nMmapOut         42301 ext/sqlite3/libsqlite/sqlite3.c   int nMmapOut;               /* Number of mmap pages currently outstanding */
nMmapOut         45553 ext/sqlite3/libsqlite/sqlite3.c   pPager->nMmapOut++;
nMmapOut         45564 ext/sqlite3/libsqlite/sqlite3.c   pPager->nMmapOut--;
nMmapOut         46844 ext/sqlite3/libsqlite/sqlite3.c   if( pPager->nMmapOut==0 && (sqlite3PcacheRefCount(pPager->pPCache)==0) ){