static bool CheckJournalDocumentCollection (TRI_document_collection_t* doc) {
TRI_collection_t* base;
TRI_datafile_t* journal;
bool worked;
size_t i;
size_t n;
worked = false;
base = &doc->base.base;
if (base->_state != TRI_COL_STATE_WRITE) {
return false;
}
// .............................................................................
// the only thread MODIFYING the _journals variable is this thread,
// therefore no locking is required to access the _journals
// .............................................................................
TRI_LOCK_JOURNAL_ENTRIES_DOC_COLLECTION(doc);
n = base->_journals._length;
for (i = 0; i < n;) {
journal = base->_journals._buffer[i];
if (journal->_full) {
worked = true;
LOG_DEBUG("closing full journal '%s'", journal->getName(journal));
TRI_CloseJournalPrimaryCollection(&doc->base, i);
n = base->_journals._length;
i = 0;
}
else {
++i;
}
}
if (base->_journals._length == 0) {
journal = TRI_CreateJournalDocumentCollection(doc);
if (journal != NULL) {
worked = true;
LOG_DEBUG("created new journal '%s'", journal->getName(journal));
TRI_BROADCAST_JOURNAL_ENTRIES_DOC_COLLECTION(doc);
}
else {
// an error occurred when creating the journal file
LOG_ERROR("could not create journal file");
// we still must wake up the other thread from time to time, otherwise we'll deadlock
TRI_BROADCAST_JOURNAL_ENTRIES_DOC_COLLECTION(doc);
}
}
TRI_UNLOCK_JOURNAL_ENTRIES_DOC_COLLECTION(doc);
return worked;
}
static bool CheckJournalDocumentCollection (TRI_document_collection_t* document) {
TRI_collection_t* base;
TRI_datafile_t* journal;
bool worked;
size_t i;
size_t n;
worked = false;
base = &document->base.base;
if (base->_state != TRI_COL_STATE_WRITE) {
return false;
}
// .............................................................................
// the only thread MODIFYING the _journals variable is this thread,
// therefore no locking is required to access the _journals
// .............................................................................
TRI_LOCK_JOURNAL_ENTRIES_DOC_COLLECTION(document);
n = base->_journals._length;
for (i = 0; i < n;) {
journal = static_cast<TRI_datafile_t*>(base->_journals._buffer[i]);
if (journal->_full) {
worked = true;
LOG_DEBUG("closing full journal '%s'", journal->getName(journal));
TRI_CloseJournalPrimaryCollection(&document->base, i);
n = base->_journals._length;
i = 0;
}
else {
++i;
}
}
// create a new journal if we do not have one, AND, if there was a request to create one
// (sometimes we don't need a journal, e.g. directly after db._create(collection); when
// the collection is still empty)
if (base->_journals._length == 0 &&
document->_requestedJournalSize > 0) {
TRI_voc_size_t targetSize = document->base.base._info._maximalSize;
if (document->_requestedJournalSize > 0 &&
document->_requestedJournalSize > targetSize) {
targetSize = document->_requestedJournalSize;
}
journal = TRI_CreateJournalDocumentCollection(document, targetSize);
if (journal != NULL) {
worked = true;
document->_requestedJournalSize = 0;
document->_rotateRequested = false;
LOG_DEBUG("created new journal '%s'", journal->getName(journal));
}
else {
// an error occurred when creating the journal file
LOG_ERROR("could not create journal file");
}
}
else if (document->_rotateRequested) {
// only a rotate was requested
document->_rotateRequested = false;
}
// always broadcast, otherwise other threads waiting for the broadcast might deadlock!
TRI_BROADCAST_JOURNAL_ENTRIES_DOC_COLLECTION(document);
TRI_UNLOCK_JOURNAL_ENTRIES_DOC_COLLECTION(document);
return worked;
}