Modern Fs FileWatcher Poll

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FileWatcher.Poll

Fills an Array with the changes seen since the last call, waiting up to a timeout.

Syntax

FileWatcher.Poll( changes, [ timeoutMs ] )

Notes

• FsResultLong -- the count

Examples

#import "std/containers"
#import "std/fs"
using fs, containers

dim td as FsResultUStr = CreateTempDir( "fbdoc" )
dim as ustring dir_ = td.Value( )
dim as ustring p = PathJoin( dir_, "f.txt" )
WriteAllText( p, "hello" )

dim w as FileWatcher
w.Start( dir_ )

WriteAllText( PathJoin( dir_, "new.txt" ), "x" )

'' Collects the changes seen so far. The timeout is in milliseconds;
'' 0 returns immediately with whatever is queued.
dim changes as Array( of FsChange )
dim r as FsResultLong = w.Poll( changes, 500 )

print r.IsOk( )              '' true
print r.Value( ) >= 0        '' -1 (true) -- how many changes came back

w.Stop( )

RemoveDirAll( dir_ )

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Library: Filesystem Library
Category: Filesystem
Documented under: Locking, Mapping And Watching