RE: [vhdl-200x] Parallel execution of procedures within sequentiel statements

As they execute sequentially they first will start and execution stays there
until it completes.
Only then does the next start. There are ways to run them in parallel.

But that explanation takes more time than I have right now.

-----Original Message-----
From: owner-vhdl-200x@eda.org [mailto:owner-vhdl-200x@eda.org] On Behalf Of
Stolpe Martin
Sent: Wednesday, February 15, 2012 6:19 AM
To: vhdl-200x@eda.org
Subject: [vhdl-200x] Parallel execution of procedures within sequentiel
statements

Hello,

I hope this is the right place to ask this question:
Is it possible to execute procedures in process in parallel? What I have in
mind would be something like this:

....
procedure my_proc
  (signal din : in std_logic_vector;
   signal dout : out std_logic) is
begin
  -- procedure statements
  ...
  wait for 8 ns;
  ...
end my_proc;

signal sig1, sig2: std_logic_vector (31 downto 0); signal data1, data2:
std_logic;

begin
  ...
  simulation_proc: process
  begin
    ...
    -- the following two processes should be started in parallel
    -- begin parallel (
      my_proc(sig1, data1);
      my_proc(sig2, data2);
    -- )
    -- end parallel;
    -- end parallel block
    wait;
  end process simulation;
...

The idea behind this is that I want to start the processes like threads in
other programming languages. If I write the code like this in a process at
first "my_proc(sig1, data1);" would be started, then the simulator would
wait 8 ns in that procedure and after that time the procedure "my_proc(sig2,
data2);" would be started, where the simulator would wait for another 8 ns;

Best regards
Martin Stolpe

i.A. Martin Stolpe
Systemingenieur
R&D Smart Embedded Systems (SW)

NewTec GmbH
System-Entwicklung und Beratung
Heinrich-von-Stephan-Str. 8B
D-79100 Freiburg

Telefon  : +49 (0) 761 21117-40
Telefax  : +49 (0) 761 21117-41
email    : martin.stolpe@newtec.de
web      : http://www.newtec.de

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