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Test interaction of incremental io and other database writes. (CVS 3922)

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FossilOrigin-Name: 4516416b4d38679ea7d259155f241e54c4c58d7d
This commit is contained in:
danielk1977
2007-05-04 18:36:44 +00:00
parent ca5557f91d
commit dcbb5d3f47
8 changed files with 311 additions and 60 deletions
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58
src/vdbeblob.c
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@@ -10,7 +10,7 @@
**
*************************************************************************
**
** $Id: vdbeblob.c,v 1.7 2007/05/04 13:15:57 drh Exp $
** $Id: vdbeblob.c,v 1.8 2007/05/04 18:36:45 danielk1977 Exp $
*/
#include "sqliteInt.h"
@@ -244,32 +244,56 @@ int sqlite3_blob_close(sqlite3_blob *pBlob){
return sqlite3_finalize(pStmt);
}
int blobReadWrite(
sqlite3_blob *pBlob,
void *z,
int n,
int iOffset,
int (*xCall)(BtCursor*, u32, u32, void*)
){
int rc;
Incrblob *p = (Incrblob *)pBlob;
Vdbe *v = (Vdbe *)(p->pStmt);
sqlite3 *db;
/* If there is no statement handle, then the blob-handle has
** already been invalidated. Return SQLITE_ABORT in this case.
*/
if( !v ) return SQLITE_ABORT;
/* Request is out of range. Return a transient error. */
if( (iOffset+n)>p->nByte ){
return SQLITE_ERROR;
}
/* Call either BtreeData() or BtreePutData(). If SQLITE_ABORT is
** returned, clean-up the statement handle.
*/
db = v->db;
rc = xCall(p->pCsr, iOffset+p->iOffset, n, z);
if( rc==SQLITE_ABORT ){
sqlite3VdbeFinalize(v);
p->pStmt = 0;
}else{
v->rc = rc;
}
return sqlite3ApiExit(db, rc);
}
/*
** Read data from a blob handle.
*/
int sqlite3_blob_read(sqlite3_blob *pBlob, void *z, int n, int iOffset){
int rc = SQLITE_ERROR;
Incrblob *p = (Incrblob *)pBlob;
Vdbe *v = (Vdbe *)(p->pStmt);
if( (iOffset+n)<=p->nByte ){
rc = sqlite3BtreeData(p->pCsr, iOffset+p->iOffset, n, z);
}
v->rc = rc;
return sqlite3ApiExit(v->db, v->rc);
return blobReadWrite(pBlob, z, n, iOffset, sqlite3BtreeData);
}
/*
** Write data to a blob handle.
*/
int sqlite3_blob_write(sqlite3_blob *pBlob, const void *z, int n, int iOffset){
int rc = SQLITE_ERROR;
Incrblob *p = (Incrblob *)pBlob;
Vdbe *v = (Vdbe *)(p->pStmt);
if( (iOffset+n)<=p->nByte ){
rc = sqlite3BtreePutData(p->pCsr, iOffset+p->iOffset, n, z);
}
v->rc = rc;
return sqlite3ApiExit(v->db, v->rc);
return blobReadWrite(pBlob, (void *)z, n, iOffset, sqlite3BtreePutData);
}
/*