diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mutex_w32.c | 16 | ||||
| -rw-r--r-- | src/os_unix.c | 1 | ||||
| -rw-r--r-- | src/os_win.c | 751 | ||||
| -rw-r--r-- | src/test1.c | 36 | ||||
| -rw-r--r-- | src/test_config.c | 6 | ||||
| -rw-r--r-- | src/test_quota.c | 4 |
6 files changed, 500 insertions, 314 deletions
diff --git a/src/mutex_w32.c b/src/mutex_w32.c index 7eb5b50be..7b411018f 100644 --- a/src/mutex_w32.c +++ b/src/mutex_w32.c @@ -314,22 +314,12 @@ static int winMutexTry(sqlite3_mutex *p){ /* ** The sqlite3_mutex_try() routine is very rarely used, and when it ** is used it is merely an optimization. So it is OK for it to always - ** fail. - ** - ** The TryEnterCriticalSection() interface is only available on WinNT. - ** And some windows compilers complain if you try to use it without - ** first doing some #defines that prevent SQLite from building on Win98. - ** For that reason, we will omit this optimization for now. See - ** ticket #2685. + ** fail on some platforms. But - it is required for ENABLE_SETLK_TIMEOUT + ** builds. */ #if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0400 assert( winMutex_isInit==1 ); - assert( winMutex_isNt>=-1 && winMutex_isNt<=1 ); - if( winMutex_isNt<0 ){ - winMutex_isNt = sqlite3_win32_is_nt(); - } - assert( winMutex_isNt==0 || winMutex_isNt==1 ); - if( winMutex_isNt && TryEnterCriticalSection(&p->mutex) ){ + if( sqlite3_win32_is_nt() && TryEnterCriticalSection(&p->mutex) ){ #ifdef SQLITE_DEBUG p->owner = tid; p->nRef++; diff --git a/src/os_unix.c b/src/os_unix.c index b1996278c..77855a8dd 100644 --- a/src/os_unix.c +++ b/src/os_unix.c @@ -4290,7 +4290,6 @@ static int unixGetpagesize(void){ ** ** nRef ** -** The following fields are read-only after the object is created: ** ** hShm ** zFilename diff --git a/src/os_win.c b/src/os_win.c index 8ce1647f6..a02b0c535 100644 --- a/src/os_win.c +++ b/src/os_win.c @@ -287,6 +287,9 @@ struct winFile { sqlite3_int64 mmapSize; /* Size of mapped region */ sqlite3_int64 mmapSizeMax; /* Configured FCNTL_MMAP_SIZE value */ #endif +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + unsigned iBusyTimeout; /* Wait this many millisec on locks */ +#endif }; /* @@ -1453,6 +1456,9 @@ int sqlite3_win32_is_nt(void){ } return osInterlockedCompareExchange(&sqlite3_os_type, 2, 2)==2; #elif SQLITE_TEST +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + return 1; +#endif return osInterlockedCompareExchange(&sqlite3_os_type, 2, 2)==2; #else /* @@ -2541,6 +2547,77 @@ static BOOL winLockFile( } /* +** Lock a region of nByte bytes starting at offset offset of file hFile. +** Take an EXCLUSIVE lock if parameter bExclusive is true, or a SHARED lock +** otherwise. If nMs is greater than zero and the lock cannot be obtained +** immediately, block for that many ms before giving up. +** +** This function returns SQLITE_OK if the lock is obtained successfully. If +** some other process holds the lock, SQLITE_BUSY is returned if nMs==0, or +** SQLITE_BUSY_TIMEOUT otherwise. Or, if an error occurs, SQLITE_IOERR. +*/ +static int winLockFileTimeout( + HANDLE hFile, + DWORD offset, + DWORD nByte, + int bExcl, + int nMs +){ + DWORD flags = LOCKFILE_FAIL_IMMEDIATELY | (bExcl?LOCKFILE_EXCLUSIVE_LOCK:0); + int rc = SQLITE_OK; + BOOL ret; + +#if !defined(SQLITE_ENABLE_SETLK_TIMEOUT) + ret = winLockFile(&hFile, flags, offset, 0, nByte, 0); +#else + if( !osIsNT() ){ + ret = winLockFile(&hFile, flags, offset, 0, nByte, 0); + }else{ + OVERLAPPED ovlp; + memset(&ovlp, 0, sizeof(OVERLAPPED)); + ovlp.Offset = offset; + + if( nMs>0 ){ + ovlp.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); + if( ovlp.hEvent==NULL ){ + return SQLITE_IOERR; + } + flags &= ~LOCKFILE_FAIL_IMMEDIATELY; + } + + ret = osLockFileEx(hFile, flags, 0, nByte, 0, &ovlp); + + if( !ret && nMs>0 && GetLastError()==ERROR_IO_PENDING ){ + DWORD res = WaitForSingleObject(ovlp.hEvent, (DWORD)nMs); + if( res==WAIT_OBJECT_0 ){ + /* Successfully obtained the lock. */ + ret = TRUE; + }else{ + if( res==WAIT_TIMEOUT ){ + rc = SQLITE_BUSY_TIMEOUT; + }else{ + /* Some other error has occurred */ + rc = SQLITE_IOERR; + } + + /* Cancel the LockFileEx() if it is still pending. */ + CancelIo(hFile); + } + } + + if( nMs>0 ){ + osCloseHandle(ovlp.hEvent); + } + } +#endif /* defined(SQLITE_ENABLE_SETLK_TIMEOUT) */ + + if( rc==SQLITE_OK && !ret ){ + rc = SQLITE_BUSY; + } + return rc; +} + +/* ** Unlock a file region. */ static BOOL winUnlockFile( @@ -2571,6 +2648,11 @@ static BOOL winUnlockFile( #endif } +static int winHandleUnlock(HANDLE h, int iOff, int nByte){ + BOOL ret = winUnlockFile(&h, iOff, 0, nByte, 0); + return (ret ? SQLITE_OK : SQLITE_IOERR_UNLOCK); +} + /***************************************************************************** ** The next group of routines implement the I/O methods specified ** by the sqlite3_io_methods object. @@ -2584,66 +2666,70 @@ static BOOL winUnlockFile( #endif /* -** Move the current position of the file handle passed as the first -** argument to offset iOffset within the file. If successful, return 0. -** Otherwise, set pFile->lastErrno and return non-zero. +** Seek the file handle h to offset nByte of the file. +** +** If successful, return SQLITE_OK. Or, if an error occurs, return an SQLite +** error code. */ -static int winSeekFile(winFile *pFile, sqlite3_int64 iOffset){ +static int winHandleSeek(HANDLE h, sqlite3_int64 iOffset){ + int rc = SQLITE_OK; /* Return value */ + #if !SQLITE_OS_WINRT LONG upperBits; /* Most sig. 32 bits of new offset */ LONG lowerBits; /* Least sig. 32 bits of new offset */ DWORD dwRet; /* Value returned by SetFilePointer() */ - DWORD lastErrno; /* Value returned by GetLastError() */ - - OSTRACE(("SEEK file=%p, offset=%lld\n", pFile->h, iOffset)); upperBits = (LONG)((iOffset>>32) & 0x7fffffff); lowerBits = (LONG)(iOffset & 0xffffffff); + dwRet = osSetFilePointer(h, lowerBits, &upperBits, FILE_BEGIN); + /* API oddity: If successful, SetFilePointer() returns a dword ** containing the lower 32-bits of the new file-offset. Or, if it fails, ** it returns INVALID_SET_FILE_POINTER. However according to MSDN, ** INVALID_SET_FILE_POINTER may also be a valid new offset. So to determine ** whether an error has actually occurred, it is also necessary to call - ** GetLastError(). - */ - dwRet = osSetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN); - - if( (dwRet==INVALID_SET_FILE_POINTER - && ((lastErrno = osGetLastError())!=NO_ERROR)) ){ - pFile->lastErrno = lastErrno; - winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno, - "winSeekFile", pFile->zPath); - OSTRACE(("SEEK file=%p, rc=SQLITE_IOERR_SEEK\n", pFile->h)); - return 1; + ** GetLastError(). */ + if( dwRet==INVALID_SET_FILE_POINTER ){ + DWORD lastErrno = osGetLastError(); + if( lastErrno!=NO_ERROR ){ + rc = SQLITE_IOERR_SEEK; + } } - - OSTRACE(("SEEK file=%p, rc=SQLITE_OK\n", pFile->h)); - return 0; #else - /* - ** Same as above, except that this implementation works for WinRT. - */ - + /* This implementation works for WinRT. */ LARGE_INTEGER x; /* The new offset */ BOOL bRet; /* Value returned by SetFilePointerEx() */ x.QuadPart = iOffset; - bRet = osSetFilePointerEx(pFile->h, x, 0, FILE_BEGIN); + bRet = osSetFilePointerEx(h, x, 0, FILE_BEGIN); if(!bRet){ - pFile->lastErrno = osGetLastError(); - winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno, - "winSeekFile", pFile->zPath); - OSTRACE(("SEEK file=%p, rc=SQLITE_IOERR_SEEK\n", pFile->h)); - return 1; + rc = SQLITE_IOERR_SEEK; } - - OSTRACE(("SEEK file=%p, rc=SQLITE_OK\n", pFile->h)); - return 0; #endif + + OSTRACE(("SEEK file=%p, offset=%lld rc=%s\n", h, iOffset, sqlite3ErrName(rc))); + return rc; +} + +/* +** Move the current position of the file handle passed as the first +** argument to offset iOffset within the file. If successful, return 0. +** Otherwise, set pFile->lastErrno and return non-zero. +*/ +static int winSeekFile(winFile *pFile, sqlite3_int64 iOffset){ + int rc; + + rc = winHandleSeek(pFile->h, iOffset); + if( rc!=SQLITE_OK ){ + pFile->lastErrno = osGetLastError(); + winLogError(rc, pFile->lastErrno, "winSeekFile", pFile->zPath); + } + return rc; } + #if SQLITE_MAX_MMAP_SIZE>0 /* Forward references to VFS helper methods used for memory mapped files */ static int winMapfile(winFile*, sqlite3_int64); @@ -2904,6 +2990,52 @@ static int winWrite( } /* +** Truncate the file opened by handle h to nByte bytes in size. +*/ +static int winHandleTruncate(HANDLE h, sqlite3_int64 nByte){ + int rc = SQLITE_OK; /* Return code */ + rc = winHandleSeek(h, nByte); + if( rc==SQLITE_OK ){ + if( 0==osSetEndOfFile(h) ){ + rc = SQLITE_IOERR_TRUNCATE; + } + } + return rc; +} + +/* +** Determine the size in bytes of the file opened by the handle passed as +** the first argument. +*/ +static int winHandleSize(HANDLE h, sqlite3_int64 *pnByte){ + int rc = SQLITE_OK; + +#if SQLITE_OS_WINRT + FILE_STANDARD_INFO info; + BOOL b; + b = osGetFileInformationByHandleEx(h, FileStandardInfo, &info, sizeof(info)); + if( b ){ + *pnByte = info.EndOfFile.QuadPart; + }else{ + rc = SQLITE_IOERR_FSTAT; + } +#else + DWORD upperBits = 0; + DWORD lowerBits = 0; + DWORD lastErrno = 0; + + lowerBits = osGetFileSize(h, &upperBits); + *pnByte = (((sqlite3_int64)upperBits)<<32) + lowerBits; + + if( lowerBits==INVALID_FILE_SIZE && osGetLastError()!=NO_ERROR ){ + rc = SQLITE_IOERR_FSTAT; + } +#endif + + return rc; +} + +/* ** Truncate an open file to a specified size */ static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ @@ -3640,6 +3772,22 @@ static int winFileControl(sqlite3_file *id, int op, void *pArg){ return rc; } #endif + +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + case SQLITE_FCNTL_LOCK_TIMEOUT: { + int iOld = pFile->iBusyTimeout; +#if SQLITE_ENABLE_SETLK_TIMEOUT==1 + pFile->iBusyTimeout = *(int*)pArg; +#elif SQLITE_ENABLE_SETLK_TIMEOUT==2 + pFile->iBusyTimeout = !!(*(int*)pArg); +#else +# error "SQLITE_ENABLE_SETLK_TIMEOUT must be set to 1 or 2" +#endif + *(int*)pArg = iOld; + return SQLITE_OK; + } +#endif + } OSTRACE(("FCNTL file=%p, rc=SQLITE_NOTFOUND\n", pFile->h)); return SQLITE_NOTFOUND; @@ -3720,23 +3868,41 @@ static int winShmMutexHeld(void) { ** ** The following fields are read-only after the object is created: ** -** fid +** hFile ** zFilename ** ** Either winShmNode.mutex must be held or winShmNode.nRef==0 and ** winShmMutexHeld() is true when reading or writing any other field ** in this structure. ** +** aMutex[SQLITE_SHM_NLOCK]: +** Normally, when SQLITE_ENABLE_SETLK_TIMEOUT is not defined, mutex +** winShmNode.mutex is used to serialize calls to the xShmLock() +** method. +** +** For SQLITE_ENABLE_SETLK_TIMEOUT builds, xShmLock() only takes the +** mutexes in the aMutex[] array that correspond to locks being taken +** or released. This means that: +** +** * Modifying the winShmNode.pFirst list requires holding *all* +** the locks in the aMutex[] array. +** +** * Reads and writes to winShm.sharedMask and winShm.exclMask must +** use AtomicLoad() and AtomicStore(). This is because it may be +** read by other threads while it is being modified. +** +** TODO: winShmNode.mutex is held for the space of time when LockFileEx() +** is called on winShmNode.hFile. */ struct winShmNode { sqlite3_mutex *mutex; /* Mutex to access this object */ char *zFilename; /* Name of the file */ - winFile hFile; /* File handle from winOpen */ + HANDLE hSharedShm; /* File handle open on zFilename */ + int isUnlocked; /* DMS lock has not yet been obtained */ + int isReadonly; /* True if read-only */ int szRegion; /* Size of shared-memory regions */ int nRegion; /* Size of array apRegion */ - u8 isReadonly; /* True if read-only */ - u8 isUnlocked; /* True if no DMS lock held */ struct ShmRegion { HANDLE hMap; /* File handle from CreateFileMapping */ @@ -3747,6 +3913,7 @@ struct winShmNode { int nRef; /* Number of winShm objects pointing to this */ winShm *pFirst; /* All winShm objects pointing to this */ winShmNode *pNext; /* Next in list of all winShmNode objects */ + #if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) u8 nextShmId; /* Next available winShm.id value */ #endif @@ -3775,9 +3942,10 @@ static winShmNode *winShmNodeList = 0; struct winShm { winShmNode *pShmNode; /* The underlying winShmNode object */ winShm *pNext; /* Next winShm with the same winShmNode */ - u8 hasMutex; /* True if holding the winShmNode mutex */ u16 sharedMask; /* Mask of shared locks held */ u16 exclMask; /* Mask of exclusive locks held */ + HANDLE hShm; /* File-handle on *-shm file. For locking. */ + int bReadonly; /* True if hShm is opened read-only */ #if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) u8 id; /* Id of this connection with its winShmNode */ #endif @@ -3789,50 +3957,6 @@ struct winShm { #define WIN_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */ #define WIN_SHM_DMS (WIN_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */ -/* -** Apply advisory locks for all n bytes beginning at ofst. -*/ -#define WINSHM_UNLCK 1 -#define WINSHM_RDLCK 2 -#define WINSHM_WRLCK 3 -static int winShmSystemLock( - winShmNode *pFile, /* Apply locks to this open shared-memory segment */ - int lockType, /* WINSHM_UNLCK, WINSHM_RDLCK, or WINSHM_WRLCK */ - int ofst, /* Offset to first byte to be locked/unlocked */ - int nByte /* Number of bytes to lock or unlock */ -){ - int rc = 0; /* Result code form Lock/UnlockFileEx() */ - - /* Access to the winShmNode object is serialized by the caller */ - assert( pFile->nRef==0 || sqlite3_mutex_held(pFile->mutex) ); - - OSTRACE(("SHM-LOCK file=%p, lock=%d, offset=%d, size=%d\n", - pFile->hFile.h, lockType, ofst, nByte)); - - /* Release/Acquire the system-level lock */ - if( lockType==WINSHM_UNLCK ){ - rc = winUnlockFile(&pFile->hFile.h, ofst, 0, nByte, 0); - }else{ - /* Initialize the locking parameters */ - DWORD dwFlags = LOCKFILE_FAIL_IMMEDIATELY; - if( lockType == WINSHM_WRLCK ) dwFlags |= LOCKFILE_EXCLUSIVE_LOCK; - rc = winLockFile(&pFile->hFile.h, dwFlags, ofst, 0, nByte, 0); - } - - if( rc!= 0 ){ - rc = SQLITE_OK; - }else{ - pFile->lastErrno = osGetLastError(); - rc = SQLITE_BUSY; - } - - OSTRACE(("SHM-LOCK file=%p, func=%s, errno=%lu, rc=%s\n", - pFile->hFile.h, (lockType == WINSHM_UNLCK) ? "winUnlockFile" : - "winLockFile", pFile->lastErrno, sqlite3ErrName(rc))); - - return rc; -} - /* Forward references to VFS methods */ static int winOpen(sqlite3_vfs*,const char*,sqlite3_file*,int,int*); static int winDelete(sqlite3_vfs *,const char*,int); @@ -3864,10 +3988,8 @@ static void winShmPurge(sqlite3_vfs *pVfs, int deleteFlag){ osGetCurrentProcessId(), i, bRc ? "ok" : "failed")); UNUSED_VARIABLE_VALUE(bRc); } - if( p->hFile.h!=NULL && p->hFile.h!=INVALID_HANDLE_VALUE ){ - SimulateIOErrorBenign(1); - winClose((sqlite3_file *)&p->hFile); - SimulateIOErrorBenign(0); + if( p->hSharedShm!=NULL && p->hSharedShm!=INVALID_HANDLE_VALUE ){ + osCloseHandle(p->hSharedShm); } if( deleteFlag ){ SimulateIOErrorBenign(1); @@ -3886,42 +4008,135 @@ static void winShmPurge(sqlite3_vfs *pVfs, int deleteFlag){ } /* -** The DMS lock has not yet been taken on shm file pShmNode. Attempt to -** take it now. Return SQLITE_OK if successful, or an SQLite error -** code otherwise. -** -** If the DMS cannot be locked because this is a readonly_shm=1 -** connection and no other process already holds a lock, return -** SQLITE_READONLY_CANTINIT and set pShmNode->isUnlocked=1. +** The DMS lock has not yet been taken on the shm file associated with +** pShmNode. Take the lock. Truncate the *-shm file if required. +** Return SQLITE_OK if successful, or an SQLite error code otherwise. */ static int winLockSharedMemory(winShmNode *pShmNode){ - int rc = winShmSystemLock(pShmNode, WINSHM_WRLCK, WIN_SHM_DMS, 1); + HANDLE h = pShmNode->hSharedShm; + int rc = SQLITE_OK; + rc = winLockFileTimeout(h, WIN_SHM_DMS, 1, 1, 0); if( rc==SQLITE_OK ){ + /* We have an EXCLUSIVE lock on the DMS byte. This means that this + ** is the first process to open the file. Truncate it to zero bytes + ** in this case. */ if( pShmNode->isReadonly ){ - pShmNode->isUnlocked = 1; - winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1); - return SQLITE_READONLY_CANTINIT; - }else if( winTruncate((sqlite3_file*)&pShmNode->hFile, 0) ){ - winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1); - return winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(), - "winLockSharedMemory", pShmNode->zFilename); + rc = SQLITE_READONLY_CANTINIT; + }else{ + rc = winHandleTruncate(h, 0); } + + /* Release the EXCLUSIVE lock acquired above. */ + winUnlockFile(&h, WIN_SHM_DMS, 0, 1, 0); + }else if( (rc & 0xFF)==SQLITE_BUSY ){ + rc = SQLITE_OK; } if( rc==SQLITE_OK ){ - winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1); + /* Take a SHARED lock on the DMS byte. */ + rc = winLockFileTimeout(h, WIN_SHM_DMS, 1, 0, 0); + if( rc==SQLITE_OK ){ + pShmNode->isUnlocked = 0; + } } - return winShmSystemLock(pShmNode, WINSHM_RDLCK, WIN_SHM_DMS, 1); + return rc; } + +/* +** Convert a UTF-8 filename into whatever form the underlying +** operating system wants filenames in. Space to hold the result +** is obtained from malloc and must be freed by the calling +** function. +*/ +static void *winConvertFromUtf8Filename(const char *zFilename){ + void *zConverted = 0; + if( osIsNT() ){ + zConverted = winUtf8ToUnicode(zFilename); + } +#ifdef SQLITE_WIN32_HAS_ANSI + else{ + zConverted = winUtf8ToMbcs(zFilename, osAreFileApisANSI()); + } +#endif + /* caller will handle out of memory */ + return zConverted; +} + +static int winOpenFile( + const char *zUtf8, + int *pbReadonly, + HANDLE *ph +){ + int rc = SQLITE_OK; + void *zConverted = 0; + int bReadonly = *pbReadonly; + HANDLE h = INVALID_HANDLE_VALUE; + + /* Convert the filename to the system encoding. */ + zConverted = winConvertFromUtf8Filename(zUtf8); + if( zConverted==0 ){ + OSTRACE(("OPEN name=%s, rc=SQLITE_IOERR_NOMEM", zUtf8)); + rc = SQLITE_IOERR_NOMEM_BKPT; + goto winopenfile_out; + } + + /* Ensure the file we are trying to open is not actually a directory. */ + if( winIsDir(zConverted) ){ + OSTRACE(("OPEN name=%s, rc=SQLITE_CANTOPEN_ISDIR", zUtf8)); + rc = SQLITE_CANTOPEN_ISDIR; + goto winopenfile_out; + } + + /* TODO: platforms. + ** TODO: retry-on-ioerr. + */ +#if SQLITE_OS_WINRT + { + CREATEFILE2_EXTENDED_PARAMETERS extendedParameters; + memset(&extendedParameters, 0, sizeof(extendedParameters)); + extendedParameters.dwSize = sizeof(extendedParameters); + extendedParameters.dwFileAttributes = FILE_ATTRIBUTE_NORMAL; + extendedParameters.dwFileFlags = FILE_FLAG_OVERLAPPED; + extendedParameters.dwSecurityQosFlags = SECURITY_ANONYMOUS; + h = osCreateFile2((LPCWSTR)zConverted, + (GENERIC_READ | (bReadonly ? 0 : GENERIC_WRITE)),/* dwDesiredAccess */ + FILE_SHARE_READ | FILE_SHARE_WRITE, /* dwShareMode */ + OPEN_ALWAYS, /* dwCreationDisposition */ + &extendedParameters + ); + } +#else + h = osCreateFileW((LPCWSTR)zConverted, /* lpFileName */ + (GENERIC_READ | (bReadonly ? 0 : GENERIC_WRITE)), /* dwDesiredAccess */ + FILE_SHARE_READ | FILE_SHARE_WRITE, /* dwShareMode */ + NULL, /* lpSecurityAttributes */ + OPEN_ALWAYS, /* dwCreationDisposition */ + FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED, + NULL + ); +#endif + if( h==INVALID_HANDLE_VALUE ){ + if( bReadonly==0 ){ + bReadonly = 1; + rc = winOpenFile(zUtf8, &bReadonly, &h); + }else{ + rc = SQLITE_CANTOPEN_BKPT; + } + } + + winopenfile_out: + sqlite3_free(zConverted); + *pbReadonly = bReadonly; + *ph = h; + return rc; +} + + /* ** Open the shared-memory area associated with database file pDbFd. -** -** When opening a new shared-memory file, if no other instances of that -** file are currently open, in this process or in other processes, then -** the file must be truncated to zero length or have its header cleared. */ static int winOpenSharedMemory(winFile *pDbFd){ struct winShm *p; /* The connection to be opened */ @@ -3933,8 +4148,7 @@ static int winOpenSharedMemory(winFile *pDbFd){ assert( pDbFd->pShm==0 ); /* Not previously opened */ /* Allocate space for the new sqlite3_shm object. Also speculatively - ** allocate space for a new winShmNode and filename. - */ + ** allocate space for a new winShmNode and filename. */ p = sqlite3MallocZero( sizeof(*p) ); if( p==0 ) return SQLITE_IOERR_NOMEM_BKPT; nName = sqlite3Strlen30(pDbFd->zPath); @@ -3944,87 +4158,74 @@ static int winOpenSharedMemory(winFile *pDbFd){ return SQLITE_IOERR_NOMEM_BKPT; } pNew->zFilename = (char*)&pNew[1]; + pNew->hSharedShm = INVALID_HANDLE_VALUE; + pNew->isUnlocked = 1; sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath); sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename); + /* Open a file-handle on the *-shm file for this connection. This file-handle + ** is only used for locking. The mapping of the *-shm file is created using the + ** shared file handle in winShmNode.hSharedShm. */ + p->bReadonly = sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0); + rc = winOpenFile(pNew->zFilename, &p->bReadonly, &p->hShm); + /* Look to see if there is an existing winShmNode that can be used. - ** If no matching winShmNode currently exists, create a new one. - */ + ** If no matching winShmNode currently exists, then create a new one. */ winShmEnterMutex(); for(pShmNode = winShmNodeList; pShmNode; pShmNode=pShmNode->pNext){ /* TBD need to come up with better match here. Perhaps - ** use FILE_ID_BOTH_DIR_INFO Structure. - */ + ** use FILE_ID_BOTH_DIR_INFO Structure. */ if( sqlite3StrICmp(pShmNode->zFilename, pNew->zFilename)==0 ) break; } - if( pShmNode ){ - sqlite3_free(pNew); - }else{ - int inFlags = SQLITE_OPEN_WAL; - int outFlags = 0; - + if( pShmNode==0 ){ pShmNode = pNew; - pNew = 0; - ((winFile*)(&pShmNode->hFile))->h = INVALID_HANDLE_VALUE; - pShmNode->pNext = winShmNodeList; - winShmNodeList = pShmNode; + /* Allocate a mutex for this winShmNode object, if one is required. */ if( sqlite3GlobalConfig.bCoreMutex ){ pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( pShmNode->mutex==0 ){ - rc = SQLITE_IOERR_NOMEM_BKPT; - goto shm_open_err; - } + if( pShmNode->mutex==0 ) rc = SQLITE_IOERR_NOMEM_BKPT; } - if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){ - inFlags |= SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE; - }else{ - inFlags |= SQLITE_OPEN_READONLY; - } - rc = winOpen(pDbFd->pVfs, pShmNode->zFilename, - (sqlite3_file*)&pShmNode->hFile, - inFlags, &outFlags); - if( rc!=SQLITE_OK ){ - rc = winLogError(rc, osGetLastError(), "winOpenShm", - pShmNode->zFilename); - goto shm_open_err; + /* Open a file-handle to use for mappings, and for the DMS lock. */ + if( rc==SQLITE_OK ){ + HANDLE h = INVALID_HANDLE_VALUE; + pShmNode->isReadonly = p->bReadonly; + rc = winOpenFile(pNew->zFilename, &pShmNode->isReadonly, &h); + pShmNode->hSharedShm = h; } - if( outFlags==SQLITE_OPEN_READONLY ) pShmNode->isReadonly = 1; - rc = winLockSharedMemory(pShmNode); - if( rc!=SQLITE_OK && rc!=SQLITE_READONLY_CANTINIT ) goto shm_open_err; + /* If successful, link the new winShmNode into the global list. If an + ** error occurred, free the object. */ + if( rc==SQLITE_OK ){ + pShmNode->pNext = winShmNodeList; + winShmNodeList = pShmNode; + pNew = 0; + }else{ + sqlite3_mutex_free(pShmNode->mutex); + if( pShmNode->hSharedShm!=INVALID_HANDLE_VALUE ){ + osCloseHandle(pShmNode->hSharedShm); + } + } } - /* Make the new connection a child of the winShmNode */ - p->pShmNode = pShmNode; + /* If no error has occurred, link the winShm object to the winShmNode and + ** the winShm to pDbFd. */ + if( rc==SQLITE_OK ){ + p->pShmNode = pShmNode; + p->pNext = pShmNode->pFirst; + pShmNode->pFirst = p; + pShmNode->nRef++; #if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) - p->id = pShmNode->nextShmId++; + p->id = pShmNode->nextShmId++; #endif - pShmNode->nRef++; - pDbFd->pShm = p; - winShmLeaveMutex(); - - /* The reference count on pShmNode has already been incremented under - ** the cover of the winShmEnterMutex() mutex and the pointer from the - ** new (struct winShm) object to the pShmNode has been set. All that is - ** left to do is to link the new object into the linked list starting - ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex - ** mutex. - */ - sqlite3_mutex_enter(pShmNode->mutex); - p->pNext = pShmNode->pFirst; - pShmNode->pFirst = p; - sqlite3_mutex_leave(pShmNode->mutex); - return rc; + pDbFd->pShm = p; + }else{ + sqlite3_free(p); + } - /* Jump here on any error */ -shm_open_err: - winShmSystemLock(pShmNode, WINSHM_UNLCK, WIN_SHM_DMS, 1); - winShmPurge(pDbFd->pVfs, 0); /* This call frees pShmNode if required */ - sqlite3_free(p); - sqlite3_free(pNew); + assert( rc!=SQLITE_OK || pShmNode->isUnlocked==0 || pShmNode->nRegion==0 ); winShmLeaveMutex(); + sqlite3_free(pNew); return rc; } @@ -4044,29 +4245,31 @@ static int winShmUnmap( pDbFd = (winFile*)fd; p = pDbFd->pShm; if( p==0 ) return SQLITE_OK; + if( p->hShm!=INVALID_HANDLE_VALUE ){ + osCloseHandle(p->hShm); + } + pShmNode = p->pShmNode; + winShmEnterMutex(); /* Remove connection p from the set of connections associated ** with pShmNode */ - sqlite3_mutex_enter(pShmNode->mutex); for(pp=&pShmNode->pFirst; (*pp)!=p; pp = &(*pp)->pNext){} *pp = p->pNext; - /* Free the connection p */ - sqlite3_free(p); - pDbFd->pShm = 0; - sqlite3_mutex_leave(pShmNode->mutex); - /* If pShmNode->nRef has reached 0, then close the underlying - ** shared-memory file, too */ - winShmEnterMutex(); + ** shared-memory file, too. */ assert( pShmNode->nRef>0 ); pShmNode->nRef--; if( pShmNode->nRef==0 ){ + assert( pShmNode->pFirst==0 ); winShmPurge(pDbFd->pVfs, deleteFlag); } winShmLeaveMutex(); + /* Free the connection p */ + sqlite3_free(p); + pDbFd->pShm = 0; return SQLITE_OK; } @@ -4081,10 +4284,9 @@ static int winShmLock( ){ winFile *pDbFd = (winFile*)fd; /* Connection holding shared memory */ winShm *p = pDbFd->pShm; /* The shared memory being locked */ - winShm *pX; /* For looping over all siblings */ winShmNode *pShmNode; int rc = SQLITE_OK; /* Result code */ - u16 mask; /* Mask of locks to take or release */ + u16 mask = (u16)((1U<<(ofst+n)) - (1U<<ofst)); /* Mask of locks to take/untake */ if( p==0 ) return SQLITE_IOERR_SHMLOCK; pShmNode = p->pShmNode; @@ -4098,85 +4300,82 @@ static int winShmLock( || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); - mask = (u16)((1U<<(ofst+n)) - (1U<<ofst)); - assert( n>1 || mask==(1<<ofst) ); - sqlite3_mutex_enter(pShmNode->mutex); - if( flags & SQLITE_SHM_UNLOCK ){ - u16 allMask = 0; /* Mask of locks held by siblings */ - - /* See if any siblings hold this same lock */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( pX==p ) continue; - assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 ); - allMask |= pX->sharedMask; - } + /* Check that, if this to be a blocking lock, no locks that occur later + ** in the following list than the lock being obtained are already held: + ** + ** 1. Checkpointer lock (ofst==1). + ** 2. Write lock (ofst==0). + ** 3. Read locks (ofst>=3 && ofst<SQLITE_SHM_NLOCK). + ** + ** In other words, if this is a blocking lock, none of the locks that + ** occur later in the above list than the lock being obtained may be + ** held. + ** + ** It is not permitted to block on the RECOVER lock. + */ +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + { + u16 lockMask = (p->exclMask|p->sharedMask); + assert( (flags & SQLITE_SHM_UNLOCK) || pDbFd->iBusyTimeout==0 || ( + (ofst!=2) /* not RECOVER */ + && (ofst!=1 || lockMask==0 || lockMask==2) + && (ofst!=0 || lockMask<3) + && (ofst<3 || lockMask<(1<<ofst)) + )); + } +#endif - /* Unlock the system-level locks */ - if( (mask & allMask)==0 ){ - rc = winShmSystemLock(pShmNode, WINSHM_UNLCK, ofst+WIN_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } + /* Check if there is any work to do. There are three cases: + ** + ** a) An unlock operation where there are locks to unlock, + ** b) An shared lock where the requested lock is not already held + ** c) An exclusive lock where the requested lock is not already held + ** + ** The SQLite core never requests an exclusive lock that it already holds. + ** This is assert()ed immediately below. */ + assert( flags!=(SQLITE_SHM_EXCLUSIVE|SQLITE_SHM_LOCK) + || 0==(p->exclMask & mask) + ); + if( ((flags & SQLITE_SHM_UNLOCK) && ((p->exclMask|p->sharedMask) & mask)) + || (flags==(SQLITE_SHM_SHARED|SQLITE_SHM_LOCK) && 0==(p->sharedMask & mask)) + || (flags==(SQLITE_SHM_EXCLUSIVE|SQLITE_SHM_LOCK)) + ){ - /* Undo the local locks */ - if( rc==SQLITE_OK ){ - p->exclMask &= ~mask; - p->sharedMask &= ~mask; - } - }else if( flags & SQLITE_SHM_SHARED ){ - u16 allShared = 0; /* Union of locks held by connections other than "p" */ + if( flags & SQLITE_SHM_UNLOCK ){ + /* Case (a) - unlock. */ - /* Find out which shared locks are already held by sibling connections. - ** If any sibling already holds an exclusive lock, go ahead and return - ** SQLITE_BUSY. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - allShared |= pX->sharedMask; - } + assert( (p->exclMask & p->sharedMask)==0 ); + assert( !(flags & SQLITE_SHM_EXCLUSIVE) || (p->exclMask & mask)==mask ); + assert( !(flags & SQLITE_SHM_SHARED) || (p->sharedMask & mask)==mask ); - /* Get shared locks at the system level, if necessary */ - if( rc==SQLITE_OK ){ - if( (allShared & mask)==0 ){ - rc = winShmSystemLock(pShmNode, WINSHM_RDLCK, ofst+WIN_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - } + rc = winHandleUnlock(p->hShm, ofst+WIN_SHM_BASE, n); - /* Get the local shared locks */ - if( rc==SQLITE_OK ){ - p->sharedMask |= mask; - } - }else{ - /* Make sure no sibling connections hold locks that will block this - ** lock. If any do, return SQLITE_BUSY right away. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; + /* If successful, also clear the bits in sharedMask/exclMask */ + if( rc==SQLITE_OK ){ + p->exclMask = (p->exclMask & ~mask); + p->sharedMask = (p->sharedMask & ~mask); } - } - - /* Get the exclusive locks at the system level. Then if successful - ** also mark the local connection as being locked. - */ - if( rc==SQLITE_OK ){ - rc = winShmSystemLock(pShmNode, WINSHM_WRLCK, ofst+WIN_SHM_BASE, n); + }else{ + int bExcl = ((flags & SQLITE_SHM_EXCLUSIVE) ? 1 : 0); + int nMs = 0; +#ifdef SQLITE_ENABLE_SETLK_TIMEOUT + nMs = pDbFd->iBusyTimeout +#endif + rc = winLockFileTimeout(p->hShm, ofst+WIN_SHM_BASE, n, bExcl, nMs); if( rc==SQLITE_OK ){ - assert( (p->sharedMask & mask)==0 ); - p->exclMask |= mask; + if( bExcl ){ + p->exclMask = (p->exclMask | mask); + }else{ + p->sharedMask = (p->sharedMask | mask); + } } } } - sqlite3_mutex_leave(pShmNode->mutex); - OSTRACE(("SHM-LOCK pid=%lu, id=%d, sharedMask=%03x, exclMask=%03x, rc=%s\n", - osGetCurrentProcessId(), p->id, p->sharedMask, p->exclMask, - sqlite3ErrName(rc))); + + OSTRACE(( + "SHM-LOCK(%d,%d,%d) pid=%lu, id=%d, sharedMask=%03x, exclMask=%03x, rc=%s\n", + ofst, n, flags, osGetCurrentProcessId(), p->id, p->sharedMask, p->exclMask, + sqlite3ErrName(rc))); return rc; } @@ -4238,13 +4437,15 @@ static int winShmMap( sqlite3_mutex_enter(pShmNode->mutex); if( pShmNode->isUnlocked ){ + /* Take the DMS lock. */ + assert( pShmNode->nRegion==0 ); rc = winLockSharedMemory(pShmNode); if( rc!=SQLITE_OK ) goto shmpage_out; - pShmNode->isUnlocked = 0; } - assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); + assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); if( pShmNode->nRegion<=iRegion ){ + HANDLE hShared = pShmNode->hSharedShm; struct ShmRegion *apNew; /* New aRegion[] array */ int nByte = (iRegion+1)*szRegion; /* Minimum required file size */ sqlite3_int64 sz; /* Current size of wal-index file */ @@ -4255,10 +4456,9 @@ static int winShmMap( ** Check to see if it has been allocated (i.e. if the wal-index file is ** large enough to contain the requested region). */ - rc = winFileSize((sqlite3_file *)&pShmNode->hFile, &sz); + rc = winHandleSize(hShared, &sz); if( rc!=SQLITE_OK ){ - rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(), - "winShmMap1", pDbFd->zPath); + rc = winLogError(rc, osGetLastError(), "winShmMap1", pDbFd->zPath); goto shmpage_out; } @@ -4267,19 +4467,17 @@ static int winShmMap( ** zero, exit early. *pp will be set to NULL and SQLITE_OK returned. ** ** Alternatively, if isWrite is non-zero, use ftruncate() to allocate - ** the requested memory region. - */ + ** the requested memory region. */ if( !isWrite ) goto shmpage_out; - rc = winTruncate((sqlite3_file *)&pShmNode->hFile, nByte); + rc = winHandleTruncate(hShared, nByte); if( rc!=SQLITE_OK ){ - rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(), - "winShmMap2", pDbFd->zPath); + rc = winLogError(rc, osGetLastError(), "winShmMap2", pDbFd->zPath); goto shmpage_out; } } /* Map the requested memory region into this processes address space. */ - apNew = (struct ShmRegion *)sqlite3_realloc64( + apNew = (struct ShmRegion*)sqlite3_realloc64( pShmNode->aRegion, (iRegion+1)*sizeof(apNew[0]) ); if( !apNew ){ @@ -4298,18 +4496,13 @@ static int winShmMap( void *pMap = 0; /* Mapped memory region */ #if SQLITE_OS_WINRT - hMap = osCreateFileMappingFromApp(pShmNode->hFile.h, - NULL, protect, nByte, NULL - ); + hMap = osCreateFileMappingFromApp(hShared, NULL, protect, nByte, NULL); #elif defined(SQLITE_WIN32_HAS_WIDE) - hMap = osCreateFileMappingW(pShmNode->hFile.h, - NULL, protect, 0, nByte, NULL - ); + hMap = osCreateFileMappingW(hShared, NULL, protect, 0, nByte, NULL); #elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA - hMap = osCreateFileMappingA(pShmNode->hFile.h, - NULL, protect, 0, nByte, NULL - ); + hMap = osCreateFileMappingA(hShared, NULL, protect, 0, nByte, NULL); #endif + OSTRACE(("SHM-MAP-CREATE pid=%lu, region=%d, size=%d, rc=%s\n", osGetCurrentProcessId(), pShmNode->nRegion, nByte, hMap ? "ok" : "failed")); @@ -4352,7 +4545,9 @@ shmpage_out: }else{ *pp = 0; } - if( pShmNode->isReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY; + if( pShmNode->isReadonly && rc==SQLITE_OK ){ + rc = SQLITE_READONLY; + } sqlite3_mutex_leave(pShmNode->mutex); return rc; } @@ -4694,26 +4889,6 @@ static char *winConvertToUtf8Filename(const void *zFilename){ #endif /* -** Convert a UTF-8 filename into whatever form the underlying -** operating system wants filenames in. Space to hold the result -** is obtained from malloc and must be freed by the calling -** function. -*/ -static void *winConvertFromUtf8Filename(const char *zFilename){ - void *zConverted = 0; - if( osIsNT() ){ - zConverted = winUtf8ToUnicode(zFilename); - } -#ifdef SQLITE_WIN32_HAS_ANSI - else{ - zConverted = winUtf8ToMbcs(zFilename, osAreFileApisANSI()); - } -#endif - /* caller will handle out of memory */ - return zConverted; -} - -/* ** This function returns non-zero if the specified UTF-8 string buffer ** ends with a directory separator character or one was successfully ** added to it. diff --git a/src/test1.c b/src/test1.c index cf5d484e9..57836abe1 100644 --- a/src/test1.c +++ b/src/test1.c @@ -7928,7 +7928,7 @@ static int SQLITE_TCLAPI test_getrusage( */ struct win32FileLocker { char *evName; /* Name of event to signal thread startup */ - HANDLE h; /* Handle of the file to be locked */ + sqlite3_file *pFd; /* Handle of the file to be locked */ int delay1; /* Delay before locking */ int delay2; /* Delay before unlocking */ int ok; /* Finished ok */ @@ -7944,6 +7944,8 @@ struct win32FileLocker { */ static void SQLITE_CDECL win32_file_locker(void *pAppData){ struct win32FileLocker *p = (struct win32FileLocker*)pAppData; + sqlite3_file *pFd = p->pFd; + HANDLE h = INVALID_HANDLE_VALUE; if( p->evName ){ HANDLE ev = OpenEvent(EVENT_MODIFY_STATE, FALSE, p->evName); if ( ev ){ @@ -7952,15 +7954,17 @@ static void SQLITE_CDECL win32_file_locker(void *pAppData){ } } if( p->delay1 ) Sleep(p->delay1); - if( LockFile(p->h, 0, 0, 100000000, 0) ){ + pFd->pMethods->xFileControl(pFd, SQLITE_FCNTL_WIN32_GET_HANDLE, (void*)&h); + if( LockFile(h, 0, 0, 100000000, 0) ){ Sleep(p->delay2); - UnlockFile(p->h, 0, 0, 100000000, 0); + UnlockFile(h, 0, 0, 100000000, 0); p->ok = 1; }else{ p->err = 1; } - CloseHandle(p->h); - p->h = 0; + pFd->pMethods->xClose(pFd); + sqlite3_free(pFd); + p->pFd = 0; p->delay1 = 0; p->delay2 = 0; } @@ -7985,32 +7989,40 @@ static int SQLITE_TCLAPI win32_file_lock( int retry = 0; HANDLE ev; DWORD wResult; + sqlite3_vfs *pVfs = 0; + int flags = SQLITE_OPEN_MAIN_DB | SQLITE_OPEN_READWRITE; if( objc!=4 && objc!=1 ){ Tcl_WrongNumArgs(interp, 1, objv, "FILENAME DELAY1 DELAY2"); return TCL_ERROR; } if( objc==1 ){ + HANDLE h = INVALID_HANDLE_VALUE; + if( x.pFd ){ + x.pFd->pMethods->xFileControl( + x.pFd, SQLITE_FCNTL_WIN32_GET_HANDLE, (void*)&h + ); + } sqlite3_snprintf(sizeof(zBuf), zBuf, "%d %d %d %d %d", - x.ok, x.err, x.delay1, x.delay2, x.h); + x.ok, x.err, x.delay1, x.delay2, h); Tcl_AppendResult(interp, zBuf, (char*)0); return TCL_OK; } - while( x.h && retry<30 ){ + while( x.pFd && retry<30 ){ retry++; Sleep(100); } - if( x.h ){ + if( x.pFd ){ Tcl_AppendResult(interp, "busy", (char*)0); return TCL_ERROR; } if( Tcl_GetIntFromObj(interp, objv[2], &x.delay1) ) return TCL_ERROR; if( Tcl_GetIntFromObj(interp, objv[3], &x.delay2) ) return TCL_ERROR; zFilename = Tcl_GetString(objv[1]); - x.h = CreateFile(zFilename, GENERIC_READ|GENERIC_WRITE, - FILE_SHARE_READ|FILE_SHARE_WRITE, 0, OPEN_ALWAYS, - FILE_ATTRIBUTE_NORMAL, 0); - if( !x.h ){ + + pVfs = sqlite3_vfs_find(0); + x.pFd = (sqlite3_file*)sqlite3_malloc(pVfs->szOsFile); + if( pVfs->xOpen(pVfs, zFilename, x.pFd, flags, &flags)!=SQLITE_OK ){ Tcl_AppendResult(interp, "cannot open file: ", zFilename, (char*)0); return TCL_ERROR; } diff --git a/src/test_config.c b/src/test_config.c index c8ce2ab88..20d0faa50 100644 --- a/src/test_config.c +++ b/src/test_config.c @@ -88,6 +88,12 @@ static void set_options(Tcl_Interp *interp){ Tcl_SetVar2(interp, "sqlite_options", "win32malloc", "0", TCL_GLOBAL_ONLY); #endif +#ifdef SQLITE_OS_WINRT + Tcl_SetVar2(interp, "sqlite_options", "winrt", "1", TCL_GLOBAL_ONLY); +#else + Tcl_SetVar2(interp, "sqlite_options", "winrt", "0", TCL_GLOBAL_ONLY); +#endif + #ifdef SQLITE_DEBUG Tcl_SetVar2(interp, "sqlite_options", "debug", "1", TCL_GLOBAL_ONLY); #else diff --git a/src/test_quota.c b/src/test_quota.c index 1bfc5ce11..62d808a22 100644 --- a/src/test_quota.c +++ b/src/test_quota.c @@ -389,7 +389,11 @@ static char *quota_utf8_to_mbcs(const char *zUtf8){ zTmpWide = (LPWSTR)sqlite3_malloc( (nWide+1)*sizeof(zTmpWide[0]) ); if( zTmpWide==0 ) return 0; MultiByteToWideChar(CP_UTF8, 0, zUtf8, -1, zTmpWide, nWide); +#ifdef SQLITE_OS_WINRT + codepage = CP_ACP; +#else codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP; +#endif nMbcs = WideCharToMultiByte(codepage, 0, zTmpWide, nWide, 0, 0, 0, 0); zMbcs = nMbcs ? (char*)sqlite3_malloc( nMbcs+1 ) : 0; if( zMbcs ){ |