Data Structures | Typedefs | Functions | Variables
Eio file and directory monitoring API

These function monitor changes in directories and files. More...

Data Structures

struct  _Eio_Monitor_Error
 
struct  _Eio_Monitor_Event
 

Typedefs

typedef struct _Eio_Monitor Eio_Monitor
 
typedef struct _Eio_Monitor_Error Eio_Monitor_Error
 
typedef struct _Eio_Monitor_Event Eio_Monitor_Event
 

Functions

Eio_Monitor * eio_monitor_add (const char *path)
 Adds a file/directory to monitor (inotify mechanism) More...
 
Eio_Monitor * eio_monitor_stringshared_add (const char *path)
 Adds a file/directory to monitor. More...
 
void eio_monitor_del (Eio_Monitor *monitor)
 Deletes a path from the “watched” list. More...
 
const char * eio_monitor_path_get (Eio_Monitor *monitor)
 returns the path being watched by the given Eio_Monitor. More...
 
Eina_Bool eio_monitor_fallback_check (const Eio_Monitor *monitor)
 Check whether a monitor is using the fallback backend. More...
 
Eina_Bool eio_monitor_has_context (const Eio_Monitor *monitor, const char *path)
 Check if a monitor has the context about a file or not. More...
 

Variables

int EIO_MONITOR_FILE_CREATED
 A new file was created in a watched directory.
 
int EIO_MONITOR_FILE_DELETED
 A watched file was deleted, or a file in a watched directory was deleted.
 
int EIO_MONITOR_FILE_MODIFIED
 A file was modified in a watched directory.
 
int EIO_MONITOR_FILE_CLOSED
 A file was closed in a watched directory. More...
 
int EIO_MONITOR_DIRECTORY_CREATED
 A new directory was created in a watched directory.
 
int EIO_MONITOR_DIRECTORY_DELETED
 A directory has been deleted: this can be either a watched directory or one of its subdirectories.
 
int EIO_MONITOR_DIRECTORY_MODIFIED
 A directory has been modified in a watched directory.
 
int EIO_MONITOR_DIRECTORY_CLOSED
 A directory has been closed in a watched directory. More...
 
int EIO_MONITOR_SELF_RENAME
 The monitored path has been renamed, an error could happen just after if the renamed path doesn't exist. More...
 
int EIO_MONITOR_SELF_DELETED
 The monitored path has been removed. More...
 
int EIO_MONITOR_ERROR
 During operation the monitor failed and will no longer work. More...
 

Detailed Description

These function monitor changes in directories and files.

These functions use the best available method to monitor changes on a specified directory or file. They send ecore events when changes occur, and they maintain internal refcounts to reduce resource consumption on duplicate monitor targets.

Function Documentation

◆ eio_monitor_add()

Eio_Monitor* eio_monitor_add ( const char *  path)

Adds a file/directory to monitor (inotify mechanism)

Parameters
pathfile/directory to monitor
Returns
NULL in case of a failure or a pointer to the monitor in case of success.

This function will add the given path to its internal list of files to monitor. It utilizes the inotify mechanism introduced in kernel 2.6.13 for passive monitoring.

References EINA_SAFETY_ON_NULL_RETURN_VAL, eina_stringshare_add(), eina_stringshare_del(), and eio_monitor_stringshared_add().

◆ eio_monitor_stringshared_add()

Eio_Monitor* eio_monitor_stringshared_add ( const char *  path)

Adds a file/directory to monitor.

Parameters
pathfile/directory to monitor
Returns
NULL in case of a failure or a pointer to the monitor in case of success.
Warning
Do NOT pass non-stringshared strings to this function! If you don't know what this means, use eio_monitor_add().

This function is just like eio_monitor_add(), however the string passed by argument must be created using eina_stringshare_add().

References EINA_FALSE, eina_hash_del(), eina_hash_direct_add(), eina_hash_find(), EINA_REFCOUNT_INIT, EINA_REFCOUNT_REF, EINA_SAFETY_ON_NULL_RETURN_VAL, eina_stringshare_del(), eina_stringshare_ref(), EINA_TRUE, ERR, INF, and WRN.

Referenced by eio_monitor_add().

◆ eio_monitor_del()

void eio_monitor_del ( Eio_Monitor *  monitor)

Deletes a path from the “watched” list.

Parameters
monitorThe Eio_Monitor you want to stop watching. It can only be an Eio_Monitor returned to you from calling eio_monitor_add() or eio_monitor_stringshared_add()

References EINA_REFCOUNT_UNREF.

◆ eio_monitor_path_get()

const char* eio_monitor_path_get ( Eio_Monitor *  monitor)

returns the path being watched by the given Eio_Monitor.

Parameters
monitorEio_Monitor to return the path of
Returns
The stringshared path belonging to monitor

References EINA_SAFETY_ON_NULL_RETURN_VAL.

◆ eio_monitor_fallback_check()

Eina_Bool eio_monitor_fallback_check ( const Eio_Monitor *  monitor)

Check whether a monitor is using the fallback backend.

Parameters
monitorThe Eio_Monitor to check
Returns
EINA_TRUE only if the monitor is valid and is using the fallback monitoring mechanism

Fallback monitors are unable to provide the CLOSED or RENAME events. It's important to check whether a monitor is a fallback monitor before relying on these events.

Since
1.21

References EINA_FALSE, and EINA_SAFETY_ON_NULL_RETURN_VAL.

◆ eio_monitor_has_context()

Eina_Bool eio_monitor_has_context ( const Eio_Monitor *  monitor,
const char *  path 
)

Check if a monitor has the context about a file or not.

Parameters
monitorThe Eio_Monitor to check
pathThe path to check
Returns
EINA_TRUE if there is context, EINA_FALSE otherwise.

There are Monitors that need context about a file before they can monitor the file correctly. As an example: If you publish a file in your API before the monitor has this file in his context, and the file gets deleted as a reaction to this, the monitor will not be able to emit the correct DELETE event even if the file is in the monitors path.

In case the monitor does not yet have context, you can be sure that the monitor will bring up an FILE_ADD event about that file.

Since
1.23

Variable Documentation

◆ EIO_MONITOR_FILE_CLOSED

int EIO_MONITOR_FILE_CLOSED

A file was closed in a watched directory.

This event is never sent on Windows and OSX, or for non-fallback monitors

◆ EIO_MONITOR_DIRECTORY_CLOSED

int EIO_MONITOR_DIRECTORY_CLOSED

A directory has been closed in a watched directory.

This event is never sent on Windows and OSX, or for non-fallback monitors

◆ EIO_MONITOR_SELF_RENAME

int EIO_MONITOR_SELF_RENAME

The monitored path has been renamed, an error could happen just after if the renamed path doesn't exist.

This event is never sent on OSX, or for non-fallback monitors

◆ EIO_MONITOR_SELF_DELETED

int EIO_MONITOR_SELF_DELETED

The monitored path has been removed.

This event is never sent on OSX

◆ EIO_MONITOR_ERROR

int EIO_MONITOR_ERROR

During operation the monitor failed and will no longer work.

eio_monitor_del must be called on it.