1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/cache/nsDeleteDir.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,79 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef nsDeleteDir_h__
1.11 +#define nsDeleteDir_h__
1.12 +
1.13 +#include "nsCOMPtr.h"
1.14 +#include "nsCOMArray.h"
1.15 +#include "mozilla/Mutex.h"
1.16 +#include "mozilla/CondVar.h"
1.17 +
1.18 +class nsIFile;
1.19 +class nsIThread;
1.20 +class nsITimer;
1.21 +
1.22 +
1.23 +class nsDeleteDir {
1.24 +public:
1.25 + nsDeleteDir();
1.26 + ~nsDeleteDir();
1.27 +
1.28 + static nsresult Init();
1.29 + static nsresult Shutdown(bool finishDeleting);
1.30 +
1.31 + /**
1.32 + * This routine attempts to delete a directory that may contain some files
1.33 + * that are still in use. This latter point is only an issue on Windows and
1.34 + * a few other systems.
1.35 + *
1.36 + * If the moveToTrash parameter is true we first rename the given directory
1.37 + * "foo.Trash123" (where "foo" is the original directory name, and "123" is
1.38 + * a random number, in order to support multiple concurrent deletes). The
1.39 + * directory is then deleted, file-by-file, on a background thread.
1.40 + *
1.41 + * If the moveToTrash parameter is false, then the given directory is deleted
1.42 + * directly.
1.43 + *
1.44 + * If 'delay' is non-zero, the directory will not be deleted until the
1.45 + * specified number of milliseconds have passed. (The directory is still
1.46 + * renamed immediately if 'moveToTrash' is passed, so upon return it is safe
1.47 + * to create a directory with the same name).
1.48 + */
1.49 + static nsresult DeleteDir(nsIFile *dir, bool moveToTrash, uint32_t delay = 0);
1.50 +
1.51 + /**
1.52 + * Returns the trash directory corresponding to the given directory.
1.53 + */
1.54 + static nsresult GetTrashDir(nsIFile *dir, nsCOMPtr<nsIFile> *result);
1.55 +
1.56 + /**
1.57 + * Remove all trashes left from previous run. This function does nothing when
1.58 + * called second and more times.
1.59 + */
1.60 + static nsresult RemoveOldTrashes(nsIFile *cacheDir);
1.61 +
1.62 + static void TimerCallback(nsITimer *aTimer, void *arg);
1.63 +
1.64 +private:
1.65 + friend class nsBlockOnBackgroundThreadEvent;
1.66 + friend class nsDestroyThreadEvent;
1.67 +
1.68 + nsresult InitThread();
1.69 + void DestroyThread();
1.70 + nsresult PostTimer(void *arg, uint32_t delay);
1.71 + nsresult RemoveDir(nsIFile *file, bool *stopDeleting);
1.72 +
1.73 + static nsDeleteDir * gInstance;
1.74 + mozilla::Mutex mLock;
1.75 + mozilla::CondVar mCondVar;
1.76 + nsCOMArray<nsITimer> mTimers;
1.77 + nsCOMPtr<nsIThread> mThread;
1.78 + bool mShutdownPending;
1.79 + bool mStopDeleting;
1.80 +};
1.81 +
1.82 +#endif // nsDeleteDir_h__
