mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
396 lines
9.6 KiB
C++
396 lines
9.6 KiB
C++
/* 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 "CacheFileOutputStream.h"
|
|
|
|
#include "CacheFile.h"
|
|
#include "CacheEntry.h"
|
|
#include "nsStreamUtils.h"
|
|
#include "nsThreadUtils.h"
|
|
#include "mozilla/DebugOnly.h"
|
|
#include <algorithm>
|
|
|
|
namespace mozilla {
|
|
namespace net {
|
|
|
|
NS_IMPL_ADDREF(CacheFileOutputStream)
|
|
NS_IMETHODIMP_(nsrefcnt)
|
|
CacheFileOutputStream::Release()
|
|
{
|
|
NS_PRECONDITION(0 != mRefCnt, "dup release");
|
|
nsrefcnt count = --mRefCnt;
|
|
NS_LOG_RELEASE(this, count, "CacheFileOutputStream");
|
|
|
|
if (0 == count) {
|
|
mRefCnt = 1;
|
|
{
|
|
CacheFileAutoLock lock(mFile);
|
|
mFile->RemoveOutput(this);
|
|
}
|
|
delete (this);
|
|
return 0;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
NS_INTERFACE_MAP_BEGIN(CacheFileOutputStream)
|
|
NS_INTERFACE_MAP_ENTRY(nsIOutputStream)
|
|
NS_INTERFACE_MAP_ENTRY(nsIAsyncOutputStream)
|
|
NS_INTERFACE_MAP_ENTRY(nsISeekableStream)
|
|
NS_INTERFACE_MAP_ENTRY(mozilla::net::CacheFileChunkListener)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIOutputStream)
|
|
NS_INTERFACE_MAP_END_THREADSAFE
|
|
|
|
CacheFileOutputStream::CacheFileOutputStream(CacheFile *aFile,
|
|
CacheOutputCloseListener *aCloseListener)
|
|
: mFile(aFile)
|
|
, mCloseListener(aCloseListener)
|
|
, mPos(0)
|
|
, mClosed(false)
|
|
, mStatus(NS_OK)
|
|
, mCallbackFlags(0)
|
|
{
|
|
LOG(("CacheFileOutputStream::CacheFileOutputStream() [this=%p]", this));
|
|
MOZ_COUNT_CTOR(CacheFileOutputStream);
|
|
}
|
|
|
|
CacheFileOutputStream::~CacheFileOutputStream()
|
|
{
|
|
LOG(("CacheFileOutputStream::~CacheFileOutputStream() [this=%p]", this));
|
|
MOZ_COUNT_DTOR(CacheFileOutputStream);
|
|
}
|
|
|
|
// nsIOutputStream
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::Close()
|
|
{
|
|
LOG(("CacheFileOutputStream::Close() [this=%p]", this));
|
|
return CloseWithStatus(NS_OK);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::Flush()
|
|
{
|
|
// TODO do we need to implement flush ???
|
|
LOG(("CacheFileOutputStream::Flush() [this=%p]", this));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::Write(const char * aBuf, uint32_t aCount,
|
|
uint32_t *_retval)
|
|
{
|
|
CacheFileAutoLock lock(mFile);
|
|
|
|
LOG(("CacheFileOutputStream::Write() [this=%p, count=%d]", this, aCount));
|
|
|
|
if (mClosed) {
|
|
LOG(("CacheFileOutputStream::Write() - Stream is closed. [this=%p, "
|
|
"status=0x%08x]", this, mStatus));
|
|
|
|
return NS_FAILED(mStatus) ? mStatus : NS_BASE_STREAM_CLOSED;
|
|
}
|
|
|
|
*_retval = aCount;
|
|
|
|
while (aCount) {
|
|
EnsureCorrectChunk(false);
|
|
|
|
FillHole();
|
|
|
|
uint32_t chunkOffset = mPos - (mPos / kChunkSize) * kChunkSize;
|
|
uint32_t canWrite = kChunkSize - chunkOffset;
|
|
uint32_t thisWrite = std::min(static_cast<uint32_t>(canWrite), aCount);
|
|
mChunk->EnsureBufSize(chunkOffset + thisWrite);
|
|
memcpy(mChunk->BufForWriting() + chunkOffset, aBuf, thisWrite);
|
|
|
|
mPos += thisWrite;
|
|
aBuf += thisWrite;
|
|
aCount -= thisWrite;
|
|
|
|
mChunk->UpdateDataSize(chunkOffset, thisWrite, false);
|
|
}
|
|
|
|
EnsureCorrectChunk(true);
|
|
|
|
LOG(("CacheFileOutputStream::Write() - Wrote %d bytes [this=%p]",
|
|
*_retval, this));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::WriteFrom(nsIInputStream *aFromStream, uint32_t aCount,
|
|
uint32_t *_retval)
|
|
{
|
|
LOG(("CacheFileOutputStream::WriteFrom() - NOT_IMPLEMENTED [this=%p, from=%p"
|
|
", count=%d]", this, aFromStream, aCount));
|
|
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::WriteSegments(nsReadSegmentFun aReader, void *aClosure,
|
|
uint32_t aCount, uint32_t *_retval)
|
|
{
|
|
LOG(("CacheFileOutputStream::WriteSegments() - NOT_IMPLEMENTED [this=%p, "
|
|
"count=%d]", this, aCount));
|
|
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::IsNonBlocking(bool *_retval)
|
|
{
|
|
*_retval = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIAsyncOutputStream
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::CloseWithStatus(nsresult aStatus)
|
|
{
|
|
CacheFileAutoLock lock(mFile);
|
|
|
|
LOG(("CacheFileOutputStream::CloseWithStatus() [this=%p, aStatus=0x%08x]",
|
|
this, aStatus));
|
|
|
|
if (mClosed) {
|
|
MOZ_ASSERT(!mCallback);
|
|
return NS_OK;
|
|
}
|
|
|
|
mClosed = true;
|
|
mStatus = NS_FAILED(aStatus) ? aStatus : NS_BASE_STREAM_CLOSED;
|
|
|
|
if (mChunk)
|
|
ReleaseChunk();
|
|
|
|
if (mCallback)
|
|
NotifyListener();
|
|
|
|
mFile->RemoveOutput(this);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::AsyncWait(nsIOutputStreamCallback *aCallback,
|
|
uint32_t aFlags,
|
|
uint32_t aRequestedCount,
|
|
nsIEventTarget *aEventTarget)
|
|
{
|
|
CacheFileAutoLock lock(mFile);
|
|
|
|
LOG(("CacheFileOutputStream::AsyncWait() [this=%p, callback=%p, flags=%d, "
|
|
"requestedCount=%d, eventTarget=%p]", this, aCallback, aFlags,
|
|
aRequestedCount, aEventTarget));
|
|
|
|
mCallback = aCallback;
|
|
mCallbackFlags = aFlags;
|
|
|
|
if (!mCallback)
|
|
return NS_OK;
|
|
|
|
// The stream is blocking so it is writable at any time
|
|
if (mClosed || !(aFlags & WAIT_CLOSURE_ONLY))
|
|
NotifyListener();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsISeekableStream
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::Seek(int32_t whence, int64_t offset)
|
|
{
|
|
CacheFileAutoLock lock(mFile);
|
|
|
|
LOG(("CacheFileOutputStream::Seek() [this=%p, whence=%d, offset=%lld]",
|
|
this, whence, offset));
|
|
|
|
if (mClosed) {
|
|
LOG(("CacheFileOutputStream::Seek() - Stream is closed. [this=%p]", this));
|
|
return NS_BASE_STREAM_CLOSED;
|
|
}
|
|
|
|
int64_t newPos = offset;
|
|
switch (whence) {
|
|
case NS_SEEK_SET:
|
|
break;
|
|
case NS_SEEK_CUR:
|
|
newPos += mPos;
|
|
break;
|
|
case NS_SEEK_END:
|
|
newPos += mFile->mDataSize;
|
|
break;
|
|
default:
|
|
NS_ERROR("invalid whence");
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
mPos = newPos;
|
|
EnsureCorrectChunk(true);
|
|
|
|
LOG(("CacheFileOutputStream::Seek() [this=%p, pos=%lld]", this, mPos));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::Tell(int64_t *_retval)
|
|
{
|
|
CacheFileAutoLock lock(mFile);
|
|
|
|
if (mClosed) {
|
|
LOG(("CacheFileOutputStream::Tell() - Stream is closed. [this=%p]", this));
|
|
return NS_BASE_STREAM_CLOSED;
|
|
}
|
|
|
|
*_retval = mPos;
|
|
|
|
LOG(("CacheFileOutputStream::Tell() [this=%p, retval=%lld]", this, *_retval));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
CacheFileOutputStream::SetEOF()
|
|
{
|
|
MOZ_ASSERT(false, "CacheFileOutputStream::SetEOF() not implemented");
|
|
// Right now we don't use SetEOF(). If we ever need this method, we need
|
|
// to think about what to do with input streams that already points beyond
|
|
// new EOF.
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
// CacheFileChunkListener
|
|
nsresult
|
|
CacheFileOutputStream::OnChunkRead(nsresult aResult, CacheFileChunk *aChunk)
|
|
{
|
|
MOZ_CRASH("CacheFileOutputStream::OnChunkRead should not be called!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileOutputStream::OnChunkWritten(nsresult aResult, CacheFileChunk *aChunk)
|
|
{
|
|
MOZ_CRASH(
|
|
"CacheFileOutputStream::OnChunkWritten should not be called!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileOutputStream::OnChunkAvailable(nsresult aResult,
|
|
uint32_t aChunkIdx,
|
|
CacheFileChunk *aChunk)
|
|
{
|
|
MOZ_CRASH(
|
|
"CacheFileOutputStream::OnChunkAvailable should not be called!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsresult
|
|
CacheFileOutputStream::OnChunkUpdated(CacheFileChunk *aChunk)
|
|
{
|
|
MOZ_CRASH(
|
|
"CacheFileOutputStream::OnChunkUpdated should not be called!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
void CacheFileOutputStream::NotifyCloseListener()
|
|
{
|
|
nsRefPtr<CacheOutputCloseListener> listener;
|
|
listener.swap(mCloseListener);
|
|
if (!listener)
|
|
return;
|
|
|
|
listener->OnOutputClosed();
|
|
}
|
|
|
|
void
|
|
CacheFileOutputStream::ReleaseChunk()
|
|
{
|
|
LOG(("CacheFileOutputStream::ReleaseChunk() [this=%p, idx=%d]",
|
|
this, mChunk->Index()));
|
|
|
|
mFile->ReleaseOutsideLock(mChunk.forget().get());
|
|
}
|
|
|
|
void
|
|
CacheFileOutputStream::EnsureCorrectChunk(bool aReleaseOnly)
|
|
{
|
|
mFile->AssertOwnsLock();
|
|
|
|
LOG(("CacheFileOutputStream::EnsureCorrectChunk() [this=%p, releaseOnly=%d]",
|
|
this, aReleaseOnly));
|
|
|
|
uint32_t chunkIdx = mPos / kChunkSize;
|
|
|
|
if (mChunk) {
|
|
if (mChunk->Index() == chunkIdx) {
|
|
// we have a correct chunk
|
|
LOG(("CacheFileOutputStream::EnsureCorrectChunk() - Have correct chunk "
|
|
"[this=%p, idx=%d]", this, chunkIdx));
|
|
|
|
return;
|
|
}
|
|
else {
|
|
ReleaseChunk();
|
|
}
|
|
}
|
|
|
|
if (aReleaseOnly)
|
|
return;
|
|
|
|
DebugOnly<nsresult> rv;
|
|
rv = mFile->GetChunkLocked(chunkIdx, true, nullptr, getter_AddRefs(mChunk));
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv),
|
|
"CacheFile::GetChunkLocked() should always succeed for writer");
|
|
}
|
|
|
|
void
|
|
CacheFileOutputStream::FillHole()
|
|
{
|
|
mFile->AssertOwnsLock();
|
|
|
|
MOZ_ASSERT(mChunk);
|
|
MOZ_ASSERT(mPos / kChunkSize == mChunk->Index());
|
|
|
|
uint32_t pos = mPos - (mPos / kChunkSize) * kChunkSize;
|
|
if (mChunk->DataSize() >= pos)
|
|
return;
|
|
|
|
LOG(("CacheFileOutputStream::FillHole() - Zeroing hole in chunk %d, range "
|
|
"%d-%d [this=%p]", mChunk->Index(), mChunk->DataSize(), pos - 1, this));
|
|
|
|
mChunk->EnsureBufSize(pos);
|
|
memset(mChunk->BufForWriting() + mChunk->DataSize(), 0,
|
|
pos - mChunk->DataSize());
|
|
|
|
mChunk->UpdateDataSize(mChunk->DataSize(), pos - mChunk->DataSize(), false);
|
|
}
|
|
|
|
void
|
|
CacheFileOutputStream::NotifyListener()
|
|
{
|
|
mFile->AssertOwnsLock();
|
|
|
|
LOG(("CacheFileOutputStream::NotifyListener() [this=%p]", this));
|
|
|
|
MOZ_ASSERT(mCallback);
|
|
|
|
if (!mCallbackTarget)
|
|
mCallbackTarget = NS_GetCurrentThread();
|
|
|
|
nsCOMPtr<nsIOutputStreamCallback> asyncCallback =
|
|
NS_NewOutputStreamReadyEvent(mCallback, mCallbackTarget);
|
|
|
|
mCallback = nullptr;
|
|
mCallbackTarget = nullptr;
|
|
|
|
asyncCallback->OnOutputStreamReady(this);
|
|
}
|
|
|
|
} // net
|
|
} // mozilla
|