Commit Graph

21 Commits

Author SHA1 Message Date
Fergus Henderson
04893bd957 Improve the on-line documentation of the mdb "set" command.
Estimated hours taken: 1
Branches: main

Improve the on-line documentation of the mdb "set" command.

doc/mdb_categories:
	Mention the "set" command, which was previously not documented here.

trace/mercury_trace_internal.c:
	Make the "set" command a part of the "parameter" commands,
	not the "browsing" commands.

trace/mercury_trace_help.c:
	Fix a misleading error message: errors caused by typing the
	wrong arguments to the "help" command are not "internal" errors.
2003-11-07 04:33:21 +00:00
Zoltan Somogyi
f007b45df8 Implement the infrastructure for term size profiling.
Estimated hours taken: 400
Branches: main

Implement the infrastructure for term size profiling. This means adding two
new grade components, tsw and tsc, and implementing them in the LLDS code
generator. In grades including tsw (term size words), each term is augmented
with an extra word giving the number of heap words it contains; in grades
including tsc (term size cells), each term is augmented with an extra word
giving the number of heap cells it contains. The extra word is at the start,
at offset -1, to leave almost all of the machinery for accessing the heap
unchanged.

For now, the only way to access term sizes is with a new mdb command,
"term_size <varspec>". Later, we will use term sizes in conjunction with
deep profiling to do experimental complexity analysis, but that requires
a lot more research. This diff is a necessary first step.

The implementation of term size profiling consists of three main parts:

- a source-to-source transform that computes the size of each heap cell
  when it is constructed (and increments it in the rare cases when a free
  argument of an existing heap cell is bound),

- a relatively small change to the code generator that reserves the extra
  slot in new heap cells, and

- extensions to the facilities for creating cells from C code to record
  the extra information we now need.

The diff overhauls polymorphism.m to make the source-to-source transform
possible. This overhaul includes separating type_ctor_infos and type_infos
as strictly as possible from each other, converting type_ctor_infos into
type_infos only as necessary. It also includes separating type_ctor_infos,
type_infos, base_typeclass_infos and typeclass_infos (as well as voids,
for clarity) from plain user-defined type constructors in type categorizations.
This change needs this separation because values of those four types do not
have size slots, but they ought to be treated specially in other situations
as well (e.g. by tabling).

The diff adds a new mdb command, term_size. It also replaces the proc_body
mdb command with new ways of using the existing print and browse commands
("print proc_body" and "browse proc_body") in order to make looking at
procedure bodies more controllable. This was useful in debugging the effect
of term size profiling on some test case outputs. It is not strictly tied
to term size profiling, but turns out to be difficult to disentangle.

compiler/size_prof.m:
	A new module implementing the source-to-source transform.

compiler/notes/compiler_design.html:
	Mention the new module.

compiler/transform_hlds.m:
	Include size_prof as a submodule of transform_hlds.

compiler/mercury_compile.m:
	If term size profiling is enabled, invoke its source-to-source
	transform.

compiler/hlds_goal.m:
	Extend construction unifications with an optional slot for recording
	the size of the term if the size is a constant, or the identity of the
	variable holding the size, if the size is not constant. This is
	needed by the source-to-source transform.

compiler/quantification.m:
	Treat the variable reference that may be in this slot as a nonlocal
	variable of construction unifications, since the code generator needs
	this.

compiler/compile_target_code.m:
	Handle the new grade components.

compiler/options.m:
	Implement the options that control term size profiling.

doc/user_guide.texi:
	Document the options and grade components that control term size
	profiling, and the term_size mdb command. The documentation is
	commented out for now.

	Modify the wording of the 'u' HLDS dump flag to include other details
	of unifications (e.g. term size info) rather than just unification
	categories.

	Document the new alternatives of the print and browse commands. Since
	they are for developers only, the documentation is commented out.

compiler/handle_options.m:
	Handle the implications of term size profiling grades.

	Add a -D flag value to print HLDS components relevant to HLDS
	transformations.

compiler/modules.m:
	Import the new builtin library module that implements the operations
	needed by term size profiling automatically in term size profiling
	grades.

	Switch the predicate involved to use state var syntax.

compiler/prog_util.m:
	Add predicates and functions that return the sym_names of the modules
	needed by term size profiling.

compiler/code_info.m:
compiler/unify_gen.m:
compiler/var_locn.m:
 	Reserve an extra slot in heap cells and fill them in in unifications
	marked by size_prof.

compiler/builtin_ops.m:
	Add term_size_prof_builtin.term_size_plus as a builtin, with the same
	implementation as int.+.

compiler/make_hlds.m:
	Disable warnings about clauses for builtins while the change to
	builtin_ops is bootstrapped.

compiler/polymorphism.m:
	Export predicates that generate goals to create type_infos and
	type_ctor_infos to add_to_construct.m. Rewrite their documentation
	to make it more detailed.

	Make orders of arguments amenable to the use of state variable syntax.

	Consolidate knowledge of which type categories have builtin unify and
	compare predicates in one place.

	Add code to leave the types of type_ctor_infos alone: instead of
	changing their types to type_info when used as arguments of other
	type_infos, create a new variable of type type_info instead, and
	use an unsafe_cast. This would make the HLDS closer to being type
	correct, but this new code is currently commented out, for two
	reasons. First, common.m is currently not smart enough to figure out
	that if X and Y are equal, then similar unsafe_casts of X and Y
	are also equal, and this causes the compiler do not detect some
	duplicate calls it used to detect. Second, the code generators
	are also not smart enough to know that if Z is an unsafe_cast of X,
	then X and Z do not need separate stack slots, but can use the same
	slot.

compiler/type_util.m:
	Add utility predicates for returning the types of type_infos and
	type_ctor_infos, for use by new code in polymorphism.m.

	Move some utility predicates here from other modules, since they
	are now used by more than one module.

	Rename the type `builtin_type' as `type_category', to better reflect
	what it does. Extend it to put the type_info, type_ctor_info,
	typeclass_info, base_typeclass_info and void types into categories
	of their own: treating these types as if they were a user-defined
	type (which is how they used to be classified) is not always correct.
	Rename the functor polymorphic_type to variable_type, since types
	such as list(T) are polymorphic, but they fall into the user-defined
	category. Rename user_type as user_ctor_type, since list(int) is not
	wholly user-defined but falls into this category. Rename pred_type
	as higher_order_type, since it also encompasses functions.

	Replace code that used to check for a few of the alternatives
	of this type with code that does a full switch on the type,
	to ensure that they are updated if the type definition ever
	changes again.

compiler/pseudo_type_info.m:
	Delete a predicate whose updated implementation is now in type_util.m.

compiler/mlds_to_c.m:
compiler/mlds_to_gcc.m:
compiler/mlds_to_il.m:
compiler/mlds_to_java.m:
	Still treat type_infos, type_ctor_infos, typeclass_infos and
	base_typeclass_infos as user-defined types, but prepare for when
	they won't be.

compiler/hlds_pred.m:
	Require interface typeinfo liveness when term size profiling is
	enabled.

	Add term_size_profiling_builtin.increase_size as a
	no_type_info_builtin.

compiler/hlds_out.m:
	Print the size annotations on unifications if HLDS dump flags call
	for unification details. (The flag test is in the caller of the
	modified predicate.)

compiler/llds.m:
	Extend incr_hp instructions and data_addr_consts with optional fields
	that allow the code generator to refer to N words past the start of
	a static or dynamic cell. Term size profiling uses this with N=1.

compiler/llds_out.m:
	When allocating memory on the heap, use the macro variants that
	specify an optional offset, and specify the offset when required.

compiler/bytecode_gen.m:
compiler/dense_switch.m:
compiler/dupelim.m:
compiler/exprn_aux.m:
compiler/goal_form.m:
compiler/goal_util.m:
compiler/higher_order.m:
compiler/inst_match.m:
compiler/intermod.m:
compiler/jumpopt.m:
compiler/lambda.m:
compiler/livemap.m:
compiler/ll_pseudo_type_info.m:
compiler/lookup_switch.m:
compiler/magic_util.m:
compiler/middle_rec.m:
compiler/ml_code_util.m:
compiler/ml_switch_gen.m:
compiler/ml_unify_gen.m:
compiler/mlds.m:
compiler/mlds_to_c.m:
compiler/mlds_to_gcc.m:
compiler/mlds_to_il.m:
compiler/mlds_to_java.m:
compiler/modecheck_unify.m:
compiler/opt_debug.m:
compiler/opt_util.m:
compiler/par_conj_gen.m:
compiler/post_typecheck.m:
compiler/reassign.m:
compiler/rl.m:
compiler/rl_key.m:
compiler/special_pred.m:
compiler/stack_layout.m:
compiler/static_term.m:
compiler/string_switch.m:
compiler/switch_gen.m:
compiler/switch_util.m:
compiler/table_gen.m:
compiler/term_util.m:
compiler/type_ctor_info.m:
compiler/unused_args.m:
compiler/use_local_vars.m:
	Minor updates to conform to the changes above.

library/term_size_prof_builtin.m:
	New module containing helper predicates for term size profiling.
	size_prof.m generates call to these predicates.

library/library.m:
	Include the new module in the library.

doc/Mmakefile:
	Do not include the term_size_prof_builtin module in the library
	documentation.

library/array.m:
library/benchmarking.m:
library/construct.m:
library/deconstruct.m:
library/io.m:
library/sparse_bitset.m:
library/store.m:
library/string.m:
	Replace all uses of MR_incr_hp with MR_offset_incr_hp, to ensure
	that we haven't overlooked any places where offsets may need to be
	specified.

	Fix formatting of foreign_procs.

	Use new macros defined by the runtime system when constructing
	terms (which all happen to be lists) in C code. These new macros
	specify the types of the cell arguments, allowing the implementation
	to figure out the size of the new cell based on the sizes of its
	fields.

library/private_builtin.m:
	Define some constant type_info structures for use by these macros.
	They cannot be defined in the runtime, since they refer to types
	defined in the library (list.list and std_util.univ).

util/mkinit.c:
	Make the addresses of these type_info structures available to the
	runtime.

runtime/mercury_init.h:
	Declare these type_info structures, for use in mkinit-generated
	*_init.c files.

runtime/mercury_wrapper.[ch]:
	Declare and define the variables that hold these addresses, for use
	in the new macros for constructing typed lists.

	Since term size profiling can refer to a memory cell by a pointer
	that is offset by one word, register the extra offsets with the Boehm
	collector if is being used.

	Document the incompatibility of MR_HIGHTAGS and the Boehm collector.

runtime/mercury_tags.h:
	Define new macros for constructing typed lists.

	Provide macros for preserving the old interface presented by this file
	to the extent possible. Uses of the old MR_list_cons macro will
	continue to work in grades without term size profiling. In term
	size profiling grades, their use will get a C compiler error.

	Fix a bug caused by a missing backslash.

runtime/mercury_heap.h:
	Change the basic macros for allocating new heap cells to take
	an optional offset argument. If this is nonzero, the macros
	increment the returned address by the given number of words.
	Term size profiling specifies offset=1, reserving the extra
	word at the start (which is ignored by all components of the
	system except term size profiling) for holding the size of the term.

	Provide macros for preserving the old interface presented by this file
	to the extent possible. Since the old MR_create[123] and MR_list_cons
	macros did not specify type information, they had to be changed
	to take additional arguments. This affects only hand-written C code.

	Call new diagnostic macros that can help debug heap allocations.

	Document why the macros in this files must expand to expressions
	instead of statements, evn though the latter would be preferable
	(e.g. by allowing them to declare and use local variables without
	depending on gcc extensions).

runtime/mercury_debug.[ch]:
	Add diagnostic macros to debug heap allocations, and the functions
	behind them if MR_DEBUG_HEAP_ALLOC is defined.

	Update the debugging routines for hand-allocated cells to print the
	values of the term size slot as well as the other slots in the relevant
	grades.

runtime/mercury_string.h:
	Provide some needed variants of the macro for copying strings.

runtime/mercury_deconstruct_macros.h:
runtime/mercury_type_info.c:
	Supply type information when constructing terms.

runtime/mercury_deep_copy_body.h:
	Preserve the term size slot when copying terms.

runtime/mercury_deep_copy_body.h:
runtime/mercury_ho_call.c:
runtime/mercury_ml_expand_body.h:
	Use MR_offset_incr_hp instead of MR_incr_hp to ensure that all places
	that allocate cells also allocate space for the term size slot if
	necessary.

	Reduce code duplication by using a now standard macro for copying
	strings.

runtime/mercury_grade.h:
	Handle the two new grade components.

runtime/mercury_conf_param.h:
	Document the C macros used to control the two new grade components,
	as well as MR_DEBUG_HEAP_ALLOC.

	Detect incompatibilities between high level code and profiling.

runtime/mercury_term_size.[ch]:
	A new module to house a function to find and return term sizes
	stored in heap cells.

runtime/mercury_proc_id.h:
runtime/mercury_univ.h:
	New header files. mercury_proc_id.h contains the (unchanged)
	definition of MR_Proc_Id, while mercury_univ.h contains the
	definitions of the macros for manipulating univs that used to be
	in mercury_type_info.h, updated to use the new macros for allocating
	memory.

	In the absence of these header files, the following circularity
	would ensue:

	mercury_deep_profiling.h includes mercury_stack_layout.h
		- needs definition of MR_Proc_Id
	mercury_stack_layout.h needs mercury_type_info.h
		- needs definition of MR_PseudoTypeInfo
	mercury_type_info.h needs mercury_heap.h
		- needs heap allocation macros for MR_new_univ_on_hp
	mercury_heap.h includes mercury_deep_profiling.h
		- needs MR_current_call_site_dynamic for recording allocations

	Breaking the circular dependency in two places, not just one, is to
	minimize similar problems in the future.

runtime/mercury_stack_layout.h:
	Delete the definition of MR_Proc_Id, which is now in mercury_proc_id.h.

runtime/mercury_type_info.h:
	Delete the macros for manipulating univs, which are now in
	mercury_univ.h.

runtime/Mmakefile:
	Mention the new files.

runtime/mercury_imp.h:
runtime/mercury.h:
runtime/mercury_construct.c:
runtime/mercury_deep_profiling.h:
	Include the new files at appropriate points.

runtime/mercury.c:
	Change the names of the functions that create heap cells for
	hand-written code, since the interface to hand-written code has
	changed to include type information.

runtime/mercury_tabling.h:
	Delete some unused macros.

runtime/mercury_trace_base.c:
runtime/mercury_type_info.c:
	Use the new macros supplying type information when constructing lists.

scripts/canonical_grade_options.sh-subr:
	Fix an undefined sh variable bug that could cause error messages
	to come out without identifying the program they were from.

scripts/init_grade_options.sh-subr:
scripts/parse_grade_options.sh-subr:
scripts/canonical_grade_options.sh-subr:
scripts/mgnuc.in:
	Handle the new grade components and the options controlling them.

trace/mercury_trace_internal.c:
	Implement the mdb command "term_size <varspec>", which is like
	"print <varspec>", but prints the size of a term instead of its value.
	In non-term-size-profiling grades, it prints an error message.

	Replace the "proc_body" command with optional arguments to the "print"
	and "browse" commands.

doc/user_guide.tex:
	Add documentation of the term_size mdb command. Since the command is
	for implementors only, and works only in grades that are not yet ready
	for public consumption, the documentation is commented out.

	Add documentation of the new arguments of the print and browse mdb
	commands. Since they are for implementors only, the documentation
	is commented out.

trace/mercury_trace_vars.[ch]:
	Add the functions needed to implement the term_size command, and
	factor out the code common to the "size" and "print"/"browse" commands.

	Decide whether to print the name of a variable before invoking the
	supplied print or browse predicate on it based on a flag design for
	this purpose, instead of overloading the meaning of the output FILE *
	variable. This arrangement is much clearer.

trace/mercury_trace_browse.c:
trace/mercury_trace_external.c:
trace/mercury_trace_help.c:
	Supply type information when constructing terms.

browser/program_representation.m:
	Since the new library module term_size_prof_builtin never generates
	any events, mark it as such, so that the declarative debugger doesn't
	expect it to generate any.

	Do the same for the deep profiling builtin module.

tests/debugger/term_size_words.{m,inp,exp}:
tests/debugger/term_size_cells.{m,inp,exp}:
	Two new test cases, each testing one of the new grades.

tests/debugger/Mmakefile:
	Enable the two new test cases in their grades.

	Disable the tests sensitive to stack frame sizes in term size profiling
	grades.

tests/debugger/completion.exp:
	Add the new "term_size" mdb command to the list of command completions,
	and delete "proc_body".

tests/debugger/declarative/dependency.{inp,exp}:
	Use "print proc_body" instead of "proc_body".

tests/hard_coded/nondet_c.m:
tests/hard_coded/pragma_inline.m:
	Use MR_offset_incr_hp instead of MR_incr_hp to ensure that all places
	that allocate cells also allocate space for the term size slot if
	necessary.

tests/valid/Mmakefile:
	Disable the IL tests in term size profiling grades, since the term size
	profiling primitives haven't been (and probably won't be) implemented
	for the MLDS backends, and handle_options causes a compiler abort
	for grades that combine term size profiling and any one of IL, Java
	and high level C.
2003-10-20 07:29:59 +00:00
Peter Ross
60e2eb8b70 Record foreign_decls in the .mh file.
Estimated hours taken: 8
Branches: main

Record foreign_decls in the .mh file.
This fixes a bug where a definitions of pragma exported functions where
refereing to undefined pragma foreign_type names.

compiler/export.m:
    Output the foreign_decls in the .mh file.
    A .mh file is now created if there is a pragma export or any
    foreign_decls in the module.
    No longer create a .h version of the .mh file as these names
    conflict with system header files, and the change was only needed
    for bootstrapping.

compiler/foreign.m:
    Change the type foreign_export_decls so that it records the foreign decls.
    Add the utility predicate decl_guard which is used to get the name used
    to protect foreign decls.

compiler/intermod.m:
    No longer output the foreign_decls in the .opt file instead place a
    foreign_import_module which will pick up the .mh file for inclusion
    instead.

compiler/mercury_compile.m:
    Guard the declarations output in the C file with decl_guard.  We
    output this second copy because it uses the line numbers of the
    source file for the declarations allowing one to debug problems more
    easily.

compiler/mlds_to_c.m:
    Guard the declaration output in the .mih file with decl_guard.

compiler/modules.m:
    When intermodule optimization is enabled add a dependency that all
    the .c file must be built before the .o file.  This avoid problems
    where header files aren't built before being needed to compile the
    .o file.

trace/mercury_trace_browse.c:
trace/mercury_trace_declarative.c:
trace/mercury_trace_external.c:
trace/mercury_trace_help.c:
trace/mercury_trace_internal.c:
    Switch to the .mh extension.

tests/hard_coded/foreign_type.m:
    Enable testing of whether pragma export and pragma foreign_type work
    together.

tests/invalid/Mmakefile:
tests/invalid/foreign_decl_line_number.err_exp:
tests/invalid/foreign_decl_line_number.err_exp2:
tests/invalid/foreign_decl_line_number.m:
    Test that the line numbers for foreign_decl are still correct.
2002-08-05 21:46:23 +00:00
Simon Taylor
32051f5467 Add support for command line completion to mdb.
Estimated hours taken: 40
Branches: main

Add support for command line completion to mdb.

NEWS:
	Document the change.

trace/mercury_trace_completion.{c,h}:
	Define the framework for completion.
	Examine command lines to determine which completers to use.

trace/mercury_trace_alias.{c,h}:
trace/mercury_trace_help.{c,h}:
trace/mercury_trace_internal.{c,h}:
trace/mercury_trace_tables.{c,h}:
trace/mercury_trace_vars.{c,h}:
	Define context-specific completers.

trace/mercury_trace_help.c:
	Record all help topics in an array for use by the completer.

trace/mercury_trace_internal.c:
	Add completion information to the list of commands.
	Add a function MR_trace_command_completion_info to access
	that information.

runtime/mercury_wrapper.{c,h}
	Add a runtime option `--force-readline', which tells mdb to
	use readline even if MR_mdb_in is not a tty. This is needed
	for tests/debugger/completion. `--force-readline' is not
	documented because I'm not sure that it will work properly
	in all situations (it's fine for the test).

	Fix capitalisation in references to the Mercury User's Guide
	in error messages.

trace/mercury_trace_readline.c:
	Tell Readline to use our completer.

	Handle `--force-readline'. Disable some Readline terminal
	initialisation code which reports spurious warnings if the
	input stream is not a tty.

trace/Mmakefile:
	Add mercury_trace_completion.{c,h}.

runtime/mercury_array_macros.h:
	Define a macro MR_find_first_match, which is like MR_bsearch
	except that it finds the first match, not an arbitrary match.

runtime/mercury_memory.c:
	Handle NULL pointers in MR_copy_string();

runtime/mercury_memory.h:
	Add a macro MR_free_func which returns the address of free().
	Used where it is necessary to pass the address of MR_free().

tests/debugger/Mmakefile:
tests/debugger/completion.m:
tests/debugger/completion.exp:
tests/debugger/completion.inp:
tests/debugger/completion.inputrc:
tests/debugger/completion.sub1.m:
tests/debugger/completion.sub2.m:
tests/debugger/completion.sub2.sub3.m:
	Test case.
2002-03-06 14:35:06 +00:00
Simon Taylor
b7c4a317e9 Add MR_ prefixes to the remaining non-prefixed symbols.
Estimated hours taken: 4
Branches: main

Add MR_ prefixes to the remaining non-prefixed symbols.

This change will require all workspaces to be updated
The compiler will start generating references to MR_TRUE,
MR_bool, etc., which are not defined in the old runtime
header files.

runtime/mercury_std.h:
	Add MR_ prefixes to bool, TRUE, FALSE, max, min,
	streq, strdiff, strtest, strntest, strneq, strndiff,
	strntest, NO_RETURN.

	Delete a commented out definition of `reg'.

runtime/mercury_tags.h:
	Add an MR_ prefix to TAGBITS.

configure.in:
runtime/mercury_goto.h:
runtime/machdeps/i386_regs.h/mercury_goto.h:
	Add an MR_ prefix to PIC.

runtime/mercury_conf_param.h:
	Allow non-prefixed PIC and HIGHTAGS to be defined on
	the command line.

runtime/mercury_bootstrap.h:
	Add backwards compatibility definitions.

RESERVED_MACRO_NAMES:
	Remove the renamed macros.

compiler/export.m:
compiler/ml_code_gen.m:
	Use MR_bool rather than MR_Bool (MR_Bool is
	meant to be for references to the Mercury type
	bool__bool).

runtime/mercury_types.h:
	Add a comment the MR_Bool is for references to
	bool__bool.

*/*.c:
*/*.h:
*/*.m:
	Add MR_ prefixes.
2002-02-18 07:01:33 +00:00
Zoltan Somogyi
2b559ad054 Move the RTTI-related parts of std_util.m to three new modules in the standard
Estimated hours taken: 8
Branches: main

Move the RTTI-related parts of std_util.m to three new modules in the standard
library, and (in the case of embedded C code) to new modules in the runtime.
The main reason for this is to allow a reorganization of some of the
RTTi-related functionality without breaking backward compatibility. However,
the new arrangement should also be easier to maintain.

Use a separate type_ctor_rep for functions, to distinguish them from predicates
for RTTI code. (At one point, I thought this could avoid the need for the
change to the initialization files mentioned below. It can't, but it is a good
idea in any case.)

library/std_util.m:
	Remove the functionality moved to the new modules, and replace them
	with type equivalences and forwarding code. There are no changes in
	the meanings of the user-visible predicates, with two exceptions.

	- First, the true, equivalence-expanded names of what used to be
	  std_util:type_desc and std_util:type_ctor_desc are now
	  type_desc:type_desc and type_desc: type_ctor_desc.
	- Second, deconstructing a function term now yields
	  "<<function>>" instead of "<<predicate>>".

	The intention is that the RTTI predicates in std_util.m will continue
	to work in a backwards-compatible manner for the near future, i.e. as
	the new modules are updated, the code in std_util will be updated to
	maintain the same functionality, modulo improvements such as avoiding
	unwanted exceptions. When the RTTI functionality in the other modules
	has stabilised, the RTTI predicates in std_util.m should be marked
	obsolete.

	The exported but non-documented functionality of std_util has been
	moved to one of the new modules without forwarding code, with one
	of the moved predicates being turned into the function it should have
	been in the first place.

library/construct.m:
library/deconstruct.m:
library/type_desc.m:
	Three new modules for the code moved from std_util.m.

library/library.m:
compiler/modules.m:
	Record the names of the three new library modules.

runtime/mercury.[ch]:
compiler/mlds_to_il.m:
	Record that type_desc is now in type_desc.m, not std_util.m.

compiler/static_term.m:
	Import the deconstruct module, since we are using its undocumented
	facilities.

runtime/Mmakefile:
	Mention the two new modules.

runtime/mercury_construct.[ch]:
runtime/mercury_type_desc.[ch]:
	Two new modules holding the C functions that used to be in foreign_code
	in std_util, now using MR_ instead of ML_ prefixes, and being more
	consistent about indentation.

runtime/mercury_type_info.h:
	Add a new type_ctor_rep for functions, separate from predicates.
	(It reuses the EQUIV_VAR type_ctor_rep, which hasn't been used
	in ages.)

	Use type_ctor_reps to distinguish between the type_ctor_infos of
	pred/0 and func/0. However, to create higher order typeinfos, we
	still need to know the addresses of the type_ctor_infos for
	pred/0 and func/0, and we still need to know the address of the
	type_ctor_info for tuples to create typeinfos for tuples. Since
	these three type_ctor_infos are defined in the library,
	we cannot access them directly from the runtime. We therefore need
	to access them indirectly in the usual manner, via address_of
	variables initialized by mkinit-generated code.

library/builtin.m:
library/private_builtin.m:
library/rtti_implementation.m:
runtime/mercury.c:
runtime/mercury_mcpp.{h,cpp}:
java/TypeCtorRep.java:
	Updates to accommondate the new function type_ctor_rep.

runtime/mercury_type_info.[ch]:
	Add some functions from foreign_code in std_util that fit in best here.

runtime/mercury_ml_expand_body.h:
runtime/mercury_tabling.h:
runtime/mercury_unify_compare_body.h:
	Delete the code for handling EQUIV_VAR, and add code for handling
	functions.

runtime/mercury_init.h:
runtime/mercury_wrapper.[ch]:
	Add three variables holding the address of the type_ctor_infos
	representing functions, predicates and tuples.

util/mkinit.c:
	Fill in these three variables.

tests/general/accumulator/construct.{m,exp}:
tests/general/accumulator/deconstruct.{m,exp}:
tests/hard_coded/construct.{m,exp}:
	Rename these tests by adding a _test at the ends of their names,
	in order to avoid collisions with the names of the new standard library
	modules. The test cases have not changed, with the exception of the :-
	module declaration of course.

tests/general/accumulator/Mmakefile:
tests/general/accumulator/INTRODUCED:
tests/hard_coded/Mmakefile:
	Record the name changes.

tests/hard_coded/existential_float.exp:
	Updated the expected output to reflect that deconstructions now print
	"<<function>>" instead of "<<predicate>>" when appropriate.

tests/hard_coded/higher_order_type_manip.exp:
	Updated the expected output to reflect the new name of what used to be
	std_util:type_desc.

trace/mercury_trace_browse.c:
trace/mercury_trace_external.c:
trace/mercury_trace_help.c:
	#include type_desc.h instead of std_util.h, since the C functions
	we want to call are now defined there.

trace/mercury_trace_vars.c:
	Update to account for the movement of type_desc from std_util to
	type_desc, and ensure that we don't refer to any type_ctor_infos
	in MLDS grades.
2002-01-30 05:09:13 +00:00
Simon Taylor
b5a84362e8 Fix a bug which caused the output of mdb's help command
Estimated hours taken: 1

Fix a bug which caused the output of mdb's help command
to go to the program's output stream, not mdb's.

trace/mercury_trace_help.c:
	Fix the output stream handling.

trace/mercury_trace_browse.c:
trace/mercury_trace_util.c:
trace/mercury_trace_util.h:
	Move `MR_c_file_to_mercury_file()' to mercury_trace_util.c,
	for use by mercury_trace_help.c.
2002-01-23 05:37:09 +00:00
Zoltan Somogyi
090552c993 Make everything in the runtime use MR_ prefixes, and make the compiler
Estimated hours taken: 10

Make everything in the runtime use MR_ prefixes, and make the compiler
bootstrap with -DMR_NO_BACKWARDS_COMPAT.

runtime/mercury_*.[ch]
	Add MR_ prefixes to all functions, global variables and almost all
	macros that could pollute the namespace. The (intentional) exceptions
	are

	1. some function, variable, type and label names that already start
	   with MR_, mercury_, Mercury or _entry;
	2. some standard C macros in mercury_std.h;
	3. the macros used in autoconfiguration (since they are used in scripts
	   as well as the runtime, the MR_ prefix may not be appropriate for
	   those).

	In some cases, I deleted things instead of adding prefixes
	if the "things" were obsolete and not user visible.

runtime/mercury_bootstrap.h:
	Provide MR_-less forms of the macros for bootstrapping and for
	backward compatibility for user code.

runtime/mercury_debug.[ch]:
	Add a FILE * parameter to a function that needs it.

compiler/code_info.m:
compiler/export.m:
compiler/fact_table.m:
compiler/llds.m:
compiler/llds_out.m:
compiler/pragma_c_gen.m:
compiler/trace.m:
	Add MR_ prefixes to the C code generated by the compiler.

library/*.m:
	Add MR_ prefixes to handwritten code.

trace/mercury_trace_*.c:
util/mkinit.c:
	Add MR_ prefixes as necessary.

extras/concurrency/semaphore.m:
	Add MR_ prefixes as necessary.
2000-11-23 02:01:11 +00:00
Zoltan Somogyi
687c10f3a0 Undo my previous change at Fergus's request.
Estimated hours taken: 0.1

trace/mercury_trace_browse.c:
trace/mercury_trace_help.c:
	Undo my previous change at Fergus's request.
2000-10-16 23:07:47 +00:00
Zoltan Somogyi
126fc6f36b Add MR_TRACE_USE_HP macros around calls to MR_make_permanent, since
Estimated hours taken: 1

trace/mercury_trace_browse.c:
trace/mercury_trace_help.c:
	Add MR_TRACE_USE_HP macros around calls to MR_make_permanent, since
	on SPARCs this may be necessary to really update MR_hp.
2000-10-16 05:40:38 +00:00
Tyson Dowd
db64a3588d Add MR_ prefixes to the types used when generating C code.
Estimated hours taken: 4

Add MR_ prefixes to the types used when generating C code.
This means types such as Word, String, Bool, Float become MR_Word,
MR_String, MR_Bool, MR_Float.  Also define MR_Box for both the LLDS and
MLDS backends so we can use it uniformly.

This is very important in environments where String or Bool have already
been used as system types (for example, managed C++).  And besides, we
should do it anyway as part of the grand namespace cleanup.

I have fixed all of the uses of the non-prefixed types in the runtime
and trace directories.  I haven't done it for the library and compiler
directories yet (no promises that I will do it in future either).  But
if you see a non-prefixed type in code from now on, please consider it a
bug and fix it.

mercury_bootstrap.h contains #defines to map the non-prefixed types into
the prefixed ones.  Like many of the other namespace cleaning backwards
compatibility macros, this can be turned off with
MR_NO_BACKWARDS_COMPAT.

This shouldn't break any code, but this kind of change affects so many
things that of course there could be problems lurking in there somewhere.

If you start getting errors from the C compiler after this change is
installed, you will want to make sure you at least have the runtime
system updated so that you are getting the backwards compatibility
definitions in mercury_bootstrap.h.  Then if you continue to have
problems you can bug me about it.

compiler/export.m:
compiler/llds_out.m:
compiler/mlds_to_c.m:
	Use MR_Word, MR_Float, MR_Bool, etc when generating C.

doc/reference_manual.texi:
	Update the reference manual to talk about MR_Word, MR_String,
	MR_Char, etc.

runtime/mercury_bootstrap.h:
	Add bootstrapping typedefs.

runtime/*:
trace/*:
	Change Word, Float, Bool, Code, String, etc to
	MR_Word, MR_Float, MR_Bool, MR_Code, MR_String.
2000-08-03 06:19:31 +00:00
Fergus Henderson
bf56dfcc70 Fix a problem which stopped the `trace' directory from compiling in
Estimated hours taken: 1

Fix a problem which stopped the `trace' directory from compiling in
MLDS grades.  Also some miscellaneous cleanup of the `#include'
statements in the `trace' directory.

trace/mercury_trace_browse.c:
trace/mercury_trace_declarative.c:
trace/mercury_trace_external.c:
trace/mercury_trace_help.c:
	Change the `#include' statements that include header
	files from code in the library directory so that
	if MR_HIGHLEVEL_C is defined, the file names are
	all prefixed with "mercury.".  This is necessary
	because the MLDS back-end names those header files
	differently than the LLDS back-end.

trace/*.c:
	Arrange the `#include' statements so that they are
	grouped according to which directory the file being
	included comes from.

trace/mercury_trace_browse.h:
trace/mercury_trace_internal.h:
trace/mercury_trace_external.h:
	Add missing `#include' statements, to make these
	header files self-contained.
2000-05-15 16:37:49 +00:00
Zoltan Somogyi
ec7cae8c58 Clean up some typeinfo handling code that is only enabled in non-gc grades.
Estimated hours taken: 2

Clean up some typeinfo handling code that is only enabled in non-gc grades.

runtime/mercury_deep_copy.[ch]:
	Make the typeinfo arg of MR_make_long_lived MR_TypeInfo, not Word.

runtime/mercury_tabling_macros.h:
	Treat the typeinfo arg of MR_make_permanent, a macro that calls
	MR_make_long_lived, a MR_TypeInfo, not Word.

extras/reference/nb_reference.m:
	Treat the typeinfo arg of MR_make_long_lived a MR_TypeInfo, not Word.

library/exception.m:
library/std_util.m:
	Treat the typeinfo arg of deep_copy as MR_TypeInfo, not Word.

	Also fix some other warnings in std_util.m.

library/private_builtin.m:
	Pass the addresses of type_ctor_infos (which function as type_infos)
	to MR_TABLE_SAVE_ANSWER.

	Expect that argument to be a typeinfo, not the name of a type_ctor_info
	to take the address of.

trace/mercury_trace_browse.c:
trace/mercury_trace_external.c:
trace/mercury_trace_help.c:
	Treat the typeinfo arg of deep_copy as MR_TypeInfo, not Word.
2000-04-14 07:20:38 +00:00
Zoltan Somogyi
a7b46677c3 Add some missing MR_ prefixes.
Estimated hours taken: 0.1:

trace/mercury_trace_help.c:
	Add some missing MR_ prefixes.
2000-03-22 09:12:29 +00:00
Simon Taylor
9ba3b14098 Make all the modules in the browser library sub-modules of
Estimated hours taken: 1

Make all the modules in the browser library sub-modules of
module `mdb', to avoid link errors when users use module names
such as `parse'.

browser/Mmakefile:
browser/browser_library.m:
browser/mdb.m:
	Rename browser_library.m to mdb.m.
	Change `:- import_module' declarations to
	`:- include_module' declarations.

browser/Mmakefile:
	Remove the special case rule for `mer_browser.init' --
	it doesn't work when the file names are not the same
	as the module name. Instead, the default rule for `mdb.init'
	is used and the output is copied to `mer_browser.init'.

browser/.cvsignore:
	Rename header files, etc.

browser/*.m:
	Add a `mdb__' prefix to the names of modules in the browser library
	in `:- module' and `:- import_module' declarations.

trace/*.c:
	Rename the header files for the browser library in
	`#include' statements.

tests/hard_coded/Mmakefile:
tests/hard_coded/parse.m:
tests/hard_coded/parse.exp:
	Test case.
2000-02-04 03:45:53 +00:00
Zoltan Somogyi
bca4cb8162 Make the entire Mercury system bootstrap without backwards compatbility.
Estimated hours taken: 12

Make the entire Mercury system bootstrap without backwards compatbility.

compiler/llds_out.m:
compiler/pragma_c_gen.m:
	Add MR_ prefixes on generated code.

library/builtin.m:
library/exception.m:
library/private_builtin.m:
library/std_util.m:
library/store.m:
	Add MR_ prefixes.

runtime/mercury_deep_copy_body.h:
runtime/mercury_heap.h:
runtime/mercury_stacks.h:
runtime/mercury_string.h:
runtime/mercury_tags.h:
runtime/mercury_type_info.h:
	Add MR_ prefixes.

runtime/mercury_bootstrap.c;
runtime/mercury_engine.c;
runtime/mercury_ho_call.c;
runtime/mercury_tabling.c;
runtime/mercury_trace_base.c;
runtime/mercury_type_info.c;
runtime/mercury_wrapper.c;
	Add MR_ prefixes. In some cases, fix indentation; in functions using
	four-space indentation, convert all tabs to spaces.

trace/mercury_trace_browse.m:
trace/mercury_trace_declarative.m:
trace/mercury_trace_external.m:
trace/mercury_trace_help.m:
	Add MR_ prefixes.
1999-09-27 05:20:58 +00:00
Fergus Henderson
55cbda8153 Fix a bug in mdb (for non-conservative-gc grades) where manual memory
Estimated hours taken: 8

Fix a bug in mdb (for non-conservative-gc grades) where manual memory
allocations in the tracer and memory allocations in the Mercury code
that the tracer calls were overwriting each other, due to confusion
about whether the heap pointer was in its real reg or in its fake_reg
slot.

trace/README:
	Document some conventions for dealing with registers,

trace/mercury_trace_util.h:
	Define macros to allow easy adherence to those conventions.

trace/mercury_trace_external.c:
trace/mercury_trace_help.c:
trace/mercury_trace_internal.c:
	Use the new macros to enforce adherence to the conventions.
1998-11-06 10:35:41 +00:00
Fergus Henderson
280cbe1b45 Fix a bug: cast the second argument of MR_make_permanent() to `Word *'.
Estimated hours taken: 0.25

trace/mercury_trace_help.c:
	Fix a bug: cast the second argument of MR_make_permanent() to `Word *'.
	Without this fix, it would get warnings or errors (depending
	on whether you compile with gcc or something more strict)
	when building in non-conservative-gc grades.
1998-11-06 07:25:36 +00:00
Zoltan Somogyi
d9f2dac6e8 Before passing strings we got from mercury_trace_internal.c to
Estimated hours taken: 3

trace/mercury_trace_help.c:
	Before passing strings we got from mercury_trace_internal.c to
	Mercury code, make a copy of them on the Mercury heap. This is
	necessary because mercury_trace_internal.c will deallocated them
	soon after we return, and the Mercury code may want to hang onto
	them.
1998-11-03 04:29:41 +00:00
Zoltan Somogyi
7ab34dbdc9 Fix missing (void) in prototype.
Estimated hours taken: 0.01

trace/mercury_trace_help.h:
	Fix missing (void) in prototype.
1998-10-16 10:13:03 +00:00
Zoltan Somogyi
8a0ceb49aa This checkin has several major purposes, set out in the sections below,
Estimated hours taken: 240

This checkin has several major purposes, set out in the sections below,
all connected with the implementation of the new debugger command set.

DOCUMENT NEW DEBUG COMMAND SET

doc/user_guide.texi:
	Add a new section on the debugger. The description of the commands
	is complete, but some of the background sections, and the section
	about how to build debuggable executables, are not yet done.

	Update the documentation of the tracing options.

doc/generate_mdb_doc:
	A new shell script that automatically converts some of the new
	sections of the user guide into the online documentation of the
	debugger.

doc/mdb_categories:
	The fixed initial part of the online documentation.

doc/Mmakefile:
	Add rules for creating mdb_doc, the file that is the online
	documentation of the debugger, and for installing it together
	with mdbrc.

Mmake.common.in:
	Define INSTALL_DOC_DIR for doc/Mmakefile.

scripts/mdbrc.in:
	A debugger command script that reads in the online documentation
	and then defines some standard aliases.

configure.in:
	Define the variable that scripts/mdb.in and scripts/mdbrc.in use
	to find the right files, and get configure to perform the
	substitutions.

configure.in:
scripts/mdb:
scripts/mdb.in:
	Replace mdb with mdb.in. Mdb is now created during configuration
	from mdb.in, filling in the name of the file that contains the default
	debugger initialization commands.

util/info_to_mdb.c:
	A program that does most of the work involved in automatically
	converting user guide sections into online documentation.
	(This couldn't easily be written in sh, because sh's read
	command has no notion of pushback.)

util/Mmakefile:
	Add info_to_mdb to the list of targets.

tools/bootcheck:
	Make sure that the tests in tests/debugger are executed with an
	initialization setup that is equivalent to what users will see
	by default.

REORGANIZE TRACING OPTIONS

compiler/globals.m:
compiler/handle_options.m:
compiler/options.m:
compiler/trace.m:
	Reorganize the handling of trace levels around the new options
	--trace-internal, --trace-redo, and --trace-return.

compiler/*.m:
	Use the new ways of getting at trace levels.

tests/hard_coded/typeclasses/Mmakefile:
	s/--trace all/--trace deep/

SUPPORT RETRY

compiler/trace.m:
	After every call to MR_trace(), emit code that checks whether it
	should jump away, and if yes, performs the jump. This is used to
	implement retry. (The debugger cannot execute the jump itself
	because it is in the wrong C stack frame.)

compiler/llds.m:
compiler/continuation_info.m:
compiler/stack_layout.m:
	Modify the data structures that record information about live
	value at program points, to record the identity of each variable.
	This is necessary for the implementation of the restart command,
	since we do not want to confuse two distinct variables just because
	they have the same name. For example, a variable whose name is X
	and number is 5 is now recorded in the name array as "5:X".

	Clean up the data structure a bit, so that we don't have to store
	dummy names for values that are not variables.

compiler/*.m:
	Minor changes to conform to the data structure changes.

runtime/mercury_stack_layout.h:
	Redefine an existing macro to strip away the initial number: prefix
	from the "name" of a variable (keeping its original function on
	changed data), and add a new one to access the raw unstripped data.

runtime/mercury_init.h:
runtime/mercury_wrapper.h:
	Update the prototype of MR_trace_{fake,real}, and the type of the
	global that points to them.

runtime/mercury_layout_util.h:
	Add an extra function, MR_get_register_number, for use by retry.

USE FIXED STACK SLOTS FOR TRACE INFO

compiler/code_gen.m:
compiler/code_info.m:
compiler/live_vars.m:
compiler/trace.m:
	If execution tracing is enabled, reserve the first few stack slots
	to hold the event number of the call event, the call number, the
	call depth, the redo layout structure address (if generating redo
	events) and the from_full flag at the time of call (if we are doing
	shallow tracing). By allocating the first four of these to fixed stack
	slots, the debugger knows where to look for them without having
	to be told. It finds out the location of the fifth, if needed,
	from a new slot in the proc layout structure. (It is not possible
	to allocate all five to fixed stack slots without wasting stack space
	in some cases.)

compiler/trace.m:
	Remove from the call to MR_trace the parameters that are now in fixed
	stack slots, since MR_trace can now look them up itself.

compiler/continuation_info.m:
compiler/stack_layout.m:
	Add an extra field to the proc_layout_info. If the module is shallow
	traced, this field says which stack slot holds the saved value of
	MR_from_full. If it is not shallow traced, this field says that
	there is no such stack slot.

runtime/mercury_stack_layout.h:
	Add macros for accessing the fixed stack slots holding the event
	number of the call event, the call number, the call depth, and,
	at a redo event, the redo layout structure address.

	Support the new field in proc layouts that gives the location of the
	from-full flag (if any).

runtime/mercury_trace_base.[ch]:
trace/mercury_trace.[ch]:
	Remove the call number and call depth arguments from MR_trace
	and its avatars, since this info is now in fixed stack slots
	in every procedure that can call MR_trace. This should reduce
	the size of the executable significantly, since there are lots
	of calls to MR_trace.

runtime/mercury_init.h:
runtime/mercury_wrapper.h:
	Update the prototype of MR_trace_{fake,real}, and the type of the
	global that points to them.

START NUMBERING FRAMEVARS FROM ONE

compiler/code_info.m:
compiler/live_vars.m:
compiler/llds_out.m:
compiler/trace.m:
	Start numbering framevars from 1 internally to the compiler;
	the runtime already starts from 1. This simplifies several tasks.

ADD REDO EVENTS

compiler/trace.m:
compiler/code_gen.m:
	Before the code that executes "succeed()", emit code to push a
	a temp nondet frame whose redoip points to a label in the runtime
	that calls MR_trace for a REDO event and then fails, provided
	--trace-redo is set.

compiler/llds.m:
	Add a new code address constant, do_trace_redo_fail, which stands
	for the address in the trace system to which calls MR_trace for
	the redo event and then fails.

compiler/trace.m:
compiler/llds_out.m:
	Provided we are doing redo tracing, fill in the slot that holds
	the layout information for the REDO event.

compiler/*.m:
	Minor changes to conform to handle the new code address constant.

browser/debugger_interface.m:
	Add redo to trace_port_type.

runtime/mercury_trace_base.[ch]:
	Add a C module containing the code that calls MR_trace for REDO
	events.

ENSURE THAT INPUT ARGUMENTS ARE ALWAYS VISIBLE

compiler/trace.m:
	When generating the set of live variables at internal ports,
	the variables that are in the pre-death set of the goal into which
	we are entering may not be available. However, the variables in the
	pre-death set that are also in the resume vars set will be available,
	so now include info about them in the layout structure for the event.
	Since with tracing the non-clobbered input args are in all resume vars
	sets, this ensures that these input args will be available from all
	internal events.

compiler/code_info.m:
	Export a previously internal predicate (current_resume_point_vars)
	to make this possible.

BUG FIX: WANT RETURN LAYOUTS

compiler/globals.m:
compiler/call_gen.m:
compiler/code_info.m:
compiler/mercury_compile.m:
	Add a new pred globals__want_return_layouts, which says whether the
	compiler should generate layout structures for call returns. This pred
	centralizes the several previous copies of the test. One of those
	copies (the one in call_gen) was faulty, leading to a bug: in the
	presence of execution tracing but the absence of accurate gc,
	information about the variables that are live at the call return
	wasn't being gathered properly.

BUG FIX: #include mercury_trace_base.h

compiler/llds_out.m:
	#include mercury_trace_base.h, not mercury_trace.h, since now
	mercury_trace_base.h defines everything directly accessible from
	modules compiled with tracing.

RECAST MERCURY_TRACE_UTIL AS MERCURY_LAYOUT_UTIL

runtime/mercury_trace_util.[ch]:
runtime/mercury_layout_util.[ch]:
	Rename this module from trace_util to layout_util, since it is also
	used by the native garbage collector. Remove "trace" from the names
	of functions.

	Get rid of the global variable MR_saved_regs, and instead thread
	a pointer to this data structure through the relevant functions
	as an extra argument.

	Add a lot more documentation in the header file.

runtime/Mmakefile:
	Reflect the module rename.

runtime/*.c:
	Refer to the new module.

DELETE EASY-TO-MISUSE MACROS

runtime/mercury_stacks.h:
	Delete the based_framevar and based_detstackvar macros, since their
	continued use can lead to off-by-one errors, and the saved_framevar
	and saved_detstackvar macros, since they are no longer used.

runtime/*.c
	Update any references to any macros removed from mercury_stacks.h.

MISC RUNTIME CHANGES

runtime/mercury_trace_base.[ch]:
trace/mercury_trace*.[ch]:
	Make typedef'd names conform to the naming convention.

	Make MR_trace_call_{seqno,depth} consistently Unsigned, rather than
	sometimes Word and sometimes Unsigned.

FIX BUG: MAKE THE DEBUGGER PRINT TO STDOUT, NOT THE CURRENT STREAM

library/io.m:
	Export to C code the predicates that return the identities and types
	of stdin, stdout and stderr, as well as io__print/[34].

library/std_util.m:
	Export to C code a predicate that returns the type_info for the
	type stdutil:type_info. This type_info is required if C code
	wants to invoke make_permanent on any type_info structure,
	as the debugger does.

runtime/mercury_init.h:
	Add extern declarations for the C functions now exported from io.m.

runtime/mercury_wrapper.[ch]:
	Add new global variables to hold the addresses of these C functions.

runtime/mercury_layout_util.c:
	Use indirect calls through these global variables to print Mercury
	values, instead of lower-level code.

util/mkinit.c:
	Assign the addresses of the functions exported from io.m to the
	global variables defined in mercury_wrapper.h.

BUG FIX: STACK TRACE FUNCTIONS DEPEND ON THE LABEL TABLE

runtime/mercury_stack_trace.c:
	On entry to any of the functions exported from this module,
	ensure that the label table is loaded by calling do_init_modules.
	Without a filled-in label table, the stack trace will not be able to
	find any stack layout info.

BUG FIX: REMOVE BROWSER/*.C

configure.in:
	When removing .c files generated by the C compiler, remove those
	in the browser directory as well as the compiler, library and
	profiler directories.

IMPLEMENT NEW DEBUGGER COMMAND SET

runtime/mercury_stack_trace.[ch]:
	Factor out the code that prints the id of a procedure into a function
	of its own, so that it can also be used from the debugger, ensuring
	appearance commonality.

	Add more documentation in the header file.

trace/mercury_trace_internal.c:
	Implement the proposed command set. Command names are now words,
	and several commands now have options allowing the user to override
	the default print level or strictness of the command, or the
	invocation conditions or action of a break point. Allows control
	over command echoing and the scrolling of sequences of event reports.
	Supports aliases, command file sourcing etc. Implements the retry
	command, using the info in the fixed stack slots.

trace/mercury_trace.[ch]:
	Extend the trace controls to support the new functionalities
	required by the new debugger language, which are print levels,
	variable-strictness commands, a more flexible finish command,
	and the retry command.

	Pass the command structure to MR_trace_event_report, since
	the user can now forcibly terminate the scrolling of reports.

trace/mercury_trace_alias.[ch]:
	New module to manage aliases for the debugger.

trace/mercury_trace_help.[ch]:
	New module to interface to browser/help.m.

trace/mercury_trace_spy.[ch]:
	New module to manage break points. The test of whether an event
	matches a break point is now much more efficient than before.
	The new module also allows several breakpoints with different
	actions and different invocation conditions (e.g. all ports,
	entry port, interface ports or specific (possibly internal) port)
	to be defined on the same procedure.

trace/mercury_trace_tables.[ch]:
	New module to manage a table of the debuggable modules, in which
	each such module is linked to the list of the layouts of all the
	procedures defined in that module. This information allows the
	debugger to turn the name of a predicate/function (possibly together
	with its arity and mode number) into the procedure layout structure
	required by the spy point module. Eventually it may also be useful
	in supplying lists of identifiers for command line completion.

	Modules for which no stack layout information is available will
	not be included in the table, since do_init_modules will not
	register any labels for them in the label table.

trace/Mmakefile:
	Mention the new files.

runtime/mercury_array_macros.h:
	A new file holding macros that can be useful in more than one module.

runtime/Mmakefile:
	Mention the new file.

runtime/mercury_conf.h.in:
	Mention a new configuration macro, MR_CANNOT_USE_STRUCTURE_ASSIGNMENT,
	used by runtime/mercury_array_macros.h.

configure.in:
	Find out whether we need to define MR_CANNOT_USE_STRUCTURE_ASSIGNMENT.

ADD TRACE DEPTH HISTOGRAMS

runtime/mercury_conf_param.h:
	Document MR_TRACE_HISTOGRAM.

runtime/mercury_trace_base.[ch]:
	Define the data structures for the histogram, and print the histogram
	when a traced program exits if MR_TRACE_HISTOGRAM is set.

trace/mercury_trace.[ch]:
	If MR_TRACE_HISTOGRAM is defined, record a count of the number of
	events at each depth. This information can help us evaluate space-time
	tradeoffs.

FACTOR OUT SHELL CODE HANDLING GRADE IMPLICATIONS

scripts/final_grade_options.sh-subr:
	A new file to contain any code that implements implications between
	grade flags; currently implements the implication debug -> use trail.

scripts/mgnuc.in:
scripts/ml.in:
	Replace the code that is now in final_grade_options.sh-subr with
	an inclusion of final_grade_options.sh-subr.

configure.in:
	Handle final_grade_options.sh-subr as {init,parse}_grade_options.sh-subr
	are handled.

SIMPLIFY THE MAINTAINANCE OF CONSISTENCY BETWEEN DEBUGGER CODE AND DOCUMENTATION

doc/Mmakefile:
	Add rules for creating mdb_command_list, a C code fragment
	that can included manually in trace/mercury_trace_internal.c
	to supply the list of valid commands, and mdb_command_test.inp,
	which is a list of invalid invocations of debugger commands,
	which tests whether the help message for such invocations
	can be located as expected.

doc/generate_mdb_command_list:
doc/generate_mdb_command_test:
	Awk scripts to create mdb_command_list and mdb_command_test.inp
	respectively from mdb_doc.

tools/bootcheck:
	Copy mdb_command_test.inp from doc to tests/debugger.

tests/debugger/Mmakefile:
	Add a new test that checks whether we get an internal error, unable
	to locate the right help node, for each invalid command invocation in
	mdb_command_test.inp.

UPDATE TEST CASES

tests/debugger/Mmakefile:
	Reenable queens. Conform to the new set of options.

tests/debugger/*.inp:
tests/debugger/*.exp:
	Update the inputs and expected outputs of the debugger test cases
	to use the new command set and output formats.
1998-10-16 06:20:28 +00:00