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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 "FileDescriptorUtils.h"
#include "nsIEventTarget.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsNetCID.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "prio.h"
#include "private/pprio.h"
using mozilla::ipc::CloseFileRunnable;
#ifdef DEBUG
CloseFileRunnable::CloseFileRunnable(const FileDescriptor& aFileDescriptor)
: mFileDescriptor(aFileDescriptor)
{
MOZ_ASSERT(aFileDescriptor.IsValid());
}
#endif // DEBUG
CloseFileRunnable::~CloseFileRunnable()
{
if (mFileDescriptor.IsValid()) {
// It's probably safer to take the main thread IO hit here rather than leak
// the file descriptor.
CloseFile();
}
}
NS_IMPL_ISUPPORTS(CloseFileRunnable, nsIRunnable)
void
CloseFileRunnable::Dispatch()
{
nsCOMPtr<nsIEventTarget> eventTarget =
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
NS_ENSURE_TRUE_VOID(eventTarget);
nsresult rv = eventTarget->Dispatch(this, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS_VOID(rv);
}
void
CloseFileRunnable::CloseFile()
{
// It's possible for this to happen on the main thread if the dispatch to the
// stream service fails so we can't assert the thread on which we're running.
MOZ_ASSERT(mFileDescriptor.IsValid());
PRFileDesc* fd =
PR_ImportFile(PROsfd(mFileDescriptor.PlatformHandle()));
NS_WARN_IF_FALSE(fd, "Failed to import file handle!");
mFileDescriptor = FileDescriptor();
if (fd) {
PR_Close(fd);
fd = nullptr;
}
}
NS_IMETHODIMP
CloseFileRunnable::Run()
{
MOZ_ASSERT(!NS_IsMainThread());
CloseFile();
return NS_OK;
}
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