diff options
Diffstat (limited to 'Lib/bsddb/__init__.py')
| -rw-r--r-- | Lib/bsddb/__init__.py | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/Lib/bsddb/__init__.py b/Lib/bsddb/__init__.py index d3ee773cec..c004c08a87 100644 --- a/Lib/bsddb/__init__.py +++ b/Lib/bsddb/__init__.py @@ -287,10 +287,9 @@ def hashopen(file, flag='c', mode=0666, pgsize=None, ffactor=None, nelem=None, cachesize=None, lorder=None, hflags=0): flags = _checkflag(flag, file) - e = _openDBEnv() + e = _openDBEnv(cachesize) d = db.DB(e) d.set_flags(hflags) - if cachesize is not None: d.set_cachesize(0, cachesize) if pgsize is not None: d.set_pagesize(pgsize) if lorder is not None: d.set_lorder(lorder) if ffactor is not None: d.set_h_ffactor(ffactor) @@ -305,9 +304,8 @@ def btopen(file, flag='c', mode=0666, pgsize=None, lorder=None): flags = _checkflag(flag, file) - e = _openDBEnv() + e = _openDBEnv(cachesize) d = db.DB(e) - if cachesize is not None: d.set_cachesize(0, cachesize) if pgsize is not None: d.set_pagesize(pgsize) if lorder is not None: d.set_lorder(lorder) d.set_flags(btflags) @@ -324,9 +322,8 @@ def rnopen(file, flag='c', mode=0666, rlen=None, delim=None, source=None, pad=None): flags = _checkflag(flag, file) - e = _openDBEnv() + e = _openDBEnv(cachesize) d = db.DB(e) - if cachesize is not None: d.set_cachesize(0, cachesize) if pgsize is not None: d.set_pagesize(pgsize) if lorder is not None: d.set_lorder(lorder) d.set_flags(rnflags) @@ -339,8 +336,13 @@ def rnopen(file, flag='c', mode=0666, #---------------------------------------------------------------------- -def _openDBEnv(): +def _openDBEnv(cachesize): e = db.DBEnv() + if cachesize is not None: + if cachesize >= 20480: + e.set_cachesize(0, cachesize) + else: + raise error, "cachesize must be >= 20480" e.open('.', db.DB_PRIVATE | db.DB_CREATE | db.DB_THREAD | db.DB_INIT_LOCK | db.DB_INIT_MPOOL) return e @@ -358,7 +360,7 @@ def _checkflag(flag, file): #flags = db.DB_CREATE | db.DB_TRUNCATE # we used db.DB_TRUNCATE flag for this before but BerkeleyDB # 4.2.52 changed to disallowed truncate with txn environments. - if os.path.isfile(file): + if file is not None and os.path.isfile(file): os.unlink(file) else: raise error, "flags should be one of 'r', 'w', 'c' or 'n'" |