3921 static int winOpenSharedMemory(winFile *pDbFd){  argument
3928   assert( pDbFd->pShm==0 );    /* Not previously opened */
3935   nName = sqlite3Strlen30(pDbFd->zPath);
3942   sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath);
3943   sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename);
3975     if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
3980     rc = winOpen(pDbFd->pVfs, pShmNode->zFilename,
4000   pDbFd->pShm = p;
4019   winShmPurge(pDbFd->pVfs, 0);      /* This call frees pShmNode if required */
4034   winFile *pDbFd;       /* Database holding shared-memory */  local
4039   pDbFd = (winFile*)fd;
4040   p = pDbFd->pShm;
4052   pDbFd->pShm = 0;
4061     winShmPurge(pDbFd->pVfs, deleteFlag);
4077   winFile *pDbFd = (winFile*)fd;        /* Connection holding shared memory */  local
4078   winShm *p = pDbFd->pShm;              /* The shared memory being locked */
4219   winFile *pDbFd = (winFile*)fd;  local
4220   winShm *pShm = pDbFd->pShm;
4227     rc = winOpenSharedMemory(pDbFd);
4229     pShm = pDbFd->pShm;
4256                        "winShmMap1", pDbFd->zPath);
4271                          "winShmMap2", pDbFd->zPath);
4330                          "winShmMap3", pDbFd->zPath);