- swipl
- library
- error.pl
- debug.pl
- apply.pl -- Apply predicates on a list
- lists.pl
- broadcast.pl -- Event service
- predicate_options.pl -- Access and analyse predicate options
- shlib.pl
- option.pl -- Option list processing
- thread_pool.pl
- gensym.pl
- settings.pl -- Setting management
- arithmetic.pl -- Extensible arithmetic
- main.pl -- Provide entry point for scripts
- readutil.pl -- Read utilities
- operators.pl -- Manage operators
- pairs.pl -- Operations on key-value lists
- prolog_source.pl -- Examine Prolog source-files
- quasi_quotations.pl -- Define Quasi Quotation syntax
- url.pl -- Analysing and constructing URL
- www_browser.pl -- Open a URL in the users browser
- prolog_colour.pl -- Prolog syntax colouring support.
- record.pl -- Access compound arguments by name
- prolog_xref.pl -- Prolog cross-referencer data collection
- occurs.pl -- Finding and counting sub-terms
- ordsets.pl -- Ordered set manipulation
- assoc.pl -- Binary associations
- ugraphs.pl -- Graph manipulation library
- iostream.pl -- Utilities to deal with streams
- atom.pl -- Operations on atoms
- prolog_pack.pl -- A package manager for Prolog
- solution_sequences.pl -- Modify solution sequences
- git.pl -- Run GIT commands
- ctypes.pl -- Character code classification
- utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
- base64.pl -- Base64 encoding and decoding
- persistency.pl -- Provide persistent dynamic predicates
- pure_input.pl -- Pure Input from files and streams
- nb_set.pl -- Non-backtrackable sets
- aggregate.pl -- Aggregation operators on backtrackable predicates
- csv.pl -- Process CSV (Comma-Separated Values) data
- dialect.pl -- Support multiple Prolog dialects
- apply_macros.pl -- Goal expansion rules to avoid meta-calling
- yall.pl -- Lambda expressions
- prolog_code.pl -- Utilities for reasoning about code
- dif.pl -- The dif/2 constraint
- thread.pl -- High level thread primitives
- rbtrees.pl -- Red black trees
- nb_rbtrees.pl -- Non-backtrackable operations on red black trees
- random.pl -- Random numbers
- sandbox.pl -- Sandboxed Prolog code
- prolog_format.pl -- Analyse format specifications
- pprint.pl -- Pretty Print Prolog terms
- modules.pl -- Module utility predicates
- lazy_lists.pl -- Lazy list handling
- edinburgh.pl -- Some traditional Edinburgh predicates
- prolog_clause.pl -- Get detailed source-information about a clause
- prolog_breakpoints.pl -- Manage Prolog break-points
- dicts.pl -- Dict utilities
- tables.pl -- XSB interface to tables
- prolog_versions.pl -- Demand specific (Prolog) versions
- base32.pl -- Base32 encoding and decoding
- charsio.pl -- I/O on Lists of Character Codes
- codesio.pl -- I/O on Lists of Character Codes
- coinduction.pl -- Co-Logic Programming
- date.pl -- Process dates and times
- heaps.pl -- heaps/priority queues
- sort.pl
- statistics.pl -- Get information about resource usage
- terms.pl -- Term manipulation
- varnumbers.pl -- Utilities for numbered terms
- when.pl -- Conditional coroutining
- backcomp.pl -- Backward compatibility
- prolog_profile.pl -- Execution profiler
- listing.pl -- List programs and pretty print clauses
- quintus.pl -- Quintus compatibility
- prolog_config.pl -- Provide configuration information
- prolog_stack.pl -- Examine the Prolog stack
- prolog_metainference.pl -- Infer meta-predicate properties
- threadutil.pl -- Interactive thread utilities
- prolog_debug.pl -- User level debugging tools
- prolog_wrap.pl -- Wrapping predicates
- prolog_codewalk.pl -- Prolog code walker
- explain.pl -- Describe Prolog Terms
- zip.pl -- Access resource ZIP archives
- writef.pl -- Old-style formatted write
- check.pl -- Consistency checking
- make.pl -- Reload modified source files
- wfs.pl -- Well Founded Semantics interface
- prolog_autoload.pl -- Autoload all dependencies
- qsave.pl -- Save current program as a state or executable
- fastrw.pl -- Fast reading and writing of terms
- help.pl -- Text based manual
- hashtable.pl -- Hash tables
- intercept.pl -- Intercept and signal interface
- prolog_history.pl -- Per-directory persistent commandline history
- prolog_jiti.pl -- Just In Time Indexing (JITI) utilities
- increval.pl -- Incremental dynamic predicate modification
- portray_text.pl -- Portray text
- optparse.pl -- command line parsing
- strings.pl -- String utilities
- prolog_trace.pl -- Print access to predicates
- tty.pl -- Terminal operations
- prolog_coverage.pl -- Coverage analysis tool
- shell.pl -- Elementary shell commands
- system.pl -- System utilities
- ansi_term.pl -- Print decorated text to ANSI consoles
- edit.pl -- Editor interface
- streams.pl -- Manage Prolog streams
- win_menu.pl -- Console window menu
- oset.pl -- Ordered set manipulation
- files.pl
- rwlocks.pl -- Read/write locks
- macros.pl -- Macro expansion
- library
- trace(:Pred) is det
- trace(:Pred, +PortSpec) is det
- Print passes through ports of specified predicates. Pred is a,
possible partial, specification of a predicate as it is also used be
spy/1 and similar predicates. Where a full predicate specification
is of the shape
Module:Name/Arity
(or `//Arity for non-terminals), both the module and arity may be omitted in which case Pred refers to all matching predicates. PortSpec is either a single port (call
,exit
,fail
orredo
), preceded with+
or-
or a list of these. The predicate modifies the current trace specification and then installs a suitable wrapper for the predicate using wrap_predicate/4. For example:?- trace(append). % lists:append/2: [all] % lists:append/3: [all] % append/1: [all] true. ?- append([a,b], [c], L). T [10] Call: lists:append([a, b], [c], _18032) T [19] Call: lists:append([b], [c], _19410) T [28] Call: lists:append([], [c], _20400) T [28 +0.1ms] Exit: lists:append([], [c], [c]) T [19 +0.2ms] Exit: lists:append([b], [c], [b, c]) T [10 +0.5ms] Exit: lists:append([a, b], [c], [a, b, c]) L = [a, b, c]. ?- trace(append, -all). % lists:append/2: Not tracing % lists:append/3: Not tracing % append/1: Not tracing
The text between [] indicates the call depth (first number) and for all ports except the
call
port the wall time since the start (call port) in milliseconds. Note that the instrumentation and print time is included in the time. In the example above the actual time is about 0.00001ms on todays hardware.