--********************************************************************************************************************
-- Created:  9-Mar-2021 22:28:32 by OpenVMS SDL EV3-3      
-- Source:  20-APR-1993 14:30:34 $1$DGA8085:[LIB_ADA.LIS]PBHDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package PBHDEF is
 
--  module $PBHDEF
 
--+
-- DEFINE PERFORMANCE BUFFER HEADER
---
 
    PBH_K_START			: constant := 13;			-- START OF DATA AREA 
    PBH_C_START			: constant := 13;			-- START OF DATA AREA 
    PBH_K_LENGTH		: constant := 512;			-- LENGTH OF PERFORMANCE DATA BUFFER 
    PBH_C_LENGTH		: constant := 512;			-- LENGTH OF PERFORMANCE DATA BUFFER 
    PBH_S_PBHDEF		: constant := 512;
 
    type PBH_TYPE is
	record
	    BUFRFL	: ADDRESS;					-- BUFFER FORWARD LINK 
	    BUFRBL	: ADDRESS;					-- BUFFER BACKWARD LINK 
	    SIZE	: UNSIGNED_WORD;				-- SIZE OF PERFORMANCE DATA BUFFER 
	    TYP		: UNSIGNED_BYTE;				-- DATA STRUCTURE TYPE 
	    MSGCNT	: UNSIGNED_WORD;				-- COUNT OF MESSAGES IN BUFFER 
	    FILLER_1	: UNSIGNED_BYTE_ARRAY (1 .. 499);		-- DATA AREA 
	end record;
 
	    for PBH_TYPE use 
		record
		    BUFRFL	at 0 range 0 .. 31;
		    BUFRBL	at 4 range 0 .. 31;
		    SIZE	at 8 range 0 .. 15;
		    TYP		at 10 range 0 .. 7;
		    MSGCNT	at 11 range 0 .. 15;
		    FILLER_1	at 13 range 0 .. 3991;
		end record;
	    for PBH_TYPE'SIZE use 4096;
 
    PBH_TYPE_INIT : constant PBH_TYPE := 
	    (BUFRFL	=> ADDRESS_ZERO,
	    BUFRBL	=> ADDRESS_ZERO,
	    SIZE	=> 0,
	    TYP		=> 0,
	    MSGCNT	=> 0,
	    FILLER_1	=> (others => 0));
 
end PBHDEF;