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* scmsigs.h, async.h: updated.

Browse source 
* _scm.h: if HAVE_RESTARTS is defined then don't use a SYSCALL
loop.

* posix.c (scm_uname): interpret only negative values as an error.
Solaris normally returns a positive value.

* script.c (scm_compile_shell_switches): if we are not going into
an interactive repl, set scm_mask_ints to zero so that asyncs can
run.

* simpos.c (scm_system):  don't ignore/unignore signals around
the "system" call.

* posix.c (scm_open_pipe): don't ignore/unignore signals around
the "popen" call.

* init.c (scm_boot_guile_1): don't call scm_init_signals, it's
done in boot-9.scm instead.

* scmsigs.c, async.c: Major rewriting of signal handling code.
(scm_sigaction): new procedure.
(scm_sleep): don't wrap sleep in SCM_SYSCALL, it would mess up the
timing.
(scm_raise): return unspecified, throw error on failure.

* boot-9.scm: signal-handler, alarm-thunk: removed.
don't define ticks-interrupt etc.
top-repl: install signal handlers for SIGINT, SIGFPE, SIGSEGV, SIGBUS
during call to scm-style-repl.

* acconfig.h: mention HAVE_RESTARTS.
* configure.in: check for sigaction and restartable system calls.
This commit is contained in:
Gary Houston 1997-05-31 19:02:38 +00:00
parent 19da35d025
commit e1a191a8ca
18 changed files with 557 additions and 634 deletions
Download patch file Download diff file Expand all files Collapse all files

5
ChangeLog
View file

@ -1,3 +1,8 @@
Sat May 31 03:48:45 1997 Gary Houston <ghouston@actrix.gen.nz>
* acconfig.h: mention HAVE_RESTARTS.
* configure.in: check for sigaction and restartable system calls.
Tue May 27 22:47:52 1997 Tim Pierce <twp@twp.tezcat.com> Tue May 27 22:47:52 1997 Tim Pierce <twp@twp.tezcat.com>
* configure.in: Check for presence of regcomp. * configure.in: Check for presence of regcomp.

8
NEWS
View file

@ -40,6 +40,14 @@ of SCSH's regular expression functions. They are:
* Changes to the scm_ interface * Changes to the scm_ interface
* Changes to system call interfaces:
** The value returned by `raise' is now unspecified. It throws an exception
if an error occurs.
** A new procedure `sigaction' can be used to install signal handlers
(documentation to be provided).
Changes in Guile 1.1 (Fri May 16 1997): Changes in Guile 1.1 (Fri May 16 1997):

3
acconfig.h
View file

@ -72,3 +72,6 @@
/* Define if you want support for dynamic linking. */ /* Define if you want support for dynamic linking. */
#undef DYNAMIC_LINKING #undef DYNAMIC_LINKING
/* Define if the operating system can restart system calls. */
#undef HAVE_RESTARTS

235
configure vendored
View file

@ -1945,7 +1945,7 @@ EOF
fi fi
for ac_func in ctermid ftime getcwd geteuid gethostent gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid for ac_func in ctermid ftime getcwd geteuid gethostent gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid
do do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:1952: checking for $ac_func" >&5 echo "configure:1952: checking for $ac_func" >&5
@ -2001,15 +2001,53 @@ fi
done done
echo $ac_n "checking for restartable system calls""... $ac_c" 1>&6
echo "configure:2006: checking for restartable system calls" >&5
if eval "test \"`echo '$''{'scm_cv_restarts'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
if test $ac_cv_func_sigaction = yes; then
cat > conftest.$ac_ext <<EOF
#line 2012 "configure"
#include "confdefs.h"
#include <signal.h>
int main() {
int a = SA_RESTART
; return 0; }
EOF
if { (eval echo configure:2019: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
scm_cv_restarts=yes
else
echo "configure: failed program was:" >&5
cat conftest.$ac_ext >&5
rm -rf conftest*
scm_cv_restarts=no
fi
rm -f conftest*
else
scm_cv_restarts=no
fi
fi
echo "$ac_t""$scm_cv_restarts" 1>&6
if test $scm_cv_restarts = yes; then
cat >> confdefs.h <<\EOF
#define HAVE_RESTARTS 1
EOF
fi
for ac_func in regcomp for ac_func in regcomp
do do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2008: checking for $ac_func" >&5 echo "configure:2046: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2013 "configure" #line 2051 "configure"
#include "confdefs.h" #include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes, /* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */ which can conflict with char $ac_func(); below. */
@ -2032,7 +2070,7 @@ $ac_func();
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2036: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2074: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_func_$ac_func=yes" eval "ac_cv_func_$ac_func=yes"
else else
@ -2060,12 +2098,12 @@ done
for ac_func in inet_aton putenv strerror for ac_func in inet_aton putenv strerror
do do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2064: checking for $ac_func" >&5 echo "configure:2102: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2069 "configure" #line 2107 "configure"
#include "confdefs.h" #include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes, /* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */ which can conflict with char $ac_func(); below. */
@ -2088,7 +2126,7 @@ $ac_func();
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2092: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2130: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_func_$ac_func=yes" eval "ac_cv_func_$ac_func=yes"
else else
@ -2118,19 +2156,19 @@ done
# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
# for constant arguments. Useless! # for constant arguments. Useless!
echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6 echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
echo "configure:2122: checking for working alloca.h" >&5 echo "configure:2160: checking for working alloca.h" >&5
if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2127 "configure" #line 2165 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <alloca.h> #include <alloca.h>
int main() { int main() {
char *p = alloca(2 * sizeof(int)); char *p = alloca(2 * sizeof(int));
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2134: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2172: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
ac_cv_header_alloca_h=yes ac_cv_header_alloca_h=yes
else else
@ -2151,12 +2189,12 @@ EOF
fi fi
echo $ac_n "checking for alloca""... $ac_c" 1>&6 echo $ac_n "checking for alloca""... $ac_c" 1>&6
echo "configure:2155: checking for alloca" >&5 echo "configure:2193: checking for alloca" >&5
if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2160 "configure" #line 2198 "configure"
#include "confdefs.h" #include "confdefs.h"
#ifdef __GNUC__ #ifdef __GNUC__
@ -2179,7 +2217,7 @@ int main() {
char *p = (char *) alloca(1); char *p = (char *) alloca(1);
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2183: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2221: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
ac_cv_func_alloca_works=yes ac_cv_func_alloca_works=yes
else else
@ -2211,12 +2249,12 @@ EOF
echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6 echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
echo "configure:2215: checking whether alloca needs Cray hooks" >&5 echo "configure:2253: checking whether alloca needs Cray hooks" >&5
if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2220 "configure" #line 2258 "configure"
#include "confdefs.h" #include "confdefs.h"
#if defined(CRAY) && ! defined(CRAY2) #if defined(CRAY) && ! defined(CRAY2)
webecray webecray
@ -2241,12 +2279,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
if test $ac_cv_os_cray = yes; then if test $ac_cv_os_cray = yes; then
for ac_func in _getb67 GETB67 getb67; do for ac_func in _getb67 GETB67 getb67; do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2245: checking for $ac_func" >&5 echo "configure:2283: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2250 "configure" #line 2288 "configure"
#include "confdefs.h" #include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes, /* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */ which can conflict with char $ac_func(); below. */
@ -2269,7 +2307,7 @@ $ac_func();
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2273: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2311: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_func_$ac_func=yes" eval "ac_cv_func_$ac_func=yes"
else else
@ -2296,7 +2334,7 @@ done
fi fi
echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6 echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
echo "configure:2300: checking stack direction for C alloca" >&5 echo "configure:2338: checking stack direction for C alloca" >&5
if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
@ -2304,7 +2342,7 @@ else
ac_cv_c_stack_direction=0 ac_cv_c_stack_direction=0
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2308 "configure" #line 2346 "configure"
#include "confdefs.h" #include "confdefs.h"
find_stack_direction () find_stack_direction ()
{ {
@ -2323,7 +2361,7 @@ main ()
exit (find_stack_direction() < 0); exit (find_stack_direction() < 0);
} }
EOF EOF
if { (eval echo configure:2327: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null if { (eval echo configure:2365: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then then
ac_cv_c_stack_direction=1 ac_cv_c_stack_direction=1
else else
@ -2346,12 +2384,12 @@ fi
echo $ac_n "checking for st_rdev in struct stat""... $ac_c" 1>&6 echo $ac_n "checking for st_rdev in struct stat""... $ac_c" 1>&6
echo "configure:2350: checking for st_rdev in struct stat" >&5 echo "configure:2388: checking for st_rdev in struct stat" >&5
if eval "test \"`echo '$''{'ac_cv_struct_st_rdev'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_struct_st_rdev'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2355 "configure" #line 2393 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
@ -2359,7 +2397,7 @@ int main() {
struct stat s; s.st_rdev; struct stat s; s.st_rdev;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2363: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:2401: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
ac_cv_struct_st_rdev=yes ac_cv_struct_st_rdev=yes
else else
@ -2380,12 +2418,12 @@ EOF
fi fi
echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
echo "configure:2384: checking for st_blksize in struct stat" >&5 echo "configure:2422: checking for st_blksize in struct stat" >&5
if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2389 "configure" #line 2427 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
@ -2393,7 +2431,7 @@ int main() {
struct stat s; s.st_blksize; struct stat s; s.st_blksize;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2397: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:2435: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
ac_cv_struct_st_blksize=yes ac_cv_struct_st_blksize=yes
else else
@ -2417,12 +2455,12 @@ fi
# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to # We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
# LIBOBJS, which we don't need. This seems more direct. # LIBOBJS, which we don't need. This seems more direct.
echo $ac_n "checking for st_blocks in struct stat""... $ac_c" 1>&6 echo $ac_n "checking for st_blocks in struct stat""... $ac_c" 1>&6
echo "configure:2421: checking for st_blocks in struct stat" >&5 echo "configure:2459: checking for st_blocks in struct stat" >&5
if eval "test \"`echo '$''{'ac_cv_struct_st_blocks'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_struct_st_blocks'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2426 "configure" #line 2464 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
@ -2430,7 +2468,7 @@ int main() {
struct stat s; s.st_blocks; struct stat s; s.st_blocks;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2434: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:2472: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
ac_cv_struct_st_blocks=yes ac_cv_struct_st_blocks=yes
else else
@ -2451,12 +2489,12 @@ EOF
fi fi
echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6 echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
echo "configure:2455: checking whether struct tm is in sys/time.h or time.h" >&5 echo "configure:2493: checking whether struct tm is in sys/time.h or time.h" >&5
if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2460 "configure" #line 2498 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <sys/types.h> #include <sys/types.h>
#include <time.h> #include <time.h>
@ -2464,7 +2502,7 @@ int main() {
struct tm *tp; tp->tm_sec; struct tm *tp; tp->tm_sec;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2468: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:2506: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
ac_cv_struct_tm=time.h ac_cv_struct_tm=time.h
else else
@ -2485,12 +2523,12 @@ EOF
fi fi
echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6 echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
echo "configure:2489: checking for tm_zone in struct tm" >&5 echo "configure:2527: checking for tm_zone in struct tm" >&5
if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2494 "configure" #line 2532 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <sys/types.h> #include <sys/types.h>
#include <$ac_cv_struct_tm> #include <$ac_cv_struct_tm>
@ -2498,7 +2536,7 @@ int main() {
struct tm tm; tm.tm_zone; struct tm tm; tm.tm_zone;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2502: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:2540: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
ac_cv_struct_tm_zone=yes ac_cv_struct_tm_zone=yes
else else
@ -2518,12 +2556,12 @@ EOF
else else
echo $ac_n "checking for tzname""... $ac_c" 1>&6 echo $ac_n "checking for tzname""... $ac_c" 1>&6
echo "configure:2522: checking for tzname" >&5 echo "configure:2560: checking for tzname" >&5
if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2527 "configure" #line 2565 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <time.h> #include <time.h>
#ifndef tzname /* For SGI. */ #ifndef tzname /* For SGI. */
@ -2533,7 +2571,7 @@ int main() {
atoi(*tzname); atoi(*tzname);
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2537: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2575: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
ac_cv_var_tzname=yes ac_cv_var_tzname=yes
else else
@ -2556,12 +2594,12 @@ fi
echo $ac_n "checking whether we need POSIX to get struct utimbuf""... $ac_c" 1>&6 echo $ac_n "checking whether we need POSIX to get struct utimbuf""... $ac_c" 1>&6
echo "configure:2560: checking whether we need POSIX to get struct utimbuf" >&5 echo "configure:2598: checking whether we need POSIX to get struct utimbuf" >&5
if eval "test \"`echo '$''{'guile_cv_struct_utimbuf_needs_posix'+set}'`\" = set"; then if eval "test \"`echo '$''{'guile_cv_struct_utimbuf_needs_posix'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2565 "configure" #line 2603 "configure"
#include "confdefs.h" #include "confdefs.h"
#ifdef __EMX__ #ifdef __EMX__
@ -2573,7 +2611,7 @@ struct utime blah;
EOF EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out" ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
{ (eval echo configure:2577: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } { (eval echo configure:2615: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out` ac_err=`grep -v '^ *+' conftest.out`
if test -z "$ac_err"; then if test -z "$ac_err"; then
rm -rf conftest* rm -rf conftest*
@ -2602,7 +2640,7 @@ xtra_PLUGIN_guile_libs=""
echo $ac_n "checking for main in -lm""... $ac_c" 1>&6 echo $ac_n "checking for main in -lm""... $ac_c" 1>&6
echo "configure:2606: checking for main in -lm" >&5 echo "configure:2644: checking for main in -lm" >&5
ac_lib_var=`echo m'_'main | sed 'y%./+-%__p_%'` ac_lib_var=`echo m'_'main | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
@ -2610,14 +2648,14 @@ else
ac_save_LIBS="$LIBS" ac_save_LIBS="$LIBS"
LIBS="-lm $LIBS" LIBS="-lm $LIBS"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2614 "configure" #line 2652 "configure"
#include "confdefs.h" #include "confdefs.h"
int main() { int main() {
main() main()
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2621: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2659: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes" eval "ac_cv_lib_$ac_lib_var=yes"
else else
@ -2645,12 +2683,12 @@ else
fi fi
echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6 echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
echo "configure:2649: checking for gethostbyname" >&5 echo "configure:2687: checking for gethostbyname" >&5
if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2654 "configure" #line 2692 "configure"
#include "confdefs.h" #include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes, /* System header to define __stub macros and hopefully few prototypes,
which can conflict with char gethostbyname(); below. */ which can conflict with char gethostbyname(); below. */
@ -2673,7 +2711,7 @@ gethostbyname();
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2677: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2715: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_func_gethostbyname=yes" eval "ac_cv_func_gethostbyname=yes"
else else
@ -2694,7 +2732,7 @@ fi
if test $ac_cv_func_gethostbyname = no; then if test $ac_cv_func_gethostbyname = no; then
echo $ac_n "checking for gethostbyname in -lnsl""... $ac_c" 1>&6 echo $ac_n "checking for gethostbyname in -lnsl""... $ac_c" 1>&6
echo "configure:2698: checking for gethostbyname in -lnsl" >&5 echo "configure:2736: checking for gethostbyname in -lnsl" >&5
ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'` ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
@ -2702,7 +2740,7 @@ else
ac_save_LIBS="$LIBS" ac_save_LIBS="$LIBS"
LIBS="-lnsl $LIBS" LIBS="-lnsl $LIBS"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2706 "configure" #line 2744 "configure"
#include "confdefs.h" #include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */ /* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2 /* We use char because int might match the return type of a gcc2
@ -2713,7 +2751,7 @@ int main() {
gethostbyname() gethostbyname()
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2717: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2755: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes" eval "ac_cv_lib_$ac_lib_var=yes"
else else
@ -2742,12 +2780,12 @@ fi
fi fi
echo $ac_n "checking for connect""... $ac_c" 1>&6 echo $ac_n "checking for connect""... $ac_c" 1>&6
echo "configure:2746: checking for connect" >&5 echo "configure:2784: checking for connect" >&5
if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2751 "configure" #line 2789 "configure"
#include "confdefs.h" #include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes, /* System header to define __stub macros and hopefully few prototypes,
which can conflict with char connect(); below. */ which can conflict with char connect(); below. */
@ -2770,7 +2808,7 @@ connect();
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2774: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2812: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_func_connect=yes" eval "ac_cv_func_connect=yes"
else else
@ -2791,7 +2829,7 @@ fi
if test $ac_cv_func_connect = no; then if test $ac_cv_func_connect = no; then
echo $ac_n "checking for connect in -lsocket""... $ac_c" 1>&6 echo $ac_n "checking for connect in -lsocket""... $ac_c" 1>&6
echo "configure:2795: checking for connect in -lsocket" >&5 echo "configure:2833: checking for connect in -lsocket" >&5
ac_lib_var=`echo socket'_'connect | sed 'y%./+-%__p_%'` ac_lib_var=`echo socket'_'connect | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
@ -2799,7 +2837,7 @@ else
ac_save_LIBS="$LIBS" ac_save_LIBS="$LIBS"
LIBS="-lsocket $LIBS" LIBS="-lsocket $LIBS"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2803 "configure" #line 2841 "configure"
#include "confdefs.h" #include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */ /* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2 /* We use char because int might match the return type of a gcc2
@ -2810,7 +2848,7 @@ int main() {
connect() connect()
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2814: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2852: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes" eval "ac_cv_lib_$ac_lib_var=yes"
else else
@ -2842,7 +2880,7 @@ fi
if test "$enable_dynamic_linking" = "yes"; then if test "$enable_dynamic_linking" = "yes"; then
echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6 echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
echo "configure:2846: checking for dlopen in -ldl" >&5 echo "configure:2884: checking for dlopen in -ldl" >&5
ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'` ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
@ -2850,7 +2888,7 @@ else
ac_save_LIBS="$LIBS" ac_save_LIBS="$LIBS"
LIBS="-ldl $LIBS" LIBS="-ldl $LIBS"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2854 "configure" #line 2892 "configure"
#include "confdefs.h" #include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */ /* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2 /* We use char because int might match the return type of a gcc2
@ -2861,7 +2899,7 @@ int main() {
dlopen() dlopen()
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2865: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2903: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes" eval "ac_cv_lib_$ac_lib_var=yes"
else else
@ -2896,7 +2934,7 @@ EOF
else else
echo $ac_n "checking for dld_link in -ldld""... $ac_c" 1>&6 echo $ac_n "checking for dld_link in -ldld""... $ac_c" 1>&6
echo "configure:2900: checking for dld_link in -ldld" >&5 echo "configure:2938: checking for dld_link in -ldld" >&5
ac_lib_var=`echo dld'_'dld_link | sed 'y%./+-%__p_%'` ac_lib_var=`echo dld'_'dld_link | sed 'y%./+-%__p_%'`
if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
@ -2904,7 +2942,7 @@ else
ac_save_LIBS="$LIBS" ac_save_LIBS="$LIBS"
LIBS="-ldld $LIBS" LIBS="-ldld $LIBS"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2908 "configure" #line 2946 "configure"
#include "confdefs.h" #include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */ /* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2 /* We use char because int might match the return type of a gcc2
@ -2915,7 +2953,7 @@ int main() {
dld_link() dld_link()
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2919: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:2957: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_lib_$ac_lib_var=yes" eval "ac_cv_lib_$ac_lib_var=yes"
else else
@ -2952,12 +2990,12 @@ else
for ac_func in shl_load for ac_func in shl_load
do do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:2956: checking for $ac_func" >&5 echo "configure:2994: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 2961 "configure" #line 2999 "configure"
#include "confdefs.h" #include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes, /* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func(); below. */ which can conflict with char $ac_func(); below. */
@ -2980,7 +3018,7 @@ $ac_func();
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:2984: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:3022: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
eval "ac_cv_func_$ac_func=yes" eval "ac_cv_func_$ac_func=yes"
else else
@ -3025,13 +3063,13 @@ if test "$cross_compiling" = yes; then
echo "configure: warning: Guessing that stack grows down -- see scmconfig.h.in" 1>&2 echo "configure: warning: Guessing that stack grows down -- see scmconfig.h.in" 1>&2
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3029 "configure" #line 3067 "configure"
#include "confdefs.h" #include "confdefs.h"
aux (l) unsigned long l; aux (l) unsigned long l;
{ int x; exit (l >= ((unsigned long)&x)); } { int x; exit (l >= ((unsigned long)&x)); }
main () { int q; aux((unsigned long)&q); } main () { int q; aux((unsigned long)&q); }
EOF EOF
if { (eval echo configure:3035: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null if { (eval echo configure:3073: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then then
cat >> confdefs.h <<\EOF cat >> confdefs.h <<\EOF
#define SCM_STACK_GROWS_UP 1 #define SCM_STACK_GROWS_UP 1
@ -3054,11 +3092,11 @@ EOF
echo "configure: warning: Guessing that sizeof(long) == sizeof(float) -- see scmconfig.h.in" 1>&2 echo "configure: warning: Guessing that sizeof(long) == sizeof(float) -- see scmconfig.h.in" 1>&2
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3058 "configure" #line 3096 "configure"
#include "confdefs.h" #include "confdefs.h"
main () { exit (sizeof(float) != sizeof(long)); } main () { exit (sizeof(float) != sizeof(long)); }
EOF EOF
if { (eval echo configure:3062: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null if { (eval echo configure:3100: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
then then
cat >> confdefs.h <<\EOF cat >> confdefs.h <<\EOF
#define SCM_SINGLES 1 #define SCM_SINGLES 1
@ -3073,12 +3111,12 @@ fi
echo $ac_n "checking for struct linger""... $ac_c" 1>&6 echo $ac_n "checking for struct linger""... $ac_c" 1>&6
echo "configure:3077: checking for struct linger" >&5 echo "configure:3115: checking for struct linger" >&5
if eval "test \"`echo '$''{'scm_cv_struct_linger'+set}'`\" = set"; then if eval "test \"`echo '$''{'scm_cv_struct_linger'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3082 "configure" #line 3120 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <sys/types.h> #include <sys/types.h>
@ -3087,7 +3125,7 @@ int main() {
struct linger lgr; lgr.l_linger = 100 struct linger lgr; lgr.l_linger = 100
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3091: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3129: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_struct_linger="yes" scm_cv_struct_linger="yes"
else else
@ -3114,19 +3152,19 @@ fi
#-------------------------------------------------------------------- #--------------------------------------------------------------------
echo $ac_n "checking how to set a stream file descriptor""... $ac_c" 1>&6 echo $ac_n "checking how to set a stream file descriptor""... $ac_c" 1>&6
echo "configure:3118: checking how to set a stream file descriptor" >&5 echo "configure:3156: checking how to set a stream file descriptor" >&5
if eval "test \"`echo '$''{'scm_cv_fd_setter'+set}'`\" = set"; then if eval "test \"`echo '$''{'scm_cv_fd_setter'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3123 "configure" #line 3161 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
stdout->_file = 1 stdout->_file = 1
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3130: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3168: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_fd_setter="_file" scm_cv_fd_setter="_file"
else else
@ -3134,14 +3172,14 @@ else
cat conftest.$ac_ext >&5 cat conftest.$ac_ext >&5
rm -rf conftest* rm -rf conftest*
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3138 "configure" #line 3176 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
stdout->_fileno = 1 stdout->_fileno = 1
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3145: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3183: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_fd_setter="_fileno" scm_cv_fd_setter="_fileno"
else else
@ -3179,19 +3217,19 @@ fi
#-------------------------------------------------------------------- #--------------------------------------------------------------------
echo $ac_n "checking how to get buffer char count from FILE structure""... $ac_c" 1>&6 echo $ac_n "checking how to get buffer char count from FILE structure""... $ac_c" 1>&6
echo "configure:3183: checking how to get buffer char count from FILE structure" >&5 echo "configure:3221: checking how to get buffer char count from FILE structure" >&5
if eval "test \"`echo '$''{'scm_cv_struct_file_count'+set}'`\" = set"; then if eval "test \"`echo '$''{'scm_cv_struct_file_count'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3188 "configure" #line 3226 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
FILE *f = stdin; f->_cnt = 0 FILE *f = stdin; f->_cnt = 0
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3195: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3233: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_struct_file_count="_cnt" scm_cv_struct_file_count="_cnt"
else else
@ -3199,14 +3237,14 @@ else
cat conftest.$ac_ext >&5 cat conftest.$ac_ext >&5
rm -rf conftest* rm -rf conftest*
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3203 "configure" #line 3241 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
FILE *f = stdin; f->_r = 0 FILE *f = stdin; f->_r = 0
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3210: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3248: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_struct_file_count="_r" scm_cv_struct_file_count="_r"
else else
@ -3214,14 +3252,14 @@ else
cat conftest.$ac_ext >&5 cat conftest.$ac_ext >&5
rm -rf conftest* rm -rf conftest*
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3218 "configure" #line 3256 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
FILE *f = stdin; f->readCount = 0 FILE *f = stdin; f->readCount = 0
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3225: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3263: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_struct_file_count="readCount" scm_cv_struct_file_count="readCount"
else else
@ -3248,14 +3286,14 @@ if eval "test \"`echo '$''{'scm_cv_struct_file_gptr'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3252 "configure" #line 3290 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
FILE *f = stdin; f->_gptr = f->egptr; FILE *f = stdin; f->_gptr = f->egptr;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3259: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3297: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_struct_file_gptr=1 scm_cv_struct_file_gptr=1
else else
@ -3278,14 +3316,14 @@ if eval "test \"`echo '$''{'scm_cv_struct_file_readptr'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3282 "configure" #line 3320 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <stdio.h> #include <stdio.h>
int main() { int main() {
FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end; FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3289: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if { (eval echo configure:3327: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest* rm -rf conftest*
scm_cv_struct_file_readptr=1 scm_cv_struct_file_readptr=1
else else
@ -3315,7 +3353,7 @@ fi
echo $ac_n "checking "threads package type"""... $ac_c" 1>&6 echo $ac_n "checking "threads package type"""... $ac_c" 1>&6
echo "configure:3319: checking "threads package type"" >&5 echo "configure:3357: checking "threads package type"" >&5
if eval "test \"`echo '$''{'cy_cv_threads_package'+set}'`\" = set"; then if eval "test \"`echo '$''{'cy_cv_threads_package'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
@ -3374,7 +3412,7 @@ if test "$use_threads" != no; then
LDFLAGS="-L$use_threads/lib" LDFLAGS="-L$use_threads/lib"
LIBS="-lgthreads -lmalloc" LIBS="-lgthreads -lmalloc"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3378 "configure" #line 3416 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <pthread.h> #include <pthread.h>
int main() { int main() {
@ -3383,7 +3421,7 @@ pthread_equal(NULL,NULL);
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3387: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:3425: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
threads_package=FSU threads_package=FSU
else else
@ -3395,7 +3433,7 @@ rm -f conftest*
if test "$threads_package" = unknown; then if test "$threads_package" = unknown; then
LIBS="-lpthread" LIBS="-lpthread"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3399 "configure" #line 3437 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <pthread.h> #include <pthread.h>
int main() { int main() {
@ -3404,7 +3442,7 @@ pthread_equal(NULL,NULL);
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3408: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:3446: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
threads_package=MIT threads_package=MIT
else else
@ -3416,7 +3454,7 @@ rm -f conftest*
if test "$threads_package" = unknown; then if test "$threads_package" = unknown; then
LIBS="-lpthreads" LIBS="-lpthreads"
cat > conftest.$ac_ext <<EOF cat > conftest.$ac_ext <<EOF
#line 3420 "configure" #line 3458 "configure"
#include "confdefs.h" #include "confdefs.h"
#include <pthread.h> #include <pthread.h>
int main() { int main() {
@ -3425,7 +3463,7 @@ pthread_equal(NULL,NULL);
; return 0; } ; return 0; }
EOF EOF
if { (eval echo configure:3429: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then if { (eval echo configure:3467: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
rm -rf conftest* rm -rf conftest*
threads_package=PCthreads threads_package=PCthreads
else else
@ -3505,7 +3543,7 @@ do
# Extract the first word of "$ac_prog", so it can be a program name with args. # Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2 set dummy $ac_prog; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:3509: checking for $ac_word" >&5 echo "configure:3547: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6 echo $ac_n "(cached) $ac_c" 1>&6
else else
@ -3570,7 +3608,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
fi fi
echo $ac_n "checking host system type""... $ac_c" 1>&6 echo $ac_n "checking host system type""... $ac_c" 1>&6
echo "configure:3574: checking host system type" >&5 echo "configure:3612: checking host system type" >&5
host_alias=$host host_alias=$host
case "$host_alias" in case "$host_alias" in
@ -4029,7 +4067,6 @@ fi; done
EOF EOF
cat >> $CONFIG_STATUS <<EOF cat >> $CONFIG_STATUS <<EOF
EOF EOF
cat >> $CONFIG_STATUS <<\EOF cat >> $CONFIG_STATUS <<\EOF
test -z "$CONFIG_HEADERS" || echo timestamp > libguile/stamp-h test -z "$CONFIG_HEADERS" || echo timestamp > libguile/stamp-h

16
configure.in
View file

@ -51,7 +51,21 @@ AC_TYPE_GETGROUPS
AC_TYPE_SIGNAL AC_TYPE_SIGNAL
AC_TYPE_MODE_T AC_TYPE_MODE_T
AC_CHECK_FUNCS(ctermid ftime getcwd geteuid gethostent gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid) AC_CHECK_FUNCS(ctermid ftime getcwd geteuid gethostent gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid)
AC_CACHE_CHECK([for restartable system calls], scm_cv_restarts,
if test $ac_cv_func_sigaction = yes; then
[AC_TRY_COMPILE([#include <signal.h>],
[int a = SA_RESTART],
scm_cv_restarts=yes,
scm_cv_restarts=no)]
else
scm_cv_restarts=no
fi)
if test $scm_cv_restarts = yes; then
AC_DEFINE(HAVE_RESTARTS)
fi
AC_CHECK_FUNCS(regcomp, [LIBOBJS="regex-posix.o $LIBOBJS"]) AC_CHECK_FUNCS(regcomp, [LIBOBJS="regex-posix.o $LIBOBJS"])

7
ice-9/ChangeLog
View file

@ -1,3 +1,10 @@
Sat May 31 18:57:12 1997 Gary Houston <ghouston@actrix.gen.nz>
* boot-9.scm: signal-handler, alarm-thunk: removed.
don't define ticks-interrupt etc.
top-repl: install signal handlers for SIGINT, SIGFPE, SIGSEGV, SIGBUS
during call to scm-style-repl.
Fri May 30 18:08:10 1997 Jim Blandy <jimb@floss.cyclic.com> Fri May 30 18:08:10 1997 Jim Blandy <jimb@floss.cyclic.com>
* slib.scm (slib:load): Use primitive-load-path instead of * slib.scm (slib:load): Use primitive-load-path instead of

158
ice-9/boot-9.scm
View file

@ -568,76 +568,6 @@
(or (and default (apply default key args)) (or (and default (apply default key args))
(apply error "unhandled-exception:" key args)))) (apply error "unhandled-exception:" key args))))
;; mostly obsolete.
;; A number of internally defined error types were represented
;; as integers. Here is the mapping to symbolic names
;; and error messages.
;;
;(define %%system-errors
; '((-1 UNKNOWN "Unknown error")
; (0 ARGn "Wrong type argument to ")
; (1 ARG1 "Wrong type argument in position 1 to ")
; (2 ARG2 "Wrong type argument in position 2 to ")
; (3 ARG3 "Wrong type argument in position 3 to ")
; (4 ARG4 "Wrong type argument in position 4 to ")
; (5 ARG5 "Wrong type argument in position 5 to ")
; (6 ARG5 "Wrong type argument in position 5 to ")
; (7 ARG5 "Wrong type argument in position 5 to ")
; (8 WNA "Wrong number of arguments to ")
; (9 OVFLOW "Numerical overflow to ")
; (10 OUTOFRANGE "Argument out of range to ")
; (11 NALLOC "Could not allocate to ")
; (12 STACK_OVFLOW "Stack overflow")
; (13 EXIT "Exit (internal error?).")
; (14 HUP_SIGNAL "hang-up")
; (15 INT_SIGNAL "user interrupt")
; (16 FPE_SIGNAL "arithmetic error")
; (17 BUS_SIGNAL "bus error")
; (18 SEGV_SIGNAL "segmentation violation")
; (19 ALRM_SIGNAL "alarm")
; (20 GC_SIGNAL "gc")
; (21 TICK_SIGNAL "tick")))
(define (alarm-thunk) #t)
(define (signal-handler n)
(let* (
;; these numbers are set in libguile, not the same as those
;; interned in posix.c for SIGSEGV etc.
;;
(signal-messages `((14 . "hang-up")
(15 . "user interrupt")
(16 . "arithmetic error")
(17 . "bus error")
(18 . "segmentation violation"))))
(cond
((= n 21) (unmask-signals) (timer-thunk))
((= n 20) (unmask-signals) (gc-thunk))
((= n 19) (unmask-signals) (alarm-thunk))
(else (set! the-last-stack
(make-stack #t
(list-ref (list %hup-thunk
%int-thunk
%fpe-thunk
%bus-thunk
%segv-thunk)
(- n 14))
1))
(set! stack-saved? #t)
(if (not (and (memq 'debug (debug-options-interface))
(eq? (stack-id the-last-stack) 'repl-stack)))
(set! the-last-stack #f))
(unmask-signals)
(let ((sig-pair (assoc n signal-messages)))
(scm-error 'error-signal #f
(cdr (or sig-pair
(cons n "Unknown signal: %s")))
(if sig-pair
#f
(list n))
(list n)))))))
;;; {Non-polymorphic versions of POSIX functions} ;;; {Non-polymorphic versions of POSIX functions}
@ -909,21 +839,6 @@
(define (log10 arg) (define (log10 arg)
(/ (log arg) (log 10))) (/ (log arg) (log 10)))
;;; {User Settable Hooks}
;;;
;;; Parts of the C code check the bindings of these variables.
;;;
(define ticks-interrupt #f)
(define user-interrupt #f)
(define alarm-interrupt #f)
(define out-of-storage #f)
(define could-not-open #f)
(define end-of-program #f)
(define hang-up #f)
(define arithmetic-error #f)
;;; {Reader Extensions} ;;; {Reader Extensions}
@ -979,31 +894,6 @@
'() '()
(parse-path-symbol (read port)))))) (parse-path-symbol (read port))))))
;(define (read-sharp c port)
; (define (barf)
; (error "unknown # object" c))
; (case c
; ((#\/) (let ((look (peek-char port)))
; (if (or (eof-object? look)
; (and (char? look)
; (or (char-whitespace? look)
; (string-index ")" look))))
; '()
; (parse-path-symbol (read port #t read-sharp)))))
; ((#\') (read port #t read-sharp))
; ((#\.) (eval (read port #t read-sharp)))
; ((#\b) (read:uniform-vector #t port))
; ((#\a) (read:uniform-vector #\a port))
; ((#\u) (read:uniform-vector 1 port))
; ((#\e) (read:uniform-vector -1 port))
; ((#\s) (read:uniform-vector 1.0 port))
; ((#\i) (read:uniform-vector 1/3 port))
; ((#\c) (read:uniform-vector 0+i port))
; ((#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9)
; (read:array c port))
; (else (barf))))
(define (read:array digit port) (define (read:array digit port)
(define chr0 (char->integer #\0)) (define chr0 (char->integer #\0))
(let ((rank (let readnum ((val (- (char->integer digit) chr0))) (let ((rank (let readnum ((val (- (char->integer digit) chr0)))
@ -2424,13 +2314,6 @@
(-quit status)))) (-quit status))))
;(define (stand-alone-repl)
; (let ((oport (current-input-port)))
; (set-current-input-port *stdin*)
; (scm-style-repl)
; (set-current-input-port oport)))
;;; {IOTA functions: generating lists of numbers} ;;; {IOTA functions: generating lists of numbers}
@ -2603,8 +2486,47 @@
;; (set-current-output-port outp) ;; (set-current-output-port outp)
;; (set-current-error-port errp) ;; (set-current-error-port errp)
;; this is just (scm-style-repl) with a wrapper to install and remove
;; signal handlers.
(define (top-repl) (define (top-repl)
(scm-style-repl)) (let ((old-handlers #f)
(signals `((,SIGINT . "User interrupt")
(,SIGFPE . "Arithmetic error")
(,SIGBUS . "Bad memory access (bus error)")
(,SIGSEGV . "Bad memory access (Segmentation violation)"))))
(dynamic-wind
;; call at entry
(lambda ()
(let ((make-handler (lambda (msg)
(lambda (sig)
(scm-error 'signal
#f
msg
#f
(list sig))))))
(set! old-handlers
(map (lambda (sig-msg)
(sigaction (car sig-msg)
(make-handler (cdr sig-msg))))
signals))))
;; the protected thunk.
(lambda ()
(scm-style-repl))
;; call at exit.
(lambda ()
(map (lambda (sig-msg old-handler)
(if (not (car old-handler))
;; restore original C handler.
(sigaction (car sig-msg) #f)
;; restore Scheme handler, SIG_IGN or SIG_DFL.
(sigaction (car sig-msg)
(car old-handler)
(cdr old-handler))))
signals old-handlers)))))
(defmacro false-if-exception (expr) (defmacro false-if-exception (expr)
`(catch #t (lambda () ,expr) `(catch #t (lambda () ,expr)

29
libguile/ChangeLog
View file

@ -1,3 +1,32 @@
Sat May 31 18:57:51 1997 Gary Houston <ghouston@actrix.gen.nz>
* scmsigs.h, async.h: updated.
* _scm.h: if HAVE_RESTARTS is defined then don't use a SYSCALL
loop.
* posix.c (scm_uname): interpret only negative values as an error.
Solaris normally returns a positive value.
* script.c (scm_compile_shell_switches): if we are not going into
an interactive repl, set scm_mask_ints to zero so that asyncs can
run.
* simpos.c (scm_system): don't ignore/unignore signals around
the "system" call.
* posix.c (scm_open_pipe): don't ignore/unignore signals around
the "popen" call.
* init.c (scm_boot_guile_1): don't call scm_init_signals, it's
done in boot-9.scm instead.
* scmsigs.c, async.c: Major rewriting of signal handling code.
(scm_sigaction): new procedure.
(scm_sleep): don't wrap sleep in SCM_SYSCALL, it would mess up the
timing.
(scm_raise): return unspecified, throw error on failure.
Thu May 29 02:47:36 1997 Jim Blandy <jimb@floss.cyclic.com> Thu May 29 02:47:36 1997 Jim Blandy <jimb@floss.cyclic.com>
* regex-posix.c (scm_init_regex_posix): Register the "regex" * regex-posix.c (scm_init_regex_posix): Register the "regex"

16
libguile/_scm.h
View file

@ -76,7 +76,18 @@
*/ */
#include <errno.h> #include <errno.h>
/* SCM_SYSCALL retries system calls that have been interrupted (EINTR) */ /* SCM_SYSCALL retries system calls that have been interrupted (EINTR).
However this can be avoided if the operating system can restart
system calls automatically. We assume this is the case if
sigaction is available and SA_RESTART is defined; they will be used
when installing signal handlers.
*/
#ifdef HAVE_RESTARTS
#define SCM_SYSCALL(line) line
#endif
#ifndef SCM_SYSCALL
#ifdef vms #ifdef vms
# ifndef __GNUC__ # ifndef __GNUC__
# include <ssdef.h> # include <ssdef.h>
@ -84,6 +95,7 @@
while(EVMSERR==errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3)) while(EVMSERR==errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3))
# endif /* ndef __GNUC__ */ # endif /* ndef __GNUC__ */
#endif /* def vms */ #endif /* def vms */
#endif /* ndef SCM_SYSCALL */
#ifndef SCM_SYSCALL #ifndef SCM_SYSCALL
# ifdef EINTR # ifdef EINTR
@ -94,7 +106,7 @@
#endif /* ndef SCM_SYSCALL */ #endif /* ndef SCM_SYSCALL */
#ifndef SCM_SYSCALL #ifndef SCM_SYSCALL
# define SCM_SYSCALL(line) {line;} # define SCM_SYSCALL(line) line;
#endif /* ndef SCM_SYSCALL */ #endif /* ndef SCM_SYSCALL */
#ifndef MSDOS #ifndef MSDOS

157
libguile/async.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996 Free Software Foundation, Inc. /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -100,26 +100,8 @@ static unsigned int scm_switch_clock = 0;
static unsigned int scm_switch_rate = 0; static unsigned int scm_switch_rate = 0;
static unsigned int scm_desired_switch_rate = 0; static unsigned int scm_desired_switch_rate = 0;
static SCM system_signal_asyncs[SCM_NUM_SIGS];
static SCM handler_var;
static SCM symbol_signal;
struct scm_async
{
int got_it; /* needs to be delivered? */
SCM thunk; /* the handler. */
};
static long scm_tc16_async; static long scm_tc16_async;
#define SCM_ASYNCP(X) (scm_tc16_async == SCM_GCTYP16 (X))
#define SCM_ASYNC(X) ((struct scm_async *)SCM_CDR (X))
static int asyncs_pending SCM_P ((void)); static int asyncs_pending SCM_P ((void));
@ -281,30 +263,8 @@ scm_switch ()
#endif #endif
} }
static void scm_deliver_signal SCM_P ((int num));
static void
scm_deliver_signal (num)
int num;
{
SCM handler;
handler = SCM_CDR (handler_var);
if (handler != SCM_BOOL_F)
scm_apply (handler, SCM_MAKINUM (num), scm_listofnull);
else
{
scm_mask_ints = 0;
scm_throw (symbol_signal,
scm_listify (SCM_MAKINUM (num), SCM_UNDEFINED));
}
}
static int print_async SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); static int print_async SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
static int static int
@ -514,66 +474,6 @@ scm_set_switch_rate (n)
static SCM scm_sys_hup_async_thunk SCM_P ((void));
static SCM
scm_sys_hup_async_thunk ()
{
scm_deliver_signal (SCM_HUP_SIGNAL);
return SCM_BOOL_F;
}
static SCM scm_sys_int_async_thunk SCM_P ((void));
static SCM
scm_sys_int_async_thunk ()
{
scm_deliver_signal (SCM_INT_SIGNAL);
return SCM_BOOL_F;
}
static SCM scm_sys_fpe_async_thunk SCM_P ((void));
static SCM
scm_sys_fpe_async_thunk ()
{
scm_deliver_signal (SCM_FPE_SIGNAL);
return SCM_BOOL_F;
}
static SCM scm_sys_bus_async_thunk SCM_P ((void));
static SCM
scm_sys_bus_async_thunk ()
{
scm_deliver_signal (SCM_BUS_SIGNAL);
return SCM_BOOL_F;
}
static SCM scm_sys_segv_async_thunk SCM_P ((void));
static SCM
scm_sys_segv_async_thunk ()
{
scm_deliver_signal (SCM_SEGV_SIGNAL);
return SCM_BOOL_F;
}
static SCM scm_sys_alrm_async_thunk SCM_P ((void));
static SCM
scm_sys_alrm_async_thunk ()
{
scm_deliver_signal (SCM_ALRM_SIGNAL);
return SCM_BOOL_F;
}
/* points to the GC system-async, so that scm_gc_end can find it. */ /* points to the GC system-async, so that scm_gc_end can find it. */
SCM scm_gc_async; SCM scm_gc_async;
@ -597,32 +497,6 @@ scm_sys_gc_async_thunk (void)
SCM
scm_take_signal (n)
int n;
{
SCM ignored;
if (!scm_ints_disabled)
{
/* For reasons of speed, the SCM_NEWCELL macro doesn't defer
interrupts. Instead, it first sets its argument to point to
the first cell in the list, and then advances the freelist
pointer to the next cell. Now, if this procedure is
interrupted, the only anomalous state possible is to have
both SCM_NEWCELL's argument and scm_freelist pointing to the
same cell. To deal with this case, we always throw away the
first cell in scm_freelist here.
At least, that's the theory. I'm not convinced that that's
the only anomalous path we need to worry about. */
SCM_NEWCELL (ignored);
}
scm_system_async_mark (system_signal_asyncs[SCM_SIG_ORD(n)]);
return SCM_BOOL_F;
}
SCM_PROC(s_unmask_signals, "unmask-signals", 0, 0, 0, scm_unmask_signals); SCM_PROC(s_unmask_signals, "unmask-signals", 0, 0, 0, scm_unmask_signals);
SCM SCM
@ -649,39 +523,10 @@ scm_init_async ()
{ {
SCM a_thunk; SCM a_thunk;
scm_tc16_async = scm_newsmob (&async_smob); scm_tc16_async = scm_newsmob (&async_smob);
symbol_signal = SCM_CAR (scm_sysintern ("signal", SCM_UNDEFINED));
scm_permanent_object (symbol_signal);
/* These are in the opposite order of delivery priortity.
*
* Error conditions are given low priority:
*/
a_thunk = scm_make_gsubr ("%hup-thunk", 0, 0, 0, scm_sys_hup_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_HUP_SIGNAL)] = scm_system_async (a_thunk);
a_thunk = scm_make_gsubr ("%int-thunk", 0, 0, 0, scm_sys_int_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_INT_SIGNAL)] = scm_system_async (a_thunk);
a_thunk = scm_make_gsubr ("%fpe-thunk", 0, 0, 0, scm_sys_fpe_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_FPE_SIGNAL)] = scm_system_async (a_thunk);
a_thunk = scm_make_gsubr ("%bus-thunk", 0, 0, 0, scm_sys_bus_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_BUS_SIGNAL)] = scm_system_async (a_thunk);
a_thunk = scm_make_gsubr ("%segv-thunk", 0, 0, 0, scm_sys_segv_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_SEGV_SIGNAL)] = scm_system_async (a_thunk);
scm_gc_vcell = scm_sysintern ("gc-thunk", SCM_BOOL_F); scm_gc_vcell = scm_sysintern ("gc-thunk", SCM_BOOL_F);
a_thunk = scm_make_gsubr ("%gc-thunk", 0, 0, 0, scm_sys_gc_async_thunk); a_thunk = scm_make_gsubr ("%gc-thunk", 0, 0, 0, scm_sys_gc_async_thunk);
scm_gc_async = scm_system_async (a_thunk); scm_gc_async = scm_system_async (a_thunk);
/* Clock and PC driven conditions are given highest priority. */
/*
a_thunk = scm_make_gsubr ("%tick-thunk", 0, 0, 0, scm_sys_tick_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_TICK_SIGNAL)] = scm_system_async (a_thunk);
*/
a_thunk = scm_make_gsubr ("%alrm-thunk", 0, 0, 0, scm_sys_alrm_async_thunk);
system_signal_asyncs[SCM_SIG_ORD(SCM_ALRM_SIGNAL)] = scm_system_async (a_thunk);
handler_var = scm_sysintern ("signal-handler", SCM_UNDEFINED);
SCM_SETCDR (handler_var, SCM_BOOL_F);
scm_permanent_object (handler_var);
#include "async.x" #include "async.x"
} }

13
libguile/async.h
View file

@ -2,7 +2,7 @@
#ifndef ASYNCH #ifndef ASYNCH
#define ASYNCH #define ASYNCH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc. /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -47,6 +47,16 @@
#include "libguile/__scm.h" #include "libguile/__scm.h"
#define SCM_ASYNCP(X) (scm_tc16_async == SCM_GCTYP16 (X))
#define SCM_ASYNC(X) ((struct scm_async *)SCM_CDR (X))
struct scm_async
{
int got_it; /* needs to be delivered? */
SCM thunk; /* the handler. */
};
extern unsigned int scm_mask_ints; extern unsigned int scm_mask_ints;
@ -63,7 +73,6 @@ extern SCM scm_run_asyncs SCM_P ((SCM list_of_a));
extern SCM scm_noop SCM_P ((SCM args)); extern SCM scm_noop SCM_P ((SCM args));
extern SCM scm_set_tick_rate SCM_P ((SCM n)); extern SCM scm_set_tick_rate SCM_P ((SCM n));
extern SCM scm_set_switch_rate SCM_P ((SCM n)); extern SCM scm_set_switch_rate SCM_P ((SCM n));
extern SCM scm_take_signal SCM_P ((int n));
extern SCM scm_unmask_signals SCM_P ((void)); extern SCM scm_unmask_signals SCM_P ((void));
extern SCM scm_mask_signals SCM_P ((void)); extern SCM scm_mask_signals SCM_P ((void));
extern void scm_init_async SCM_P ((void)); extern void scm_init_async SCM_P ((void));

2
libguile/init.c
View file

@ -473,8 +473,6 @@ scm_boot_guile_1 (base, closure)
setjmp_val = setjmp (SCM_JMPBUF (scm_rootcont)); setjmp_val = setjmp (SCM_JMPBUF (scm_rootcont));
if (!setjmp_val) if (!setjmp_val)
{ {
scm_init_signals ();
scm_set_program_arguments (closure->argc, closure->argv, 0); scm_set_program_arguments (closure->argc, closure->argv, 0);
scm_internal_catch (SCM_BOOL_T, invoke_main_func, closure, scm_internal_catch (SCM_BOOL_T, invoke_main_func, closure,
scm_handle_by_message, 0); scm_handle_by_message, 0);

4
libguile/posix.c
View file

@ -811,7 +811,7 @@ scm_uname ()
SCM ans = scm_make_vector(SCM_MAKINUM(5), SCM_UNSPECIFIED, SCM_BOOL_F); SCM ans = scm_make_vector(SCM_MAKINUM(5), SCM_UNSPECIFIED, SCM_BOOL_F);
SCM *ve = SCM_VELTS (ans); SCM *ve = SCM_VELTS (ans);
SCM_DEFER_INTS; SCM_DEFER_INTS;
if (uname (&buf)) if (uname (&buf) < 0)
scm_syserror (s_uname); scm_syserror (s_uname);
ve[0] = scm_makfrom0str (buf.sysname); ve[0] = scm_makfrom0str (buf.sysname);
ve[1] = scm_makfrom0str (buf.nodename); ve[1] = scm_makfrom0str (buf.nodename);
@ -921,9 +921,7 @@ scm_open_pipe (pipestr, modes)
modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0); modes = scm_makfromstr (SCM_ROCHARS (modes), SCM_ROLENGTH (modes), 0);
SCM_NEWCELL (z); SCM_NEWCELL (z);
SCM_DEFER_INTS; SCM_DEFER_INTS;
scm_ignore_signals ();
SCM_SYSCALL (f = popen (SCM_ROCHARS (pipestr), SCM_ROCHARS (modes))); SCM_SYSCALL (f = popen (SCM_ROCHARS (pipestr), SCM_ROCHARS (modes)));
scm_unignore_signals ();
if (!f) if (!f)
scm_syserror (s_open_pipe); scm_syserror (s_open_pipe);
pt = scm_add_to_port_table (z); pt = scm_add_to_port_table (z);

6
libguile/scmconfig.h.in
View file

@ -158,6 +158,9 @@
/* Define if you want support for dynamic linking. */ /* Define if you want support for dynamic linking. */
#undef DYNAMIC_LINKING #undef DYNAMIC_LINKING
/* Define if the operating system can restart system calls. */
#undef HAVE_RESTARTS
/* Define if you have the ctermid function. */ /* Define if you have the ctermid function. */
#undef HAVE_CTERMID #undef HAVE_CTERMID
@ -227,6 +230,9 @@
/* Define if you have the shl_load function. */ /* Define if you have the shl_load function. */
#undef HAVE_SHL_LOAD #undef HAVE_SHL_LOAD
/* Define if you have the sigaction function. */
#undef HAVE_SIGACTION
/* Define if you have the strerror function. */ /* Define if you have the strerror function. */
#undef HAVE_STRERROR #undef HAVE_STRERROR

520
libguile/scmsigs.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996 Free Software Foundation, Inc. /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -44,6 +44,8 @@
#include <signal.h> #include <signal.h>
#include "_scm.h" #include "_scm.h"
#include "async.h"
#include "eval.h"
#include "scmsigs.h" #include "scmsigs.h"
#ifdef HAVE_UNISTD_H #ifdef HAVE_UNISTD_H
@ -53,10 +55,6 @@
#if (__TURBOC__==1)
#define signal ssignal /* Needed for TURBOC V1.0 */
#endif
#ifdef USE_MIT_PTHREADS #ifdef USE_MIT_PTHREADS
#undef signal #undef signal
#define signal pthread_signal #define signal pthread_signal
@ -64,81 +62,254 @@
/* SIGRETTYPE is the type that signal handlers return. See <signal.h>*/ /* SIGRETTYPE is the type that signal handlers return. See <signal.h> */
#ifdef RETSIGTYPE #ifdef RETSIGTYPE
#define SIGRETTYPE RETSIGTYPE # define SIGRETTYPE RETSIGTYPE
#else #else
#ifdef STDC_HEADERS # ifdef STDC_HEADERS
#if (__TURBOC__==1) # define SIGRETTYPE void
#define SIGRETTYPE int # else
#else # define SIGRETTYPE int
#define SIGRETTYPE void # endif
#endif
#else
#ifdef linux
#define SIGRETTYPE void
#else
#define SIGRETTYPE int
#endif
#endif
#endif
#ifdef vms
#ifdef __GNUC__
#define SIGRETTYPE int
#endif
#endif #endif
#define SIGFN(NAME, SCM_NAME, SIGNAL) \ /* take_signal is installed as the C signal handler whenever a Scheme
static SIGRETTYPE \ handler is set. when a signal arrives, take_signal marks the corresponding
NAME (sig) \ element of got_signal and marks signal_async. the thunk in signal_async
int sig; \ (sys_deliver_signals) will be run at the next opportunity, outside a
{ \ critical section. sys_deliver_signals runs each Scheme handler for
signal (SIGNAL, NAME); \ which got_signal is set. */
scm_take_signal (SCM_NAME); \
static SCM signal_async;
static char got_signal[NSIG];
/* a Scheme vector of handler procedures. */
static SCM *signal_handlers;
/* saves the original C handlers, when a new handler is installed.
set to SIG_ERR if the original handler is installed. */
#ifdef HAVE_SIGACTION
static struct sigaction orig_handlers[NSIG];
#else
static SIGRETTYPE (*orig_handlers)(int)[NSIG];
#endif
static SIGRETTYPE
take_signal (int signum)
{
SCM ignored;
if (!scm_ints_disabled)
{
/* For reasons of speed, the SCM_NEWCELL macro doesn't defer
interrupts. Instead, it first sets its argument to point to
the first cell in the list, and then advances the freelist
pointer to the next cell. Now, if this procedure is
interrupted, the only anomalous state possible is to have
both SCM_NEWCELL's argument and scm_freelist pointing to the
same cell. To deal with this case, we always throw away the
first cell in scm_freelist here.
At least, that's the theory. I'm not convinced that that's
the only anomalous path we need to worry about. */
SCM_NEWCELL (ignored);
}
got_signal[signum] = 1;
#if HAVE_SIGACTION
/* unblock the signal before the scheme handler gets to run, since
it may use longjmp to escape (i.e., throw an exception). */
{
sigset_t set;
sigemptyset (&set);
sigaddset (&set, signum);
sigprocmask (SIG_UNBLOCK, &set, NULL);
}
#endif
scm_system_async_mark (signal_async);
} }
#ifdef SIGHUP static SCM
SIGFN(scm_hup_signal, SCM_HUP_SIGNAL, SIGHUP) sys_deliver_signals (void)
#endif {
int i;
#ifdef SIGINT for (i = 0; i < NSIG; i++)
SIGFN(scm_int_signal, SCM_INT_SIGNAL, SIGINT) {
if (got_signal[i])
{
scm_apply (SCM_VELTS (*signal_handlers)[i],
scm_listify (SCM_MAKINUM (i), SCM_UNDEFINED),
SCM_EOL);
got_signal[i] = 0;
#ifndef HAVE_SIGACTION
signal (i, take_signal);
#endif #endif
}
#ifdef SIGFPE }
SIGFN(scm_fpe_signal, SCM_FPE_SIGNAL, SIGFPE) return SCM_UNSPECIFIED;
#endif
#ifdef SIGBUS
SIGFN(scm_bus_signal, SCM_BUS_SIGNAL, SIGBUS)
#endif
#ifdef SIGSEGV
SIGFN(scm_segv_signal, SCM_SEGV_SIGNAL, SIGSEGV)
#endif
#ifdef SIGALRM
SIGFN(scm_alrm_signal, SCM_ALRM_SIGNAL, SIGALRM)
#endif
#define FAKESIGFN(NAME, SCM_NAME) \
static SIGRETTYPE \
NAME (sig) \
int sig; \
{ \
scm_take_signal (SCM_NAME); \
} }
#if 0 /* user interface for installation of signal handlers. */
/* !!! */ SCM_PROC(s_sigaction, "sigaction", 1, 2, 0, scm_sigaction);
FAKESIGFN(scm_gc_signal, SCM_GC_SIGNAL) SCM
FAKESIGFN(scm_tick_signal, SCM_TICK_SIGNAL) scm_sigaction (SCM signum, SCM handler, SCM flags)
{
int csig;
#ifdef HAVE_SIGACTION
struct sigaction action;
struct sigaction old_action;
#else
SIGRETTYPE (* chandler) (int);
SIGRETTYPE (* old_chandler) (int);
#endif #endif
int query_only = 0;
int save_handler = 0;
SCM *scheme_handlers = SCM_VELTS (*signal_handlers);
SCM old_handler;
SCM_ASSERT (SCM_INUMP (signum), signum, SCM_ARG1, s_sigaction);
csig = SCM_INUM (signum);
#ifdef HAVE_SIGACTION
/* always use restartable system calls if available. */
#ifdef SA_RESTART
action.sa_flags = SA_RESTART;
#else
action.sa_flags = 0;
#endif
if (!SCM_UNBNDP (flags))
{
SCM_ASSERT (SCM_INUMP (flags), flags, SCM_ARG3, s_sigaction);
action.sa_flags |= SCM_INUM (flags);
}
sigemptyset (&action.sa_mask);
#endif
SCM_DEFER_INTS;
old_handler = scheme_handlers[csig];
if (SCM_UNBNDP (handler))
query_only = 1;
else if (SCM_INUMP (handler))
{
if (SCM_INUM (handler) == (int) SIG_DFL
|| SCM_INUM (handler) == (int) SIG_IGN)
{
#ifdef HAVE_SIGACTION
action.sa_handler = (SIGRETTYPE (*) (int)) SCM_INUM (handler);
#else
chandler = (SIGRETTYPE (*) (int)) SCM_INUM (handler);
#endif
scheme_handlers[csig] = SCM_BOOL_F;
}
else
scm_out_of_range (s_sigaction, handler);
}
else if (SCM_FALSEP (handler))
{
/* restore the default handler. */
#ifdef HAVE_SIGACTION
if (orig_handlers[csig].sa_handler == SIG_ERR)
query_only = 1;
else
{
action = orig_handlers[csig];
orig_handlers[csig].sa_handler = SIG_ERR;
scheme_handlers[csig] = SCM_BOOL_F;
}
#else
if (orig_handlers[csig] == SIG_ERR)
query_only = 1;
else
{
chandler = orig_handlers[csig];
orig_handlers[csig] = SIG_ERR;
scheme_handlers[csig] = SCM_BOOL_F;
}
#endif
}
else
{
SCM_ASSERT (SCM_NIMP (handler), handler, SCM_ARG2, s_sigaction);
#ifdef HAVE_SIGACTION
action.sa_handler = take_signal;
if (orig_handlers[csig].sa_handler == SIG_ERR)
save_handler = 1;
#else
chandler = take_signal;
if (orig_handlers[csig] == SIG_ERR)
save_handler = 1;
#endif
scheme_handlers[csig] = handler;
}
#ifdef HAVE_SIGACTION
if (query_only)
{
if (sigaction (csig, 0, &old_action) == -1)
scm_syserror (s_sigaction);
}
else
{
if (sigaction (csig, &action , &old_action) == -1)
scm_syserror (s_sigaction);
if (save_handler)
orig_handlers[csig] = old_action;
}
if (old_action.sa_handler == SIG_DFL || old_action.sa_handler == SIG_IGN)
old_handler = SCM_MAKINUM ((int) old_action.sa_handler);
SCM_ALLOW_INTS;
return scm_cons (old_handler, SCM_MAKINUM (old_action.sa_flags));
#else
if (query_only)
{
if ((old_chandler = signal (csig, SIG_IGN)) == SIG_ERR)
scm_syserror (s_sigaction);
if (signal (csig, old_chandler) == SIG_ERR)
scm_syserror (s_sigaction);
}
else
{
if ((old_chandler = signal (csig, chandler)) == SIG_ERR)
scm_syserror (s_sigaction);
if (save_handler)
orig_handlers[csig] = old_chandler;
}
if (old_chandler == SIG_DFL || old_chandler == SIG_IGN)
old_handler = SCM_MAKINUM ((int) old_chandler);
SCM_ALLOW_INTS;
return scm_cons (old_handler, SCM_MAKINUM (0));
#endif
}
SCM_PROC (s_restore_signals, "restore-signals", 0, 0, 0, scm_restore_signals);
SCM
scm_restore_signals (void)
{
int i;
SCM *scheme_handlers = SCM_VELTS (*signal_handlers);
for (i = 0; i < NSIG; i++)
{
#ifdef HAVE_SIGACTION
if (orig_handlers[i].sa_handler != SIG_ERR)
{
if (sigaction (i, &orig_handlers[i], NULL) == -1)
scm_syserror (s_restore_signals);
orig_handlers[i].sa_handler = SIG_ERR;
scheme_handlers[i] = SCM_BOOL_F;
}
#else
if (orig_handlers[i] != SIG_ERR)
{
if (signal (i, orig_handlers[i]) == SIG_ERR)
scm_syserror (s_restore_signals);
orig_handlers[i] = SIG_ERR;
scheme_handlers[i] = SCM_BOOL_F;
}
#endif
}
return SCM_UNSPECIFIED;
}
SCM_PROC(s_alarm, "alarm", 1, 0, 0, scm_alarm); SCM_PROC(s_alarm, "alarm", 1, 0, 0, scm_alarm);
@ -148,11 +319,10 @@ scm_alarm (i)
{ {
unsigned int j; unsigned int j;
SCM_ASSERT (SCM_INUMP (i) && (SCM_INUM (i) >= 0), i, SCM_ARG1, s_alarm); SCM_ASSERT (SCM_INUMP (i) && (SCM_INUM (i) >= 0), i, SCM_ARG1, s_alarm);
SCM_SYSCALL (j = alarm (SCM_INUM (i))); j = alarm (SCM_INUM (i));
return SCM_MAKINUM (j); return SCM_MAKINUM (j);
} }
SCM_PROC(s_pause, "pause", 0, 0, 0, scm_pause); SCM_PROC(s_pause, "pause", 0, 0, 0, scm_pause);
SCM SCM
@ -170,11 +340,7 @@ scm_sleep (i)
{ {
unsigned int j; unsigned int j;
SCM_ASSERT (SCM_INUMP (i) && (SCM_INUM (i) >= 0), i, SCM_ARG1, s_sleep); SCM_ASSERT (SCM_INUMP (i) && (SCM_INUM (i) >= 0), i, SCM_ARG1, s_sleep);
#ifdef __HIGHC__ j = sleep (SCM_INUM(i));
SCM_SYSCALL(j = 0; sleep(SCM_INUM(i)););
#else
SCM_SYSCALL(j = sleep(SCM_INUM(i)););
#endif
return SCM_MAKINUM (j); return SCM_MAKINUM (j);
} }
@ -185,184 +351,50 @@ scm_raise(sig)
SCM sig; SCM sig;
{ {
SCM_ASSERT(SCM_INUMP(sig), sig, SCM_ARG1, s_raise); SCM_ASSERT(SCM_INUMP(sig), sig, SCM_ARG1, s_raise);
# ifdef vms SCM_DEFER_INTS;
return SCM_MAKINUM(gsignal((int)SCM_INUM(sig))); if (kill (getpid (), (int) SCM_INUM (sig)) != 0)
# else scm_syserror (s_raise);
return kill (getpid(), (int)SCM_INUM(sig)) ? SCM_BOOL_F : SCM_BOOL_T; SCM_ALLOW_INTS;
# endif
}
#ifdef SIGHUP
static SIGRETTYPE (*oldhup) ();
#endif
#ifdef SIGINT
static SIGRETTYPE (*oldint) ();
#endif
#ifdef SIGFPE
static SIGRETTYPE (*oldfpe) ();
#endif
#ifdef SIGBUS
static SIGRETTYPE (*oldbus) ();
#endif
#ifdef SIGSEGV /* AMIGA lacks! */
static SIGRETTYPE (*oldsegv) ();
#endif
#ifdef SIGALRM
static SIGRETTYPE (*oldalrm) ();
#endif
#ifdef SIGPIPE
static SIGRETTYPE (*oldpipe) ();
#endif
void
scm_init_signals ()
{
#ifdef SIGINT
oldint = signal (SIGINT, scm_int_signal);
#endif
#ifdef SIGHUP
oldhup = signal (SIGHUP, scm_hup_signal);
#endif
#ifdef SIGFPE
oldfpe = signal (SIGFPE, scm_fpe_signal);
#endif
#ifdef SIGBUS
oldbus = signal (SIGBUS, scm_bus_signal);
#endif
#ifdef SIGSEGV /* AMIGA lacks! */
oldsegv = signal (SIGSEGV, scm_segv_signal);
#endif
#ifdef SIGALRM
alarm (0); /* kill any pending ALRM interrupts */
oldalrm = signal (SIGALRM, scm_alrm_signal);
#endif
#ifdef SIGPIPE
oldpipe = signal (SIGPIPE, SIG_IGN);
#endif
#ifdef ultrix
siginterrupt (SIGINT, 1);
siginterrupt (SIGALRM, 1);
siginterrupt (SIGHUP, 1);
siginterrupt (SIGPIPE, 1);
#endif /* ultrix */
}
/* This is used in preparation for a possible fork(). Ignore all
signals before the fork so that child will catch only if it
establishes a handler */
void
scm_ignore_signals ()
{
#ifdef ultrix
siginterrupt (SIGINT, 0);
siginterrupt (SIGALRM, 0);
siginterrupt (SIGHUP, 0);
siginterrupt (SIGPIPE, 0);
#endif /* ultrix */
signal (SIGINT, SIG_IGN);
#ifdef SIGHUP
signal (SIGHUP, SIG_DFL);
#endif
#ifdef SCM_FLOATS
signal (SIGFPE, SIG_DFL);
#endif
#ifdef SIGBUS
signal (SIGBUS, SIG_DFL);
#endif
#ifdef SIGSEGV /* AMIGA lacks! */
signal (SIGSEGV, SIG_DFL);
#endif
/* Some documentation claims that ALRMs are cleared accross forks.
If this is not always true then the value returned by alarm(0)
will have to be saved and scm_unignore_signals() will have to
reinstate it. */
/* This code should be neccessary only if the forked process calls
alarm() without establishing a handler:
#ifdef SIGALRM
oldalrm = signal(SIGALRM, SIG_DFL);
#endif */
/* These flushes are per warning in man page on fork(). */
fflush (stdout);
fflush (stderr);
}
void
scm_unignore_signals ()
{
signal (SIGINT, scm_int_signal);
#ifdef SIGHUP
signal (SIGHUP, scm_hup_signal);
#endif
#ifdef SCM_FLOATS
signal (SIGFPE, scm_fpe_signal);
#endif
#ifdef SIGBUS
signal (SIGBUS, scm_bus_signal);
#endif
#ifdef SIGSEGV /* AMIGA lacks! */
signal (SIGSEGV, scm_segv_signal);
#endif
#ifdef SIGALRM
signal (SIGALRM, scm_alrm_signal);
#endif
#ifdef ultrix
siginterrupt (SIGINT, 1);
siginterrupt (SIGALRM, 1);
siginterrupt (SIGHUP, 1);
siginterrupt (SIGPIPE, 1);
#endif /* ultrix */
}
SCM_PROC (s_restore_signals, "restore-signals", 0, 0, 0, scm_restore_signals);
SCM
scm_restore_signals ()
{
#ifdef ultrix
siginterrupt (SIGINT, 0);
siginterrupt (SIGALRM, 0);
siginterrupt (SIGHUP, 0);
siginterrupt (SIGPIPE, 0);
#endif /* ultrix */
signal (SIGINT, oldint);
#ifdef SIGHUP
signal (SIGHUP, oldhup);
#endif
#ifdef SCM_FLOATS
signal (SIGFPE, oldfpe);
#endif
#ifdef SIGBUS
signal (SIGBUS, oldbus);
#endif
#ifdef SIGSEGV /* AMIGA lacks! */
signal (SIGSEGV, oldsegv);
#endif
#ifdef SIGPIPE
signal (SIGPIPE, oldpipe);
#endif
#ifdef SIGALRM
alarm (0); /* kill any pending ALRM interrupts */
signal (SIGALRM, oldalrm);
#endif
return SCM_UNSPECIFIED; return SCM_UNSPECIFIED;
} }
void void
scm_init_scmsigs () scm_init_scmsigs ()
{ {
SCM thunk;
int i;
signal_handlers =
SCM_CDRLOC (scm_sysintern ("signal-handlers",
scm_make_vector (SCM_MAKINUM (NSIG),
SCM_BOOL_F,
SCM_BOOL_F)));
thunk = scm_make_gsubr ("%deliver-signals", 0, 0, 0,
sys_deliver_signals);
signal_async = scm_system_async (thunk);
for (i = 0; i < NSIG; i++)
{
got_signal[i] = 0;
#ifdef HAVE_SIGACTION
orig_handlers[i].sa_handler = SIG_ERR;
#else
orig_handlers[i] = SIG_ERR;
#endif
}
scm_sysintern ("NSIG", scm_long2num (NSIG));
scm_sysintern ("SIG_IGN", scm_long2num ((long) SIG_IGN));
scm_sysintern ("SIG_DFL", scm_long2num ((long) SIG_DFL));
#ifdef SA_NOCLDSTOP
scm_sysintern ("SA_NOCLDSTOP", scm_long2num (SA_NOCLDSTOP));
#endif
#ifdef SA_RESTART
scm_sysintern ("SA_RESTART", scm_long2num (SA_RESTART));
#endif
#include "scmsigs.x" #include "scmsigs.x"
} }

8
libguile/scmsigs.h
View file

@ -2,7 +2,7 @@
#ifndef SCMSIGSH #ifndef SCMSIGSH
#define SCMSIGSH #define SCMSIGSH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc. /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -47,14 +47,12 @@
extern SCM scm_sigaction (SCM signum, SCM handler, SCM flags);
extern SCM scm_restore_signals SCM_P ((void));
extern SCM scm_alarm SCM_P ((SCM i)); extern SCM scm_alarm SCM_P ((SCM i));
extern SCM scm_pause SCM_P ((void)); extern SCM scm_pause SCM_P ((void));
extern SCM scm_sleep SCM_P ((SCM i)); extern SCM scm_sleep SCM_P ((SCM i));
extern SCM scm_raise SCM_P ((SCM sig)); extern SCM scm_raise SCM_P ((SCM sig));
extern void scm_init_signals SCM_P ((void));
extern void scm_ignore_signals SCM_P ((void));
extern void scm_unignore_signals SCM_P ((void));
extern SCM scm_restore_signals SCM_P ((void));
extern void scm_init_scmsigs SCM_P ((void)); extern void scm_init_scmsigs SCM_P ((void));
#endif /* SCMSIGSH */ #endif /* SCMSIGSH */

2
libguile/script.c
View file

@ -614,6 +614,8 @@ scm_compile_shell_switches (int argc, char **argv)
quit. */ quit. */
tail = scm_cons (scm_cons (sym_quit, SCM_EOL), tail = scm_cons (scm_cons (sym_quit, SCM_EOL),
tail); tail);
/* Allow asyncs (signal handlers etc.) to be run. */
scm_mask_ints = 0;
} }
{ {
/* We want a path only containing directories from SCHEME_LOAD_PATH, /* We want a path only containing directories from SCHEME_LOAD_PATH,

2
libguile/simpos.c
View file

@ -67,13 +67,11 @@ scm_system(cmd)
SCM_ASSERT(SCM_NIMP(cmd) && SCM_ROSTRINGP(cmd), cmd, SCM_ARG1, s_system); SCM_ASSERT(SCM_NIMP(cmd) && SCM_ROSTRINGP(cmd), cmd, SCM_ARG1, s_system);
if (SCM_ROSTRINGP (cmd)) if (SCM_ROSTRINGP (cmd))
cmd = scm_makfromstr (SCM_ROCHARS (cmd), SCM_ROLENGTH (cmd), 0); cmd = scm_makfromstr (SCM_ROCHARS (cmd), SCM_ROLENGTH (cmd), 0);
scm_ignore_signals();
# ifdef AZTEC_C # ifdef AZTEC_C
cmd = SCM_MAKINUM(Execute(SCM_ROCHARS(cmd), 0, 0)); cmd = SCM_MAKINUM(Execute(SCM_ROCHARS(cmd), 0, 0));
# else # else
cmd = SCM_MAKINUM(0L+system(SCM_ROCHARS(cmd))); cmd = SCM_MAKINUM(0L+system(SCM_ROCHARS(cmd)));
# endif # endif
scm_unignore_signals();
return cmd; return cmd;
} }
#endif #endif