Splits Modules/_bsddb.c up into bsddb.h and _bsddb.c and adds a C API

object available as bsddb.db.api.  This is based on the patch submitted
by Duncan Grisby here:
  http://sourceforge.net/tracker/index.php?func=detail&aid=1551895&group_id=13900&atid=313900
See this thread for additional info:
  http://sourceforge.net/mailarchive/forum.php?thread_name=E1GAVDK-0002rk-Iw%40apasphere.com&forum_name=pybsddb-users

It also cleans up the code a little by removing some ifdef/endifs for
python prior to 2.1 and for unsupported Berkeley DB <= 3.2.
This commit is contained in:
Gregory P. Smith 2007-10-09 06:02:21 +00:00
parent 163f622c03
commit 392505391e
3 changed files with 265 additions and 189 deletions

View File

@ -87,21 +87,16 @@
#include <stddef.h> /* for offsetof() */
#include <Python.h>
#include <db.h>
#define COMPILING_BSDDB_C
#include "bsddb.h"
#undef COMPILING_BSDDB_C
static char *rcs_id = "$Id$";
/* --------------------------------------------------------------------- */
/* Various macro definitions */
/* 40 = 4.0, 33 = 3.3; this will break if the second number is > 9 */
#define DBVER (DB_VERSION_MAJOR * 10 + DB_VERSION_MINOR)
#if DB_VERSION_MINOR > 9
#error "eek! DBVER can't handle minor versions > 9"
#endif
#define PY_BSDDB_VERSION "4.5.0"
static char *rcs_id = "$Id$";
#if (PY_VERSION_HEX < 0x02050000)
typedef int Py_ssize_t;
#endif
@ -196,107 +191,15 @@ static PyObject* DBPermissionsError; /* EPERM */
/* --------------------------------------------------------------------- */
/* Structure definitions */
#if PYTHON_API_VERSION >= 1010 /* python >= 2.1 support weak references */
#define HAVE_WEAKREF
#else
#undef HAVE_WEAKREF
#if PYTHON_API_VERSION < 1010
#error "Python 2.1 or later required"
#endif
/* if Python >= 2.1 better support warnings */
#if PYTHON_API_VERSION >= 1010
#define HAVE_WARNINGS
#else
#undef HAVE_WARNINGS
#endif
#if PYTHON_API_VERSION <= 1007
/* 1.5 compatibility */
#define PyObject_New PyObject_NEW
#define PyObject_Del PyMem_DEL
#endif
struct behaviourFlags {
/* What is the default behaviour when DB->get or DBCursor->get returns a
DB_NOTFOUND || DB_KEYEMPTY error? Return None or raise an exception? */
unsigned int getReturnsNone : 1;
/* What is the default behaviour for DBCursor.set* methods when DBCursor->get
* returns a DB_NOTFOUND || DB_KEYEMPTY error? Return None or raise? */
unsigned int cursorSetReturnsNone : 1;
};
/* Defaults for moduleFlags in DBEnvObject and DBObject. */
#define DEFAULT_GET_RETURNS_NONE 1
#define DEFAULT_CURSOR_SET_RETURNS_NONE 1 /* 0 in pybsddb < 4.2, python < 2.4 */
typedef struct {
PyObject_HEAD
DB_ENV* db_env;
u_int32_t flags; /* saved flags from open() */
int closed;
struct behaviourFlags moduleFlags;
#ifdef HAVE_WEAKREF
PyObject *in_weakreflist; /* List of weak references */
#endif
} DBEnvObject;
typedef struct {
PyObject_HEAD
DB* db;
DBEnvObject* myenvobj; /* PyObject containing the DB_ENV */
u_int32_t flags; /* saved flags from open() */
u_int32_t setflags; /* saved flags from set_flags() */
int haveStat;
struct behaviourFlags moduleFlags;
#if (DBVER >= 33)
PyObject* associateCallback;
PyObject* btCompareCallback;
int primaryDBType;
#endif
#ifdef HAVE_WEAKREF
PyObject *in_weakreflist; /* List of weak references */
#endif
} DBObject;
typedef struct {
PyObject_HEAD
DBC* dbc;
DBObject* mydb;
#ifdef HAVE_WEAKREF
PyObject *in_weakreflist; /* List of weak references */
#endif
} DBCursorObject;
typedef struct {
PyObject_HEAD
DB_TXN* txn;
PyObject *env;
#ifdef HAVE_WEAKREF
PyObject *in_weakreflist; /* List of weak references */
#endif
} DBTxnObject;
typedef struct {
PyObject_HEAD
DB_LOCK lock;
#ifdef HAVE_WEAKREF
PyObject *in_weakreflist; /* List of weak references */
#endif
} DBLockObject;
#if (DBVER >= 43)
typedef struct {
PyObject_HEAD
DB_SEQUENCE* sequence;
DBObject* mydb;
#ifdef HAVE_WEAKREF
PyObject *in_weakreflist; /* List of weak references */
#endif
} DBSequenceObject;
staticforward PyTypeObject DBSequence_Type;
#endif
staticforward PyTypeObject DB_Type, DBCursor_Type, DBEnv_Type, DBTxn_Type, DBLock_Type;
@ -545,12 +448,7 @@ static int makeDBError(int err)
strncat(errTxt, _db_errmsg, bytes_left);
}
_db_errmsg[0] = 0;
#ifdef HAVE_WARNINGS
exceptionRaised = PyErr_Warn(PyExc_RuntimeWarning, errTxt);
#else
fprintf(stderr, errTxt);
fprintf(stderr, "\n");
#endif
#else /* do an exception instead */
errObj = DBIncompleteError;
@ -804,9 +702,7 @@ newDBObject(DBEnvObject* arg, int flags)
self->btCompareCallback = NULL;
self->primaryDBType = 0;
#endif
#ifdef HAVE_WEAKREF
self->in_weakreflist = NULL;
#endif
/* keep a reference to our python DBEnv object */
if (arg) {
@ -857,19 +753,15 @@ DB_dealloc(DBObject* self)
MYDB_BEGIN_ALLOW_THREADS;
self->db->close(self->db, 0);
MYDB_END_ALLOW_THREADS;
#ifdef HAVE_WARNINGS
} else {
PyErr_Warn(PyExc_RuntimeWarning,
"DB could not be closed in destructor: DBEnv already closed");
#endif
}
self->db = NULL;
}
#ifdef HAVE_WEAKREF
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
}
#endif
if (self->myenvobj) {
Py_DECREF(self->myenvobj);
self->myenvobj = NULL;
@ -897,9 +789,7 @@ newDBCursorObject(DBC* dbc, DBObject* db)
self->dbc = dbc;
self->mydb = db;
#ifdef HAVE_WEAKREF
self->in_weakreflist = NULL;
#endif
Py_INCREF(self->mydb);
return self;
}
@ -910,11 +800,9 @@ DBCursor_dealloc(DBCursorObject* self)
{
int err;
#ifdef HAVE_WEAKREF
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
}
#endif
if (self->dbc != NULL) {
MYDB_BEGIN_ALLOW_THREADS;
@ -947,9 +835,7 @@ newDBEnvObject(int flags)
self->flags = flags;
self->moduleFlags.getReturnsNone = DEFAULT_GET_RETURNS_NONE;
self->moduleFlags.cursorSetReturnsNone = DEFAULT_CURSOR_SET_RETURNS_NONE;
#ifdef HAVE_WEAKREF
self->in_weakreflist = NULL;
#endif
MYDB_BEGIN_ALLOW_THREADS;
err = db_env_create(&self->db_env, flags);
@ -968,11 +854,9 @@ newDBEnvObject(int flags)
static void
DBEnv_dealloc(DBEnvObject* self)
{
#ifdef HAVE_WEAKREF
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
}
#endif
if (self->db_env && !self->closed) {
MYDB_BEGIN_ALLOW_THREADS;
@ -992,9 +876,7 @@ newDBTxnObject(DBEnvObject* myenv, DB_TXN *parent, int flags)
return NULL;
Py_INCREF(myenv);
self->env = (PyObject*)myenv;
#ifdef HAVE_WEAKREF
self->in_weakreflist = NULL;
#endif
MYDB_BEGIN_ALLOW_THREADS;
#if (DBVER >= 40)
@ -1015,13 +897,10 @@ newDBTxnObject(DBEnvObject* myenv, DB_TXN *parent, int flags)
static void
DBTxn_dealloc(DBTxnObject* self)
{
#ifdef HAVE_WEAKREF
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
}
#endif
#ifdef HAVE_WARNINGS
if (self->txn) {
/* it hasn't been finalized, abort it! */
MYDB_BEGIN_ALLOW_THREADS;
@ -1034,7 +913,6 @@ DBTxn_dealloc(DBTxnObject* self)
PyErr_Warn(PyExc_RuntimeWarning,
"DBTxn aborted in destructor. No prior commit() or abort().");
}
#endif
Py_DECREF(self->env);
PyObject_Del(self);
@ -1049,9 +927,7 @@ newDBLockObject(DBEnvObject* myenv, u_int32_t locker, DBT* obj,
DBLockObject* self = PyObject_New(DBLockObject, &DBLock_Type);
if (self == NULL)
return NULL;
#ifdef HAVE_WEAKREF
self->in_weakreflist = NULL;
#endif
MYDB_BEGIN_ALLOW_THREADS;
#if (DBVER >= 40)
@ -1073,11 +949,9 @@ newDBLockObject(DBEnvObject* myenv, u_int32_t locker, DBT* obj,
static void
DBLock_dealloc(DBLockObject* self)
{
#ifdef HAVE_WEAKREF
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
}
#endif
/* TODO: is this lock held? should we release it? */
PyObject_Del(self);
@ -1094,9 +968,7 @@ newDBSequenceObject(DBObject* mydb, int flags)
return NULL;
Py_INCREF(mydb);
self->mydb = mydb;
#ifdef HAVE_WEAKREF
self->in_weakreflist = NULL;
#endif
MYDB_BEGIN_ALLOW_THREADS;
@ -1115,11 +987,9 @@ newDBSequenceObject(DBObject* mydb, int flags)
static void
DBSequence_dealloc(DBSequenceObject* self)
{
#ifdef HAVE_WEAKREF
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
}
#endif
Py_DECREF(self->mydb);
PyObject_Del(self);
@ -1201,13 +1071,7 @@ _db_associateCallback(DB* db, const DBT* priKey, const DBT* priData,
Py_ssize_t size;
CLEAR_DBT(*secKey);
#if PYTHON_API_VERSION <= 1007
/* 1.5 compatibility */
size = PyString_Size(result);
data = PyString_AsString(result);
#else
PyString_AsStringAndSize(result, &data, &size);
#endif
secKey->flags = DB_DBT_APPMALLOC; /* DB will free */
secKey->data = malloc(size); /* TODO, check this */
if (secKey->data) {
@ -1346,7 +1210,6 @@ DB_close(DBObject* self, PyObject* args)
}
#if (DBVER >= 32)
static PyObject*
_DB_consume(DBObject* self, PyObject* args, PyObject* kwargs, int consume_flag)
{
@ -1414,8 +1277,6 @@ DB_consume_wait(DBObject* self, PyObject* args, PyObject* kwargs,
{
return _DB_consume(self, args, kwargs, DB_CONSUME_WAIT);
}
#endif
static PyObject*
@ -2423,7 +2284,6 @@ DB_set_re_source(DBObject* self, PyObject* args)
}
#if (DBVER >= 32)
static PyObject*
DB_set_q_extentsize(DBObject* self, PyObject* args)
{
@ -2440,7 +2300,6 @@ DB_set_q_extentsize(DBObject* self, PyObject* args)
RETURN_IF_ERR();
RETURN_NONE();
}
#endif
static PyObject*
DB_stat(DBObject* self, PyObject* args, PyObject* kwargs)
@ -4025,7 +3884,6 @@ DBEnv_set_cachesize(DBEnvObject* self, PyObject* args)
}
#if (DBVER >= 32)
static PyObject*
DBEnv_set_flags(DBEnvObject* self, PyObject* args)
{
@ -4042,7 +3900,6 @@ DBEnv_set_flags(DBEnvObject* self, PyObject* args)
RETURN_IF_ERR();
RETURN_NONE();
}
#endif
static PyObject*
@ -4169,7 +4026,6 @@ DBEnv_set_lk_max(DBEnvObject* self, PyObject* args)
#endif
#if (DBVER >= 32)
static PyObject*
DBEnv_set_lk_max_locks(DBEnvObject* self, PyObject* args)
@ -4221,8 +4077,6 @@ DBEnv_set_lk_max_objects(DBEnvObject* self, PyObject* args)
RETURN_NONE();
}
#endif
static PyObject*
DBEnv_set_mp_mmapsize(DBEnvObject* self, PyObject* args)
@ -4543,19 +4397,15 @@ DBEnv_lock_stat(DBEnvObject* self, PyObject* args)
MAKE_ENTRY(lastid);
#endif
MAKE_ENTRY(nmodes);
#if (DBVER >= 32)
MAKE_ENTRY(maxlocks);
MAKE_ENTRY(maxlockers);
MAKE_ENTRY(maxobjects);
MAKE_ENTRY(nlocks);
MAKE_ENTRY(maxnlocks);
#endif
MAKE_ENTRY(nlockers);
MAKE_ENTRY(maxnlockers);
#if (DBVER >= 32)
MAKE_ENTRY(nobjects);
MAKE_ENTRY(maxnobjects);
#endif
MAKE_ENTRY(nrequests);
MAKE_ENTRY(nreleases);
#if (DBVER < 44)
@ -5143,10 +4993,8 @@ static PyMethodDef DB_methods[] = {
{"associate", (PyCFunction)DB_associate, METH_VARARGS|METH_KEYWORDS},
#endif
{"close", (PyCFunction)DB_close, METH_VARARGS},
#if (DBVER >= 32)
{"consume", (PyCFunction)DB_consume, METH_VARARGS|METH_KEYWORDS},
{"consume_wait", (PyCFunction)DB_consume_wait, METH_VARARGS|METH_KEYWORDS},
#endif
{"cursor", (PyCFunction)DB_cursor, METH_VARARGS|METH_KEYWORDS},
{"delete", (PyCFunction)DB_delete, METH_VARARGS|METH_KEYWORDS},
{"fd", (PyCFunction)DB_fd, METH_VARARGS},
@ -5184,9 +5032,7 @@ static PyMethodDef DB_methods[] = {
{"set_re_len", (PyCFunction)DB_set_re_len, METH_VARARGS},
{"set_re_pad", (PyCFunction)DB_set_re_pad, METH_VARARGS},
{"set_re_source", (PyCFunction)DB_set_re_source, METH_VARARGS},
#if (DBVER >= 32)
{"set_q_extentsize",(PyCFunction)DB_set_q_extentsize,METH_VARARGS},
#endif
{"stat", (PyCFunction)DB_stat, METH_VARARGS|METH_KEYWORDS},
{"sync", (PyCFunction)DB_sync, METH_VARARGS},
#if (DBVER >= 33)
@ -5254,9 +5100,7 @@ static PyMethodDef DBEnv_methods[] = {
{"set_shm_key", (PyCFunction)DBEnv_set_shm_key, METH_VARARGS},
{"set_cachesize", (PyCFunction)DBEnv_set_cachesize, METH_VARARGS},
{"set_data_dir", (PyCFunction)DBEnv_set_data_dir, METH_VARARGS},
#if (DBVER >= 32)
{"set_flags", (PyCFunction)DBEnv_set_flags, METH_VARARGS},
#endif
{"set_lg_bsize", (PyCFunction)DBEnv_set_lg_bsize, METH_VARARGS},
{"set_lg_dir", (PyCFunction)DBEnv_set_lg_dir, METH_VARARGS},
{"set_lg_max", (PyCFunction)DBEnv_set_lg_max, METH_VARARGS},
@ -5267,11 +5111,9 @@ static PyMethodDef DBEnv_methods[] = {
#if (DBVER < 45)
{"set_lk_max", (PyCFunction)DBEnv_set_lk_max, METH_VARARGS},
#endif
#if (DBVER >= 32)
{"set_lk_max_locks", (PyCFunction)DBEnv_set_lk_max_locks, METH_VARARGS},
{"set_lk_max_lockers", (PyCFunction)DBEnv_set_lk_max_lockers, METH_VARARGS},
{"set_lk_max_objects", (PyCFunction)DBEnv_set_lk_max_objects, METH_VARARGS},
#endif
{"set_mp_mmapsize", (PyCFunction)DBEnv_set_mp_mmapsize, METH_VARARGS},
{"set_tmp_dir", (PyCFunction)DBEnv_set_tmp_dir, METH_VARARGS},
{"txn_begin", (PyCFunction)DBEnv_txn_begin, METH_VARARGS|METH_KEYWORDS},
@ -5391,7 +5233,6 @@ statichere PyTypeObject DB_Type = {
0, /*tp_as_sequence*/
&DB_mapping,/*tp_as_mapping*/
0, /*tp_hash*/
#ifdef HAVE_WEAKREF
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
@ -5403,7 +5244,6 @@ statichere PyTypeObject DB_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
offsetof(DBObject, in_weakreflist), /* tp_weaklistoffset */
#endif
};
@ -5424,7 +5264,6 @@ statichere PyTypeObject DBCursor_Type = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
#ifdef HAVE_WEAKREF
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
@ -5436,7 +5275,6 @@ statichere PyTypeObject DBCursor_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
offsetof(DBCursorObject, in_weakreflist), /* tp_weaklistoffset */
#endif
};
@ -5457,7 +5295,6 @@ statichere PyTypeObject DBEnv_Type = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
#ifdef HAVE_WEAKREF
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
@ -5469,7 +5306,6 @@ statichere PyTypeObject DBEnv_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
offsetof(DBEnvObject, in_weakreflist), /* tp_weaklistoffset */
#endif
};
statichere PyTypeObject DBTxn_Type = {
@ -5489,7 +5325,6 @@ statichere PyTypeObject DBTxn_Type = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
#ifdef HAVE_WEAKREF
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
@ -5501,7 +5336,6 @@ statichere PyTypeObject DBTxn_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
offsetof(DBTxnObject, in_weakreflist), /* tp_weaklistoffset */
#endif
};
@ -5522,7 +5356,6 @@ statichere PyTypeObject DBLock_Type = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
#ifdef HAVE_WEAKREF
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
@ -5534,7 +5367,6 @@ statichere PyTypeObject DBLock_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
offsetof(DBLockObject, in_weakreflist), /* tp_weaklistoffset */
#endif
};
#if (DBVER >= 43)
@ -5555,7 +5387,6 @@ statichere PyTypeObject DBSequence_Type = {
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
#ifdef HAVE_WEAKREF
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
@ -5567,7 +5398,6 @@ statichere PyTypeObject DBSequence_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
offsetof(DBSequenceObject, in_weakreflist), /* tp_weaklistoffset */
#endif
};
#endif
@ -5649,6 +5479,9 @@ static PyMethodDef bsddb_methods[] = {
{NULL, NULL} /* sentinel */
};
/* API structure */
static BSDDB_api bsddb_api;
/* --------------------------------------------------------------------- */
/* Module initialization */
@ -5669,6 +5502,7 @@ DL_EXPORT(void) init_bsddb(void)
PyObject* pybsddb_version_s = PyString_FromString( PY_BSDDB_VERSION );
PyObject* db_version_s = PyString_FromString( DB_VERSION_STRING );
PyObject* cvsid_s = PyString_FromString( rcs_id );
PyObject* py_api;
/* Initialize the type of the new type objects here; doing it here
is required for portability to Windows without requiring C++. */
@ -5730,9 +5564,7 @@ DL_EXPORT(void) init_bsddb(void)
ADD_INT(d, DB_INIT_LOG);
ADD_INT(d, DB_INIT_MPOOL);
ADD_INT(d, DB_INIT_TXN);
#if (DBVER >= 32)
ADD_INT(d, DB_JOINENV);
#endif
ADD_INT(d, DB_RECOVER);
ADD_INT(d, DB_RECOVER_FATAL);
@ -5753,11 +5585,9 @@ DL_EXPORT(void) init_bsddb(void)
ADD_INT(d, DB_RDWRMASTER);
ADD_INT(d, DB_RDONLY);
ADD_INT(d, DB_TRUNCATE);
#if (DBVER >= 32)
ADD_INT(d, DB_EXTENT);
ADD_INT(d, DB_CDB_ALLDB);
ADD_INT(d, DB_VERIFY);
#endif
ADD_INT(d, DB_UPGRADE);
ADD_INT(d, DB_AGGRESSIVE);
@ -5801,9 +5631,7 @@ DL_EXPORT(void) init_bsddb(void)
ADD_INT(d, DB_LOCK_READ);
ADD_INT(d, DB_LOCK_WRITE);
ADD_INT(d, DB_LOCK_NOWAIT);
#if (DBVER >= 32)
ADD_INT(d, DB_LOCK_WAIT);
#endif
ADD_INT(d, DB_LOCK_IWRITE);
ADD_INT(d, DB_LOCK_IREAD);
ADD_INT(d, DB_LOCK_IWR);
@ -5818,9 +5646,7 @@ DL_EXPORT(void) init_bsddb(void)
ADD_INT(d, DB_LOCK_RECORD);
ADD_INT(d, DB_LOCK_UPGRADE);
#if (DBVER >= 32)
ADD_INT(d, DB_LOCK_SWITCH);
#endif
#if (DBVER >= 33)
ADD_INT(d, DB_LOCK_UPGRADE_WRITE);
#endif
@ -5881,9 +5707,7 @@ DL_EXPORT(void) init_bsddb(void)
ADD_INT(d, DB_COMMIT);
#endif
ADD_INT(d, DB_CONSUME);
#if (DBVER >= 32)
ADD_INT(d, DB_CONSUME_WAIT);
#endif
ADD_INT(d, DB_CURRENT);
#if (DBVER >= 33)
ADD_INT(d, DB_FAST_STAT);
@ -6061,6 +5885,19 @@ DL_EXPORT(void) init_bsddb(void)
#undef MAKE_EX
/* Initiliase the C API structure and add it to the module */
bsddb_api.db_type = &DB_Type;
bsddb_api.dbcursor_type = &DBCursor_Type;
bsddb_api.dbenv_type = &DBEnv_Type;
bsddb_api.dbtxn_type = &DBTxn_Type;
bsddb_api.dblock_type = &DBLock_Type;
bsddb_api.dbsequence_type = &DBSequence_Type;
bsddb_api.makeDBError = makeDBError;
py_api = PyCObject_FromVoidPtr((void*)&bsddb_api, NULL);
PyDict_SetItemString(d, "api", py_api);
Py_DECREF(py_api);
/* Check for errors */
if (PyErr_Occurred()) {
PyErr_Print();

238
Modules/bsddb.h Normal file
View File

@ -0,0 +1,238 @@
/*----------------------------------------------------------------------
Copyright (c) 1999-2001, Digital Creations, Fredericksburg, VA, USA
and Andrew Kuchling. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
o Redistributions of source code must retain the above copyright
notice, this list of conditions, and the disclaimer that follows.
o Redistributions in binary form must reproduce the above copyright
notice, this list of conditions, and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
o Neither the name of Digital Creations nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS AND CONTRIBUTORS *AS
IS* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL
CREATIONS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.
------------------------------------------------------------------------*/
/*
* Handwritten code to wrap version 3.x of the Berkeley DB library,
* written to replace a SWIG-generated file. It has since been updated
* to compile with BerkeleyDB versions 3.2 through 4.2.
*
* This module was started by Andrew Kuchling to remove the dependency
* on SWIG in a package by Gregory P. Smith who based his work on a
* similar package by Robin Dunn <robin@alldunn.com> which wrapped
* Berkeley DB 2.7.x.
*
* Development of this module then returned full circle back to Robin Dunn
* who worked on behalf of Digital Creations to complete the wrapping of
* the DB 3.x API and to build a solid unit test suite. Robin has
* since gone onto other projects (wxPython).
*
* Gregory P. Smith <greg@krypto.org> is once again the maintainer.
*
* Use the pybsddb-users@lists.sf.net mailing list for all questions.
* Things can change faster than the header of this file is updated. This
* file is shared with the PyBSDDB project at SourceForge:
*
* http://pybsddb.sf.net
*
* This file should remain backward compatible with Python 2.1, but see PEP
* 291 for the most current backward compatibility requirements:
*
* http://www.python.org/peps/pep-0291.html
*
* This module contains 6 types:
*
* DB (Database)
* DBCursor (Database Cursor)
* DBEnv (database environment)
* DBTxn (An explicit database transaction)
* DBLock (A lock handle)
* DBSequence (Sequence)
*
*/
/* --------------------------------------------------------------------- */
/*
* Portions of this module, associated unit tests and build scripts are the
* result of a contract with The Written Word (http://thewrittenword.com/)
* Many thanks go out to them for causing me to raise the bar on quality and
* functionality, resulting in a better bsddb3 package for all of us to use.
*
* --Robin
*/
/* --------------------------------------------------------------------- */
/*
* Work to split it up into a separate header and to add a C API was
* contributed by Duncan Grisby <duncan@tideway.com>. See here:
* http://sourceforge.net/tracker/index.php?func=detail&aid=1551895&group_id=13900&atid=313900
*/
/* --------------------------------------------------------------------- */
#ifndef _BSDDB_H_
#define _BSDDB_H_
#include <db.h>
/* 40 = 4.0, 33 = 3.3; this will break if the minor revision is > 9 */
#define DBVER (DB_VERSION_MAJOR * 10 + DB_VERSION_MINOR)
#if DB_VERSION_MINOR > 9
#error "eek! DBVER can't handle minor versions > 9"
#endif
#define PY_BSDDB_VERSION "4.6.0"
/* Python object definitions */
struct behaviourFlags {
/* What is the default behaviour when DB->get or DBCursor->get returns a
DB_NOTFOUND || DB_KEYEMPTY error? Return None or raise an exception? */
unsigned int getReturnsNone : 1;
/* What is the default behaviour for DBCursor.set* methods when DBCursor->get
* returns a DB_NOTFOUND || DB_KEYEMPTY error? Return None or raise? */
unsigned int cursorSetReturnsNone : 1;
};
typedef struct {
PyObject_HEAD
DB_ENV* db_env;
u_int32_t flags; /* saved flags from open() */
int closed;
struct behaviourFlags moduleFlags;
PyObject *in_weakreflist; /* List of weak references */
} DBEnvObject;
typedef struct {
PyObject_HEAD
DB* db;
DBEnvObject* myenvobj; /* PyObject containing the DB_ENV */
u_int32_t flags; /* saved flags from open() */
u_int32_t setflags; /* saved flags from set_flags() */
int haveStat;
struct behaviourFlags moduleFlags;
#if (DBVER >= 33)
PyObject* associateCallback;
PyObject* btCompareCallback;
int primaryDBType;
#endif
PyObject *in_weakreflist; /* List of weak references */
} DBObject;
typedef struct {
PyObject_HEAD
DBC* dbc;
DBObject* mydb;
PyObject *in_weakreflist; /* List of weak references */
} DBCursorObject;
typedef struct {
PyObject_HEAD
DB_TXN* txn;
PyObject *env;
PyObject *in_weakreflist; /* List of weak references */
} DBTxnObject;
typedef struct {
PyObject_HEAD
DB_LOCK lock;
PyObject *in_weakreflist; /* List of weak references */
} DBLockObject;
#if (DBVER >= 43)
typedef struct {
PyObject_HEAD
DB_SEQUENCE* sequence;
DBObject* mydb;
PyObject *in_weakreflist; /* List of weak references */
} DBSequenceObject;
staticforward PyTypeObject DBSequence_Type;
#endif
/* API structure for use by C code */
/* To access the structure from an external module, use code like the
following (error checking missed out for clarity):
BSDDB_api* bsddb_api;
PyObject* mod;
PyObject* cobj;
mod = PyImport_ImportModule("bsddb._bsddb");
// Use "bsddb3._pybsddb" if you're using the standalone pybsddb add-on.
cobj = PyObject_GetAttrString(mod, "api");
api = (BSDDB_api*)PyCObject_AsVoidPtr(cobj);
Py_DECREF(cobj);
Py_DECREF(mod);
The structure's members must not be changed.
*/
typedef struct {
/* Type objects */
PyTypeObject* db_type;
PyTypeObject* dbcursor_type;
PyTypeObject* dbenv_type;
PyTypeObject* dbtxn_type;
PyTypeObject* dblock_type;
#if (DBVER >= 43)
PyTypeObject* dbsequence_type;
#endif
/* Functions */
int (*makeDBError)(int err);
} BSDDB_api;
#ifndef COMPILING_BSDDB_C
/* If not inside _bsddb.c, define type check macros that use the api
structure. The calling code must have a value named bsddb_api
pointing to the api structure.
*/
#define DBObject_Check(v) ((v)->ob_type == bsddb_api->db_type)
#define DBCursorObject_Check(v) ((v)->ob_type == bsddb_api->dbcursor_type)
#define DBEnvObject_Check(v) ((v)->ob_type == bsddb_api->dbenv_type)
#define DBTxnObject_Check(v) ((v)->ob_type == bsddb_api->dbtxn_type)
#define DBLockObject_Check(v) ((v)->ob_type == bsddb_api->dblock_type)
#if (DBVER >= 43)
#define DBSequenceObject_Check(v) ((v)->ob_type == bsddb_api->dbsequence_type)
#endif
#endif // COMPILING_BSDDB_C
#endif // _BSDDB_H_

View File

@ -801,6 +801,7 @@ class PyBuildExt(build_ext):
# some unusual system configurations (e.g. the directory
# is on an NFS server that goes away).
exts.append(Extension('_bsddb', ['_bsddb.c'],
depends = ['bsddb.h'],
library_dirs=dblib_dir,
runtime_library_dirs=dblib_dir,
include_dirs=db_incs,