SUBROUTINE DYN0_UNMAP( SLOT, STATUS ) *+ * Name: * DYN0_UNMAP * Purpose: * Unmap an area of memory and free associated resources * Language: * Starlink Fortran * Invocation: * CALL DYN0_UNMAP( SLOT, STATUS ) * Description: * Frees memory associated with a particular DYN slot. If the memory * is mapped from a file then the file is deleted, otherwise the * memory is simply returned to the heap. * Arguments: * SLOT = INTEGER (given) * Internal slot number * STATUS = INTEGER (given and returned) * The global status. * Examples: * {routine_example_text} * {routine_example_description} * Pitfalls: * {pitfall_description}... * Notes: * {routine_notes}... * Prior Requirements: * {routine_prior_requirements}... * Side Effects: * {routine_side_effects}... * Algorithm: * {algorithm_description}... * Accuracy: * {routine_accuracy} * Timing: * {routine_timing} * External Routines Used: * {name_of_facility_or_package}: * {routine_used}... * Implementation Deficiencies: * {routine_deficiencies}... * References: * DYN Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/dyn.html * Keywords: * package:dyn, usage:private * Copyright: * Copyright (C) University of Birmingham, 1995 * Authors: * DJA: David J. Allan (Jet-X, University of Birmingham) * {enter_new_authors_here} * History: * 20 Mar 1995 (DJA): * Original version. * 10 Jan 1996 (DJA): * Added diagnostic * {enter_changes_here} * Bugs: * {note_any_bugs_here} *- * Type Definitions: IMPLICIT NONE ! No implicit typing * Global Constants: INCLUDE 'SAE_PAR' ! SAE constants INCLUDE 'ADI_PAR' INCLUDE 'DAT_PAR' * Global Variables: INCLUDE 'DYN_CMN' ! DYN common block * DYS_PTR[] = INTEGER (given and returned) * Number of items in a memory area * DYS_NITEM[] = INTEGER (given and returned) * Number of items in a memory area * DYS_FID[] = INTEGER (given and returned) * Number of items in a memory area * Arguments Given: INTEGER SLOT * Status: INTEGER STATUS ! Global status * Local Variables: CHARACTER*(DAT__SZLOC) LOC ! HDS file handle *. * Check inherited global status. IF ( STATUS .NE. SAI__OK ) RETURN * File based memory? IF ( DYS_FID(SLOT) .NE. ADI__NULLID ) THEN * Extract locator CALL ADI1_GETLOC( DYS_FID(SLOT), LOC, STATUS ) * Unmap the memory CALL DAT_UNMAP( LOC, STATUS ) * Delete the file CALL HDS_ERASE( LOC, STATUS ) * Free the ADI object CALL ADI_ERASE( DYS_FID(SLOT), STATUS ) * Otherwise heap ELSE CALL PSX_FREE( DYS_PTR(SLOT), STATUS ) END IF * Diagnostic? IF ( DYS_DIAG ) THEN CALL MSG_SETI( 'PTR', DYS_PTR(SLOT) ) CALL MSG_SETI( 'NB', DYS_NBYTE(SLOT) ) CALL ADP_OUT( 'DYN: Deallocated ^NB bytes at address ^PTR' ) END IF * Zero the slot regardless of status DYS_PTR(SLOT) = 0 DYS_FID(SLOT) = ADI__NULLID * Report any errors IF ( STATUS .NE. SAI__OK ) CALL AST_REXIT( 'DYN0_UNMAP', STATUS ) END