From: russ lyttle <lyttlec@removegmail.com>
Subject: Re: Gnat Problem - Freezing too soon
Date: Fri, 1 Mar 2019 16:50:10 -0500
Date: 2019-03-01T16:50:10-05:00 [thread overview]
Message-ID: <q5c9eg$1fsp$1@gioia.aioe.org> (raw)
In-Reply-To: bba6782d-d9da-44ad-af51-039ff8b4be37@googlegroups.com
On 3/1/19 11:54 AM, Anh Vo wrote:
> On Friday, March 1, 2019 at 6:21:26 AM UTC-8, russ lyttle wrote:
>> On 2/28/19 7:49 PM, Anh Vo wrote:
>>> On Thursday, February 28, 2019 at 2:11:11 PM UTC-8, russ lyttle wrote:
>>>> On 2/28/19 4:22 PM, Simon Wright wrote:
>>>>> russ lyttle <lyttlec@removegmail.com> writes:
>>>>>
>>>>>> Example from the bookAnalysable Real-Time Systems :
>>>>>>
>>> ---------
>>>>
>>>> Would I be submitting a bug report against an already patched version of
>>>> gnat?
>>>
>>> Again, please post sporadics.ads in its entirety. So, we can duplicate your finding or not.
>>>
>>>
>> Thanks for responding. We found it definitely a bug in gnat and are
>> submitting a bug report.
>
> It is fine to send in a report if you are confident that it is a bug in latest GNAT. Otherwise, we would like to see the content of sporadics.ads. So, we can either confirm or not your finding.
>
>
Here they are. These are from Analysable Real-Time Systems Progrmmed in
Ada, Chap.20, Pg. 472-473. Line 29 gives different error from line 44.
Full code for sporadics.ads:
with System; use System;
with Ada.Real_Time; use Ada.Real_Time;
package Sporadics is
type Sporadic_Invoke_Interface is Synchronized Interface;
procedure Start (S: in out Sporadic_Invoke_Interface)
is abstract;
type Any_Sporadic_Invoke_Interface is access all
Sporadic_Invoke_Interface'Class;
type Sporadic_Thread_Interface is Synchronized Interface;
procedure Wait_Start (S: in out Sporadic_Thread_Interface)
is abstract;
type Any_Sporadic_Thread_Interface is access all
Sporadic_Thread_Interface'Class;
type Sporadic_State is abstract tagged
record
Pri : Priority;
Ceiling_Priority : Priority;
MIT_In_Mili : Time_Span;
end record;
procedure Initialize_Code (S: in out Sporadic_State)
is abstract;
procedure Sporadic_Code (S: in out Sporadic_State)
is abstract;
type Any_Sporadic_State is access all Sporadic_State'Class;
protected type Sporadic_Agent (S: Any_Sporadic_State)
--with Priority => S.Ceiling_Prioriy
is
new Sporadic_Invoke_Interface and
Sporadic_Thread_Interface
with
-- for the Start operation
overriding procedure Start;
overriding entry Wait_Start;
private
Start_Open : Boolean := False;
end Sporadic_Agent;
task type Sporadic (S : Any_Sporadic_State;
A : Any_Sporadic_Thread_Interface)
with Priority => S.pri
is
end Sporadic;
end Sporadics;
-----------------------------------------------------------------------
Full code for sporadics.adb:
package body Sporadics is
protected body Sporadic_Agent is
procedure Start is
begin
Start_Open := False;
end Start;
entry Wait_Start
when Start_Open is
begin
Start_Open := False;
end Wait_Start;
end Sporadic_Agent;
task body Sporadic is
begin
S.Initialize_Code;
loop
A.Wait_Start;
S.Sporadic_Code;
end loop;
end Sporadic;
end Sporadics;
next prev parent reply other threads:[~2019-03-01 21:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-28 18:34 Gnat Problem - Freezing too soon russ lyttle
2019-02-28 21:19 ` Anh Vo
2019-02-28 21:31 ` russ lyttle
2019-02-28 21:22 ` Simon Wright
2019-02-28 22:11 ` russ lyttle
2019-03-01 0:49 ` Anh Vo
2019-03-01 14:21 ` russ lyttle
2019-03-01 16:54 ` Anh Vo
2019-03-01 21:50 ` russ lyttle [this message]
2019-03-02 1:08 ` Anh Vo
2019-03-02 3:55 ` russ lyttle
2019-03-02 5:50 ` Anh Vo
2019-03-02 20:19 ` russ lyttle
2019-03-02 21:35 ` Simon Wright
2019-03-03 20:42 ` russ lyttle
2019-03-03 21:26 ` Simon Wright
2019-03-04 0:33 ` russ lyttle
2019-03-02 14:09 ` Simon Wright
2019-03-01 8:12 ` Simon Wright
2019-03-01 14:17 ` russ lyttle
2019-03-01 18:10 ` Simon Wright
2019-03-01 21:35 ` russ lyttle
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