• Dsby (18/18) Mar 30 2016 Like this:
• =?UTF-8?Q?Ali_=c3=87ehreli?= (10/27) Mar 31 2016 No, you can't.

Dsby <dushibaiyu yahoo.com> writes:

Like this:

ubyte[] fun()
{
     ubyte[] str = cast(ubyte[])"hello world";
     ubyte[] by = Mallocator.instance.allocate(str.length);
     by[] = str[];
     return by[5..$];
}

void mian()
{
     ubyte[] aa = fun();
    // i want free the aa's momeny.
    //Mallocator.instance.deallocate(aa);// it is erro, aa.ptr != 
by.ptr?
  // can I get the by's ptr and length?
}


can I get "by" in main function by aa?
i can get the way?is it possible ？

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 03/30/2016 11:39 PM, Dsby wrote:
 Like this:

 ubyte[] fun()
 {
      ubyte[] str = cast(ubyte[])"hello world";
      ubyte[] by = Mallocator.instance.allocate(str.length);
      by[] = str[];
      return by[5..$];
 }

 void mian()
 {
      ubyte[] aa = fun();
     // i want free the aa's momeny.
     //Mallocator.instance.deallocate(aa);// it is erro, aa.ptr != by.ptr?
   // can I get the by's ptr and length?
 }


 can I get "by" in main function by aa?
 i can get the way?is it possible ？

No, you can't.

Normally, you would have a cleanup function that corresponds to fun(), 
which the users call when they're done with their resources.

void foo_cleanup(ubyte[] by) {
     // Do your magic here to find the original pointer.
     // For example, you can use an AA to map from
     // by.ptr to the original pointer.
}

Ali