Move remaining OS dependent bits from the main logic on the disk cache.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@819 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 59 insertions, 0 deletions

diff --git a/net/disk_cache/cache_util.h b/net/disk_cache/cache_util.h
new file mode 100644
index 0000000..f6815c9
--- /dev/null
+++ b/net/disk_cache/cache_util.h
@@ -0,0 +1,59 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef NET_DISK_CACHE_CACHE_UTIL_H_
+#define NET_DISK_CACHE_CACHE_UTIL_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+namespace disk_cache {
+
+// Returns the available disk space on the volume that contains |path|, or -1
+// on failure.
+int64 GetFreeDiskSpace(const std::wstring& path);
+
+// Returns the total physical memory on the system, or -1 on failure.
+int64 GetSystemMemory();
+
+// Moves the cache files from the given path to another location.
+// Returns true if successful, false otherwise.
+bool MoveCache(const std::wstring& from_path, const std::wstring& to_path);
+
+// Deletes the cache files stored on |path|, and optionally also attempts to
+// delete the folder itself.
+void DeleteCache(const std::wstring& path, bool remove_folder);
+
+// Blocks until |num_pending_io| IO operations complete.
+void WaitForPendingIO(int num_pending_io);
+
+}  // namespace disk_cache
+
+#endif  // NET_DISK_CACHE_CACHE_UTIL_H_