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HELP POPVARS John Williams, Feb 1991
-- Introduction --------------------------------------------------------
The POPLOG run-time system includes a large number of built-in "system
variables", which define and control many aspects of its behaviour.
Many, but not all, of these variables have names starting with the
prefix "pop", hence the name of this file.
This file lists most of these variables, except for those that control
the VED editor. These are documented in REF * VEDVARS.
To find out more about any of these variables, use one of the following
commands:
<ENTER> ?? <name> (extracts description from REF file)
<ENTER> ref <name> (edits description in REF file)
(see HELP * QUERY and HELP * REF, respectively).
Also, the name of the relevant REF (or HELP) file is listed alongside
each variable name.
CONTENTS - (Use <ENTER> g to access required sections)
-- Introduction
-- Current POPLOG Status
-- Operating System Interface
-- Store Management
-- Signal Handling
-- Subsystems
-- Number Crunching
-- Character I/O
-- Item I/O
-- Library Interface
-- The POPLOG VM
-- POP-11 Compiler
-- Errors & Debugging
-- Miscellaneous
-- Current POPLOG Status -----------------------------------------------
These variables hold information about the current version and
invocation of POPLOG.
pop_system_version REF * SYSTEM
popversion REF * SYSTEM
popheader REF * SYSTEM
poparg0 REF * SYSTEM
poparglist REF * SYSTEM
poparglist0 REF * SYSTEM
pop_nobanner REF * SYSTEM
pop_noinit REF * SYSTEM
pop_runtime REF * SYSTEM
pop_runtime_actions REF * SYSTEM
popunderx REF * SYSTEM
popdirectory REF * SYSUTIL
popenvlist REF * SYSUTIL
poppid REF * SYSUTIL
popusername REF * SYSUTIL
pop_after_restore REF * SYSTEM
pop_exit_ok REF * SYSTEM
pop_first_setpop REF * SYSTEM
popexit REF * SYSTEM
syssetup REF * SYSTEM
sysxsetup REF * SYSTEM
xpopexit REF * X
-- Operating System Interface ------------------------------------------
These variables control POPLOG's interface to the operating system.
current_directory REF * SYSUTIL
pop_file_mode REF * SYSIO
pop_file_versions REF * SYSIO
pop_file_write_error REF * SYSIO
pop_max_filename_len REF * SYSUTIL
pop_status REF * SYSUTIL
-- Store Management ----------------------------------------------------
These variables control POPLOG's memory allocation and garbage
collection mechanisms.
pop_after_gc REF * SYSTEM
pop_callstack_lim REF * PROCEDURE
pop_gc_copy REF * SYSTEM
pop_gc_use_vadvise (not documented)
pop_prolog_lim REF * PROLOG
pop_prolog_size REF * PROLOG
pop_record_writeable REF * SYSTEM
popgcratio REF * SYSTEM
popgctime REF * SYSTEM
popgctrace REF * SYSTEM
popmemlim REF * SYSTEM
popmemused REF * SYSTEM
popminmemlim REF * SYSTEM
-- Signal Handling -----------------------------------------------------
These variables control POPLOG's signal handling and timer mechanisms.
interrupt REF * SYSTEM
io_interrupt REF * SYSTEM
pop_enable_interrupts REF * SIGNALS
pop_timeout REF * SYSIO
popsuspend REF * SIGNALS
sys_max_signal REF * SIGNALS
pop_ast_queue REF * ASYNC
pop_asts_enabled REF * ASYNC
timer_interrupt REF * TIMES
-- Subsystems ----------------------------------------------------------
These variables control the "subsystem" mechanism.
pop_default_type REF * CHARIO
pop_setpop_compiler REF * SYSTEM
popsetpop REF * SYSTEM
subsystem REF * SUBSYSTEM
sys_subsystem_table REF * SUBSYSTEM
-- Number Crunching ----------------------------------------------------
These variables affect POPLOG's numeric processing routines.
pop_float_radix REF * NUMBERS
pop_reduce_ratios REF * NUMBERS
popdprecision REF * NUMBERS
popradians REF * NUMBERS
ranseed REF * NUMBERS
-- Character I/O -------------------------------------------------------
These variables may be used to re-direct or modify POPLOG's low-level
character I/O facilities.
cucharerr REF * CHARIO
cucharin REF * POPCOMPILE
cucharout REF * CHARIO
cuchartrace REF * CHARIO
handlepopescape (not documented)
pop_buffer_charout REF * CHARIO
pop_charerr_col REF * CHARIO
pop_charerr_device REF * SYSIO
pop_charin_device REF * SYSIO
pop_charin_escapes REF * CHARIO
pop_chario_trap REF * CHARIO
pop_charout_col REF * CHARIO
pop_charout_device REF * SYSIO
pop_iso_latin REF * STRINGS
pop_null_device REF * SYSIO
pop_timeout_secs REF * SYSIO
popdeverr REF * SYSIO
popdevin REF * SYSIO
popdevout REF * SYSIO
poplinemax REF * CHARIO
poplinewidth REF * CHARIO
poplogfile REF * CHARIO
popprompt REF * SYSIO
poprawdevin REF * SYSIO
poprawdevout REF * SYSIO
rawcharin REF * CHARIO
rawcharout REF * CHARIO
rawsubstringout REF * CHARIO
-- Item I/O ------------------------------------------------------------
These variables control the format in which data items are read and
printed.
pop_longstrings REF * ITEMISE
popnewline REF * ITEMISE
pop_=>_flag REF * PRINT
pop_pr_exponent REF * PRINT
pop_pr_level REF * PRINT
pop_pr_places REF * PRINT
pop_pr_quotes REF * PRINT
pop_pr_radix REF * PRINT
pop_pr_ratios REF * PRINT
pr REF * PRINT
-- Library Interface ---------------------------------------------------
These variables influence POPLOG's library mechanisms.
pop_autoload REF * LIBRARY
prautoloadwarn REF * LIBRARY
popincludelist REF * PROGLIST
popautolist REF * LIBRARY
popuseslist REF * LIBRARY
popdisk REF * LIBRARY
popdatalib REF * LIBRARY
poplibdir REF * LIBRARY
popliblibdir REF * LIBRARY
popsunlib REF * LIBRARY
-- The POPLOG VM -------------------------------------------------------
These variables control various aspects of the POPLOG VM ("virtual
machine").
dlocal_context REF * VMCODE
dlocal_process REF * VMCODE
pop_debugging REF * VMCODE
pop_new_lvar_list REF * VMCODE
pop_pas_mode REF * VMCODE
pop_syntax_only REF * VMCODE
pop_vm_compiling_list REF * VMCODE
pop_vm_dummy_idents REF * VMCODE
pop_vm_exec_apply REF * VMCODE
pop_vm_flags REF * VMCODE
popexecute REF * VMCODE
set_pop_pas_mode REF * VMCODE
sysAND REF * VMCODE
sysCALL REF * VMCODE
sysCALLQ REF * VMCODE
sysCALLS REF * VMCODE
sysCOMPILE REF * VMCODE
sysCONSTANT REF * VMCODE
sysDLABEL REF * VMCODE
sysDLVARS REF * VMCODE
sysENDLBLOCK REF * VMCODE
sysENDPROCEDURE REF * VMCODE
sysERASE REF * VMCODE
sysEXECUTE REF * VMCODE
sysEXEC_COMPILE REF * VMCODE
sysEXEC_OPTION_COMPILE REF * VMCODE
sysFIELD REF * VMCODE
sysGLOBAL REF * VMCODE
sysGOTO REF * VMCODE
sysGO_ON REF * VMCODE
sysIDENT REF * VMCODE
sysIFNOT REF * VMCODE
sysIFSO REF * VMCODE
sysLABEL REF * VMCODE
sysLBLOCK REF * VMCODE
sysLCONSTANT REF * VMCODE
sysLOCAL REF * VMCODE
sysLVARS REF * VMCODE
sysNEW_LABEL REF * VMCODE
sysNEW_LVAR REF * VMCODE
sysOR REF * VMCODE
sysPASSIGN REF * VMCODE
sysPLOG_ARG_PUSH REF * PROLOG
sysPLOG_IFNOT_ATOM REF * PROLOG
sysPLOG_RESTART REF * PROLOG
sysPLOG_RESTORE REF * PROLOG
sysPLOG_SAVE REF * PROLOG
sysPLOG_TERM_SWITCH REF * PROLOG
sysPOP REF * VMCODE
sysPROCEDURE REF * VMCODE
sysPUSH REF * VMCODE
sysPUSHQ REF * VMCODE
sysPUSHS REF * VMCODE
sysSWAP REF * VMCODE
sysSYNTAX REF * VMCODE
sysUCALL REF * VMCODE
sysUCALLQ REF * VMCODE
sysUCALLS REF * VMCODE
sysUFIELD REF * VMCODE
sysUPASSIGN REF * VMCODE
sysVARS REF * VMCODE
sysdeclare REF * VMCODE
-- POP-11 Compiler -----------------------------------------------------
These variables hold information about the current state of the POP-11
compiler.
current_section REF * SECTIONS
define_headers REF * SYNTAX
define_terminators REF * SYNTAX
loadcompiler REF * POPCOMPILE
loadwarning REF * POPCOMPILE
pop11_convert_weakref (not documented)
pop11_define_declare REF * POPCOMPILE
pop11_define_props REF * POPCOMPILE
pop11_testdef_code (not documented)
pop11_vars_default_check REF * POPCOMPILE
pop_#_include_stack REF * PROGLIST
pop_default_section REF * SECTIONS
pop_expr_inst REF * POPCOMPILE
pop_expr_item REF * POPCOMPILE
pop_expr_prec REF * POPCOMPILE
pop_expr_update REF * POPCOMPILE
pop_pop11_flags REF * POPCOMPILE
popclosebracket REF * POPCOMPILE
popclosebracket_exec REF * POPCOMPILE
popfilename REF * MISHAPS
poplastchar REF * CHARIO
poplastitem REF * PROGLIST
poplinenum REF * CHARIO
proglist REF * PROGLIST
proglist_macro_pair REF * PROGLIST
proglist_state REF * PROGLIST
-- Errors & Debugging --------------------------------------------------
These variables modify the behaviour of POPLOG's error handler, and
various other debugging tools.
pop_default_prmishap REF * MISHAPS
pop_mishap_doing_lim REF * MISHAPS
popmessages REF * MISHAPS
popmishaps REF * MISHAPS
popsyscall REF * MISHAPS
popwarnings REF * MISHAPS
prmishap REF * MISHAPS
prwarning REF * MISHAPS
pop_chain_trace HELP * TRACE
pop_process_trace HELP * TRACE
popmaxtraceindent HELP * TRACE
poptraceindent HELP * TRACE
systrace_pr HELP * TRACE
systrace_proc HELP * TRACE
tracing HELP * TRACE
-- Miscellaneous -------------------------------------------------------
Some miscellaneous variables.
database HELP * DATABASE
doctypelist REF * DOCUMENTATION
member REF * LISTS
pop_current_process REF * PROCESS
pop_hash_lim REF * PROPS
pop_readline_prompt REF * PROGLIST
poparray_by_row REF * ARRAYS
popmatchvars HELP * POPMATCHVARS
readline REF * PROGLIST
sys_destroy_dependent REF * PROPS
termcap_name REF * SYSUTIL (Unix only)
--- C.all/help/popvars
--- Copyright University of Sussex 1991. All rights reserved. ----------