Documentation

Parcel
in

Tags
template

A parcel object for sharing data across execution contexts.

A parcel is an object that stores a value in a safe way that can be shared between different threads or processes. Different handles to the same parcel will access the same data, and a parcel handle itself is serializable and can be transported to other execution contexts.

Wrapping and unwrapping values in the parcel are not atomic. To prevent race conditions and guarantee safety, you should use the provided synchronization methods to acquire a lock for exclusive access to the parcel first before accessing the contained value.

Table of Contents

Methods

synchronized()  : R
Invokes a callback while maintaining a lock on the parcel. The current value of the parcel is provided as the first argument to the callback function. The return value of the callback is stored as the new value of the parcel.
unwrap()  : T

Methods

synchronized()

Invokes a callback while maintaining a lock on the parcel. The current value of the parcel is provided as the first argument to the callback function. The return value of the callback is stored as the new value of the parcel.

public synchronized(callable(T): R $closure) : R
Parameters
$closure : callable(T): R

The closure to invoke when a lock is obtained on the parcel. The parcel value is given as the single argument to the closure. The return value is stored as the new parcel value.

Tags
template
Return values
R —

The value of the parcel after the closure was invoked.

unwrap()

public unwrap() : T
Return values
T —

The value inside the parcel.


        

        
    




    

    

                                

                

                            
    

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