No subject
Erwan Jahier
Erwan.Jahier at irisa.fr
Tue Feb 9 19:42:00 AEDT 1999
I sent this mail yesterday but it seems we have some problems with
mails here at the moment. So you may receive it again one of these days.
_______________________________________________________________________
Estimated hours taken: 6
This change implement the retry command for the external debugger.
trace/mercury_trace.[ch]:
trace/mercury_trace_internal.[ch]:
Move MR_trace_retry() and MR_trace_find_input_arg() from
mercury_trace_internal.c to mercury_trace.c since they are also needed
in the external debugger.
MR_trace_retry() now returns TRUE if the retry proceeded correctly
and FALSE otherwise.
trace/mercury_trace_internal.h:
trace/mercury_trace.h:
Move the definition of the type MR_Event_Details from
mercury_trace_internal.h to mercury_trace.h since both are also
needed in the external debugger.
Idem for the constant MR_INIT_ARG_COUNT.
trace/mercury_trace.c:
trace/mercury_trace_external.[ch]:
MR_trace_external() now returns a code address to jump in.
Pass the integer max_mr_num in argument of MR_trace_external() since
it is needed by MR_trace_retry().
trace/mercury_trace_external.c:
Implement the retry command in MR_trace_event_external().
browse/debugger_interface.m:
Add support for the retry port.
Make all the lines fits in 80 colums.
Index: trace/mercury_trace.c
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace.c,v
retrieving revision 1.3
diff -u -r1.3 mercury_trace.c
--- mercury_trace.c 1998/12/14 16:05:17 1.3
+++ mercury_trace.c 1999/02/09 00:13:28
@@ -1,5 +1,5 @@
/*
-** Copyright (C) 1997-1998 The University of Melbourne.
+** Copyright (C) 1997-1999 The University of Melbourne.
** This file may only be copied under the terms of the GNU Library General
** Public License - see the file COPYING.LIB in the Mercury distribution.
*/
@@ -246,9 +246,8 @@
fatal_error("reporting event for external debugger");
}
- MR_trace_event_external(cmd, layout, saved_regs,
- port, seqno, depth, path);
- jumpaddr = NULL;
+ jumpaddr = MR_trace_event_external(cmd, layout, saved_regs,
+ port, seqno, depth, path, &max_mr_num);
} else {
jumpaddr = MR_trace_event_internal(cmd, interactive,
layout, saved_regs, port, seqno,
@@ -280,4 +279,156 @@
MR_saved_global_hp(saved_regs) = MR_global_hp;
MR_copy_saved_regs_to_regs(max_mr_num, saved_regs);
return jumpaddr;
+}
+
+extern bool
+MR_trace_retry(const MR_Stack_Layout_Label *this_label, Word *saved_regs,
+ MR_Event_Details *event_details, int seqno, int depth,
+ int *max_mr_num, Code **jumpaddr)
+{
+ const MR_Stack_Layout_Entry *entry;
+ const MR_Stack_Layout_Label *call_label;
+ const MR_Stack_Layout_Vars *input_args;
+ Word *args;
+ int arg_max;
+ int arg_num;
+ Word arg_value;
+ int i;
+ bool succeeded;
+
+ entry = this_label->MR_sll_entry;
+ call_label = entry->MR_sle_call_label;
+
+ if (call_label->MR_sll_var_count < 0) {
+ printf("Cannot perform retry because information about "
+ "the input arguments is not available.\n");
+ return FALSE;
+ }
+
+ input_args = &call_label->MR_sll_var_info;
+
+ /*
+ ** With the Boehm collector, args need not be considered a root,
+ ** since its contents are just copies of values from elsewhere,
+ ** With the native collector, it need not be considered a root
+ ** because its lifetime spans only this function, in which
+ ** no native garbage collection can be triggered.
+ */
+
+ args = NULL;
+ arg_max = 0;
+
+ for (i = 0; i < call_label->MR_sll_var_count; i++) {
+ arg_value = MR_trace_find_input_arg(this_label, saved_regs,
+ input_args->MR_slvs_names[i], &succeeded);
+
+ if (! succeeded) {
+ printf("Cannot perform retry because the values of "
+ "some input arguments are missing.\n");
+ return FALSE;
+ }
+
+ arg_num = MR_get_register_number(
+ input_args->MR_slvs_pairs[i].MR_slv_locn);
+ if (arg_num > 0) {
+ MR_ensure_big_enough(arg_num, arg, Word,
+ MR_INIT_ARG_COUNT);
+ args[arg_num] = arg_value;
+ } else {
+ fatal_error("illegal location for input argument");
+ }
+ }
+
+ MR_trace_call_seqno = seqno - 1;
+ MR_trace_call_depth = depth - 1;
+
+ if (MR_DETISM_DET_STACK(entry->MR_sle_detism)) {
+ MR_Live_Lval location;
+ Word *this_frame;
+
+ /*
+ ** We are at a final port, so both curfr and maxfr
+ ** must already have been reset to their original values.
+ ** We only need to set up the succip register for the "call",
+ ** and then remove this frame from the det stack.
+ */
+
+ location = entry->MR_sle_succip_locn;
+ if (MR_LIVE_LVAL_TYPE(location) != MR_LVAL_TYPE_STACKVAR) {
+ fatal_error("illegal location for stored succip");
+ }
+
+ this_frame = MR_saved_sp(saved_regs);
+ MR_saved_succip(saved_regs) = (Word *)
+ MR_based_stackvar(this_frame,
+ MR_LIVE_LVAL_NUMBER(location));
+ MR_saved_sp(saved_regs) -= entry->MR_sle_stack_slots;
+ MR_trace_event_number = MR_event_num_stackvar(this_frame);
+ } else {
+ Word *this_frame;
+
+ /*
+ ** We are at a final port, so sp must already have been reset
+ ** to its original value. We only need to set up the succip
+ ** and curfr registers for the "call", and remove this frame,
+ ** and any other frames above it, from the nondet stack.
+ */
+
+ this_frame = MR_saved_curfr(saved_regs);
+
+ MR_saved_succip(saved_regs) = MR_succip_slot(this_frame);
+ MR_saved_curfr(saved_regs) = MR_succfr_slot(this_frame);
+ MR_saved_maxfr(saved_regs) = MR_prevfr_slot(this_frame);
+ MR_trace_event_number = MR_event_num_framevar(this_frame);
+ }
+
+ for (i = 1; i < arg_max; i++) {
+ saved_reg(saved_regs, i) = args[i];
+ }
+
+ if (args != NULL) {
+ free(args);
+ }
+
+ *max_mr_num = max(*max_mr_num, arg_max);
+ *jumpaddr = entry->MR_sle_code_addr;
+
+ /*
+ ** Overriding MR_trace_call_seqno etc is not enough, because
+ ** we will restore the values of those variables later. We must
+ ** also override the saved copies.
+ */
+
+ event_details->MR_call_seqno = MR_trace_call_seqno;
+ event_details->MR_call_depth = MR_trace_call_depth;
+ event_details->MR_event_number = MR_trace_event_number;
+
+ return TRUE;
+}
+
+
+extern Word
+MR_trace_find_input_arg(const MR_Stack_Layout_Label *label, Word *saved_regs,
+ const char *name, bool *succeeded)
+{
+ const MR_Stack_Layout_Vars *vars;
+ int i;
+
+ vars = &label->MR_sll_var_info;
+ if (vars->MR_slvs_names == NULL) {
+ *succeeded = FALSE;
+ return 0;
+ }
+
+ for (i = 0; i < label->MR_sll_var_count; i++) {
+ if (streq(vars->MR_slvs_names[i], name)) {
+ return MR_lookup_live_lval_base(
+ vars->MR_slvs_pairs[i].MR_slv_locn, saved_regs,
+ MR_saved_sp(saved_regs),
+ MR_saved_curfr(saved_regs), succeeded);
+ }
+ }
+
+ *succeeded = FALSE;
+ return 0;
}
Index: trace/mercury_trace.h
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace.h,v
retrieving revision 1.3
diff -u -r1.3 mercury_trace.h
--- mercury_trace.h 1998/12/14 16:05:19 1.3
+++ mercury_trace.h 1999/02/09 00:13:28
@@ -1,5 +1,5 @@
/*
-** Copyright (C) 1997-1998 The University of Melbourne.
+** Copyright (C) 1997-1999 The University of Melbourne.
** This file may only be copied under the terms of the GNU Library General
** Public License - see the file COPYING.LIB in the Mercury distribution.
*/
@@ -20,6 +20,22 @@
#ifndef MERCURY_TRACE_H
#define MERCURY_TRACE_H
+
+typedef struct MR_Event_Details_Struct {
+ int MR_call_seqno;
+ int MR_call_depth;
+ int MR_event_number;
+} MR_Event_Details;
+
+/* The initial size of arrays of argument values. */
+#define MR_INIT_ARG_COUNT 20
+
+extern bool MR_trace_retry(const MR_Stack_Layout_Label *layout,
+ Word *saved_regs, MR_Event_Details *event_details,
+ int seqno, int depth, int *max_mr_num,
+ Code **jumpaddr);
+extern Word MR_trace_find_input_arg(const MR_Stack_Layout_Label *label,
+ Word *saved_regs, const char *name, bool *succeeded);
/*
** MR_trace_cmd says what mode the tracer is in, i.e. how events should be
Index: trace/mercury_trace_external.c
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace_external.c,v
retrieving revision 1.5
diff -u -r1.5 mercury_trace_external.c
--- mercury_trace_external.c 1998/11/08 23:11:32 1.5
+++ mercury_trace_external.c 1999/02/09 00:13:29
@@ -1,5 +1,5 @@
/*
-** Copyright (C) 1998 The University of Melbourne.
+** Copyright (C) 1998-1999 The University of Melbourne.
** This file may only be copied under the terms of the GNU Library General
** Public License - see the file COPYING.LIB in the Mercury distribution.
*/
@@ -55,8 +55,10 @@
= 7, /* report data for
current_live_var_names query */
MR_REQUEST_CURRENT_NTH_VAR
- = 8 /* report data for
+ = 8, /* report data for
current_nth_var query */
+ MR_REQUEST_RETRY = 9 /* restart the execution to the call
+ port of the current event */
} MR_debugger_request_type;
@@ -190,8 +192,8 @@
unix_address.sun_family = AF_UNIX;
strcpy(unix_address.sun_path, unix_socket);
addr = (struct sockaddr *) &unix_address;
- len = SUN_LEN(&unix_address);
- } else {
+ len = sizeof(&unix_address);
+ } else {
char hostname[255];
char port_string[255];
unsigned short port;
@@ -202,7 +204,8 @@
** It should be in the format "<hostname> <port>",
** where <hostname> is numeric (e.g. "123.456.78.90").
*/
- if (sscanf(inet_socket, "%254s %254s", hostname, port_string)
+
+ if (sscanf(inet_socket, "%254s %254s", hostname, port_string)
!= 2)
{
fatal_error("MERCURY_DEBUGGER_INET_SOCKET invalid");
@@ -321,16 +324,27 @@
*/
}
-void
+Code *
MR_trace_event_external(MR_Trace_Cmd_Info *cmd,
const MR_Stack_Layout_Label *layout, Word *saved_regs,
- MR_Trace_Port port, Unsigned seqno, Unsigned depth, const char *path)
+ MR_Trace_Port port, Unsigned seqno, Unsigned depth, const char *path,
+ int *max_mr_num)
{
- static bool searching = FALSE;
- static Word search_data;
- Word debugger_request;
- Integer debugger_request_type, live_var_number;
- Word var_list, var_names_list, type_list, var;
+ static bool searching = FALSE;
+ static Word search_data;
+ Integer debugger_request_type;
+ Integer live_var_number;
+ Word debugger_request;
+ Word var_list;
+ Word var_names_list;
+ Word type_list;
+ Word var;
+ Code *jumpaddr= NULL;
+ MR_Event_Details event_details;
+
+ event_details.MR_call_seqno = MR_trace_call_seqno;
+ event_details.MR_call_depth = MR_trace_call_depth;
+ event_details.MR_event_number = MR_trace_event_number;
if (searching) {
/* XXX should also pass registers here,
@@ -342,7 +356,7 @@
MR_send_message_to_socket("forward_move_match_found");
searching = FALSE;
} else {
- return;
+ return jumpaddr;
}
}
@@ -362,7 +376,7 @@
}
search_data = debugger_request;
searching = TRUE;
- return;
+ return jumpaddr;
case MR_REQUEST_CURRENT_LIVE_VAR_NAMES:
if (MR_debug_socket) {
@@ -408,15 +422,46 @@
depth, path);
break;
+ case MR_REQUEST_RETRY:
+ if (MR_debug_socket) {
+ fprintf(stderr, "\nMercury runtime: "
+ "REQUEST_RETRY\n");
+ }
+ if (MR_trace_retry(layout, saved_regs,
+ &event_details, seqno, depth,
+ max_mr_num, &jumpaddr))
+
+ {
+ MR_send_message_to_socket("ok");
+ cmd->MR_trace_cmd = MR_CMD_GOTO;
+ cmd->MR_trace_stop_event =
+ MR_trace_event_number + 1;
+ return jumpaddr;
+ }
+ else
+ {
+ MR_send_message_to_socket("retry_failed");
+ }
+ break;
+
case MR_REQUEST_NO_TRACE:
cmd->MR_trace_cmd = MR_CMD_TO_END;
- return;
+ return jumpaddr;
default:
fatal_error("unexpected request read from "
"debugger socket");
}
}
+
+ cmd->MR_trace_must_check = (! cmd->MR_trace_strict) ||
+ (cmd->MR_trace_print_level != MR_PRINT_LEVEL_NONE);
+
+ MR_trace_call_seqno = event_details.MR_call_seqno;
+ MR_trace_call_depth = event_details.MR_call_depth;
+ MR_trace_event_number = event_details.MR_event_number;
+
+ return jumpaddr;
}
@@ -610,7 +655,7 @@
}
MR_TRACE_CALL_MERCURY(
- type_info_string = MR_type_name(type_info);
+ type_info_string = ML_type_name(type_info);
);
MR_TRACE_USE_HP(
type_list = list_cons(type_info_string, type_list);
Index: trace/mercury_trace_external.h
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace_external.h,v
retrieving revision 1.2
diff -u -r1.2 mercury_trace_external.h
--- mercury_trace_external.h 1998/10/16 06:20:15 1.2
+++ mercury_trace_external.h 1999/02/09 00:13:29
@@ -1,5 +1,5 @@
/*
-** Copyright (C) 1998 The University of Melbourne.
+** Copyright (C) 1998-1999 The University of Melbourne.
** This file may only be copied under the terms of the GNU Library General
** Public License - see the file COPYING.LIB in the Mercury distribution.
*/
@@ -11,10 +11,10 @@
extern void MR_trace_init_external(void);
extern void MR_trace_final_external(void);
-extern void MR_trace_event_external(MR_Trace_Cmd_Info *cmd,
+extern Code *MR_trace_event_external(MR_Trace_Cmd_Info *cmd,
const MR_Stack_Layout_Label *layout,
Word *saved_regs, MR_Trace_Port port, Unsigned seqno,
- Unsigned depth, const char *path);
+ Unsigned depth, const char *path, int *max_mr_num);
#endif /* MR_USE_EXTERNAL_DEBUGGER */
Index: trace/mercury_trace_internal.c
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace_internal.c,v
retrieving revision 1.23
diff -u -r1.23 mercury_trace_internal.c
--- mercury_trace_internal.c 1999/02/04 20:42:10 1.23
+++ mercury_trace_internal.c 1999/02/09 00:13:35
@@ -33,9 +33,6 @@
/* The initial size of the spy points table. */
#define MR_INIT_SPY_POINTS 10
-/* The initial size of arrays of argument values. */
-#define MR_INIT_ARG_COUNT 20
-
/* The initial size of arrays of words. */
#define MR_INIT_WORD_COUNT 20
@@ -165,8 +162,6 @@
static bool MR_trace_options_confirmed(bool *confirmed, char ***words,
int *word_count, const char *cat, const char *item);
static void MR_trace_usage(const char *cat, const char *item);
-static Word MR_trace_find_input_arg(const MR_Stack_Layout_Label *label,
- Word *saved_regs, const char *name, bool *succeeded);
static void MR_trace_internal_add_spy_point(MR_Spy_When when,
MR_Spy_Action action,
const MR_Stack_Layout_Entry *entry,
@@ -1518,160 +1513,6 @@
item, item);
}
-void
-MR_trace_retry(const MR_Stack_Layout_Label *this_label, Word *saved_regs,
- MR_Event_Details *event_details, int seqno, int depth,
- int *max_mr_num, Code **jumpaddr)
-{
- const MR_Stack_Layout_Entry *entry;
- const MR_Stack_Layout_Label *call_label;
- const MR_Stack_Layout_Vars *input_args;
- Word *args;
- int arg_max;
- int arg_num;
- Word arg_value;
- int i;
- bool succeeded;
-
- entry = this_label->MR_sll_entry;
- call_label = entry->MR_sle_call_label;
-
- if (call_label->MR_sll_var_count < 0) {
- fflush(MR_mdb_out);
- fprintf(MR_mdb_err,
- "Cannot perform retry, because information about "
- "the input arguments is not available.\n");
- return;
- }
-
- input_args = &call_label->MR_sll_var_info;
-
- /*
- ** With the Boehm collector, args need not be considered a root,
- ** since its contents are just copies of values from elsewhere,
- ** With the native collector, it need not be considered a root
- ** because its lifetime spans only this function, in which
- ** no native garbage collection can be triggered.
- */
-
- args = NULL;
- arg_max = 0;
-
- for (i = 0; i < call_label->MR_sll_var_count; i++) {
- arg_value = MR_trace_find_input_arg(this_label, saved_regs,
- input_args->MR_slvs_names[i], &succeeded);
-
- if (! succeeded) {
- fflush(MR_mdb_out);
- fprintf(MR_mdb_err,
- "Cannot perform retry because the values of "
- "some input arguments are missing.\n");
- return;
- }
-
- arg_num = MR_get_register_number(
- input_args->MR_slvs_pairs[i].MR_slv_locn);
- if (arg_num > 0) {
- MR_ensure_big_enough(arg_num, arg, Word,
- MR_INIT_ARG_COUNT);
- args[arg_num] = arg_value;
- } else {
- fatal_error("illegal location for input argument");
- }
- }
-
- MR_trace_call_seqno = seqno - 1;
- MR_trace_call_depth = depth - 1;
-
- MR_trace_from_full = TRUE;
-
- if (MR_DETISM_DET_STACK(entry->MR_sle_detism)) {
- MR_Live_Lval location;
- Word *this_frame;
-
- /*
- ** We are at a final port, so both curfr and maxfr
- ** must already have been reset to their original values.
- ** We only need to set up the succip register for the "call",
- ** and then remove this frame from the det stack.
- */
-
- location = entry->MR_sle_succip_locn;
- if (MR_LIVE_LVAL_TYPE(location) != MR_LVAL_TYPE_STACKVAR) {
- fatal_error("illegal location for stored succip");
- }
-
- this_frame = MR_saved_sp(saved_regs);
- MR_saved_succip(saved_regs) = (Word *)
- MR_based_stackvar(this_frame,
- MR_LIVE_LVAL_NUMBER(location));
- MR_saved_sp(saved_regs) -= entry->MR_sle_stack_slots;
- MR_trace_event_number = MR_event_num_stackvar(this_frame);
- } else {
- Word *this_frame;
-
- /*
- ** We are at a final port, so sp must already have been reset
- ** to its original value. We only need to set up the succip
- ** and curfr registers for the "call", and remove this frame,
- ** and any other frames above it, from the nondet stack.
- */
-
- this_frame = MR_saved_curfr(saved_regs);
-
- MR_saved_succip(saved_regs) = MR_succip_slot(this_frame);
- MR_saved_curfr(saved_regs) = MR_succfr_slot(this_frame);
- MR_saved_maxfr(saved_regs) = MR_prevfr_slot(this_frame);
- MR_trace_event_number = MR_event_num_framevar(this_frame);
- }
-
- for (i = 1; i < arg_max; i++) {
- saved_reg(saved_regs, i) = args[i];
- }
-
- if (args != NULL) {
- free(args);
- }
-
- *max_mr_num = max(*max_mr_num, arg_max);
- *jumpaddr = entry->MR_sle_code_addr;
-
- /*
- ** Overriding MR_trace_call_seqno etc is not enough, because
- ** we will restore the values of those variables later. We must
- ** also override the saved copies.
- */
-
- event_details->MR_call_seqno = MR_trace_call_seqno;
- event_details->MR_call_depth = MR_trace_call_depth;
- event_details->MR_event_number = MR_trace_event_number;
-}
-
-static Word
-MR_trace_find_input_arg(const MR_Stack_Layout_Label *label, Word *saved_regs,
- const char *name, bool *succeeded)
-{
- const MR_Stack_Layout_Vars *vars;
- int i;
-
- vars = &label->MR_sll_var_info;
- if (vars->MR_slvs_names == NULL) {
- *succeeded = FALSE;
- return 0;
- }
-
- for (i = 0; i < label->MR_sll_var_count; i++) {
- if (streq(vars->MR_slvs_names[i], name)) {
- return MR_lookup_live_lval_base(
- vars->MR_slvs_pairs[i].MR_slv_locn, saved_regs,
- MR_saved_sp(saved_regs),
- MR_saved_curfr(saved_regs), succeeded);
- }
- }
-
- *succeeded = FALSE;
- return 0;
-}
static void
MR_trace_internal_add_spy_point(MR_Spy_When when, MR_Spy_Action action,
Index: trace/mercury_trace_internal.h
===================================================================
RCS file: /home/mercury1/repository/mercury/trace/mercury_trace_internal.h,v
retrieving revision 1.4
diff -u -r1.4 mercury_trace_internal.h
--- mercury_trace_internal.h 1999/01/11 03:52:33 1.4
+++ mercury_trace_internal.h 1999/02/09 00:13:35
@@ -10,12 +10,6 @@
#include "mercury_types.h"
#include "mercury_trace.h"
-typedef struct MR_Event_Details_Struct {
- int MR_call_seqno;
- int MR_call_depth;
- int MR_event_number;
-} MR_Event_Details;
-
#ifdef MR_USE_DECLARATIVE_DEBUGGER
/*
@@ -48,10 +42,6 @@
int seqno, int depth,
const char *path, int *max_mr_num);
-extern void MR_trace_retry(const MR_Stack_Layout_Label *layout,
- Word *saved_regs, MR_Event_Details *event_details,
- int seqno, int depth, int *max_mr_num,
- Code **jumpaddr);
extern Code *MR_trace_event_internal_report(MR_Trace_Cmd_Info *cmd,
const MR_Stack_Layout_Label *layout, Word *saved_regs,
Index: browser/debugger_interface.m
===================================================================
RCS file: /home/mercury1/repository/mercury/browser/debugger_interface.m,v
retrieving revision 1.4
diff -u -r1.4 debugger_interface.m
--- debugger_interface.m 1998/12/14 16:05:02 1.4
+++ debugger_interface.m 1999/02/09 00:13:36
@@ -1,6 +1,5 @@
-
%-----------------------------------------------------------------------------%
-% Copyright (C) 1998 The University of Melbourne.
+% Copyright (C) 1998-1999 The University of Melbourne.
% This file may only be copied under the terms of the GNU Library General
% Public License - see the file COPYING.LIB in the Mercury distribution.
%-----------------------------------------------------------------------------%
@@ -18,7 +17,10 @@
:- interface.
% This module exports the following C functions:
-% ML_DI_output_current
+% ML_DI_output_current_slots
+% ML_DI_output_current_vars
+% ML_DI_output_current_nth_var
+% ML_DI_output_current_live_var_names
% ML_DI_found_match
% ML_DI_read_request_from_socket
% These are used by runtime/mercury_trace_external.c.
@@ -109,13 +111,16 @@
% A 'current_nth_var' request instructs the debuggee to
% retrieve the specified live variable.
; current_nth_var(int)
- ; abort_prog
% just abort the program
- ; no_trace
+ ; abort_prog
% stop tracing, and run the program to completion
- ; error(string)
+ ; no_trace
+ % restarts execution at the call port of the call
+ % corresponding to the current event
+ ; retry
% something went wrong when trying to get the
% next request
+ ; error(string)
.
:- type event_number == int.
@@ -206,7 +211,8 @@
% output_current_vars "ML_DI_output_current_vars":
% send to the debugger the list of the live variables of the current event.
-:- pragma export(output_current_vars(in, in, in, di, uo), "ML_DI_output_current_vars").
+:- pragma export(output_current_vars(in, in, in, di, uo),
+ "ML_DI_output_current_vars").
:- pred output_current_vars(list(univ), list(string),
io__output_stream, io__state, io__state).
@@ -223,7 +229,8 @@
% output_current_nth_var "ML_DI_output_current_nth_var":
% send to the debugger the requested live variable of the current event.
-:- pragma export(output_current_nth_var(in, in, di, uo), "ML_DI_output_current_nth_var").
+:- pragma export(output_current_nth_var(in, in, di, uo),
+ "ML_DI_output_current_nth_var").
:- pred output_current_nth_var(univ, io__output_stream, io__state, io__state).
:- mode output_current_nth_var(in, in, di, uo) is det.
@@ -375,6 +382,7 @@
classify_request(error(_), 6).
classify_request(current_live_var_names, 7).
classify_request(current_nth_var(_), 8).
+classify_request(retry, 9).
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