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From: Dmitry A. Kazakov <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: new_line in a put_line
Date: Thu, 05 Dec 2002 10:44:16 +0100
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Date: 2002-12-05T10:44:16+01:00
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On Thu, 5 Dec 2002 07:16:10 +0100 (MET), "Grein, Christoph"
<christoph.grein@eurocopter.com> wrote:

>> You might also pack seizing the mutex into a "proxy" object
>> (File_Channel):
>> 
>>    type File_Channel is limited private;
>>    procedure Put (File : in out File_Channel; Text : String);
>>    procedure Put_Line (File : in out File_Channel; Text : String);
>>    procedure New_Line (File : in out File_Channel; Text : String);
>> ...
>> private
>>    type File_Channel is
>>       new Ada.Finalization.Limited_Controlled with null record;
>>    procedure Initialize (File : in out File_Channel);
>>    procedure Finalize (File : in out File_Channel);
>> 
>> Initialize would seize the mutex, Finalize would release it. Thus only
>> one instance of File_Channel may exist at a time.
>
>No, nothing prevents you from declaring lots of File_Channel objects concurrently, even 
>arrays of them.

OK, bad wording, I admit. Under "exists" I actually meant "exists at
run-time and is fully initialized".

---
Regards,
Dmitry Kazakov
www.dmitry-kazakov.de