Class Filesystem.Monitor.basic

Inheritance graph

Description

Basic filesystem monitor.

This module is intended to be used for incremental scanning of a filesystem.

Supports FSEvents on MacOS X and Inotify on Linux to provide low overhead monitoring; other systems use a less efficient polling approach.

Constant default_file_interval_factor

protected constant int Filesystem.Monitor.basic.default_file_interval_factor

Description

The default factor to multiply default_max_dir_check_interval with to get the maximum number of seconds between checks of files.

The value can be changed by calling create().

The value can be overridden for individual files or directories by calling monitor().

Overload this constant to change the default.

Constant default_max_dir_check_interval

protected constant int Filesystem.Monitor.basic.default_max_dir_check_interval

Description

The default maximum number of seconds between checks of directories in seconds.

This value is multiplied with default_file_interval_factor to get the corresponding default maximum number of seconds for files.

The value can be changed by calling create().

The value can be overridden for individual files or directories by calling monitor().

Overload this constant to change the default.

Constant default_stable_time: protected constant int Filesystem.Monitor.basic.default_stable_time
Description: The default minimum number of seconds without changes for a change to be regarded as stable (see stable_data_change().

Variable backend

protected Pike.Backend Filesystem.Monitor.basic.backend

Description

Backend to use.

If 0 (zero) - use the default backend.

Variable co_id: protected mixed Filesystem.Monitor.basic.co_id
Description: Call-out identifier for backend_check() if in nonblocking mode.
See also: set_nonblocking(), set_blocking()

Variable monitor_mutex: protected Thread.Mutex Filesystem.Monitor.basic.monitor_mutex
Description: Mutex controlling access to monitor_queue.

Variable monitor_queue

protected ADT.Heap(< Monitor >) Filesystem.Monitor.basic.monitor_queue

Description

Heap containing active Monitors that need polling.

The heap is sorted on Monitor()->next_poll.

Variable monitors

protected mapping(string:Monitor) Filesystem.Monitor.basic.monitors

Description

Mapping from monitored path to corresponding Monitor.

The paths are normalized to canonic_path(path),

Note

All filesystems are handled as if case-sensitive. This should not be a problem for case-insensitive filesystems as long as case is maintained.

Method create: Filesystem.Monitor.basic Filesystem.Monitor.basic(int|void max_dir_check_interval, int|void file_interval_factor, int|void stable_time)
Description: Create a new monitor.
Parameter max_dir_check_interval: Override of default_max_dir_check_interval.
Parameter file_interval_factor: Override of default_file_interval_factor.
Parameter stable_time: Override of default_stable_time.