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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1999, 2013 Oracle and/or its affiliates. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
#ifdef HAVE_SYSTEM_INCLUDE_FILES
#include <tcl.h>
#endif
#include "dbinc/tcl_db.h"
#include "dbinc/db_page.h"
#include "dbinc/db_am.h"
/*
*
* internal.c --
*
* This file contains internal functions we need to maintain
* state for our Tcl interface.
*
* NOTE: This all uses a linear linked list. If we end up with
* too many info structs such that this is a performance hit, it
* should be redone using hashes or a list per type. The assumption
* is that the user won't have more than a few dozen info structs
* in operation at any given point in time. Even a complicated
* application with a few environments, nested transactions, locking,
* and several databases open, using cursors should not have a
* negative performance impact, in terms of searching the list to
* get/manipulate the info structure.
*/
#define GLOB_CHAR(c) ((c) == '*' || (c) == '?')
/*
* PUBLIC: DBTCL_INFO *_NewInfo __P((Tcl_Interp *,
* PUBLIC: void *, char *, enum INFOTYPE));
*
* _NewInfo --
*
* This function will create a new info structure and fill it in
* with the name and pointer, id and type.
*/
DBTCL_INFO *
_NewInfo(interp, anyp, name, type)
Tcl_Interp *interp;
void *anyp;
char *name;
enum INFOTYPE type;
{
DBTCL_INFO *p;
int ret;
if ((ret = __os_calloc(NULL, sizeof(DBTCL_INFO), 1, &p)) != 0) {
Tcl_SetResult(interp, db_strerror(ret), TCL_STATIC);
return (NULL);
}
if ((ret = __os_strdup(NULL, name, &p->i_name)) != 0) {
Tcl_SetResult(interp, db_strerror(ret), TCL_STATIC);
__os_free(NULL, p);
return (NULL);
}
p->i_interp = interp;
p->i_anyp = anyp;
p->i_type = type;
LIST_INSERT_HEAD(&__db_infohead, p, entries);
return (p);
}
/*
* PUBLIC: void *_NameToPtr __P((CONST char *));
*/
void *
_NameToPtr(name)
CONST char *name;
{
DBTCL_INFO *p;
LIST_FOREACH(p, &__db_infohead, entries)
if (strcmp(name, p->i_name) == 0)
return (p->i_anyp);
return (NULL);
}
/*
* PUBLIC: DBTCL_INFO *_PtrToInfo __P((CONST void *));
*/
DBTCL_INFO *
_PtrToInfo(ptr)
CONST void *ptr;
{
DBTCL_INFO *p;
LIST_FOREACH(p, &__db_infohead, entries)
if (p->i_anyp == ptr)
return (p);
return (NULL);
}
/*
* PUBLIC: DBTCL_INFO *_NameToInfo __P((CONST char *));
*/
DBTCL_INFO *
_NameToInfo(name)
CONST char *name;
{
DBTCL_INFO *p;
if (name == NULL)
return (NULL);
LIST_FOREACH(p, &__db_infohead, entries)
if (strcmp(name, p->i_name) == 0)
return (p);
return (NULL);
}
/*
* PUBLIC: void _SetInfoData __P((DBTCL_INFO *, void *));
*/
void
_SetInfoData(p, data)
DBTCL_INFO *p;
void *data;
{
if (p == NULL)
return;
p->i_anyp = data;
return;
}
/*
* PUBLIC: void _DeleteInfo __P((DBTCL_INFO *));
*/
void
_DeleteInfo(p)
DBTCL_INFO *p;
{
if (p == NULL)
return;
LIST_REMOVE(p, entries);
if (p->i_lockobj.data != NULL)
__os_free(NULL, p->i_lockobj.data);
if (p->i_err != NULL && p->i_err != stderr && p->i_err != stdout) {
(void)fclose(p->i_err);
p->i_err = NULL;
}
if (p->i_msg != NULL && p->i_msg != stderr && p->i_msg != stdout) {
(void)fclose(p->i_msg);
p->i_msg = NULL;
}
if (p->i_errpfx != NULL)
__os_free(NULL, p->i_errpfx);
if (p->i_compare != NULL) {
Tcl_DecrRefCount(p->i_compare);
}
if (p->i_dupcompare != NULL) {
Tcl_DecrRefCount(p->i_dupcompare);
}
if (p->i_hashproc != NULL) {
Tcl_DecrRefCount(p->i_hashproc);
}
if (p->i_part_callback != NULL) {
Tcl_DecrRefCount(p->i_part_callback);
}
if (p->i_second_call != NULL) {
Tcl_DecrRefCount(p->i_second_call);
}
if (p->i_rep_eid != NULL) {
Tcl_DecrRefCount(p->i_rep_eid);
}
if (p->i_rep_send != NULL) {
Tcl_DecrRefCount(p->i_rep_send);
}
if (p->i_type == I_ENV && p->i_event_info != NULL)
__os_free(NULL, p->i_event_info);
if (p->i_type == I_TXN && p->i_commit_token != NULL)
__os_free(NULL, p->i_commit_token);
__os_free(NULL, p->i_name);
__os_free(NULL, p);
return;
}
/*
* PUBLIC: int _SetListElem __P((Tcl_Interp *,
* PUBLIC: Tcl_Obj *, void *, u_int32_t, void *, u_int32_t));
*/
int
_SetListElem(interp, list, elem1, e1cnt, elem2, e2cnt)
Tcl_Interp *interp;
Tcl_Obj *list;
void *elem1, *elem2;
u_int32_t e1cnt, e2cnt;
{
Tcl_Obj *myobjv[2], *thislist;
int myobjc;
myobjc = 2;
myobjv[0] = Tcl_NewByteArrayObj((u_char *)elem1, (int)e1cnt);
myobjv[1] = Tcl_NewByteArrayObj((u_char *)elem2, (int)e2cnt);
thislist = Tcl_NewListObj(myobjc, myobjv);
if (thislist == NULL)
return (TCL_ERROR);
return (Tcl_ListObjAppendElement(interp, list, thislist));
}
/*
* PUBLIC: int _SetListElemInt __P((Tcl_Interp *, Tcl_Obj *, void *, long));
*/
int
_SetListElemInt(interp, list, elem1, elem2)
Tcl_Interp *interp;
Tcl_Obj *list;
void *elem1;
long elem2;
{
Tcl_Obj *myobjv[2], *thislist;
int myobjc;
myobjc = 2;
myobjv[0] =
Tcl_NewByteArrayObj((u_char *)elem1, (int)strlen((char *)elem1));
myobjv[1] = Tcl_NewLongObj(elem2);
thislist = Tcl_NewListObj(myobjc, myobjv);
if (thislist == NULL)
return (TCL_ERROR);
return (Tcl_ListObjAppendElement(interp, list, thislist));
}
#ifdef HAVE_64BIT_TYPES
/*
* PUBLIC: int _SetListElemWideInt __P((Tcl_Interp *,
* PUBLIC: Tcl_Obj *, void *, int64_t));
*/
int
_SetListElemWideInt(interp, list, elem1, elem2)
Tcl_Interp *interp;
Tcl_Obj *list;
void *elem1;
int64_t elem2;
{
Tcl_Obj *myobjv[2], *thislist;
int myobjc;
myobjc = 2;
myobjv[0] =
Tcl_NewByteArrayObj((u_char *)elem1, (int)strlen((char *)elem1));
myobjv[1] = Tcl_NewWideIntObj(elem2);
thislist = Tcl_NewListObj(myobjc, myobjv);
if (thislist == NULL)
return (TCL_ERROR);
return (Tcl_ListObjAppendElement(interp, list, thislist));
}
#endif /* HAVE_64BIT_TYPES */
/*
* PUBLIC: int _SetListRecnoElem __P((Tcl_Interp *, Tcl_Obj *,
* PUBLIC: db_recno_t, u_char *, u_int32_t));
*/
int
_SetListRecnoElem(interp, list, elem1, elem2, e2size)
Tcl_Interp *interp;
Tcl_Obj *list;
db_recno_t elem1;
u_char *elem2;
u_int32_t e2size;
{
Tcl_Obj *myobjv[2], *thislist;
int myobjc;
myobjc = 2;
myobjv[0] = Tcl_NewWideIntObj((Tcl_WideInt)elem1);
myobjv[1] = Tcl_NewByteArrayObj(elem2, (int)e2size);
thislist = Tcl_NewListObj(myobjc, myobjv);
if (thislist == NULL)
return (TCL_ERROR);
return (Tcl_ListObjAppendElement(interp, list, thislist));
}
/*
* PUBLIC: int _SetListHeapElem __P((Tcl_Interp *, Tcl_Obj *,
* PUBLIC: DB_HEAP_RID, u_char *, u_int32_t));
*/
int
_SetListHeapElem(interp, list, elem1, elem2, e2size)
Tcl_Interp *interp;
Tcl_Obj *list;
DB_HEAP_RID elem1;
u_char *elem2;
u_int32_t e2size;
{
Tcl_Obj *intobj, *myobjv[2], *thislist;
int myobjc, result;
result = 0;
myobjc = 2;
myobjv[0] = Tcl_NewListObj(0, NULL);
intobj = Tcl_NewWideIntObj((Tcl_WideInt)elem1.pgno);
result = Tcl_ListObjAppendElement(interp, myobjv[0], intobj);
if (result != TCL_OK)
return (TCL_ERROR);
intobj = Tcl_NewWideIntObj((Tcl_WideInt)elem1.indx);
result = Tcl_ListObjAppendElement(interp, myobjv[0], intobj);
if (result != TCL_OK)
return (TCL_ERROR);
myobjv[1] = Tcl_NewByteArrayObj(elem2, (int)e2size);
thislist = Tcl_NewListObj(myobjc, myobjv);
if (thislist == NULL)
return (TCL_ERROR);
return (Tcl_ListObjAppendElement(interp, list, thislist));
}
/*
* _Set3DBTList --
* This is really analogous to both _SetListElem and
* _SetListRecnoElem--it's used for three-DBT lists returned by
* DB->pget and DBC->pget(). We'd need a family of four functions
* to handle all the recno/non-recno cases, however, so we make
* this a little more aware of the internals and do the logic inside.
*
* XXX
* One of these days all these functions should probably be cleaned up
* to eliminate redundancy and bring them into the standard DB
* function namespace.
*
* PUBLIC: int _Set3DBTList __P((Tcl_Interp *, Tcl_Obj *, DBT *, int,
* PUBLIC: DBT *, int, DBT *));
*/
int
_Set3DBTList(interp, list, elem1, is1recno, elem2, is2recno, elem3)
Tcl_Interp *interp;
Tcl_Obj *list;
DBT *elem1, *elem2, *elem3;
int is1recno, is2recno;
{
Tcl_Obj *myobjv[3], *thislist;
if (is1recno)
myobjv[0] = Tcl_NewWideIntObj(
(Tcl_WideInt)*(db_recno_t *)elem1->data);
else
myobjv[0] = Tcl_NewByteArrayObj(
(u_char *)elem1->data, (int)elem1->size);
if (is2recno)
myobjv[1] = Tcl_NewWideIntObj(
(Tcl_WideInt)*(db_recno_t *)elem2->data);
else
myobjv[1] = Tcl_NewByteArrayObj(
(u_char *)elem2->data, (int)elem2->size);
myobjv[2] = Tcl_NewByteArrayObj(
(u_char *)elem3->data, (int)elem3->size);
thislist = Tcl_NewListObj(3, myobjv);
if (thislist == NULL)
return (TCL_ERROR);
return (Tcl_ListObjAppendElement(interp, list, thislist));
}
/*
* _SetMultiList -- build a list for return from multiple get.
*
* PUBLIC: int _SetMultiList __P((Tcl_Interp *,
* PUBLIC: Tcl_Obj *, DBT *, DBT*, DBTYPE, u_int32_t, DBC*));
*/
int
_SetMultiList(interp, list, key, data, type, flag, dbc)
Tcl_Interp *interp;
Tcl_Obj *list;
DBT *key, *data;
DBTYPE type;
u_int32_t flag;
DBC *dbc;
{
DB *hsdbp;
DB_TXN *txn;
DBT hkey, rkey, rdata;
DBTCL_INFO *dbcip;
db_recno_t recno;
u_int32_t dlen, klen;
int result, ret;
void *pointer, *dp, *kp;
recno = 0;
dlen = 0;
kp = NULL;
hsdbp = NULL;
txn = NULL;
if (type == DB_HEAP) {
memset(&hkey, 0, sizeof(DBT));
memset(&rkey, 0, sizeof(DBT));
rkey.data = &recno;
rkey.size = rkey.ulen = sizeof(recno);
rkey.flags = DB_DBT_USERMEM;
memset(&rdata, 0, sizeof(DBT));
rdata.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
dbcip = _PtrToInfo(dbc);
hsdbp = (dbcip != NULL) ? dbcip->i_parent->hsdbp : NULL;
txn = (dbc != NULL) ? dbc->txn : NULL;
}
DB_MULTIPLE_INIT(pointer, data);
result = TCL_OK;
if (type == DB_RECNO || type == DB_QUEUE)
recno = *(db_recno_t *) key->data;
else
kp = key->data;
klen = key->size;
do {
if (flag & DB_MULTIPLE_KEY) {
if (type == DB_RECNO || type == DB_QUEUE)
DB_MULTIPLE_RECNO_NEXT(pointer,
data, recno, dp, dlen);
else
DB_MULTIPLE_KEY_NEXT(pointer,
data, kp, klen, dp, dlen);
} else
DB_MULTIPLE_NEXT(pointer, data, dp, dlen);
if (pointer == NULL)
break;
if (type == DB_HEAP || type == DB_RECNO || type == DB_QUEUE) {
if (type == DB_HEAP) {
if (flag & DB_MULTIPLE_KEY) {
hkey.data = kp;
hkey.size = klen;
ret = hsdbp->pget(hsdbp, txn,
&hkey, &rkey, &rdata, 0);
result = _ReturnSetup(interp,
ret, DB_RETOK_DBGET(ret), "db get");
if (result == TCL_ERROR)
return (result);
} else
recno = 0;
}
result =
_SetListRecnoElem(interp, list, recno, dp, dlen);
recno++;
/* Wrap around and skip zero. */
if (recno == 0)
recno++;
} else
result = _SetListElem(interp, list, kp, klen, dp, dlen);
} while (result == TCL_OK);
return (result);
}
/*
* PUBLIC: int _GetGlobPrefix __P((char *, char **));
*/
int
_GetGlobPrefix(pattern, prefix)
char *pattern;
char **prefix;
{
int i, j;
char *p;
/*
* Duplicate it, we get enough space and most of the work is done.
*/
if (__os_strdup(NULL, pattern, prefix) != 0)
return (1);
p = *prefix;
for (i = 0, j = 0; p[i] && !GLOB_CHAR(p[i]); i++, j++)
/*
* Check for an escaped character and adjust
*/
if (p[i] == '\\' && p[i+1]) {
p[j] = p[i+1];
i++;
} else
p[j] = p[i];
p[j] = 0;
return (0);
}
/*
* PUBLIC: int _ReturnSetup __P((Tcl_Interp *, int, int, char *));
*/
int
_ReturnSetup(interp, ret, ok, errmsg)
Tcl_Interp *interp;
int ret, ok;
char *errmsg;
{
char *msg;
if (ret > 0)
return (_ErrorSetup(interp, ret, errmsg));
/*
* We either have success or a DB error. If a DB error, set up the
* string. We return an error if not one of the errors we catch.
* If anyone wants to reset the result to return anything different,
* then the calling function is responsible for doing so via
* Tcl_ResetResult or another Tcl_SetObjResult.
*/
if (ret == 0) {
Tcl_SetResult(interp, "0", TCL_STATIC);
return (TCL_OK);
}
msg = db_strerror(ret);
Tcl_AppendResult(interp, msg, NULL);
if (ok)
return (TCL_OK);
else {
Tcl_SetErrorCode(interp, "BerkeleyDB", msg, NULL);
return (TCL_ERROR);
}
}
/*
* PUBLIC: int _ErrorSetup __P((Tcl_Interp *, int, char *));
*/
int
_ErrorSetup(interp, ret, errmsg)
Tcl_Interp *interp;
int ret;
char *errmsg;
{
Tcl_SetErrno(ret);
Tcl_AppendResult(interp, errmsg, ":", Tcl_PosixError(interp), NULL);
return (TCL_ERROR);
}
/*
* PUBLIC: void _ErrorFunc __P((const DB_ENV *, CONST char *, const char *));
*/
void
_ErrorFunc(dbenv, pfx, msg)
const DB_ENV *dbenv;
CONST char *pfx;
const char *msg;
{
DBTCL_INFO *p;
Tcl_Interp *interp;
size_t size;
char *err;
COMPQUIET(dbenv, NULL);
p = _NameToInfo(pfx);
if (p == NULL)
return;
interp = p->i_interp;
size = strlen(pfx) + strlen(msg) + 4;
/*
* If we cannot allocate enough to put together the prefix
* and message then give them just the message.
*/
if (__os_malloc(NULL, size, &err) != 0) {
Tcl_AddErrorInfo(interp, msg);
Tcl_AppendResult(interp, msg, "\n", NULL);
return;
}
snprintf(err, size, "%s: %s", pfx, msg);
Tcl_AddErrorInfo(interp, err);
Tcl_AppendResult(interp, err, "\n", NULL);
__os_free(NULL, err);
return;
}
#ifdef CONFIG_TEST
/*
* PUBLIC: #ifdef CONFIG_TEST
* PUBLIC: void _EventFunc __P((DB_ENV *, u_int32_t, void *));
* PUBLIC: #endif
*/
void
_EventFunc(dbenv, event, info)
DB_ENV *dbenv;
u_int32_t event;
void *info;
{
DBTCL_INFO *ip;
u_int32_t bit_flag;
ip = (DBTCL_INFO *)dbenv->app_private;
DB_ASSERT(dbenv->env, ip->i_event_info != NULL);
DB_ASSERT(dbenv->env, event < 32); /* Flag bits fit in 32-bit word. */
if (tcl_LockMutex(dbenv, ip->i_mutex) != 0) {
(void)puts("FAIL: __mutex_lock failed");
return;
}
/* Record the fact that this event occurred. */
bit_flag = 1 << event;
ip->i_event_info->events |= bit_flag;
/*
* For events that have associated "info" (currently most don't), save
* the info too.
*/
switch (event) {
case DB_EVENT_PANIC:
/*
* Info is the original error code.
*/
ip->i_event_info->panic_error = *(int *)info;
break;
case DB_EVENT_REG_ALIVE:
/*
* Info is the attached process's PID.
*/
ip->i_event_info->attached_process = *(pid_t *)info;
break;
case DB_EVENT_REP_CONNECT_BROKEN:
/*
* Info is a struct containing the EID whose connection has
* broken, and the system error code indicating the reason.
*/
ip->i_event_info->conn_broken_info =
*(DB_REPMGR_CONN_ERR *)info;
break;
case DB_EVENT_REP_CONNECT_ESTD:
/*
* Info is the EID whose connection has been established.
*/
ip->i_event_info->connected_eid = *(int *)info;
break;
case DB_EVENT_REP_CONNECT_TRY_FAILED:
/*
* Info is a struct containing the EID of the site to which we
* failed to connect, and the system error code indicating the
* reason.
*/
ip->i_event_info->conn_failed_try_info =
*(DB_REPMGR_CONN_ERR *)info;
break;
case DB_EVENT_REP_NEWMASTER:
/*
* Info is the EID of the new master.
*/
ip->i_event_info->newmaster_eid = *(int *)info;
break;
case DB_EVENT_REP_SITE_ADDED:
/*
* Info is the EID of the added site.
*/
ip->i_event_info->added_eid = *(int *)info;
break;
case DB_EVENT_REP_SITE_REMOVED:
/*
* Info is the EID of the removed site.
*/
ip->i_event_info->removed_eid = *(int *)info;
break;
case DB_EVENT_REP_WOULD_ROLLBACK:
/*
* Info is the sync-point LSN.
*/
ip->i_event_info->sync_point = *(DB_LSN *)info;
break;
default:
/* Remaining events don't use "info": so nothing to do. */
break;
}
if (tcl_UnlockMutex(dbenv, ip->i_mutex) != 0)
(void)puts("FAIL: __mutex_unlock failed");
}
#endif
#define INVALID_LSNMSG "Invalid LSN with %d parts. Should have 2.\n"
/*
* PUBLIC: int _GetLsn __P((Tcl_Interp *, Tcl_Obj *, DB_LSN *));
*/
int
_GetLsn(interp, obj, lsn)
Tcl_Interp *interp;
Tcl_Obj *obj;
DB_LSN *lsn;
{
Tcl_Obj **myobjv;
char msg[MSG_SIZE];
int myobjc, result;
u_int32_t tmp;
result = Tcl_ListObjGetElements(interp, obj, &myobjc, &myobjv);
if (result == TCL_ERROR)
return (result);
if (myobjc != 2) {
result = TCL_ERROR;
snprintf(msg, MSG_SIZE, INVALID_LSNMSG, myobjc);
Tcl_SetResult(interp, msg, TCL_VOLATILE);
return (result);
}
result = _GetUInt32(interp, myobjv[0], &tmp);
if (result == TCL_ERROR)
return (result);
lsn->file = tmp;
result = _GetUInt32(interp, myobjv[1], &tmp);
lsn->offset = tmp;
return (result);
}
#define INVALID_RIDMSG "Invalid RID with %d parts. Should have 2.\n"
/*
* PUBLIC: int _GetRid __P((Tcl_Interp *, Tcl_Obj *, DB_HEAP_RID *));
*/
int
_GetRid(interp, obj, rid)
Tcl_Interp *interp;
Tcl_Obj *obj;
DB_HEAP_RID *rid;
{
Tcl_Obj **myobjv;
char msg[MSG_SIZE];
int myobjc, result;
u_int32_t tmp;
result = Tcl_ListObjGetElements(interp, obj, &myobjc, &myobjv);
if (result == TCL_ERROR)
return (result);
if (myobjc != 2) {
result = TCL_ERROR;
snprintf(msg, MSG_SIZE, INVALID_RIDMSG, myobjc);
Tcl_SetResult(interp, msg, TCL_VOLATILE);
return (result);
}
result = _GetUInt32(interp, myobjv[0], &tmp);
if (result == TCL_ERROR)
return (result);
rid->pgno = tmp;
result = _GetUInt32(interp, myobjv[1], &tmp);
rid->indx = (u_int16_t)tmp;
return (result);
}
/*
* _GetUInt32 --
* Get a u_int32_t from a Tcl object. Tcl_GetIntFromObj does the
* right thing most of the time, but on machines where a long is 8 bytes
* and an int is 4 bytes, it errors on integers between the maximum
* int32_t and the maximum u_int32_t. This is correct, but we generally
* want a u_int32_t in the end anyway, so we use Tcl_GetLongFromObj and do
* the bounds checking ourselves.
*
* This code looks much like Tcl_GetIntFromObj, only with a different
* bounds check. It's essentially Tcl_GetUnsignedIntFromObj, which
* unfortunately doesn't exist.
*
* PUBLIC: int _GetUInt32 __P((Tcl_Interp *, Tcl_Obj *, u_int32_t *));
*/
int
_GetUInt32(interp, obj, resp)
Tcl_Interp *interp;
Tcl_Obj *obj;
u_int32_t *resp;
{
int result;
long ltmp;
result = Tcl_GetLongFromObj(interp, obj, <mp);
if (result != TCL_OK)
return (result);
if ((unsigned long)ltmp != (u_int32_t)ltmp) {
if (interp != NULL) {
Tcl_ResetResult(interp);
Tcl_AppendToObj(Tcl_GetObjResult(interp),
"integer value too large for u_int32_t", -1);
}
return (TCL_ERROR);
}
*resp = (u_int32_t)ltmp;
return (TCL_OK);
}
/*
* _GetFlagsList --
* Get a new Tcl object, containing a list of the string values
* associated with a particular set of flag values.
*
* PUBLIC: Tcl_Obj *_GetFlagsList __P((Tcl_Interp *, u_int32_t, const FN *));
*/
Tcl_Obj *
_GetFlagsList(interp, flags, fnp)
Tcl_Interp *interp;
u_int32_t flags;
const FN *fnp;
{
Tcl_Obj *newlist, *newobj;
int result;
newlist = Tcl_NewObj();
/*
* If the Berkeley DB library wasn't compiled with statistics, then
* we may get a NULL reference.
*/
if (fnp == NULL)
return (newlist);
/*
* Append a Tcl_Obj containing each pertinent flag string to the
* specified Tcl list.
*/
for (; fnp->mask != 0; ++fnp)
if (LF_ISSET(fnp->mask)) {
newobj = NewStringObj(fnp->name, strlen(fnp->name));
result =
Tcl_ListObjAppendElement(interp, newlist, newobj);
/*
* Tcl_ListObjAppendElement is defined to return TCL_OK
* unless newlist isn't actually a list (or convertible
* into one). If this is the case, we screwed up badly
* somehow.
*/
DB_ASSERT(NULL, result == TCL_OK);
}
return (newlist);
}
int __debug_stop, __debug_on, __debug_print, __debug_test;
/*
* PUBLIC: void _debug_check __P((void));
*/
void
_debug_check()
{
if (__debug_on == 0)
return;
if (__debug_print != 0) {
printf("\r%7d:", __debug_on);
(void)fflush(stdout);
}
if (__debug_on++ == __debug_test || __debug_stop)
__db_loadme();
}
/*
* XXX
* Tcl 8.1+ Tcl_GetByteArrayFromObj/Tcl_GetIntFromObj bug.
*
* There is a bug in Tcl 8.1+ and byte arrays in that if it happens
* to use an object as both a byte array and something else like
* an int, and you've done a Tcl_GetByteArrayFromObj, then you
* do a Tcl_GetIntFromObj, your memory is deleted.
*
* Workaround is for all byte arrays we want to use, if it can be
* represented as an integer, we copy it so that we don't lose the
* memory.
*/
/*
* PUBLIC: int _CopyObjBytes __P((Tcl_Interp *, Tcl_Obj *obj, void *,
* PUBLIC: u_int32_t *, int *));
*/
int
_CopyObjBytes(interp, obj, newp, sizep, freep)
Tcl_Interp *interp;
Tcl_Obj *obj;
void *newp;
u_int32_t *sizep;
int *freep;
{
void *tmp, *new;
int i, len, ret;
/*
* If the object is not an int, then just return the byte
* array because it won't be transformed out from under us.
* If it is a number, we need to copy it.
*/
*freep = 0;
ret = Tcl_GetIntFromObj(interp, obj, &i);
tmp = Tcl_GetByteArrayFromObj(obj, &len);
*sizep = (u_int32_t)len;
if (ret == TCL_ERROR) {
Tcl_ResetResult(interp);
*(void **)newp = tmp;
return (0);
}
/*
* If we get here, we have an integer that might be reused
* at some other point so we cannot count on GetByteArray
* keeping our pointer valid.
*/
if ((ret = __os_malloc(NULL, (size_t)len, &new)) != 0)
return (ret);
memcpy(new, tmp, (size_t)len);
*(void **)newp = new;
*freep = 1;
return (0);
}
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