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-rw-r--r--Modules/bsddbmodule.c170
1 files changed, 148 insertions, 22 deletions
diff --git a/Modules/bsddbmodule.c b/Modules/bsddbmodule.c
index ee979b8..b3474c4 100644
--- a/Modules/bsddbmodule.c
+++ b/Modules/bsddbmodule.c
@@ -41,6 +41,9 @@ PERFORMANCE OF THIS SOFTWARE.
*/
#include "Python.h"
+#ifdef WITH_THREAD
+#include "thread.h"
+#endif
#include <sys/types.h>
#include <sys/stat.h>
@@ -53,6 +56,9 @@ typedef struct {
PyObject_HEAD
DB *di_bsddb;
int di_size; /* -1 means recompute */
+#ifdef WITH_THREAD
+ type_lock di_lock;
+#endif
} bsddbobject;
staticforward PyTypeObject Bsddbtype;
@@ -93,14 +99,27 @@ newdbhashobject(file, flags, mode,
#ifdef O_BINARY
flags |= O_BINARY;
#endif
- if ((dp->di_bsddb = dbopen(file, flags,
- mode, DB_HASH, &info)) == NULL) {
+ Py_BEGIN_ALLOW_THREADS
+ dp->di_bsddb = dbopen(file, flags, mode, DB_HASH, &info);
+ Py_END_ALLOW_THREADS
+ if (dp->di_bsddb == NULL) {
PyErr_SetFromErrno(BsddbError);
+#ifdef WITH_THREAD
+ dp->di_lock = NULL;
+#endif
Py_DECREF(dp);
return NULL;
}
dp->di_size = -1;
+#ifdef WITH_THREAD
+ dp->di_lock = allocate_lock();
+ if (dp->di_lock == NULL) {
+ PyErr_SetString(BsddbError, "can't allocate lock");
+ Py_DECREF(dp);
+ return NULL;
+ }
+#endif
return (PyObject *)dp;
}
@@ -136,14 +155,27 @@ newdbbtobject(file, flags, mode,
#ifdef O_BINARY
flags |= O_BINARY;
#endif
- if ((dp->di_bsddb = dbopen(file, flags,
- mode, DB_BTREE, &info)) == NULL) {
+ Py_BEGIN_ALLOW_THREADS
+ dp->di_bsddb = dbopen(file, flags, mode, DB_BTREE, &info);
+ Py_END_ALLOW_THREADS
+ if (dp->di_bsddb == NULL) {
PyErr_SetFromErrno(BsddbError);
+#ifdef WITH_THREAD
+ dp->di_lock = NULL;
+#endif
Py_DECREF(dp);
return NULL;
}
dp->di_size = -1;
+#ifdef WITH_THREAD
+ dp->di_lock = allocate_lock();
+ if (dp->di_lock == NULL) {
+ PyErr_SetString(BsddbError, "can't allocate lock");
+ Py_DECREF(dp);
+ return NULL;
+ }
+#endif
return (PyObject *)dp;
}
@@ -179,25 +211,49 @@ newdbrnobject(file, flags, mode,
#ifdef O_BINARY
flags |= O_BINARY;
#endif
- if ((dp->di_bsddb = dbopen(file, flags, mode,
- DB_RECNO, &info)) == NULL) {
+ Py_BEGIN_ALLOW_THREADS
+ dp->di_bsddb = dbopen(file, flags, mode, DB_RECNO, &info);
+ Py_END_ALLOW_THREADS
+ if (dp->di_bsddb == NULL) {
PyErr_SetFromErrno(BsddbError);
+#ifdef WITH_THREAD
+ dp->di_lock = NULL;
+#endif
Py_DECREF(dp);
return NULL;
}
dp->di_size = -1;
+#ifdef WITH_THREAD
+ dp->di_lock = allocate_lock();
+ if (dp->di_lock == NULL) {
+ PyErr_SetString(BsddbError, "can't allocate lock");
+ Py_DECREF(dp);
+ return NULL;
+ }
+#endif
return (PyObject *)dp;
}
-
static void
bsddb_dealloc(dp)
bsddbobject *dp;
{
+#ifdef WITH_THREAD
+ if (dp->di_lock) {
+ acquire_lock(dp->di_lock, 0);
+ release_lock(dp->di_lock);
+ free_lock(dp->di_lock);
+ dp->di_lock = NULL;
+ }
+#endif
if (dp->di_bsddb != NULL) {
- if ((dp->di_bsddb->close)(dp->di_bsddb) != 0)
+ int status;
+ Py_BEGIN_ALLOW_THREADS
+ status = (dp->di_bsddb->close)(dp->di_bsddb);
+ Py_END_ALLOW_THREADS
+ if (status != 0)
fprintf(stderr,
"Python bsddb: close errno %d in dealloc\n",
errno);
@@ -205,6 +261,14 @@ bsddb_dealloc(dp)
PyMem_DEL(dp);
}
+#ifdef WITH_THREAD
+#define BSDDB_BGN_SAVE(_dp) Py_BEGIN_ALLOW_THREADS acquire_lock(_dp->di_lock,1);
+#define BSDDB_END_SAVE(_dp) release_lock(_dp->di_lock); Py_END_ALLOW_THREADS
+#else
+#define BSDDB_BGN_SAVE(_dp) Py_BEGIN_ALLOW_THREADS
+#define BSDDB_END_SAVE(_dp) Py_END_ALLOW_THREADS
+#endif
+
static int
bsddb_length(dp)
bsddbobject *dp;
@@ -217,12 +281,14 @@ bsddb_length(dp)
DBT krec, drec;
int status;
int size = 0;
+ BSDDB_BGN_SAVE(dp)
for (status = (dp->di_bsddb->seq)(dp->di_bsddb,
&krec, &drec,R_FIRST);
status == 0;
status = (dp->di_bsddb->seq)(dp->di_bsddb,
&krec, &drec, R_NEXT))
size++;
+ BSDDB_END_SAVE(dp)
if (status < 0) {
PyErr_SetFromErrno(BsddbError);
return -1;
@@ -239,8 +305,9 @@ bsddb_subscript(dp, key)
{
int status;
DBT krec, drec;
- char *data;
+ char *data,buf[4096];
int size;
+ PyObject *result;
if (!PyArg_Parse(key, "s#", &data, &size))
return NULL;
@@ -249,7 +316,14 @@ bsddb_subscript(dp, key)
krec.data = data;
krec.size = size;
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->get)(dp->di_bsddb, &krec, &drec, 0);
+ if (status == 0) {
+ if (drec.size > sizeof(buf)) data = malloc(drec.size);
+ else data = buf;
+ memcpy(data,drec.data,drec.size);
+ }
+ BSDDB_END_SAVE(dp)
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
@@ -258,7 +332,9 @@ bsddb_subscript(dp, key)
return NULL;
}
- return PyString_FromStringAndSize((char *)drec.data, (int)drec.size);
+ result = PyString_FromStringAndSize(data, (int)drec.size);
+ if (data != buf) free(data);
+ return result;
}
static int
@@ -284,7 +360,9 @@ bsddb_ass_sub(dp, key, value)
krec.size = size;
dp->di_size = -1;
if (value == NULL) {
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->del)(dp->di_bsddb, &krec, 0);
+ BSDDB_END_SAVE(dp)
}
else {
if (!PyArg_Parse(value, "s#", &data, &size)) {
@@ -305,7 +383,9 @@ bsddb_ass_sub(dp, key, value)
printf("before put key= '%s', size= %d\n",
krec.data, krec.size);
#endif
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->put)(dp->di_bsddb, &krec, &drec, 0);
+ BSDDB_END_SAVE(dp)
}
if (status != 0) {
if (status < 0)
@@ -331,7 +411,11 @@ bsddb_close(dp, args)
if (!PyArg_NoArgs(args))
return NULL;
if (dp->di_bsddb != NULL) {
- if ((dp->di_bsddb->close)(dp->di_bsddb) != 0) {
+ int status;
+ BSDDB_BGN_SAVE(dp)
+ status = (dp->di_bsddb->close)(dp->di_bsddb);
+ BSDDB_END_SAVE(dp)
+ if (status != 0) {
dp->di_bsddb = NULL;
PyErr_SetFromErrno(BsddbError);
return NULL;
@@ -349,6 +433,7 @@ bsddb_keys(dp, args)
{
PyObject *list, *item;
DBT krec, drec;
+ char *data,buf[4096];
int status;
int err;
@@ -358,12 +443,17 @@ bsddb_keys(dp, args)
list = PyList_New(0);
if (list == NULL)
return NULL;
- for (status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_FIRST);
- status == 0;
- status = (dp->di_bsddb->seq)(dp->di_bsddb,
- &krec, &drec, R_NEXT)) {
- item = PyString_FromStringAndSize((char *)krec.data,
- (int)krec.size);
+ BSDDB_BGN_SAVE(dp)
+ status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_FIRST);
+ if (status == 0) {
+ if (krec.size > sizeof(buf)) data = malloc(krec.size);
+ else data = buf;
+ memcpy(data,krec.data,krec.size);
+ }
+ BSDDB_END_SAVE(dp)
+ while (status == 0) {
+ item = PyString_FromStringAndSize(data, (int)krec.size);
+ if (data != buf) free(data);
if (item == NULL) {
Py_DECREF(list);
return NULL;
@@ -374,6 +464,14 @@ bsddb_keys(dp, args)
Py_DECREF(list);
return NULL;
}
+ BSDDB_BGN_SAVE(dp)
+ status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_NEXT);
+ if (status == 0) {
+ if (krec.size > sizeof(buf)) data = malloc(krec.size);
+ else data = buf;
+ memcpy(data,krec.data,krec.size);
+ }
+ BSDDB_END_SAVE(dp)
}
if (status < 0) {
PyErr_SetFromErrno(BsddbError);
@@ -401,7 +499,9 @@ bsddb_has_key(dp, args)
krec.data = data;
krec.size = size;
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->get)(dp->di_bsddb, &krec, &drec, 0);
+ BSDDB_END_SAVE(dp)
if (status < 0) {
PyErr_SetFromErrno(BsddbError);
return NULL;
@@ -417,8 +517,9 @@ bsddb_set_location(dp, key)
{
int status;
DBT krec, drec;
- char *data;
+ char *data,buf[4096];
int size;
+ PyObject *result;
if (!PyArg_Parse(key, "s#", &data, &size))
return NULL;
@@ -426,7 +527,14 @@ bsddb_set_location(dp, key)
krec.data = data;
krec.size = size;
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_CURSOR);
+ if (status == 0) {
+ if (drec.size > sizeof(buf)) data = malloc(drec.size);
+ else data = buf;
+ memcpy(data,drec.data,drec.size);
+ }
+ BSDDB_END_SAVE(dp)
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
@@ -435,8 +543,9 @@ bsddb_set_location(dp, key)
return NULL;
}
- return Py_BuildValue("s#s#", krec.data, krec.size,
- drec.data, drec.size);
+ result = Py_BuildValue("s#s#", krec.data, krec.size, data, drec.size);
+ if (data != buf) free(data);
+ return result;
}
static PyObject *
@@ -447,6 +556,9 @@ bsddb_seq(dp, args, sequence_request)
{
int status;
DBT krec, drec;
+ char *kdata,kbuf[4096];
+ char *ddata,dbuf[4096];
+ PyObject *result;
if (!PyArg_NoArgs(args))
return NULL;
@@ -455,8 +567,18 @@ bsddb_seq(dp, args, sequence_request)
krec.data = 0;
krec.size = 0;
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec,
&drec, sequence_request);
+ if (status == 0) {
+ if (krec.size > sizeof(kbuf)) kdata = malloc(krec.size);
+ else kdata = kbuf;
+ memcpy(kdata,krec.data,krec.size);
+ if (drec.size > sizeof(dbuf)) ddata = malloc(drec.size);
+ else ddata = dbuf;
+ memcpy(ddata,drec.data,drec.size);
+ }
+ BSDDB_END_SAVE(dp)
if (status != 0) {
if (status < 0)
PyErr_SetFromErrno(BsddbError);
@@ -465,8 +587,10 @@ bsddb_seq(dp, args, sequence_request)
return NULL;
}
- return Py_BuildValue("s#s#", krec.data, krec.size,
- drec.data, drec.size);
+ result = Py_BuildValue("s#s#", kdata, krec.size, ddata, drec.size);
+ if (kdata != kbuf) free(kdata);
+ if (ddata != dbuf) free(ddata);
+ return result;
}
static PyObject *
@@ -507,7 +631,9 @@ bsddb_sync(dp, args)
if (!PyArg_NoArgs(args))
return NULL;
check_bsddbobject_open(dp);
+ BSDDB_BGN_SAVE(dp)
status = (dp->di_bsddb->sync)(dp->di_bsddb, 0);
+ BSDDB_END_SAVE(dp)
if (status != 0) {
PyErr_SetFromErrno(BsddbError);
return NULL;
generated by cgit v0.12 at 2025-03-03 17:15:15 (GMT)