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Optional force scan for DirectoryWatcher #853

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unknown
2015-06-03 14:55:05 -05:00
parent 5b80826437
commit 1c26b58452
2 changed files with 41 additions and 20 deletions
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29
Foundation/include/Poco/DirectoryWatcher.h
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@@ -63,6 +63,8 @@ class Foundation_API DirectoryWatcher: protected Runnable
/// Therefore, the interval in which scans are done can be specified in
/// the constructor. Note that periodic scanning will also be done on FreeBSD
/// and Darwin if events for changes to files (DW_ITEM_MODIFIED) are enabled.
/// To avoid problems (e.g. with network shares notifications), scanning
/// can be forced as the only mechanism, regardless of platform default.
///
/// DW_ITEM_MOVED_FROM and DW_ITEM_MOVED_TO events will only be reported
/// on Linux. On other platforms, a file rename or move operation
@@ -134,21 +136,29 @@ public:
BasicEvent<const Exception> scanError;
/// Fired when an error occurs while scanning for changes.
DirectoryWatcher(const std::string& path, int eventMask = DW_FILTER_ENABLE_ALL, int scanInterval = DW_DEFAULT_SCAN_INTERVAL);
DirectoryWatcher(const std::string& path,
int eventMask = DW_FILTER_ENABLE_ALL,
int scanInterval = DW_DEFAULT_SCAN_INTERVAL,
bool forceScan = false);
/// Creates a DirectoryWatcher for the directory given in path.
/// To enable only specific events, an eventMask can be specified by
/// OR-ing the desired event IDs (e.g., DW_ITEM_ADDED | DW_ITEM_MODIFIED).
/// On platforms where no native filesystem notifications are available,
/// scanInterval specifies the interval in seconds between scans
/// of the directory.
/// of the directory. Native notification mechanism can also be disabled
/// (i.e. replaced with scanning) by setting forceScan to true.
DirectoryWatcher(const File& directory, int eventMask = DW_FILTER_ENABLE_ALL, int scanInterval = DW_DEFAULT_SCAN_INTERVAL);
DirectoryWatcher(const File& directory,
int eventMask = DW_FILTER_ENABLE_ALL,
int scanInterval = DW_DEFAULT_SCAN_INTERVAL,
bool forceScan = false);
/// Creates a DirectoryWatcher for the specified directory
/// To enable only specific events, an eventMask can be specified by
/// OR-ing the desired event IDs (e.g., DW_ITEM_ADDED | DW_ITEM_MODIFIED).
/// On platforms where no native filesystem notifications are available,
/// scanInterval specifies the interval in seconds between scans
/// of the directory.
/// of the directory. Native notification mechanism can also be disabled
/// (i.e. replaced with scanning) by setting forceScan to true.
~DirectoryWatcher();
/// Destroys the DirectoryWatcher.
@@ -186,11 +196,12 @@ private:
DirectoryWatcher(const DirectoryWatcher&);
DirectoryWatcher& operator = (const DirectoryWatcher&);
Thread _thread;
File _directory;
int _eventMask;
AtomicCounter _eventsSuspended;
int _scanInterval;
Thread _thread;
File _directory;
int _eventMask;
AtomicCounter _eventsSuspended;
int _scanInterval;
bool _forceScan;
DirectoryWatcherStrategy* _pStrategy;
};