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Overview
| Comment: | Fix harmless compiler warnings in changebatch. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | changebatch |
| Files: | files | file ages | folders |
| SHA1: | a721a738184d914fcde3f5684099984a |
| User & Date: | drh 2016-08-23 18:09:37 |
Context
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2016-08-23
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| 19:02 | Add further tests for changebatch. And a fix to prevent a changeset from conflicting with itself. check-in: 506d6ff4 user: dan tags: changebatch | |
| 18:09 | Fix harmless compiler warnings in changebatch. check-in: a721a738 user: drh tags: changebatch | |
| 17:02 | Add a new method to sessions - sqlite3sessions_fullchangeset() - to return a changeset that always contains values for all old.* fields. Update changebatch to use these values to more reliably detect multi-column UNIQUE constraint violations. check-in: efa761b2 user: dan tags: changebatch | |
Changes
Changes to ext/session/sqlite3changebatch.c.
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** Return the hash bucket that pEntry belongs in.
*/
static int cbHash(sqlite3_changebatch *p, BatchIndexEntry *pEntry){
unsigned int iHash = (unsigned int)pEntry->iIdxId;
unsigned char *pEnd = (unsigned char*)&pEntry->aRecord[pEntry->szRecord];
unsigned char *pIter;
for(pIter=pEntry->aRecord; pIter<pEnd; pIter++){
iHash += (iHash << 7) + *pIter;
}
return (int)(iHash % p->nHash);
}
/*
................................................................................
apNew = cbMalloc(&rc, sizeof(BatchIndexEntry*) * nNew);
if( rc==SQLITE_OK ){
int nHash = p->nHash;
p->nHash = nNew;
for(i=0; i<nHash; i++){
BatchIndexEntry *pEntry;
while( pEntry=p->apHash[i] ){
int iHash = cbHash(p, pEntry);
p->apHash[i] = pEntry->pNext;
pEntry->pNext = apNew[iHash];
apNew[iHash] = pEntry;
}
}
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** Return the hash bucket that pEntry belongs in.
*/
static int cbHash(sqlite3_changebatch *p, BatchIndexEntry *pEntry){
unsigned int iHash = (unsigned int)pEntry->iIdxId;
unsigned char *pEnd = (unsigned char*)&pEntry->aRecord[pEntry->szRecord];
unsigned char *pIter;
for(pIter=(unsigned char*)pEntry->aRecord; pIter<pEnd; pIter++){
iHash += (iHash << 7) + *pIter;
}
return (int)(iHash % p->nHash);
}
/*
................................................................................
apNew = cbMalloc(&rc, sizeof(BatchIndexEntry*) * nNew);
if( rc==SQLITE_OK ){
int nHash = p->nHash;
p->nHash = nNew;
for(i=0; i<nHash; i++){
BatchIndexEntry *pEntry;
while( (pEntry=p->apHash[i])!=0 ){
int iHash = cbHash(p, pEntry);
p->apHash[i] = pEntry->pNext;
pEntry->pNext = apNew[iHash];
apNew[iHash] = pEntry;
}
}
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