-/* Copyright (C) 1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
+/* Copyright (C) 1995-1998, 2000, 2001, 2004, 2006, 2010, 2012-2014
+ * Free Software Foundation, Inc.
*
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
+ * 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.
*
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
+ * 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.
*
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
+ * 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
+ */
\f
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include "libguile/_scm.h"
+#include "libguile/dynwind.h"
#include "libguile/pairs.h"
#include "libguile/strings.h"
#include "libguile/throw.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
-#ifdef HAVE_UNISTD_H
#include <unistd.h>
-#endif
/* For Windows... */
#ifdef HAVE_IO_H
#endif
\f
-\f
/* {Errors and Exceptional Conditions}
*/
-/* All errors should pass through here. */
+/* Scheme interface to scm_error_scm. */
void
scm_error (SCM key, const char *subr, const char *message, SCM args, SCM rest)
{
- SCM arg_list;
- if (scm_gc_running_p)
- {
- /* The error occured during GC --- abort */
- fprintf (stderr, "Error in %s during GC: %s\n",
- subr ? subr : "unknown function",
- message ? message : "<empty message>");
- abort ();
- }
- arg_list = scm_list_4 (subr ? scm_makfrom0str (subr) : SCM_BOOL_F,
- message ? scm_makfrom0str (message) : SCM_BOOL_F,
- args,
- rest);
- scm_ithrow (key, arg_list, 1);
-
- /* No return, but just in case: */
- {
- const char msg[] = "guile:scm_error:scm_ithrow returned!\n";
-
- write (2, msg, (sizeof msg) - 1);
- }
- exit (1);
+ scm_error_scm
+ (key,
+ (subr == NULL) ? SCM_BOOL_F : scm_from_locale_string (subr),
+ (message == NULL) ? SCM_BOOL_F : scm_from_locale_string (message),
+ args, rest);
}
-/* Scheme interface to scm_error. */
+/* All errors should pass through here. */
SCM_DEFINE (scm_error_scm, "scm-error", 5, 0, 0,
(SCM key, SCM subr, SCM message, SCM args, SCM data),
"Raise an error with key @var{key}. @var{subr} can be a string\n"
"@code{#f} depending on @var{key}: if @var{key} is\n"
"@code{system-error} then it should be a list containing the\n"
"Unix @code{errno} value; If @var{key} is @code{signal} then it\n"
- "should be a list containing the Unix signal number; otherwise\n"
+ "should be a list containing the Unix signal number; If\n"
+ "@var{key} is @code{out-of-range}, @code{wrong-type-arg},\n"
+ "or @code{keyword-argument-error}, "
+ "it is a list containing the bad value; otherwise\n"
"it will usually be @code{#f}.")
#define FUNC_NAME s_scm_error_scm
{
- char *szSubr;
- char *szMessage;
-
- SCM_VALIDATE_SYMBOL (1, key);
-
- if (SCM_FALSEP (subr))
- {
- szSubr = NULL;
- }
- else if (SCM_SYMBOLP (subr))
- {
- szSubr = SCM_SYMBOL_CHARS (subr);
- }
- else
- {
- SCM_VALIDATE_STRING (2, subr);
- szSubr = SCM_STRING_CHARS (subr);
- }
-
- if (SCM_FALSEP (message))
- {
- szMessage = NULL;
- }
- else
+ if (scm_gc_running_p)
{
- SCM_VALIDATE_STRING (2, message);
- szMessage = SCM_STRING_CHARS (message);
+ /* The error occured during GC --- abort */
+ fprintf (stderr, "Guile: error during GC.\n"),
+ abort ();
}
- scm_error (key, szSubr, szMessage, args, data);
- /* not reached. */
+ scm_ithrow (key, scm_list_4 (subr, message, args, data), 1);
+
+ /* No return, but just in case: */
+ fprintf (stderr, "Guile scm_ithrow returned!\n");
+ exit (EXIT_FAILURE);
}
#undef FUNC_NAME
-#ifdef __MINGW32__
-# include "win32-socket.h"
-# define SCM_I_STRERROR(err) \
- ((err >= WSABASEERR) ? scm_i_socket_strerror (err) : strerror (err))
-# define SCM_I_ERRNO() \
- (errno ? errno : scm_i_socket_errno ())
-#else
-# define SCM_I_STRERROR(err) strerror (err)
-# define SCM_I_ERRNO() errno
-#endif /* __MINGW32__ */
+/* strerror may not be thread safe, for instance in glibc (version 2.3.2) an
+ error number not among the known values results in a string like "Unknown
+ error 9999" formed in a static buffer, which will be overwritten by a
+ similar call in another thread. A test program running two threads with
+ different unknown error numbers can trip this fairly quickly.
+
+ Some systems don't do what glibc does, instead just giving a single
+ "Unknown error" for unrecognised numbers. It doesn't seem worth trying
+ to tell if that's the case, a mutex is reasonably fast, and strerror
+ isn't needed very often.
+
+ strerror_r (when available) could be used, it might be a touch faster
+ than a frame and a mutex, though there's probably not much
+ difference. */
SCM_DEFINE (scm_strerror, "strerror", 1, 0, 0,
(SCM err),
"must be an integer value.")
#define FUNC_NAME s_scm_strerror
{
- SCM_VALIDATE_INUM (1,err);
- return scm_makfrom0str (SCM_I_STRERROR (SCM_INUM (err)));
+ SCM ret;
+ int errnum = scm_to_int (err); /* Must be done outside of the
+ critical section below, to avoid a
+ deadlock on errors. */
+ scm_dynwind_begin (0);
+ scm_i_dynwind_pthread_mutex_lock (&scm_i_misc_mutex);
+
+ ret = scm_from_locale_string (strerror (errnum));
+
+ scm_dynwind_end ();
+ return ret;
}
#undef FUNC_NAME
void
scm_syserror (const char *subr)
{
- int save_errno = SCM_I_ERRNO ();
-
+ SCM err = scm_from_int (errno);
+
+ /* It could be that we're getting here because the syscall was
+ interrupted by a signal. In that case a signal handler might have
+ been queued to run. The signal handler probably throws an
+ exception.
+
+ If we don't try to run the signal handler now, it will run later,
+ which would result in two exceptions being thrown: this syserror,
+ and then at some later time the exception thrown by the async
+ signal handler.
+
+ The problem is that we don't know if handling the signal caused an
+ async to be queued. By this time scmsigs.c:take_signal will have
+ written a byte on the fd, but we don't know if the signal-handling
+ thread has read it off and queued an async.
+
+ Ideally we need some API like scm_i_ensure_signals_delivered() to
+ catch up signal delivery. Barring that, we just cross our digits
+ and pray; it could be that we handle the signal in time, and just
+ throw once, or it could be that we miss the deadline and throw
+ twice.
+ */
+#ifdef EINTR
+ if (scm_to_int (err) == EINTR)
+ SCM_ASYNC_TICK;
+#endif
+
scm_error (scm_system_error_key,
subr,
"~A",
- scm_cons (scm_makfrom0str (SCM_I_STRERROR (save_errno)), SCM_EOL),
- scm_cons (SCM_MAKINUM (save_errno), SCM_EOL));
+ scm_cons (scm_strerror (err), SCM_EOL),
+ scm_cons (err, SCM_EOL));
}
void
scm_syserror_msg (const char *subr, const char *message, SCM args, int eno)
{
+ /* See above note about the EINTR signal handling race. */
+#ifdef EINTR
+ if (eno == EINTR)
+ SCM_ASYNC_TICK;
+#endif
scm_error (scm_system_error_key,
subr,
message,
args,
- scm_cons (SCM_MAKINUM (eno), SCM_EOL));
+ scm_cons (scm_from_int (eno), SCM_EOL));
}
SCM_GLOBAL_SYMBOL (scm_num_overflow_key, "numerical-overflow");
{
scm_error (scm_out_of_range_key,
subr,
- "Argument out of range: ~S",
+ "Value out of range: ~S",
scm_list_1 (bad_value),
- SCM_BOOL_F);
+ scm_list_1 (bad_value));
}
void
{
scm_error (scm_out_of_range_key,
subr,
- "Argument ~S out of range: ~S",
- scm_list_2 (pos,bad_value),
- SCM_BOOL_F);
+ "Argument ~A out of range: ~S",
+ scm_list_2 (pos, bad_value),
+ scm_list_1 (bad_value));
}
scm_error (scm_args_number_key,
NULL,
"Wrong number of arguments to ~A",
- scm_list_1 (scm_makfrom0str (subr)),
+ scm_list_1 (scm_from_locale_string (subr)),
SCM_BOOL_F);
}
{
scm_error (scm_arg_type_key,
subr,
- (pos == 0) ? "Wrong type argument: ~S"
+ (pos == 0) ? "Wrong type: ~S"
: "Wrong type argument in position ~A: ~S",
(pos == 0) ? scm_list_1 (bad_value)
- : scm_list_2 (SCM_MAKINUM (pos), bad_value),
- SCM_BOOL_F);
+ : scm_list_2 (scm_from_int (pos), bad_value),
+ scm_list_1 (bad_value));
}
void
-scm_wrong_type_arg_msg (const char *subr, int pos, SCM bad_value, const char *szMessage)
+scm_i_wrong_type_arg_symbol (SCM symbol, int pos, SCM bad_value)
{
- SCM msg = scm_makfrom0str(szMessage);
- if (pos == 0) {
- scm_error (scm_arg_type_key,
- subr, "Wrong type argument (expecting ~A): ~S",
- scm_list_2 (msg, bad_value),
- SCM_BOOL_F);
- } else {
- scm_error (scm_arg_type_key,
- subr,
- "Wrong type argument in position ~A (expecting ~A): ~S",
- scm_list_3 (SCM_MAKINUM (pos), msg, bad_value),
- SCM_BOOL_F);
- }
+ scm_error_scm (scm_arg_type_key,
+ scm_symbol_to_string (symbol),
+ (pos == 0) ? scm_from_locale_string ("Wrong type: ~S")
+ : scm_from_locale_string ("Wrong type argument in position ~A: ~S"),
+ (pos == 0) ? scm_list_1 (bad_value)
+ : scm_list_2 (scm_from_int (pos), bad_value),
+ scm_list_1 (bad_value));
+ scm_remember_upto_here_2 (symbol, bad_value);
}
-
-SCM_GLOBAL_SYMBOL (scm_memory_alloc_key, "memory-allocation-error");
void
-scm_memory_error (const char *subr)
+scm_wrong_type_arg_msg (const char *subr, int pos, SCM bad_value, const char *szMessage)
{
- scm_error (scm_memory_alloc_key,
- subr,
- "Memory allocation error",
- SCM_BOOL_F,
- SCM_BOOL_F);
+ SCM msg = scm_from_locale_string (szMessage);
+ if (pos == 0)
+ {
+ scm_error (scm_arg_type_key,
+ subr, "Wrong type (expecting ~A): ~S",
+ scm_list_2 (msg, bad_value),
+ scm_list_1 (bad_value));
+ }
+ else
+ {
+ scm_error (scm_arg_type_key,
+ subr,
+ "Wrong type argument in position ~A (expecting ~A): ~S",
+ scm_list_3 (scm_from_int (pos), msg, bad_value),
+ scm_list_1 (bad_value));
+ }
}
+
SCM_GLOBAL_SYMBOL (scm_misc_error_key, "misc-error");
void
scm_misc_error (const char *subr, const char *message, SCM args)
void
scm_init_error ()
{
-#include "libguile/cpp_err_symbols.c"
-#ifndef SCM_MAGIC_SNARFER
+#include "libguile/cpp-E.c"
#include "libguile/error.x"
-#endif
}
HCoop / bpt / guile.git / blobdiff