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e1a191a8ca
* _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.
136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
/* classes: h_files */
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#ifndef _SCMH
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#define _SCMH
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/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "__scm.h"
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/* This file is only visible to the libguile sources */
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/* Include headers for those files central to the implementation. The
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rest should be explicitly #included in the C files themselves. */
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#include "error.h" /* Everyone signals errors. */
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#include "print.h" /* Everyone needs to print. */
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#include "pairs.h" /* Everyone conses. */
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#include "list.h" /* Everyone makes lists. */
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#include "gc.h" /* Everyone allocates. */
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#include "gsubr.h" /* Everyone defines global functions. */
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#include "procs.h" /* Same. */
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#include "numbers.h" /* Everyone deals with fixnums. */
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#include "symbols.h" /* For length, chars, values, miscellany. */
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#include "boolean.h" /* Everyone wonders about the truth. */
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#include "strings.h" /* Everyone loves string. */
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#include "vectors.h" /* Vectors are used for structures a lot. */
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#include "root.h" /* Everyone uses these objects. */
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#include "ports.h" /* Everyone does I/O. */
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#include "async.h" /* Everyone allows/disallows ints. */
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#ifdef USE_THREADS
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#include "threads.h" /* The cooperative thread package does
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switching at async ticks. */
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#endif
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#include "snarf.h" /* Everyone snarfs. */
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/* On VMS, GNU C's errno.h contains a special hack to get link attributes
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* for errno correct for linking to the C RTL.
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*/
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#include <errno.h>
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/* SCM_SYSCALL retries system calls that have been interrupted (EINTR).
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However this can be avoided if the operating system can restart
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system calls automatically. We assume this is the case if
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sigaction is available and SA_RESTART is defined; they will be used
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when installing signal handlers.
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*/
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#ifdef HAVE_RESTARTS
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#define SCM_SYSCALL(line) line
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#endif
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#ifndef SCM_SYSCALL
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#ifdef vms
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# ifndef __GNUC__
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# include <ssdef.h>
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# define SCM_SYSCALL(line) do{errno = 0;line;} \
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while(EVMSERR==errno && (vaxc$errno>>3)==(SS$_CONTROLC>>3))
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# endif /* ndef __GNUC__ */
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#endif /* def vms */
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#endif /* ndef SCM_SYSCALL */
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#ifndef SCM_SYSCALL
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# ifdef EINTR
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# if (EINTR > 0)
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# define SCM_SYSCALL(line) do{errno = 0;line;}while(EINTR==errno)
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# endif /* (EINTR > 0) */
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# endif /* def EINTR */
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#endif /* ndef SCM_SYSCALL */
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#ifndef SCM_SYSCALL
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# define SCM_SYSCALL(line) line;
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#endif /* ndef SCM_SYSCALL */
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#ifndef MSDOS
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# ifdef ARM_ULIB
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extern volatile int errno;
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# else
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extern int errno;
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# endif /* def ARM_ULIB */
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#endif /* ndef MSDOS */
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#ifdef __TURBOC__
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# if (__TURBOC__==1)
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/* Needed for TURBOC V1.0 */
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extern int errno;
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# endif /* (__TURBOC__==1) */
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#endif /* def __TURBOC__ */
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#ifndef min
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#define min(A,B) ((A) <= (B) ? (A) : (B))
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#endif
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#ifndef max
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#define max(A,B) ((A) >= (B) ? (A) : (B))
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#endif
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#endif /* _SCMH */
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