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Commit 226ee421 authored by Toby Dickenson's avatar Toby Dickenson
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merged toby-stiff-cache-branch and toby-unicode-branch

parent 87c6d4a6
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Showing with 2669 additions and 1429 deletions
src/BTrees/BTreeTemplate.c
View file @ 226ee421
......@@ -12,7 +12,7 @@
****************************************************************************/
#define BTREETEMPLATE_C "$Id: BTreeTemplate.c,v 1.25 2002/03/08 18:33:01 jeremy Exp $\n"
#define BTREETEMPLATE_C "$Id: BTreeTemplate.c,v 1.26 2002/03/27 10:14:01 htrd Exp $\n"
/*
** _BTree_get
......@@ -540,7 +540,7 @@ _BTree_clear(BTree *self)
if (self->firstbucket)
{
ASSERT(self->firstbucket->ob_refcnt > 1,
ASSERT(self->firstbucket->ob_refcnt > 0,
"Invalid firstbucket pointer", -1);
Py_DECREF(self->firstbucket);
self->firstbucket=NULL;
......@@ -573,7 +573,7 @@ BTree__p_deactivate(BTree *self, PyObject *args)
if (self->state==cPersistent_UPTODATE_STATE && self->jar)
{
if (_BTree_clear(self) < 0) return NULL;
self->state=cPersistent_GHOST_STATE;
PER_GHOSTIFY(self);
}
Py_INCREF(Py_None);
......
src/BTrees/BucketTemplate.c
View file @ 226ee421
......@@ -12,7 +12,7 @@
****************************************************************************/
#define BUCKETTEMPLATE_C "$Id: BucketTemplate.c,v 1.28 2002/03/08 18:33:01 jeremy Exp $\n"
#define BUCKETTEMPLATE_C "$Id: BucketTemplate.c,v 1.29 2002/03/27 10:14:01 htrd Exp $\n"
/*
** _bucket_get
......@@ -809,7 +809,7 @@ bucket__p_deactivate(Bucket *self, PyObject *args)
if (self->state==cPersistent_UPTODATE_STATE && self->jar)
{
if (_bucket_clear(self) < 0) return NULL;
self->state=cPersistent_GHOST_STATE;
PER_GHOSTIFY(self);
}
Py_INCREF(Py_None);
......
src/Persistence/cPersistence.c
View file @ 226ee421
......@@ -14,11 +14,21 @@
static char cPersistence_doc_string[] =
"Defines Persistent mixin class for persistent objects.\n"
"\n"
"$Id: cPersistence.c,v 1.50 2002/03/08 18:36:13 jeremy Exp $\n";
"$Id: cPersistence.c,v 1.51 2002/03/27 10:14:04 htrd Exp $\n";
#include <string.h>
#include "cPersistence.h"
/* the layout of this struct is the same as the start of ccobject in cPickleCache.c */
struct ccobject_head_struct {
PyObject_HEAD
CPersistentRing ring_home;
int non_ghost_count;
};
#define HOME(O) ((!((O)->cache))?(NULL): (&(((struct ccobject_head_struct *)((O)->cache))->ring_home)) )
#define NON_GHOST_COUNT(O) ((!((O)->cache))?(NULL): (&(((struct ccobject_head_struct *)((O)->cache))->non_ghost_count)) )
#define ASSIGN(V,E) {PyObject *__e; __e=(E); Py_XDECREF(V); (V)=__e;}
#define UNLESS(E) if(!(E))
#define UNLESS_ASSIGN(V,E) ASSIGN(V,E) UNLESS(V)
......@@ -112,21 +122,82 @@ if(self->state < 0 && self->jar) \
{ \
PyObject *r; \
\
int *count = NON_GHOST_COUNT(self); \
if(count) \
{ \
(*count)++; \
self->ring.next = HOME(self); \
self->ring.prev = HOME(self)->prev; \
HOME(self)->prev->next = &self->ring; \
HOME(self)->prev = &self->ring; \
Py_INCREF(self); \
} \
self->state=cPersistent_CHANGED_STATE; \
UNLESS(r=callmethod1(self->jar,py_setstate,(PyObject*)self)) \
{ \
self->state=cPersistent_GHOST_STATE; \
ghostify(self); \
return ER; \
} \
self->state=cPersistent_UPTODATE_STATE; \
Py_DECREF(r); \
}
#define KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self) \
if(HOME(self) && self->state>=0) { \
self->ring.prev->next = self->ring.next; \
self->ring.next->prev = self->ring.prev; \
self->ring.next = HOME(self); \
self->ring.prev = HOME(self)->prev; \
HOME(self)->prev->next = &self->ring; \
HOME(self)->prev = &self->ring; }
/****************************************************************************/
staticforward PyExtensionClass Pertype;
static void
accessed(cPersistentObject *self)
{
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
}
static void
ghostify(cPersistentObject *self)
{
int *count;
count = NON_GHOST_COUNT(self);
if(count && (self->state>=0))
{
(*count)--;
self->ring.next->prev = self->ring.prev;
self->ring.prev->next = self->ring.next;
self->ring.prev = NULL;
self->ring.next = NULL;
self->state = cPersistent_GHOST_STATE;
Py_DECREF(self);
}
else
{
self->state = cPersistent_GHOST_STATE;
}
}
static void
deallocated(cPersistentObject *self)
{
if(self->state>=0) ghostify(self);
if(self->cache)
{
PyObject *v=PyObject_CallMethod(self->cache,"_oid_unreferenced","O",self->oid);
if(!v) PyErr_Clear(); /* and explode later */
Py_XDECREF(v);
}
Py_XDECREF(self->jar);
Py_XDECREF(self->oid);
}
static int
changed(cPersistentObject *self)
{
......@@ -185,7 +256,7 @@ Per___changed__(cPersistentObject *self, PyObject *args)
static PyObject *
Per__p_deactivate(cPersistentObject *self, PyObject *args)
{
PyObject *dict;
PyObject *dict,*dict2=NULL;
#ifdef DEBUG_LOG
if (idebug_log < 0) call_debug("reinit",self);
......@@ -197,11 +268,20 @@ Per__p_deactivate(cPersistentObject *self, PyObject *args)
if (self->state==cPersistent_UPTODATE_STATE && self->jar &&
HasInstDict(self) && (dict=INSTANCE_DICT(self)))
{
dict2 = PyDict_Copy(dict);
PyDict_Clear(dict);
/* Note that we need to set to ghost state unless we are
called directly. Methods that override this need to
do the same! */
self->state=cPersistent_GHOST_STATE;
ghostify(self);
}
/* need to delay releasing the last reference on instance attributes
until after we have finished accounting for losing our state */
if(dict2)
{
PyDict_Clear(dict2);
Py_DECREF(dict2);
}
Py_INCREF(Py_None);
......@@ -333,8 +413,8 @@ Per_dealloc(cPersistentObject *self)
#ifdef DEBUG_LOG
if(idebug_log < 0) call_debug("del",self);
#endif
Py_XDECREF(self->jar);
Py_XDECREF(self->oid);
deallocated(self);
Py_XDECREF(self->cache);
Py_DECREF(self->ob_type);
PyObject_DEL(self);
}
......@@ -387,7 +467,7 @@ Per_getattr(cPersistentObject *self, PyObject *oname, char *name,
{
UPDATE_STATE_IF_NECESSARY(self, NULL);
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
if (self->serial[7]=='\0' && self->serial[6]=='\0' &&
self->serial[5]=='\0' && self->serial[4]=='\0' &&
......@@ -419,7 +499,7 @@ Per_getattr(cPersistentObject *self, PyObject *oname, char *name,
{
UPDATE_STATE_IF_NECESSARY(self, NULL);
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
}
return getattrf((PyObject *)self, oname);
......@@ -466,6 +546,21 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
{
if(name[3]=='o' && name[4]=='i' && name[5]=='d' && ! name[6])
{
if(HOME(self))
{
int result;
if(!v)
{
PyErr_SetString(PyExc_ValueError,"can not delete the oid of a cached object");
return -1;
}
if(PyObject_Cmp(self->oid,v,&result)<0) return -1;
if(result)
{
PyErr_SetString(PyExc_ValueError,"can not change the oid of a cached object");
return -1;
}
}
Py_XINCREF(v);
ASSIGN(self->oid, v);
return 0;
......@@ -509,7 +604,6 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
v=PyObject_GetAttr(OBJECT(self), py__p_deactivate);
if (v) { ASSIGN(v, PyObject_CallObject(v, NULL)); }
if (v) { Py_DECREF(v); }
self->state=cPersistent_GHOST_STATE;
return 0;
}
if (PyObject_IsTrue(v)) return changed(self);
......@@ -521,8 +615,7 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
{
UPDATE_STATE_IF_NECESSARY(self, -1);
/* Record access times */
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
if((! (*name=='_' && name[1]=='v' && name[2]=='_'))
&& (self->state != cPersistent_CHANGED_STATE && self->jar)
......@@ -680,9 +773,11 @@ truecPersistenceCAPI = {
(getattrofunc)Per_getattro, /*tp_getattr with object key*/
(setattrofunc)Per_setattro, /*tp_setattr with object key*/
changed,
accessed,
ghostify,
deallocated,
(intfunctionwithpythonarg)Per_setstate,
(pergetattr)Per_getattr,
(persetattr)_setattro,
};
void
......
src/Persistence/cPersistence.h
View file @ 226ee421
......@@ -18,12 +18,21 @@
#include "ExtensionClass.h"
#include <time.h>
#define cPersistent_HEAD PyObject_HEAD PyObject *jar, *oid; char serial[8]; unsigned short atime; signed char state; unsigned char reserved;
#define cPersistent_HEAD PyObject_HEAD PyObject *jar, *oid, *cache; CPersistentRing ring; char serial[8]; signed char state; unsigned char reserved[3];
#define cPersistent_GHOST_STATE -1
#define cPersistent_UPTODATE_STATE 0
#define cPersistent_CHANGED_STATE 1
#define cPersistent_STICKY_STATE 2
struct ccobject_head_struct;
typedef struct CPersistentRing_struct
{
struct CPersistentRing_struct *prev;
struct CPersistentRing_struct *next;
} CPersistentRing;
typedef struct {
cPersistent_HEAD
} cPersistentObject;
......@@ -36,6 +45,9 @@ typedef struct {
getattrofunc getattro;
setattrofunc setattro;
int (*changed)(cPersistentObject*);
void (*accessed)(cPersistentObject*);
void (*ghostify)(cPersistentObject*);
void (*deallocated)(cPersistentObject*);
int (*setstate)(PyObject*);
pergetattr pergetattro;
persetattr persetattro;
......@@ -59,11 +71,13 @@ static cPersistenceCAPIstruct *cPersistenceCAPI;
#define PER_CHANGED(O) (cPersistenceCAPI->changed((cPersistentObject*)(O)))
#define PER_GHOSTIFY(O) (cPersistenceCAPI->ghostify((cPersistentObject*)(O)))
#define PER_ALLOW_DEACTIVATION(O) ((O)->state==cPersistent_STICKY_STATE && ((O)->state=cPersistent_UPTODATE_STATE))
#define PER_PREVENT_DEACTIVATION(O) ((O)->state==cPersistent_UPTODATE_STATE && ((O)->state=cPersistent_STICKY_STATE))
#define PER_DEL(O) Py_XDECREF((O)->jar); Py_XDECREF((O)->oid);
#define PER_DEL(O) (cPersistenceCAPI->deallocated((cPersistentObject*)(O)))
#define PER_USE(O) \
(((O)->state != cPersistent_GHOST_STATE \
......@@ -71,7 +85,7 @@ static cPersistenceCAPIstruct *cPersistenceCAPI;
? (((O)->state==cPersistent_UPTODATE_STATE) \
? ((O)->state=cPersistent_STICKY_STATE) : 1) : 0)
#define PER_ACCESSED(O) ((O)->atime=((long)(time(NULL)/3))%65536)
#define PER_ACCESSED(O) (cPersistenceCAPI->accessed((cPersistentObject*)(O)))
#endif
......
src/Persistence/cPickleCache.c
View file @ 226ee421
This diff is collapsed.
src/ZODB/Connection.py
View file @ 226ee421
......@@ -13,14 +13,14 @@
##############################################################################
"""Database connection support
$Id: Connection.py,v 1.63 2002/02/11 23:40:42 gvanrossum Exp $"""
__version__='$Revision: 1.63 $'[11:-2]
$Id: Connection.py,v 1.64 2002/03/27 10:14:03 htrd Exp $"""
__version__='$Revision: 1.64 $'[11:-2]
from cPickleCache import PickleCache
from cPickleCache import PickleCache, MUCH_RING_CHECKING
from POSException import ConflictError, ReadConflictError
from ExtensionClass import Base
import ExportImport, TmpStore
from zLOG import LOG, ERROR, BLATHER
from zLOG import LOG, ERROR, BLATHER, WARNING
from coptimizations import new_persistent_id
from ConflictResolution import ResolvedSerial
......@@ -32,6 +32,11 @@ from types import StringType, ClassType
global_code_timestamp = 0
if MUCH_RING_CHECKING:
# To get rid of this warning, change the define inside cPickleCache.c and recompile.
LOG('ZODB',WARNING, 'Using cPickleCache with low performance (but extra debugging checks)')
del MUCH_RING_CHECKING
def updateCodeTimestamp():
'''
Called after changes are made to persistence-based classes.
......@@ -65,12 +70,35 @@ class Connection(ExportImport.ExportImport):
"""Create a new Connection"""
self._version=version
self._cache=cache=PickleCache(self, cache_size, cache_deactivate_after)
if version:
# Caches for versions end up empty if the version
# is not used for a while. Non-version caches
# keep their content indefinitely.
self._cache.cache_drain_resistance = 100
self._incrgc=self.cacheGC=cache.incrgc
self._invalidated=d={}
self._invalid=d.has_key
self._committed=[]
self._code_timestamp = global_code_timestamp
def _cache_items(self):
# find all items on the lru list
items = self._cache.lru_items()
# fine everything. some on the lru list, some not
everything = self._cache.cache_data
# remove those items that are on the lru list
for k,v in items:
del everything[k]
# return a list of [ghosts....not recently used.....recently used]
return everything.items() + items
def __repr__(self):
if self._version:
ver = ' (in version %s)' % `self._version`
else:
ver = ''
return '<Connection at %08x%s>' % (id(self),ver)
def _breakcr(self):
try: del self._cache
except: pass
......@@ -414,9 +442,9 @@ class Connection(ExportImport.ExportImport):
for oid in creating:
o=cache_get(oid, None)
if o is not None:
del cache[oid]
del o._p_jar
del o._p_oid
del cache[oid]
#XXX
......@@ -441,9 +469,14 @@ class Connection(ExportImport.ExportImport):
def root(self): return self['\0\0\0\0\0\0\0\0']
def setstate(self, object):
try:
oid=object._p_oid
if self._storage is None:
msg = "Shouldn't load state for %s when the connection is closed" % `oid`
LOG('ZODB',ERROR, msg)
raise RuntimeError(msg)
try:
p, serial = self._storage.load(oid, self._version)
# XXX this is quite conservative!
......
src/ZODB/DB.py
View file @ 226ee421
......@@ -13,8 +13,8 @@
##############################################################################
"""Database objects
$Id: DB.py,v 1.39 2002/02/11 23:40:42 gvanrossum Exp $"""
__version__='$Revision: 1.39 $'[11:-2]
$Id: DB.py,v 1.40 2002/03/27 10:14:04 htrd Exp $"""
__version__='$Revision: 1.40 $'[11:-2]
import cPickle, cStringIO, sys, POSException, UndoLogCompatible
from Connection import Connection
......@@ -177,7 +177,7 @@ class DB(UndoLogCompatible.UndoLogCompatible):
def f(con, detail=detail, rc=sys.getrefcount, conn_no=conn_no):
conn_no[0] = conn_no[0] + 1
cn = conn_no[0]
for oid, ob in con._cache.items():
for oid, ob in con._cache_items():
id=''
if hasattr(ob,'__dict__'):
d=ob.__dict__
......@@ -224,11 +224,21 @@ class DB(UndoLogCompatible.UndoLogCompatible):
def cacheSize(self):
m=[0]
def f(con, m=m):
m[0]=m[0]+len(con._cache)
m[0]=m[0]+con._cache.cache_non_ghost_count
self._connectionMap(f)
return m[0]
def cacheDetailSize(self):
m=[]
def f(con, m=m):
m.append({'connection':repr(con),
'ngsize':con._cache.cache_non_ghost_count,
'size':len(con._cache)})
self._connectionMap(f)
m.sort()
return m
def close(self): self._storage.close()
def commitVersion(self, source, destination=''):
......
src/ZODB/cPersistence.c
View file @ 226ee421
......@@ -14,11 +14,21 @@
static char cPersistence_doc_string[] =
"Defines Persistent mixin class for persistent objects.\n"
"\n"
"$Id: cPersistence.c,v 1.50 2002/03/08 18:36:13 jeremy Exp $\n";
"$Id: cPersistence.c,v 1.51 2002/03/27 10:14:04 htrd Exp $\n";
#include <string.h>
#include "cPersistence.h"
/* the layout of this struct is the same as the start of ccobject in cPickleCache.c */
struct ccobject_head_struct {
PyObject_HEAD
CPersistentRing ring_home;
int non_ghost_count;
};
#define HOME(O) ((!((O)->cache))?(NULL): (&(((struct ccobject_head_struct *)((O)->cache))->ring_home)) )
#define NON_GHOST_COUNT(O) ((!((O)->cache))?(NULL): (&(((struct ccobject_head_struct *)((O)->cache))->non_ghost_count)) )
#define ASSIGN(V,E) {PyObject *__e; __e=(E); Py_XDECREF(V); (V)=__e;}
#define UNLESS(E) if(!(E))
#define UNLESS_ASSIGN(V,E) ASSIGN(V,E) UNLESS(V)
......@@ -112,21 +122,82 @@ if(self->state < 0 && self->jar) \
{ \
PyObject *r; \
\
int *count = NON_GHOST_COUNT(self); \
if(count) \
{ \
(*count)++; \
self->ring.next = HOME(self); \
self->ring.prev = HOME(self)->prev; \
HOME(self)->prev->next = &self->ring; \
HOME(self)->prev = &self->ring; \
Py_INCREF(self); \
} \
self->state=cPersistent_CHANGED_STATE; \
UNLESS(r=callmethod1(self->jar,py_setstate,(PyObject*)self)) \
{ \
self->state=cPersistent_GHOST_STATE; \
ghostify(self); \
return ER; \
} \
self->state=cPersistent_UPTODATE_STATE; \
Py_DECREF(r); \
}
#define KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self) \
if(HOME(self) && self->state>=0) { \
self->ring.prev->next = self->ring.next; \
self->ring.next->prev = self->ring.prev; \
self->ring.next = HOME(self); \
self->ring.prev = HOME(self)->prev; \
HOME(self)->prev->next = &self->ring; \
HOME(self)->prev = &self->ring; }
/****************************************************************************/
staticforward PyExtensionClass Pertype;
static void
accessed(cPersistentObject *self)
{
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
}
static void
ghostify(cPersistentObject *self)
{
int *count;
count = NON_GHOST_COUNT(self);
if(count && (self->state>=0))
{
(*count)--;
self->ring.next->prev = self->ring.prev;
self->ring.prev->next = self->ring.next;
self->ring.prev = NULL;
self->ring.next = NULL;
self->state = cPersistent_GHOST_STATE;
Py_DECREF(self);
}
else
{
self->state = cPersistent_GHOST_STATE;
}
}
static void
deallocated(cPersistentObject *self)
{
if(self->state>=0) ghostify(self);
if(self->cache)
{
PyObject *v=PyObject_CallMethod(self->cache,"_oid_unreferenced","O",self->oid);
if(!v) PyErr_Clear(); /* and explode later */
Py_XDECREF(v);
}
Py_XDECREF(self->jar);
Py_XDECREF(self->oid);
}
static int
changed(cPersistentObject *self)
{
......@@ -185,7 +256,7 @@ Per___changed__(cPersistentObject *self, PyObject *args)
static PyObject *
Per__p_deactivate(cPersistentObject *self, PyObject *args)
{
PyObject *dict;
PyObject *dict,*dict2=NULL;
#ifdef DEBUG_LOG
if (idebug_log < 0) call_debug("reinit",self);
......@@ -197,11 +268,20 @@ Per__p_deactivate(cPersistentObject *self, PyObject *args)
if (self->state==cPersistent_UPTODATE_STATE && self->jar &&
HasInstDict(self) && (dict=INSTANCE_DICT(self)))
{
dict2 = PyDict_Copy(dict);
PyDict_Clear(dict);
/* Note that we need to set to ghost state unless we are
called directly. Methods that override this need to
do the same! */
self->state=cPersistent_GHOST_STATE;
ghostify(self);
}
/* need to delay releasing the last reference on instance attributes
until after we have finished accounting for losing our state */
if(dict2)
{
PyDict_Clear(dict2);
Py_DECREF(dict2);
}
Py_INCREF(Py_None);
......@@ -333,8 +413,8 @@ Per_dealloc(cPersistentObject *self)
#ifdef DEBUG_LOG
if(idebug_log < 0) call_debug("del",self);
#endif
Py_XDECREF(self->jar);
Py_XDECREF(self->oid);
deallocated(self);
Py_XDECREF(self->cache);
Py_DECREF(self->ob_type);
PyObject_DEL(self);
}
......@@ -387,7 +467,7 @@ Per_getattr(cPersistentObject *self, PyObject *oname, char *name,
{
UPDATE_STATE_IF_NECESSARY(self, NULL);
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
if (self->serial[7]=='\0' && self->serial[6]=='\0' &&
self->serial[5]=='\0' && self->serial[4]=='\0' &&
......@@ -419,7 +499,7 @@ Per_getattr(cPersistentObject *self, PyObject *oname, char *name,
{
UPDATE_STATE_IF_NECESSARY(self, NULL);
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
}
return getattrf((PyObject *)self, oname);
......@@ -466,6 +546,21 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
{
if(name[3]=='o' && name[4]=='i' && name[5]=='d' && ! name[6])
{
if(HOME(self))
{
int result;
if(!v)
{
PyErr_SetString(PyExc_ValueError,"can not delete the oid of a cached object");
return -1;
}
if(PyObject_Cmp(self->oid,v,&result)<0) return -1;
if(result)
{
PyErr_SetString(PyExc_ValueError,"can not change the oid of a cached object");
return -1;
}
}
Py_XINCREF(v);
ASSIGN(self->oid, v);
return 0;
......@@ -509,7 +604,6 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
v=PyObject_GetAttr(OBJECT(self), py__p_deactivate);
if (v) { ASSIGN(v, PyObject_CallObject(v, NULL)); }
if (v) { Py_DECREF(v); }
self->state=cPersistent_GHOST_STATE;
return 0;
}
if (PyObject_IsTrue(v)) return changed(self);
......@@ -521,8 +615,7 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
{
UPDATE_STATE_IF_NECESSARY(self, -1);
/* Record access times */
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
if((! (*name=='_' && name[1]=='v' && name[2]=='_'))
&& (self->state != cPersistent_CHANGED_STATE && self->jar)
......@@ -680,9 +773,11 @@ truecPersistenceCAPI = {
(getattrofunc)Per_getattro, /*tp_getattr with object key*/
(setattrofunc)Per_setattro, /*tp_setattr with object key*/
changed,
accessed,
ghostify,
deallocated,
(intfunctionwithpythonarg)Per_setstate,
(pergetattr)Per_getattr,
(persetattr)_setattro,
};
void
......
src/ZODB/cPersistence.h
View file @ 226ee421
......@@ -18,12 +18,21 @@
#include "ExtensionClass.h"
#include <time.h>
#define cPersistent_HEAD PyObject_HEAD PyObject *jar, *oid; char serial[8]; unsigned short atime; signed char state; unsigned char reserved;
#define cPersistent_HEAD PyObject_HEAD PyObject *jar, *oid, *cache; CPersistentRing ring; char serial[8]; signed char state; unsigned char reserved[3];
#define cPersistent_GHOST_STATE -1
#define cPersistent_UPTODATE_STATE 0
#define cPersistent_CHANGED_STATE 1
#define cPersistent_STICKY_STATE 2
struct ccobject_head_struct;
typedef struct CPersistentRing_struct
{
struct CPersistentRing_struct *prev;
struct CPersistentRing_struct *next;
} CPersistentRing;
typedef struct {
cPersistent_HEAD
} cPersistentObject;
......@@ -36,6 +45,9 @@ typedef struct {
getattrofunc getattro;
setattrofunc setattro;
int (*changed)(cPersistentObject*);
void (*accessed)(cPersistentObject*);
void (*ghostify)(cPersistentObject*);
void (*deallocated)(cPersistentObject*);
int (*setstate)(PyObject*);
pergetattr pergetattro;
persetattr persetattro;
......@@ -59,11 +71,13 @@ static cPersistenceCAPIstruct *cPersistenceCAPI;
#define PER_CHANGED(O) (cPersistenceCAPI->changed((cPersistentObject*)(O)))
#define PER_GHOSTIFY(O) (cPersistenceCAPI->ghostify((cPersistentObject*)(O)))
#define PER_ALLOW_DEACTIVATION(O) ((O)->state==cPersistent_STICKY_STATE && ((O)->state=cPersistent_UPTODATE_STATE))
#define PER_PREVENT_DEACTIVATION(O) ((O)->state==cPersistent_UPTODATE_STATE && ((O)->state=cPersistent_STICKY_STATE))
#define PER_DEL(O) Py_XDECREF((O)->jar); Py_XDECREF((O)->oid);
#define PER_DEL(O) (cPersistenceCAPI->deallocated((cPersistentObject*)(O)))
#define PER_USE(O) \
(((O)->state != cPersistent_GHOST_STATE \
......@@ -71,7 +85,7 @@ static cPersistenceCAPIstruct *cPersistenceCAPI;
? (((O)->state==cPersistent_UPTODATE_STATE) \
? ((O)->state=cPersistent_STICKY_STATE) : 1) : 0)
#define PER_ACCESSED(O) ((O)->atime=((long)(time(NULL)/3))%65536)
#define PER_ACCESSED(O) (cPersistenceCAPI->accessed((cPersistentObject*)(O)))
#endif
......
src/ZODB/cPickleCache.c
View file @ 226ee421
This diff is collapsed.
src/persistent/cPersistence.c
View file @ 226ee421
......@@ -14,11 +14,21 @@
static char cPersistence_doc_string[] =
"Defines Persistent mixin class for persistent objects.\n"
"\n"
"$Id: cPersistence.c,v 1.50 2002/03/08 18:36:13 jeremy Exp $\n";
"$Id: cPersistence.c,v 1.51 2002/03/27 10:14:04 htrd Exp $\n";
#include <string.h>
#include "cPersistence.h"
/* the layout of this struct is the same as the start of ccobject in cPickleCache.c */
struct ccobject_head_struct {
PyObject_HEAD
CPersistentRing ring_home;
int non_ghost_count;
};
#define HOME(O) ((!((O)->cache))?(NULL): (&(((struct ccobject_head_struct *)((O)->cache))->ring_home)) )
#define NON_GHOST_COUNT(O) ((!((O)->cache))?(NULL): (&(((struct ccobject_head_struct *)((O)->cache))->non_ghost_count)) )
#define ASSIGN(V,E) {PyObject *__e; __e=(E); Py_XDECREF(V); (V)=__e;}
#define UNLESS(E) if(!(E))
#define UNLESS_ASSIGN(V,E) ASSIGN(V,E) UNLESS(V)
......@@ -112,21 +122,82 @@ if(self->state < 0 && self->jar) \
{ \
PyObject *r; \
\
int *count = NON_GHOST_COUNT(self); \
if(count) \
{ \
(*count)++; \
self->ring.next = HOME(self); \
self->ring.prev = HOME(self)->prev; \
HOME(self)->prev->next = &self->ring; \
HOME(self)->prev = &self->ring; \
Py_INCREF(self); \
} \
self->state=cPersistent_CHANGED_STATE; \
UNLESS(r=callmethod1(self->jar,py_setstate,(PyObject*)self)) \
{ \
self->state=cPersistent_GHOST_STATE; \
ghostify(self); \
return ER; \
} \
self->state=cPersistent_UPTODATE_STATE; \
Py_DECREF(r); \
}
#define KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self) \
if(HOME(self) && self->state>=0) { \
self->ring.prev->next = self->ring.next; \
self->ring.next->prev = self->ring.prev; \
self->ring.next = HOME(self); \
self->ring.prev = HOME(self)->prev; \
HOME(self)->prev->next = &self->ring; \
HOME(self)->prev = &self->ring; }
/****************************************************************************/
staticforward PyExtensionClass Pertype;
static void
accessed(cPersistentObject *self)
{
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
}
static void
ghostify(cPersistentObject *self)
{
int *count;
count = NON_GHOST_COUNT(self);
if(count && (self->state>=0))
{
(*count)--;
self->ring.next->prev = self->ring.prev;
self->ring.prev->next = self->ring.next;
self->ring.prev = NULL;
self->ring.next = NULL;
self->state = cPersistent_GHOST_STATE;
Py_DECREF(self);
}
else
{
self->state = cPersistent_GHOST_STATE;
}
}
static void
deallocated(cPersistentObject *self)
{
if(self->state>=0) ghostify(self);
if(self->cache)
{
PyObject *v=PyObject_CallMethod(self->cache,"_oid_unreferenced","O",self->oid);
if(!v) PyErr_Clear(); /* and explode later */
Py_XDECREF(v);
}
Py_XDECREF(self->jar);
Py_XDECREF(self->oid);
}
static int
changed(cPersistentObject *self)
{
......@@ -185,7 +256,7 @@ Per___changed__(cPersistentObject *self, PyObject *args)
static PyObject *
Per__p_deactivate(cPersistentObject *self, PyObject *args)
{
PyObject *dict;
PyObject *dict,*dict2=NULL;
#ifdef DEBUG_LOG
if (idebug_log < 0) call_debug("reinit",self);
......@@ -197,11 +268,20 @@ Per__p_deactivate(cPersistentObject *self, PyObject *args)
if (self->state==cPersistent_UPTODATE_STATE && self->jar &&
HasInstDict(self) && (dict=INSTANCE_DICT(self)))
{
dict2 = PyDict_Copy(dict);
PyDict_Clear(dict);
/* Note that we need to set to ghost state unless we are
called directly. Methods that override this need to
do the same! */
self->state=cPersistent_GHOST_STATE;
ghostify(self);
}
/* need to delay releasing the last reference on instance attributes
until after we have finished accounting for losing our state */
if(dict2)
{
PyDict_Clear(dict2);
Py_DECREF(dict2);
}
Py_INCREF(Py_None);
......@@ -333,8 +413,8 @@ Per_dealloc(cPersistentObject *self)
#ifdef DEBUG_LOG
if(idebug_log < 0) call_debug("del",self);
#endif
Py_XDECREF(self->jar);
Py_XDECREF(self->oid);
deallocated(self);
Py_XDECREF(self->cache);
Py_DECREF(self->ob_type);
PyObject_DEL(self);
}
......@@ -387,7 +467,7 @@ Per_getattr(cPersistentObject *self, PyObject *oname, char *name,
{
UPDATE_STATE_IF_NECESSARY(self, NULL);
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
if (self->serial[7]=='\0' && self->serial[6]=='\0' &&
self->serial[5]=='\0' && self->serial[4]=='\0' &&
......@@ -419,7 +499,7 @@ Per_getattr(cPersistentObject *self, PyObject *oname, char *name,
{
UPDATE_STATE_IF_NECESSARY(self, NULL);
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
}
return getattrf((PyObject *)self, oname);
......@@ -466,6 +546,21 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
{
if(name[3]=='o' && name[4]=='i' && name[5]=='d' && ! name[6])
{
if(HOME(self))
{
int result;
if(!v)
{
PyErr_SetString(PyExc_ValueError,"can not delete the oid of a cached object");
return -1;
}
if(PyObject_Cmp(self->oid,v,&result)<0) return -1;
if(result)
{
PyErr_SetString(PyExc_ValueError,"can not change the oid of a cached object");
return -1;
}
}
Py_XINCREF(v);
ASSIGN(self->oid, v);
return 0;
......@@ -509,7 +604,6 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
v=PyObject_GetAttr(OBJECT(self), py__p_deactivate);
if (v) { ASSIGN(v, PyObject_CallObject(v, NULL)); }
if (v) { Py_DECREF(v); }
self->state=cPersistent_GHOST_STATE;
return 0;
}
if (PyObject_IsTrue(v)) return changed(self);
......@@ -521,8 +615,7 @@ _setattro(cPersistentObject *self, PyObject *oname, PyObject *v,
{
UPDATE_STATE_IF_NECESSARY(self, -1);
/* Record access times */
self->atime=((long)(time(NULL)/3))%65536;
KEEP_THIS_ONE_AROUND_FOR_A_WHILE(self);
if((! (*name=='_' && name[1]=='v' && name[2]=='_'))
&& (self->state != cPersistent_CHANGED_STATE && self->jar)
......@@ -680,9 +773,11 @@ truecPersistenceCAPI = {
(getattrofunc)Per_getattro, /*tp_getattr with object key*/
(setattrofunc)Per_setattro, /*tp_setattr with object key*/
changed,
accessed,
ghostify,
deallocated,
(intfunctionwithpythonarg)Per_setstate,
(pergetattr)Per_getattr,
(persetattr)_setattro,
};
void
......
src/persistent/cPersistence.h
View file @ 226ee421
......@@ -18,12 +18,21 @@
#include "ExtensionClass.h"
#include <time.h>
#define cPersistent_HEAD PyObject_HEAD PyObject *jar, *oid; char serial[8]; unsigned short atime; signed char state; unsigned char reserved;
#define cPersistent_HEAD PyObject_HEAD PyObject *jar, *oid, *cache; CPersistentRing ring; char serial[8]; signed char state; unsigned char reserved[3];
#define cPersistent_GHOST_STATE -1
#define cPersistent_UPTODATE_STATE 0
#define cPersistent_CHANGED_STATE 1
#define cPersistent_STICKY_STATE 2
struct ccobject_head_struct;
typedef struct CPersistentRing_struct
{
struct CPersistentRing_struct *prev;
struct CPersistentRing_struct *next;
} CPersistentRing;
typedef struct {
cPersistent_HEAD
} cPersistentObject;
......@@ -36,6 +45,9 @@ typedef struct {
getattrofunc getattro;
setattrofunc setattro;
int (*changed)(cPersistentObject*);
void (*accessed)(cPersistentObject*);
void (*ghostify)(cPersistentObject*);
void (*deallocated)(cPersistentObject*);
int (*setstate)(PyObject*);
pergetattr pergetattro;
persetattr persetattro;
......@@ -59,11 +71,13 @@ static cPersistenceCAPIstruct *cPersistenceCAPI;
#define PER_CHANGED(O) (cPersistenceCAPI->changed((cPersistentObject*)(O)))
#define PER_GHOSTIFY(O) (cPersistenceCAPI->ghostify((cPersistentObject*)(O)))
#define PER_ALLOW_DEACTIVATION(O) ((O)->state==cPersistent_STICKY_STATE && ((O)->state=cPersistent_UPTODATE_STATE))
#define PER_PREVENT_DEACTIVATION(O) ((O)->state==cPersistent_UPTODATE_STATE && ((O)->state=cPersistent_STICKY_STATE))
#define PER_DEL(O) Py_XDECREF((O)->jar); Py_XDECREF((O)->oid);
#define PER_DEL(O) (cPersistenceCAPI->deallocated((cPersistentObject*)(O)))
#define PER_USE(O) \
(((O)->state != cPersistent_GHOST_STATE \
......@@ -71,7 +85,7 @@ static cPersistenceCAPIstruct *cPersistenceCAPI;
? (((O)->state==cPersistent_UPTODATE_STATE) \
? ((O)->state=cPersistent_STICKY_STATE) : 1) : 0)
#define PER_ACCESSED(O) ((O)->atime=((long)(time(NULL)/3))%65536)
#define PER_ACCESSED(O) (cPersistenceCAPI->accessed((cPersistentObject*)(O)))
#endif
......
src/persistent/cPickleCache.c
View file @ 226ee421
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