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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CacheLog.h"
#include "CacheIndexIterator.h"
#include "CacheIndex.h"
#include "nsString.h"
#include "mozilla/DebugOnly.h"
namespace mozilla::net {
CacheIndexIterator::CacheIndexIterator(CacheIndex* aIndex, bool aAddNew)
: mStatus(NS_OK), mIndex(aIndex), mAddNew(aAddNew) {
LOG(("CacheIndexIterator::CacheIndexIterator() [this=%p]", this));
}
CacheIndexIterator::~CacheIndexIterator() {
LOG(("CacheIndexIterator::~CacheIndexIterator() [this=%p]", this));
StaticMutexAutoLock lock(CacheIndex::sLock);
ClearRecords(lock);
CloseInternal(NS_ERROR_NOT_AVAILABLE);
}
nsresult CacheIndexIterator::GetNextHash(SHA1Sum::Hash* aHash) {
LOG(("CacheIndexIterator::GetNextHash() [this=%p]", this));
StaticMutexAutoLock lock(CacheIndex::sLock);
if (NS_FAILED(mStatus)) {
return mStatus;
}
if (!mRecords.Length()) {
CloseInternal(NS_ERROR_NOT_AVAILABLE);
return mStatus;
}
memcpy(aHash, mRecords.PopLastElement()->Get()->mHash, sizeof(SHA1Sum::Hash));
return NS_OK;
}
nsresult CacheIndexIterator::Close() {
LOG(("CacheIndexIterator::Close() [this=%p]", this));
StaticMutexAutoLock lock(CacheIndex::sLock);
return CloseInternal(NS_ERROR_NOT_AVAILABLE);
}
nsresult CacheIndexIterator::CloseInternal(nsresult aStatus) {
LOG(("CacheIndexIterator::CloseInternal() [this=%p, status=0x%08" PRIx32 "]",
this, static_cast<uint32_t>(aStatus)));
// Make sure status will be a failure
MOZ_ASSERT(NS_FAILED(aStatus));
if (NS_SUCCEEDED(aStatus)) {
aStatus = NS_ERROR_UNEXPECTED;
}
if (NS_FAILED(mStatus)) {
return NS_ERROR_NOT_AVAILABLE;
}
CacheIndex::sLock.AssertCurrentThreadOwns();
DebugOnly<bool> removed = mIndex->mIterators.RemoveElement(this);
MOZ_ASSERT(removed);
mStatus = aStatus;
return NS_OK;
}
void CacheIndexIterator::ClearRecords(const StaticMutexAutoLock& aProofOfLock) {
mRecords.Clear();
}
void CacheIndexIterator::AddRecord(CacheIndexRecordWrapper* aRecord,
const StaticMutexAutoLock& aProofOfLock) {
LOG(("CacheIndexIterator::AddRecord() [this=%p, record=%p]", this, aRecord));
mRecords.AppendElement(aRecord);
}
bool CacheIndexIterator::RemoveRecord(CacheIndexRecordWrapper* aRecord,
const StaticMutexAutoLock& aProofOfLock) {
LOG(("CacheIndexIterator::RemoveRecord() [this=%p, record=%p]", this,
aRecord));
return mRecords.RemoveElement(aRecord);
}
bool CacheIndexIterator::ReplaceRecord(
CacheIndexRecordWrapper* aOldRecord, CacheIndexRecordWrapper* aNewRecord,
const StaticMutexAutoLock& aProofOfLock) {
LOG(
("CacheIndexIterator::ReplaceRecord() [this=%p, oldRecord=%p, "
"newRecord=%p]",
this, aOldRecord, aNewRecord));
if (RemoveRecord(aOldRecord, aProofOfLock)) {
AddRecord(aNewRecord, aProofOfLock);
return true;
}
return false;
}
} // namespace mozilla::net
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