1 files changed, 79 insertions, 0 deletions
diff --git a/netwerk/cache/nsDeleteDir.h b/netwerk/cache/nsDeleteDir.h
new file mode 100644
index 0000000000..cf6de26dde
--- /dev/null
+++ b/netwerk/cache/nsDeleteDir.h
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#ifndef nsDeleteDir_h__
+#define nsDeleteDir_h__
+
+#include "nsCOMPtr.h"
+#include "nsCOMArray.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/CondVar.h"
+
+class nsIFile;
+class nsISerialEventTarget;
+class nsITimer;
+
+class nsDeleteDir {
+ public:
+  nsDeleteDir();
+  ~nsDeleteDir();
+
+  static nsresult Init();
+  static nsresult Shutdown(bool finishDeleting);
+
+  /**
+   * This routine attempts to delete a directory that may contain some files
+   * that are still in use. This latter point is only an issue on Windows and
+   * a few other systems.
+   *
+   * If the moveToTrash parameter is true we first rename the given directory
+   * "foo.Trash123" (where "foo" is the original directory name, and "123" is
+   * a random number, in order to support multiple concurrent deletes). The
+   * directory is then deleted, file-by-file, on a background thread.
+   *
+   * If the moveToTrash parameter is false, then the given directory is deleted
+   * directly.
+   *
+   * If 'delay' is non-zero, the directory will not be deleted until the
+   * specified number of milliseconds have passed. (The directory is still
+   * renamed immediately if 'moveToTrash' is passed, so upon return it is safe
+   * to create a directory with the same name).
+   */
+  static nsresult DeleteDir(nsIFile* dir, bool moveToTrash, uint32_t delay = 0);
+
+  /**
+   * Returns the trash directory corresponding to the given directory.
+   */
+  static nsresult GetTrashDir(nsIFile* dir, nsCOMPtr<nsIFile>* result);
+
+  /**
+   * Remove all trashes left from previous run. This function does nothing when
+   * called second and more times.
+   */
+  static nsresult RemoveOldTrashes(nsIFile* cacheDir);
+
+  static void TimerCallback(nsITimer* aTimer, void* arg);
+
+ private:
+  friend class nsBlockOnBackgroundThreadEvent;
+  friend class nsDestroyThreadEvent;
+
+  nsresult InitThread();
+  void DestroyThread();
+  nsresult PostTimer(void* arg, uint32_t delay);
+  nsresult RemoveDir(nsIFile* file, bool* stopDeleting);
+
+  static nsDeleteDir* gInstance;
+  mozilla::Mutex mLock;
+  mozilla::CondVar mCondVar;
+  bool mNotified;
+  nsCOMArray<nsITimer> mTimers;
+  nsCOMPtr<nsISerialEventTarget> mBackgroundET;
+  bool mShutdownPending;
+  bool mStopDeleting;
+};
+
+#endif  // nsDeleteDir_h__