void LocalStorageDatabase::importItems(StorageMap& storageMap)
{
// FIXME: If it can't import, then the default WebKit behavior should be that of private browsing,
// not silently ignoring it. https://bugs.webkit.org/show_bug.cgi?id=25894
openDatabase(SkipIfNonExistent);
if (!m_database.isOpen())
return;
SQLiteStatement query(m_database, "SELECT key, value FROM ItemTable");
if (query.prepare() != SQLResultOk) {
LOG_ERROR("Unable to select items from ItemTable for local storage");
return;
}
HashMap<String, String> items;
int result = query.step();
while (result == SQLResultRow) {
items.set(query.getColumnText(0), query.getColumnBlobAsString(1));
result = query.step();
}
if (result != SQLResultDone) {
LOG_ERROR("Error reading items from ItemTable for local storage");
return;
}
storageMap.importItems(items);
}
void ClearManager::onStart() {
while (true) {
int task = 0;
bool result = false;
StorageMap images;
{
QMutexLocker lock(&data->mutex);
if (data->tasks.isEmpty()) {
data->working = false;
break;
}
task = data->tasks.at(0);
images = data->images;
}
switch (task) {
case ClearManagerAll:
result = (QDir(cTempDir()).removeRecursively() && QDir(_basePath).removeRecursively());
break;
case ClearManagerDownloads:
result = QDir(cTempDir()).removeRecursively();
break;
case ClearManagerImages:
for (StorageMap::const_iterator i = images.cbegin(), e = images.cend(); i != e; ++i) {
clearKey(i.value().first, false);
}
result = true;
break;
}
{
QMutexLocker lock(&data->mutex);
if (data->tasks.at(0) == task) {
data->tasks.pop_front();
if (data->tasks.isEmpty()) {
data->working = false;
}
}
if (result) {
emit succeed(task, data->working ? 0 : this);
} else {
emit failed(task, data->working ? 0 : this);
}
if (!data->working) break;
}
}
}
/// Use the summary analysis to check whether a call to the given
/// function would conflict with any in progress accesses. The starting
/// index indicates what index into the the callee's parameters the
/// arguments array starts at -- this is useful for partial_apply functions,
/// which pass only a suffix of the callee's arguments at the apply site.
static void checkForViolationWithCall(
const StorageMap &Accesses, SILFunction *Callee, unsigned StartingAtIndex,
OperandValueArrayRef Arguments, AccessSummaryAnalysis *ASA,
llvm::SmallVectorImpl<ConflictingAccess> &ConflictingAccesses) {
const AccessSummaryAnalysis::FunctionSummary &FS =
ASA->getOrCreateSummary(Callee);
// For each argument in the suffix of the callee arguments being passed
// at this call site, determine whether the arguments will be accessed
// in a way that conflicts with any currently in progress accesses.
// If so, diagnose.
for (unsigned ArgumentIndex : indices(Arguments)) {
unsigned CalleeIndex = StartingAtIndex + ArgumentIndex;
const AccessSummaryAnalysis::ArgumentSummary &AS =
FS.getAccessForArgument(CalleeIndex);
const auto &SubAccesses = AS.getSubAccesses();
// Is the capture accessed in the callee?
if (SubAccesses.size() == 0)
continue;
SILValue Argument = Arguments[ArgumentIndex];
assert(Argument->getType().isAddress());
const AccessedStorage &Storage = findAccessedStorage(Argument);
auto AccessIt = Accesses.find(Storage);
// Are there any accesses in progress at the time of the call?
if (AccessIt == Accesses.end())
continue;
const AccessInfo &Info = AccessIt->getSecond();
if (auto Conflict = findConflictingArgumentAccess(AS, Storage, Info)) {
ConflictingAccesses.push_back(*Conflict);
}
}
}
void LocalStorageDatabase::importItems(StorageMap& storageMap)
{
if (m_didImportItems)
return;
// FIXME: If it can't import, then the default WebKit behavior should be that of private browsing,
// not silently ignoring it. https://bugs.webkit.org/show_bug.cgi?id=25894
// We set this to true even if we don't end up importing any items due to failure because
// there's really no good way to recover other than not importing anything.
m_didImportItems = true;
openDatabase(SkipIfNonExistent);
if (!m_database.isOpen())
return;
SQLiteStatement query(m_database, "SELECT key, value FROM ItemTable");
if (query.prepare() != SQLITE_OK) {
LOG_ERROR("Unable to select items from ItemTable for local storage");
return;
}
HashMap<String, String> items;
int result = query.step();
while (result == SQLITE_ROW) {
String key = query.getColumnText(0);
String value = query.getColumnBlobAsString(1);
if (!key.isNull() && !value.isNull())
items.set(key, value);
result = query.step();
}
if (result != SQLITE_DONE) {
LOG_ERROR("Error reading items from ItemTable for local storage");
return;
}
storageMap.importItems(items);
}
