz)); } }else if( objc==4 ){ int len = 0, xrc; unsigned char *pBA = Tcl_GetByteArrayFromObj(objv[3], &len); pData = sqlite3_malloc64( len ); if( pData==0 ){ Tcl_AppendResult(interp, "out of memory", (char*)0); rc = TCL_ERROR; }else{ memcpy(pData, pBA, len); xrc = sqlite3_memdb_config(pDb->db, zSchema, pData, len, len, SQLITE_MEMDB_FREEONCLOSE|SQLITE_MEMDB_RESIZEABLE); if( xrc ){ sqlite3_free(pData); Tcl_AppendResult(interp, "unable to set MEMDB content", (char*)0); rc = TCL_ERROR; } } }else{ Tcl_WrongNumArgs(interp, 2, objv, "?SCRIPT?"); rc = TCL_ERROR; } #endif break; } /* ** $db nullvalue ?STRING? ** ** Change text used when a NULL comes back from the database. If ?STRING? ** is not present, then the current string used for NULL is returned. ** If STRING is present, then STRING is returned. |
︙ | ︙ |
Changes to src/test_config.c.
︙ | ︙ | |||
143 144 145 146 147 148 149 150 151 152 153 154 155 156 | #endif #ifdef SQLITE_ENABLE_HIDDEN_COLUMNS Tcl_SetVar2(interp, "sqlite_options", "hiddencolumns", "1", TCL_GLOBAL_ONLY); #else Tcl_SetVar2(interp, "sqlite_options", "hiddencolumns", "0", TCL_GLOBAL_ONLY); #endif #ifdef SQLITE_ENABLE_MEMSYS3 Tcl_SetVar2(interp, "sqlite_options", "mem3", "1", TCL_GLOBAL_ONLY); #else Tcl_SetVar2(interp, "sqlite_options", "mem3", "0", TCL_GLOBAL_ONLY); #endif | > > > > > > | 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 | #endif #ifdef SQLITE_ENABLE_HIDDEN_COLUMNS Tcl_SetVar2(interp, "sqlite_options", "hiddencolumns", "1", TCL_GLOBAL_ONLY); #else Tcl_SetVar2(interp, "sqlite_options", "hiddencolumns", "0", TCL_GLOBAL_ONLY); #endif #ifdef SQLITE_ENABLE_MEMDB Tcl_SetVar2(interp, "sqlite_options", "memdb", "1", TCL_GLOBAL_ONLY); #else Tcl_SetVar2(interp, "sqlite_options", "memdb", "0", TCL_GLOBAL_ONLY); #endif #ifdef SQLITE_ENABLE_MEMSYS3 Tcl_SetVar2(interp, "sqlite_options", "mem3", "1", TCL_GLOBAL_ONLY); #else Tcl_SetVar2(interp, "sqlite_options", "mem3", "0", TCL_GLOBAL_ONLY); #endif |
︙ | ︙ |
Added test/memdb1.test.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | # 2018-01-02 # # The author disclaims copyright to this source code. In place of # a legal notice, here is a blessing: # # May you do good and not evil. # May you find forgiveness for yourself and forgive others. # May you share freely, never taking more than you give. # #*********************************************************************** # This file implements regression tests for SQLite library. The # focus of this file is the "memdb" VFS # set testdir [file dirname $argv0] source $testdir/tester.tcl set testprefix memdb1 do_not_use_codec ifcapable !memdb { finish_test return } # Create a MEMDB and populate it with some dummy data. # Then extract the database into the $::db1 variable. # Verify that the size of $::db1 is the same as the size of # the database. # db close sqlite3 db dummy -vfs memdb unset -nocomplain db1 unset -nocomplain sz1 unset -nocomplain pgsz do_test 100 { db eval { CREATE TABLE t1(a,b); INSERT INTO t1 VALUES(1,2); } set ::pgsz [db one {PRAGMA page_size}] set ::sz1 [expr {$::pgsz*[db one {PRAGMA page_count}]}] set ::db1 [db memdb main] expr {[string length $::db1]==$::sz1} } 1 # Create a new MEMDB and initialize it to the content of $::db1 # Verify that the content is the same. # db close sqlite3 db dummy2 -vfs memdb db memdb main $db1 do_execsql_test 110 { SELECT * FROM t1; } {1 2} finish_test |
Changes to tool/mksqlite3c.tcl.
︙ | ︙ | |||
316 317 318 319 320 321 322 323 324 325 326 327 328 329 | utf.c util.c hash.c opcodes.c os_unix.c os_win.c bitvec.c pcache.c pcache1.c rowset.c pager.c wal.c | > | 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 | utf.c util.c hash.c opcodes.c os_unix.c os_win.c memdb.c bitvec.c pcache.c pcache1.c rowset.c pager.c wal.c |
︙ | ︙ |