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library ieee;
entity shared2 is
type scounter is protected
use ieee.std_logic_1164.all; ---<<<< test target
impure function inc (by : integer) return integer;
impure function get return integer;
end protected;
type scounter is protected body
variable cnt : integer := 0;
impure function inc (by : integer) return integer is
begin
cnt := cnt + by;
return cnt;
end function;
impure function get return integer is
begin
return cnt;
end function;
end protected body;
end entity shared2;
architecture rtl of shared2 is
shared variable tcnt : scounter;
signal clk : bit := '0';
signal term : integer := 0;
begin
process(clk)
variable tv : integer;
begin
if clk'event and clk = '1' then
tv := tcnt.inc(1);
end if;
end process;
process(clk)
variable tv : integer;
begin
if clk'event and clk = '0' then
tv := tcnt.inc(2);
end if;
end process;
process
begin
clk <= not clk;
wait for 1 ns;
end process;
process
begin
if clk'event and clk = '0' then
if term >= 20 then
report "Sim end ...."; -- severity failure;
std.env.finish;
end if;
term <= term + 1;
report integer'image(tcnt.get);
end if;
wait on clk;
end process;
end rtl;
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