static int ApplyCap (TRI_cap_constraint_t* cap,
TRI_document_collection_t* document,
TRI_transaction_collection_t* trxCollection) {
TRI_headers_t* headers = document->_headersPtr; // PROTECTED by trx in trxCollection
size_t currentCount = headers->count();
int64_t currentSize = headers->size();
int res = TRI_ERROR_NO_ERROR;
// delete while at least one of the constraints is still violated
while ((cap->_count > 0 && currentCount > cap->_count) ||
(cap->_size > 0 && currentSize > cap->_size)) {
TRI_doc_mptr_t* oldest = headers->front();
if (oldest != nullptr) {
TRI_ASSERT(oldest->getDataPtr() != nullptr); // ONLY IN INDEX, PROTECTED by RUNTIME
size_t oldSize = ((TRI_df_marker_t*) (oldest->getDataPtr()))->_size; // ONLY IN INDEX, PROTECTED by RUNTIME
TRI_ASSERT(oldSize > 0);
if (trxCollection != nullptr) {
res = TRI_DeleteDocumentDocumentCollection(trxCollection, nullptr, oldest);
if (res != TRI_ERROR_NO_ERROR) {
LOG_WARNING("cannot cap collection: %s", TRI_errno_string(res));
break;
}
}
else {
headers->unlink(oldest);
}
currentCount--;
currentSize -= (int64_t) oldSize;
}
else {
// we should not get here
LOG_WARNING("logic error in %s", __FUNCTION__);
break;
}
}
return res;
}
static int ApplyCap (TRI_cap_constraint_t* cap,
TRI_primary_collection_t* primary,
TRI_transaction_collection_t* trxCollection) {
TRI_document_collection_t* document;
TRI_headers_t* headers;
size_t count;
int res;
document = (TRI_document_collection_t*) primary;
headers = document->_headers;
count = headers->count(headers);
res = TRI_ERROR_NO_ERROR;
while (count > cap->_size) {
TRI_doc_mptr_t* oldest = headers->front(headers);
if (oldest != NULL) {
if (trxCollection != NULL) {
res = TRI_DeleteDocumentDocumentCollection(trxCollection, NULL, oldest);
if (res != TRI_ERROR_NO_ERROR) {
LOG_WARNING("cannot cap collection: %s", TRI_errno_string(res));
break;
}
}
else {
headers->unlink(headers, oldest);
}
count--;
}
else {
// we should not get here
LOG_WARNING("logic error in %s", __FUNCTION__);
break;
}
}
return res;
}