-/* Debugging extensions for Guile
- * Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003 Free Software Foundation
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-
-#include "libguile/_scm.h"
-#include "libguile/async.h"
-#include "libguile/eval.h"
-#include "libguile/list.h"
-#include "libguile/stackchk.h"
-#include "libguile/throw.h"
-#include "libguile/macros.h"
-#include "libguile/smob.h"
-#include "libguile/procprop.h"
-#include "libguile/srcprop.h"
-#include "libguile/alist.h"
-#include "libguile/continuations.h"
-#include "libguile/strports.h"
-#include "libguile/read.h"
-#include "libguile/feature.h"
-#include "libguile/dynwind.h"
-#include "libguile/modules.h"
-#include "libguile/ports.h"
-#include "libguile/root.h"
-#include "libguile/fluids.h"
-#include "libguile/objects.h"
-
-#include "libguile/validate.h"
-#include "libguile/debug.h"
-\f
-
-/* {Run time control of the debugging evaluator}
- */
-
-SCM_DEFINE (scm_debug_options, "debug-options-interface", 0, 1, 0,
- (SCM setting),
- "Option interface for the debug options. Instead of using\n"
- "this procedure directly, use the procedures @code{debug-enable},\n"
- "@code{debug-disable}, @code{debug-set!} and @code{debug-options}.")
-#define FUNC_NAME s_scm_debug_options
-{
- SCM ans;
-
- scm_frame_begin (0);
- scm_frame_critical_section (SCM_BOOL_F);
-
- ans = scm_options (setting, scm_debug_opts, SCM_N_DEBUG_OPTIONS, FUNC_NAME);
- if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE))
- {
- scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, FUNC_NAME);
- SCM_OUT_OF_RANGE (1, setting);
- }
- SCM_RESET_DEBUG_MODE;
- scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P;
- scm_debug_eframe_size = 2 * SCM_N_FRAMES;
-
- scm_frame_end ();
- return ans;
-}
-#undef FUNC_NAME
-
-static void
-with_traps_before (void *data)
-{
- int *trap_flag = data;
- *trap_flag = SCM_TRAPS_P;
- SCM_TRAPS_P = 1;
-}
-
-static void
-with_traps_after (void *data)
-{
- int *trap_flag = data;
- SCM_TRAPS_P = *trap_flag;
-}
-
-static SCM
-with_traps_inner (void *data)
-{
- SCM thunk = SCM_PACK ((scm_t_bits) data);
- return scm_call_0 (thunk);
-}
-
-SCM_DEFINE (scm_with_traps, "with-traps", 1, 0, 0,
- (SCM thunk),
- "Call @var{thunk} with traps enabled.")
-#define FUNC_NAME s_scm_with_traps
-{
- int trap_flag;
- SCM_VALIDATE_THUNK (1, thunk);
- return scm_internal_dynamic_wind (with_traps_before,
- with_traps_inner,
- with_traps_after,
- (void *) SCM_UNPACK (thunk),
- &trap_flag);
-}
-#undef FUNC_NAME
-
-\f
-
-SCM_SYMBOL (scm_sym_procname, "procname");
-SCM_SYMBOL (scm_sym_dots, "...");
-SCM_SYMBOL (scm_sym_source, "source");
-
-/* {Memoized Source}
- */
-
-scm_t_bits scm_tc16_memoized;
-
-static int
-memoized_print (SCM obj, SCM port, scm_print_state *pstate)
-{
- int writingp = SCM_WRITINGP (pstate);
- scm_puts ("#<memoized ", port);
- SCM_SET_WRITINGP (pstate, 1);
- scm_iprin1 (SCM_MEMOIZED_EXP (obj), port, pstate);
- SCM_SET_WRITINGP (pstate, writingp);
- scm_putc ('>', port);
- return 1;
-}
-
-SCM_DEFINE (scm_memoized_p, "memoized?", 1, 0, 0,
- (SCM obj),
- "Return @code{#t} if @var{obj} is memoized.")
-#define FUNC_NAME s_scm_memoized_p
-{
- return scm_from_bool(SCM_MEMOIZEDP (obj));
-}
-#undef FUNC_NAME
-
-SCM
-scm_make_memoized (SCM exp, SCM env)
-{
- /* *fixme* Check that env is a valid environment. */
- register SCM z, ans;
- SCM_CRITICAL_SECTION_START;
- SCM_NEWSMOB (z, SCM_UNPACK (exp), SCM_UNPACK (env));
- SCM_NEWSMOB (ans, scm_tc16_memoized, SCM_UNPACK (z));
- SCM_CRITICAL_SECTION_END;
- return ans;
-}
-
-#ifdef GUILE_DEBUG
-/*
- * Some primitives for construction of memoized code
- *
- * - procedure: memcons CAR CDR [ENV]
- *
- * Construct a pair, encapsulated in a memoized object.
- *
- * The CAR and CDR can be either normal or memoized. If ENV isn't
- * specified, the top-level environment of the current module will
- * be assumed. All environments must match.
- *
- * - procedure: make-iloc FRAME BINDING CDRP
- *
- * Return an iloc referring to frame no. FRAME, binding
- * no. BINDING. If CDRP is non-#f, the iloc is referring to a
- * frame consisting of a single pair, with the value stored in the
- * CDR.
- *
- * - procedure: iloc? OBJECT
- *
- * Return #t if OBJECT is an iloc.
- *
- * - procedure: mem->proc MEMOIZED
- *
- * Construct a closure from the memoized lambda expression MEMOIZED
- *
- * WARNING! The code is not copied!
- *
- * - procedure: proc->mem CLOSURE
- *
- * Turn the closure CLOSURE into a memoized object.
- *
- * WARNING! The code is not copied!
- *
- * - constant: SCM_IM_AND
- * - constant: SCM_IM_BEGIN
- * - constant: SCM_IM_CASE
- * - constant: SCM_IM_COND
- * - constant: SCM_IM_DO
- * - constant: SCM_IM_IF
- * - constant: SCM_IM_LAMBDA
- * - constant: SCM_IM_LET
- * - constant: SCM_IM_LETSTAR
- * - constant: SCM_IM_LETREC
- * - constant: SCM_IM_OR
- * - constant: SCM_IM_QUOTE
- * - constant: SCM_IM_SET
- * - constant: SCM_IM_DEFINE
- * - constant: SCM_IM_APPLY
- * - constant: SCM_IM_CONT
- * - constant: SCM_IM_DISPATCH
- */
-
-#include "libguile/variable.h"
-#include "libguile/procs.h"
-
-SCM_DEFINE (scm_memcons, "memcons", 2, 1, 0,
- (SCM car, SCM cdr, SCM env),
- "Return a new memoized cons cell with @var{car} and @var{cdr}\n"
- "as members and @var{env} as the environment.")
-#define FUNC_NAME s_scm_memcons
-{
- if (SCM_MEMOIZEDP (car))
- {
- /*fixme* environments may be two different but equal top-level envs */
- if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (car) != env)
- SCM_MISC_ERROR ("environment mismatch arg1 <-> arg3",
- scm_list_2 (car, env));
- else
- env = SCM_MEMOIZED_ENV (car);
- car = SCM_MEMOIZED_EXP (car);
- }
- if (SCM_MEMOIZEDP (cdr))
- {
- if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (cdr) != env)
- SCM_MISC_ERROR ("environment mismatch arg2 <-> arg3",
- scm_list_2 (cdr, env));
- else
- env = SCM_MEMOIZED_ENV (cdr);
- cdr = SCM_MEMOIZED_EXP (cdr);
- }
- if (SCM_UNBNDP (env))
- env = scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE);
- else
- SCM_VALIDATE_NULLORCONS (3, env);
- return scm_make_memoized (scm_cons (car, cdr), env);
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_mem_to_proc, "mem->proc", 1, 0, 0,
- (SCM obj),
- "Convert a memoized object (which must represent a body)\n"
- "to a procedure.")
-#define FUNC_NAME s_scm_mem_to_proc
-{
- SCM env;
- SCM_VALIDATE_MEMOIZED (1, obj);
- env = SCM_MEMOIZED_ENV (obj);
- obj = SCM_MEMOIZED_EXP (obj);
- return scm_closure (obj, env);
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_proc_to_mem, "proc->mem", 1, 0, 0,
- (SCM obj),
- "Convert a procedure to a memoized object.")
-#define FUNC_NAME s_scm_proc_to_mem
-{
- SCM_VALIDATE_CLOSURE (1, obj);
- return scm_make_memoized (SCM_CODE (obj), SCM_ENV (obj));
-}
-#undef FUNC_NAME
-
-#endif /* GUILE_DEBUG */
-
-SCM_DEFINE (scm_i_unmemoize_expr, "unmemoize-expr", 1, 0, 0,
- (SCM m),
- "Unmemoize the memoized expression @var{m},")
-#define FUNC_NAME s_scm_i_unmemoize_expr
-{
- SCM_VALIDATE_MEMOIZED (1, m);
- return scm_i_unmemocopy_expr (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_memoized_environment, "memoized-environment", 1, 0, 0,
- (SCM m),
- "Return the environment of the memoized expression @var{m}.")
-#define FUNC_NAME s_scm_memoized_environment
-{
- SCM_VALIDATE_MEMOIZED (1, m);
- return SCM_MEMOIZED_ENV (m);
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_procedure_name, "procedure-name", 1, 0, 0,
- (SCM proc),
- "Return the name of the procedure @var{proc}")
-#define FUNC_NAME s_scm_procedure_name
-{
- SCM_VALIDATE_PROC (1, proc);
- switch (SCM_TYP7 (proc)) {
- case scm_tcs_subrs:
- return SCM_SNAME (proc);
- default:
- {
- SCM name = scm_procedure_property (proc, scm_sym_name);
-#if 0
- /* Source property scm_sym_procname not implemented yet... */
- SCM name = scm_source_property (SCM_CAR (SCM_CLOSURE_BODY (proc)), scm_sym_procname);
- if (scm_is_false (name))
- name = scm_procedure_property (proc, scm_sym_name);
-#endif
- if (scm_is_false (name) && SCM_CLOSUREP (proc))
- name = scm_reverse_lookup (SCM_ENV (proc), proc);
- return name;
- }
- }
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_procedure_source, "procedure-source", 1, 0, 0,
- (SCM proc),
- "Return the source of the procedure @var{proc}.")
-#define FUNC_NAME s_scm_procedure_source
-{
- SCM_VALIDATE_NIM (1, proc);
- again:
- switch (SCM_TYP7 (proc)) {
- case scm_tcs_closures:
- {
- const SCM formals = SCM_CLOSURE_FORMALS (proc);
- const SCM body = SCM_CLOSURE_BODY (proc);
- const SCM src = scm_source_property (body, scm_sym_copy);
-
- if (scm_is_true (src))
- {
- return scm_cons2 (scm_sym_lambda, formals, src);
- }
- else
- {
- const SCM env = SCM_EXTEND_ENV (formals, SCM_EOL, SCM_ENV (proc));
- return scm_cons2 (scm_sym_lambda,
- scm_i_finite_list_copy (formals),
- scm_i_unmemocopy_body (body, env));
- }
- }
- case scm_tcs_struct:
- if (!SCM_I_OPERATORP (proc))
- break;
- goto procprop;
- case scm_tc7_smob:
- if (!SCM_SMOB_DESCRIPTOR (proc).apply)
- break;
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- procprop:
- /* It would indeed be a nice thing if we supplied source even for
- built in procedures! */
- return scm_procedure_property (proc, scm_sym_source);
- case scm_tc7_pws:
- {
- SCM src = scm_procedure_property (proc, scm_sym_source);
- if (scm_is_true (src))
- return src;
- proc = SCM_PROCEDURE (proc);
- goto again;
- }
- default:
- ;
- }
- SCM_WRONG_TYPE_ARG (1, proc);
- return SCM_BOOL_F; /* not reached */
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_procedure_environment, "procedure-environment", 1, 0, 0,
- (SCM proc),
- "Return the environment of the procedure @var{proc}.")
-#define FUNC_NAME s_scm_procedure_environment
-{
- SCM_VALIDATE_NIM (1, proc);
- switch (SCM_TYP7 (proc)) {
- case scm_tcs_closures:
- return SCM_ENV (proc);
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- return SCM_EOL;
- default:
- SCM_WRONG_TYPE_ARG (1, proc);
- /* not reached */
- }
-}
-#undef FUNC_NAME
-
-\f
-
-/* Eval in a local environment. We would like to have the ability to
- * evaluate in a specified local environment, but due to the
- * memoization this isn't normally possible. We solve it by copying
- * the code before evaluating. One solution would be to have eval.c
- * generate yet another evaluator. They are not very big actually.
- */
-SCM_DEFINE (scm_local_eval, "local-eval", 1, 1, 0,
- (SCM exp, SCM env),
- "Evaluate @var{exp} in its environment. If @var{env} is supplied,\n"
- "it is the environment in which to evaluate @var{exp}. Otherwise,\n"
- "@var{exp} must be a memoized code object (in which case, its environment\n"
- "is implicit).")
-#define FUNC_NAME s_scm_local_eval
-{
- if (SCM_UNBNDP (env))
- {
- SCM_VALIDATE_MEMOIZED (1, exp);
- return scm_i_eval_x (SCM_MEMOIZED_EXP (exp), SCM_MEMOIZED_ENV (exp));
- }
- return scm_i_eval (exp, env);
-}
-#undef FUNC_NAME
-
-#if 0
-SCM_REGISTER_PROC (s_reverse_lookup, "reverse-lookup", 2, 0, 0, scm_reverse_lookup);
-#endif
-
-SCM
-scm_reverse_lookup (SCM env, SCM data)
-{
- while (scm_is_pair (env) && scm_is_pair (SCM_CAR (env)))
- {
- SCM names = SCM_CAAR (env);
- SCM values = SCM_CDAR (env);
- while (scm_is_pair (names))
- {
- if (scm_is_eq (SCM_CAR (values), data))
- return SCM_CAR (names);
- names = SCM_CDR (names);
- values = SCM_CDR (values);
- }
- if (!scm_is_null (names) && scm_is_eq (values, data))
- return names;
- env = SCM_CDR (env);
- }
- return SCM_BOOL_F;
-}
-
-SCM
-scm_start_stack (SCM id, SCM exp, SCM env)
-{
- SCM answer;
- scm_t_debug_frame vframe;
- scm_t_debug_info vframe_vect_body;
- vframe.prev = scm_i_last_debug_frame ();
- vframe.status = SCM_VOIDFRAME;
- vframe.vect = &vframe_vect_body;
- vframe.vect[0].id = id;
- scm_i_set_last_debug_frame (&vframe);
- answer = scm_i_eval (exp, env);
- scm_i_set_last_debug_frame (vframe.prev);
- return answer;
-}
-
-SCM_SYNTAX(s_start_stack, "start-stack", scm_makacro, scm_m_start_stack);
-
-static SCM
-scm_m_start_stack (SCM exp, SCM env)
-#define FUNC_NAME s_start_stack
-{
- exp = SCM_CDR (exp);
- if (!scm_is_pair (exp)
- || !scm_is_pair (SCM_CDR (exp))
- || !scm_is_null (SCM_CDDR (exp)))
- SCM_WRONG_NUM_ARGS ();
- return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env);
-}
-#undef FUNC_NAME
-
-
-/* {Debug Objects}
- *
- * The debugging evaluator throws these on frame traps.
- */
-
-scm_t_bits scm_tc16_debugobj;
-
-static int
-debugobj_print (SCM obj, SCM port, scm_print_state *pstate SCM_UNUSED)
-{
- scm_puts ("#<debug-object ", port);
- scm_intprint ((long) SCM_DEBUGOBJ_FRAME (obj), 16, port);
- scm_putc ('>', port);
- return 1;
-}
-
-SCM_DEFINE (scm_debug_object_p, "debug-object?", 1, 0, 0,
- (SCM obj),
- "Return @code{#t} if @var{obj} is a debug object.")
-#define FUNC_NAME s_scm_debug_object_p
-{
- return scm_from_bool(SCM_DEBUGOBJP (obj));
-}
-#undef FUNC_NAME
-
-
-SCM
-scm_make_debugobj (scm_t_debug_frame *frame)
-{
- return scm_cell (scm_tc16_debugobj, (scm_t_bits) frame);
-}
-
-\f
-
-/* Undocumented debugging procedure */
-#ifdef GUILE_DEBUG
-SCM_DEFINE (scm_debug_hang, "debug-hang", 0, 1, 0,
- (SCM obj),
- "Go into an endless loop, which can be only terminated with\n"
- "a debugger.")
-#define FUNC_NAME s_scm_debug_hang
-{
- int go = 0;
- while (!go) ;
- return SCM_UNSPECIFIED;
-}
-#undef FUNC_NAME
-#endif
-
-\f
-
-void
-scm_init_debug ()
-{
- scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS);
-
- scm_tc16_memoized = scm_make_smob_type ("memoized", 0);
- scm_set_smob_mark (scm_tc16_memoized, scm_markcdr);
- scm_set_smob_print (scm_tc16_memoized, memoized_print);
-
- scm_tc16_debugobj = scm_make_smob_type ("debug-object", 0);
- scm_set_smob_print (scm_tc16_debugobj, debugobj_print);
-
-#ifdef GUILE_DEBUG
- scm_c_define ("SCM_IM_AND", SCM_IM_AND);
- scm_c_define ("SCM_IM_BEGIN", SCM_IM_BEGIN);
- scm_c_define ("SCM_IM_CASE", SCM_IM_CASE);
- scm_c_define ("SCM_IM_COND", SCM_IM_COND);
- scm_c_define ("SCM_IM_DO", SCM_IM_DO);
- scm_c_define ("SCM_IM_IF", SCM_IM_IF);
- scm_c_define ("SCM_IM_LAMBDA", SCM_IM_LAMBDA);
- scm_c_define ("SCM_IM_LET", SCM_IM_LET);
- scm_c_define ("SCM_IM_LETSTAR", SCM_IM_LETSTAR);
- scm_c_define ("SCM_IM_LETREC", SCM_IM_LETREC);
- scm_c_define ("SCM_IM_OR", SCM_IM_OR);
- scm_c_define ("SCM_IM_QUOTE", SCM_IM_QUOTE);
- scm_c_define ("SCM_IM_SET_X", SCM_IM_SET_X);
- scm_c_define ("SCM_IM_DEFINE", SCM_IM_DEFINE);
- scm_c_define ("SCM_IM_APPLY", SCM_IM_APPLY);
- scm_c_define ("SCM_IM_CONT", SCM_IM_CONT);
- scm_c_define ("SCM_IM_DISPATCH", SCM_IM_DISPATCH);
-#endif
- scm_add_feature ("debug-extensions");
-
-#include "libguile/debug.x"
-}
-
-/*
- Local Variables:
- c-file-style: "gnu"
- End:
-*/
+/* Debugging extensions for Guile
+ * Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009, 2010, 2011, 2012 Free Software Foundation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef HAVE_GETRLIMIT
+#include <sys/time.h>
+#include <sys/resource.h>
+#endif
+
+#include "libguile/_scm.h"
+#include "libguile/async.h"
+#include "libguile/eval.h"
+#include "libguile/list.h"
+#include "libguile/stackchk.h"
+#include "libguile/throw.h"
+#include "libguile/macros.h"
+#include "libguile/smob.h"
+#include "libguile/struct.h"
+#include "libguile/procprop.h"
+#include "libguile/srcprop.h"
+#include "libguile/alist.h"
+#include "libguile/continuations.h"
+#include "libguile/strports.h"
+#include "libguile/read.h"
+#include "libguile/feature.h"
+#include "libguile/dynwind.h"
+#include "libguile/modules.h"
+#include "libguile/ports.h"
+#include "libguile/root.h"
+#include "libguile/fluids.h"
+#include "libguile/programs.h"
+#include "libguile/memoize.h"
+#include "libguile/vm.h"
+
+#include "libguile/validate.h"
+#include "libguile/debug.h"
+
+#include "libguile/private-options.h"
+\f
+
+
+/*
+ * Debugging options.
+ */
+
+scm_t_option scm_debug_opts[] = {
+ { SCM_OPTION_BOOLEAN, "backwards", 0,
+ "Display backtrace in anti-chronological order." },
+ { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." },
+ { SCM_OPTION_INTEGER, "depth", 20, "Maximal length of printed backtrace." },
+ { SCM_OPTION_BOOLEAN, "backtrace", 1, "Show backtrace on error." },
+ /* This default stack limit will be overridden by init_stack_limit(),
+ if we have getrlimit() and the stack limit is not INFINITY. But it is still
+ important, as some systems have both the soft and the hard limits set to
+ INFINITY; in that case we fall back to this value.
+
+ The situation is aggravated by certain compilers, which can consume
+ "beaucoup de stack", as they say in France.
+
+ See http://thread.gmane.org/gmane.lisp.guile.devel/8599/focus=8662 for
+ more discussion. This setting is 640 KB on 32-bit arches (should be enough
+ for anyone!) or a whoppin' 1280 KB on 64-bit arches.
+ */
+ { SCM_OPTION_INTEGER, "stack", 160000, "Stack size limit (measured in words; 0 = no check)." },
+ { SCM_OPTION_SCM, "show-file-name", SCM_BOOL_T_BITS,
+ "Show file names and line numbers "
+ "in backtraces when not `#f'. A value of `base' "
+ "displays only base names, while `#t' displays full names."},
+ { SCM_OPTION_BOOLEAN, "warn-deprecated", 0,
+ "Warn when deprecated features are used." },
+ { 0 },
+};
+
+
+/* {Run time control of the debugging evaluator}
+ */
+
+SCM_DEFINE (scm_debug_options, "debug-options-interface", 0, 1, 0,
+ (SCM setting),
+ "Option interface for the debug options. Instead of using\n"
+ "this procedure directly, use the procedures @code{debug-enable},\n"
+ "@code{debug-disable}, @code{debug-set!} and @code{debug-options}.")
+#define FUNC_NAME s_scm_debug_options
+{
+ SCM ans;
+
+ scm_dynwind_begin (0);
+ scm_dynwind_critical_section (SCM_BOOL_F);
+
+ ans = scm_options (setting, scm_debug_opts, FUNC_NAME);
+#ifdef STACK_CHECKING
+ scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P;
+#endif
+
+ scm_dynwind_end ();
+ return ans;
+}
+#undef FUNC_NAME
+
+\f
+SCM_SYMBOL (scm_sym_source, "source");
+
+SCM_DEFINE (scm_procedure_name, "procedure-name", 1, 0, 0,
+ (SCM proc),
+ "Return the name of the procedure @var{proc}")
+#define FUNC_NAME s_scm_procedure_name
+{
+ SCM_VALIDATE_PROC (1, proc);
+ while (SCM_STRUCTP (proc) && SCM_STRUCT_APPLICABLE_P (proc))
+ proc = SCM_STRUCT_PROCEDURE (proc);
+ return scm_procedure_property (proc, scm_sym_name);
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_procedure_source, "procedure-source", 1, 0, 0,
+ (SCM proc),
+ "Return the source of the procedure @var{proc}.")
+#define FUNC_NAME s_scm_procedure_source
+{
+ SCM src;
+ SCM_VALIDATE_PROC (1, proc);
+
+ do
+ {
+ src = scm_procedure_property (proc, scm_sym_source);
+ if (scm_is_true (src))
+ return src;
+
+ switch (SCM_TYP7 (proc)) {
+ case scm_tcs_struct:
+ if (!SCM_STRUCT_APPLICABLE_P (proc)
+ || SCM_IMP (SCM_STRUCT_PROCEDURE (proc)))
+ break;
+ proc = SCM_STRUCT_PROCEDURE (proc);
+ continue;
+ default:
+ break;
+ }
+ }
+ while (0);
+
+ return SCM_BOOL_F;
+}
+#undef FUNC_NAME
+
+
+\f
+
+#if 0
+SCM_REGISTER_PROC (s_reverse_lookup, "reverse-lookup", 2, 0, 0, scm_reverse_lookup);
+#endif
+
+SCM
+scm_reverse_lookup (SCM env, SCM data)
+{
+ while (scm_is_pair (env) && scm_is_pair (SCM_CAR (env)))
+ {
+ SCM names = SCM_CAAR (env);
+ SCM values = SCM_CDAR (env);
+ while (scm_is_pair (names))
+ {
+ if (scm_is_eq (SCM_CAR (values), data))
+ return SCM_CAR (names);
+ names = SCM_CDR (names);
+ values = SCM_CDR (values);
+ }
+ if (!scm_is_null (names) && scm_is_eq (values, data))
+ return names;
+ env = SCM_CDR (env);
+ }
+ return SCM_BOOL_F;
+}
+
+\f
+
+/* Undocumented debugging procedure */
+#ifdef GUILE_DEBUG
+SCM_DEFINE (scm_debug_hang, "debug-hang", 0, 1, 0,
+ (SCM obj),
+ "Go into an endless loop, which can be only terminated with\n"
+ "a debugger.")
+#define FUNC_NAME s_scm_debug_hang
+{
+ int go = 0;
+ while (!go) ;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif
+
+SCM
+scm_local_eval (SCM exp, SCM env)
+{
+ static SCM local_eval_var = SCM_UNDEFINED;
+ static scm_i_pthread_mutex_t local_eval_var_mutex
+ = SCM_I_PTHREAD_MUTEX_INITIALIZER;
+
+ scm_i_scm_pthread_mutex_lock (&local_eval_var_mutex);
+ if (SCM_UNBNDP (local_eval_var))
+ local_eval_var = scm_c_public_variable ("ice-9 local-eval", "local-eval");
+ scm_i_pthread_mutex_unlock (&local_eval_var_mutex);
+
+ return scm_call_2 (SCM_VARIABLE_REF (local_eval_var), exp, env);
+}
+
+static void
+init_stack_limit (void)
+{
+#ifdef HAVE_GETRLIMIT
+ struct rlimit lim;
+ if (getrlimit (RLIMIT_STACK, &lim) == 0)
+ {
+ rlim_t bytes = lim.rlim_cur;
+
+ /* set our internal stack limit to 80% of the rlimit. */
+ if (bytes == RLIM_INFINITY)
+ bytes = lim.rlim_max;
+
+ if (bytes != RLIM_INFINITY)
+ SCM_STACK_LIMIT = bytes * 8 / 10 / sizeof (scm_t_bits);
+ }
+ errno = 0;
+#endif
+}
+
+\f
+
+void
+scm_init_debug ()
+{
+ init_stack_limit ();
+ scm_init_opts (scm_debug_options, scm_debug_opts);
+
+ scm_add_feature ("debug-extensions");
+
+#include "libguile/debug.x"
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff