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Overview
| Comment: | More updates to the Win32 interface for lsm1. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
cae647696769c9fcdc3beafdfdf74d83 |
| User & Date: | mistachkin 2017-06-29 16:51:52 |
Context
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2017-06-29
| ||
| 17:27 | Edit comments in sqlite.h.in used for generating documentation, to improve the description of the new sqlite3_prepare_v3() interfaces, and other miscellaneous cleanup. No changes to executable code. check-in: 284707a7 user: drh tags: trunk | |
| 16:51 | More updates to the Win32 interface for lsm1. check-in: cae64769 user: mistachkin tags: trunk | |
| 15:57 | Correct typo in the Win32 interface for lsm1. check-in: 1b4facb1 user: mistachkin tags: trunk | |
Changes
Changes to ext/lsm1/lsm_win32.c.
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struct Win32File {
lsm_env *pEnv; /* The run-time environment */
const char *zName; /* Full path to file */
HANDLE hFile; /* Open file handle */
HANDLE hShmFile; /* File handle for *-shm file */
HANDLE hMap; /* File handle for mapping */
LPVOID pMap; /* Pointer to mapping of file fd */
size_t nMap; /* Size of mapping at pMap in bytes */
int nShm; /* Number of entries in ahShm[]/apShm[] */
LPHANDLE ahShm; /* Array of handles for shared mappings */
LPVOID *apShm; /* Array of 32K shared memory segments */
};
................................................................................
if( pWin32File==0 ){
rc = LSM_NOMEM_BKPT;
}else{
HANDLE hFile;
rc = win32Open(pEnv, zFile, flags, &hFile);
if( rc==LSM_OK ){
pWin32File->pEnv = pEnv;
pWin32File->zName = zFile;
pWin32File->hFile = hFile;
}else{
lsmFree(pEnv, pWin32File);
pWin32File = 0;
}
................................................................................
rc = LSM_IOERR_BKPT;
}
}
if( rc==LSM_OK && !FlushFileBuffers(pWin32File->hFile) ){
rc = LSM_IOERR_BKPT;
}
#else
#endif
return rc;
}
static int lsmWin32OsSectorSize(lsm_file *pFile){
return 512;
................................................................................
if( fileSize.QuadPart<nReq ){
rc = win32Truncate(pWin32File->hShmFile, nReq);
if( rc!=LSM_OK ){
return rc;
}
}
ahNew = (void **)lsmRealloc(pWin32File->pEnv, pWin32File->ahShm,
sizeof(LPHANDLE) * nNew);
if( !ahNew ) return LSM_NOMEM_BKPT;
apNew = (void **)lsmRealloc(pWin32File->pEnv, pWin32File->apShm,
sizeof(LPVOID) * nNew);
if( !apNew ){
lsmFree(pWin32File->pEnv, ahNew);
return LSM_NOMEM_BKPT;
}
for(i=pWin32File->nShm; i<nNew; i++){
ahNew[i] = NULL;
apNew[i] = NULL;
................................................................................
(DWORD)sz, NULL);
if( hMap==NULL ){
return LSM_IOERR_BKPT;
}
pWin32File->ahShm[iChunk] = hMap;
}
if( pWin32File->apShm[iChunk]==NULL ){
LPVOID pMap;
pMap = MapViewOfFile(pWin32File->ahShm[iChunk],
FILE_MAP_WRITE | FILE_MAP_READ, 0, (DWORD)(iChunk*sz),
(SIZE_T)sz);
if( pMap==NULL ){
return LSM_IOERR_BKPT;
}
pWin32File->apShm[iChunk] = pMap;
}
*ppShm = pWin32File->apShm[iChunk];
return LSM_OK;
................................................................................
}
if( pWin32File->ahShm[i]!=NULL ){
CloseHandle(pWin32File->ahShm[i]);
pWin32File->ahShm[i] = NULL;
}
}
CloseHandle(pWin32File->hShmFile);
pWin32File->hShmFile = 0;
if( bDelete ){
char *zShm = win32ShmFile(pWin32File);
if( zShm ){ win32Delete(pWin32File->pEnv, zShm); }
lsmFree(pWin32File->pEnv, zShm);
}
}
return LSM_OK;
|
> > > > | | | | > > | < > | |
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struct Win32File {
lsm_env *pEnv; /* The run-time environment */
const char *zName; /* Full path to file */
HANDLE hFile; /* Open file handle */
HANDLE hShmFile; /* File handle for *-shm file */
SYSTEM_INFO sysInfo; /* Operating system information */
HANDLE hMap; /* File handle for mapping */
LPVOID pMap; /* Pointer to mapping of file fd */
size_t nMap; /* Size of mapping at pMap in bytes */
int nShm; /* Number of entries in ahShm[]/apShm[] */
LPHANDLE ahShm; /* Array of handles for shared mappings */
LPVOID *apShm; /* Array of 32K shared memory segments */
};
................................................................................
if( pWin32File==0 ){
rc = LSM_NOMEM_BKPT;
}else{
HANDLE hFile;
rc = win32Open(pEnv, zFile, flags, &hFile);
if( rc==LSM_OK ){
memset(&pWin32File->sysInfo, 0, sizeof(SYSTEM_INFO));
GetSystemInfo(&pWin32File->sysInfo);
pWin32File->pEnv = pEnv;
pWin32File->zName = zFile;
pWin32File->hFile = hFile;
}else{
lsmFree(pEnv, pWin32File);
pWin32File = 0;
}
................................................................................
rc = LSM_IOERR_BKPT;
}
}
if( rc==LSM_OK && !FlushFileBuffers(pWin32File->hFile) ){
rc = LSM_IOERR_BKPT;
}
#else
unused_parameter(pFile);
#endif
return rc;
}
static int lsmWin32OsSectorSize(lsm_file *pFile){
return 512;
................................................................................
if( fileSize.QuadPart<nReq ){
rc = win32Truncate(pWin32File->hShmFile, nReq);
if( rc!=LSM_OK ){
return rc;
}
}
ahNew = (LPHANDLE)lsmRealloc(pWin32File->pEnv, pWin32File->ahShm,
sizeof(LPHANDLE) * nNew);
if( !ahNew ) return LSM_NOMEM_BKPT;
apNew = (LPVOID *)lsmRealloc(pWin32File->pEnv, pWin32File->apShm,
sizeof(LPVOID) * nNew);
if( !apNew ){
lsmFree(pWin32File->pEnv, ahNew);
return LSM_NOMEM_BKPT;
}
for(i=pWin32File->nShm; i<nNew; i++){
ahNew[i] = NULL;
apNew[i] = NULL;
................................................................................
(DWORD)sz, NULL);
if( hMap==NULL ){
return LSM_IOERR_BKPT;
}
pWin32File->ahShm[iChunk] = hMap;
}
if( pWin32File->apShm[iChunk]==NULL ){
int iOffset = iChunk * sz;
int iOffsetShift = iOffset % pWin32File->sysInfo.dwAllocationGranularity;
LPVOID pMap;
pMap = MapViewOfFile(pWin32File->ahShm[iChunk],
FILE_MAP_WRITE | FILE_MAP_READ, 0,
iOffset - iOffsetShift, sz + iOffsetShift);
if( pMap==NULL ){
return LSM_IOERR_BKPT;
}
pWin32File->apShm[iChunk] = pMap;
}
*ppShm = pWin32File->apShm[iChunk];
return LSM_OK;
................................................................................
}
if( pWin32File->ahShm[i]!=NULL ){
CloseHandle(pWin32File->ahShm[i]);
pWin32File->ahShm[i] = NULL;
}
}
CloseHandle(pWin32File->hShmFile);
pWin32File->hShmFile = NULL;
if( bDelete ){
char *zShm = win32ShmFile(pWin32File);
if( zShm ){ win32Delete(pWin32File->pEnv, zShm); }
lsmFree(pWin32File->pEnv, zShm);
}
}
return LSM_OK;
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