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Tries to lock the mutex.

Component Version macOS Windows Linux Server iOS SDK
Mutex 10.2 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "Mutex.TryLock"; Mutex )   More


Parameter Description Example
Mutex The reference number of the mutex. $mutex


Returns 1, 0 or error.


Tries to lock the mutex.
If the mutex is locked, this function returns 0, otherwise it returns 1 or an error.
Please call Mutex.Unlock later to unlock the mutex.


Try lock and unlock:

# lock it
Set Variable [ $r ; Value: MBS( "Mutex.TryLock"; $Mutex ) ]
If [ $r = 1 ]
    # do something
    # finally unlock
    Set Variable [ $r ; Value: MBS( "Mutex.Unlock"; $Mutex ) ]
End If

See also

Blog Entries

This function checks for a license.

Created 5th April 2020, last changed 5th April 2020

Mutex.Name - Mutex.Unlock