#include <sys/param.h>
#include <sys/stat.h>
#include <signal.h>
-#ifdef LISP_FEATURE_SB_THREAD
-#include <sys/ptrace.h>
-#endif
#include <sched.h>
#include <errno.h>
#include <string.h>
#include "interr.h"
#endif
+
+#ifndef SBCL_HOME
+#define SBCL_HOME "/usr/local/lib/sbcl/"
+#endif
+
\f
/* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
static void
printf(
"This is SBCL %s, an implementation of ANSI Common Lisp.\n\
\n\
-SBCL is derived from the CMU CL system created at Carnegie Mellon University.\n\
-Besides software and documentation originally created at Carnegie Mellon\n\
-University, SBCL contains some software originally from the Massachusetts\n\
-Institute of Technology, Symbolics Incorporated, and Xerox Corporation, and\n\
-material contributed by volunteers since the release of CMU CL into the\n\
-public domain. See the CREDITS file in the distribution for more information.\n\
-\n\
-SBCL is a free software system, provided as is, with absolutely no warranty.\n\
-It is mostly in the public domain, but also includes some software copyrighted\n\
- Massachusetts Institute of Technology, 1986;\n\
- Symbolics, Inc., 1989, 1990, 1991, 1992; and\n\
- Xerox Corporation, 1985, 1986, 1987, 1988, 1989, 1990\n\
-used under BSD-style licenses allowing copying only under certain conditions.\n\
-See the COPYING file in the distribution for more information.\n\
+More information about SBCL is available at <http://www.sbcl.org/>.\
\n\
-More information about SBCL is available at <http://sbcl.sourceforge.net/>.\n\
+SBCL is free software, provided as is, with absolutely no warranty.\n\
+It is mostly in the public domain; some portions are provided under\n\
+BSD-style licenses. See the CREDITS and COPYING files in the\n\
+distribution for more information.\n\
", SBCL_VERSION_STRING);
}
\f
-int gc_thread_pid;
FILE *stdlog;
\f
/* If no core file was specified, look for one. */
if (!core) {
char *sbcl_home = getenv("SBCL_HOME");
- if (sbcl_home) {
- char *lookhere;
- char *stem = "/sbcl.core";
- lookhere = (char *) calloc(strlen(sbcl_home) +
- strlen(stem) +
- 1,
- sizeof(char));
- sprintf(lookhere, "%s%s", sbcl_home, stem);
- core = copied_existing_filename_or_null(lookhere);
- free(lookhere);
- } else {
- putenv("SBCL_HOME=/usr/local/lib/sbcl/");
- core = copied_existing_filename_or_null("/usr/local/lib/sbcl/sbcl.core");
- if (!core) {
- putenv("SBCL_HOME=/usr/lib/sbcl/");
- core =
- copied_existing_filename_or_null("/usr/lib/sbcl/sbcl.core");
- }
- }
+ char *lookhere;
+ char *stem = "/sbcl.core";
+ if(!sbcl_home) sbcl_home = SBCL_HOME;
+ lookhere = (char *) calloc(strlen(sbcl_home) +
+ strlen(stem) +
+ 1,
+ sizeof(char));
+ sprintf(lookhere, "%s%s", sbcl_home, stem);
+ core = copied_existing_filename_or_null(lookhere);
+ free(lookhere);
if (!core) {
lose("can't find core file");
}
- } else {
- /* If a core was specified and SBCL_HOME is unset, set it */
- char *sbcl_home = getenv("SBCL_HOME");
- if (!sbcl_home) {
- char *envstring, *copied_core, *dir;
- char *stem = "SBCL_HOME=";
- copied_core = copied_string(core);
- dir = dirname(copied_core);
- envstring = (char *) calloc(strlen(stem) +
- strlen(dir) +
- 1,
- sizeof(char));
- sprintf(envstring, "%s%s", stem, dir);
- putenv(envstring);
- free(copied_core);
- }
}
-
+ /* Make sure that SBCL_HOME is set, no matter where the core was
+ * found */
+ if (!getenv("SBCL_HOME")) {
+ char *envstring, *copied_core, *dir;
+ char *stem = "SBCL_HOME=";
+ copied_core = copied_string(core);
+ dir = dirname(copied_core);
+ envstring = (char *) calloc(strlen(stem) +
+ strlen(dir) +
+ 1,
+ sizeof(char));
+ sprintf(envstring, "%s%s", stem, dir);
+ putenv(envstring);
+ free(copied_core);
+ }
+
if (!noinform) {
print_banner();
fflush(stdout);
}
-#ifdef MACH
- mach_init();
-#endif
#if defined(SVR4) || defined(__linux__)
tzset();
#endif
create_thread(initial_function);
/* in a unithread build, create_thread never returns */
#ifdef LISP_FEATURE_SB_THREAD
- gc_thread_pid=getpid();
parent_loop();
#endif
}
-static void parent_sighandler(int signum,siginfo_t *info, void *void_context)
-{
-#if 0
- os_context_t *context = (os_context_t*)void_context;
- fprintf(stderr,
- "parent thread got signal %d from %d, maybe_gc_pending=%d\n",
- signum, info->si_pid,
- maybe_gc_pending);
-#endif
-}
-
#ifdef LISP_FEATURE_SB_THREAD
+/* this is being pared down as time goes on; eventually we want to get
+ * to the point that we have no parent loop at all and the parent
+ * thread runs Lisp just like any other */
+
static void /* noreturn */ parent_loop(void)
{
struct sigaction sa;
pid_t pid=0;
sigemptyset(&sigset);
-
- sigaddset(&sigset, SIGALRM);
- sigaddset(&sigset, SIGCHLD);
- sigprocmask(SIG_UNBLOCK,&sigset,0);
- sa.sa_handler=parent_sighandler;
- sa.sa_mask=sigset;
- sa.sa_flags=SA_SIGINFO;
- sigaction(SIGALRM, &sa, 0);
- sigaction(SIGCHLD, &sa, 0);
-
- sigemptyset(&sigset);
sa.sa_handler=SIG_IGN;
sa.sa_mask=sigset;
sa.sa_flags=0;
- sigaction(SIGINT, &sa, 0);
+ sigaction(SIGINT, &sa, 0); /* ^c should go to the lisp thread instead */
+ sigaction(SIG_THREAD_EXIT, &sa, 0);
+ sigaction(SIGCHLD, &sa, 0);
while(!all_threads) {
sched_yield();
}
- while(all_threads && (pid=waitpid(-1,&status,__WALL|WUNTRACED))) {
+ while(all_threads && (pid=waitpid(-1,&status,__WALL))) {
struct thread *th;
- int real_errno=errno;
if(pid==-1) {
- if(real_errno == EINTR) {
- continue;
- }
- if(real_errno == ECHILD) break;
- fprintf(stderr,"waitpid: %s\n",strerror(real_errno));
- continue;
+ if(errno == EINTR) continue;
+ fprintf(stderr,"waitpid: %s\n",strerror(errno));
}
- th=find_thread_by_pid(pid);
- if(!th) continue;
- if(WIFEXITED(status) || WIFSIGNALED(status)) {
- fprintf(stderr,"waitpid : child %d %x exited \n", pid,th);
+ else if(WIFEXITED(status) || WIFSIGNALED(status)) {
+ th=find_thread_by_pid(pid);
+ if(!th) continue;
destroy_thread(th);
if(!all_threads) break;
}
projects / sbcl.git / blobdiff