31#ifdef HAVE_VALGRIND_MEMCHECK_H
32# include <valgrind/memcheck.h>
33# ifndef VALGRIND_MAKE_MEM_DEFINED
34# define VALGRIND_MAKE_MEM_DEFINED(p, n) VALGRIND_MAKE_READABLE((p), (n))
36# ifndef VALGRIND_MAKE_MEM_UNDEFINED
37# define VALGRIND_MAKE_MEM_UNDEFINED(p, n) VALGRIND_MAKE_WRITABLE((p), (n))
40# define VALGRIND_MAKE_MEM_DEFINED(p, n) 0
41# define VALGRIND_MAKE_MEM_UNDEFINED(p, n) 0
44#ifdef NEED_RUBY_ATOMIC_OPS
65#define FOREACH_SIGNAL(sig, offset) \
66 for (sig = siglist + (offset); sig < siglist + numberof(siglist); ++sig)
68static const struct signals {
178 {
"DANGER", SIGDANGER},
181 {
"MIGRATE", SIGMIGRATE},
190 {
"RETRACT", SIGRETRACT},
200static const char signame_prefix[] =
"SIG";
201static const int signame_prefix_len = 3;
204signm2signo(
VALUE *sig_ptr,
int negative,
int exit,
int *prefix_ptr)
206 const struct signals *sigs;
207 VALUE vsig = *sig_ptr;
221 *sig_ptr = vsig =
str;
230 if (
len > 0 && nm[0] ==
'-') {
238 if (
len >= prefix + signame_prefix_len) {
239 if (
memcmp(nm + prefix, signame_prefix, signame_prefix_len) == 0)
240 prefix += signame_prefix_len;
242 if (
len <= (
long)prefix) {
244 if (prefix == signame_prefix_len) {
247 else if (prefix > signame_prefix_len) {
248 prefix -= signame_prefix_len;
256 prefix = signame_prefix_len;
259 prefix, signame_prefix, vsig);
262 if (prefix_ptr) *prefix_ptr = prefix;
263 nmlen =
len - prefix;
267 if (
memcmp(sigs->signm, nm, nmlen) == 0 &&
268 sigs->signm[nmlen] ==
'\0') {
269 return negative ? -sigs->signo : sigs->signo;
278 const struct signals *sigs;
281 if (sigs->signo == no)
304 const char *signame = signo2signm(
NUM2INT(signo));
305 if (!signame)
return Qnil;
312 return signo2signm(no);
316rb_signo2signm(
int signo)
318 const char *
const signm = signo2signm(signo);
351 if (signo < 0 || signo >
NSIG) {
358 sig = rb_signo2signm(signo);
364 if (prefix != signame_prefix_len) {
382esignal_signo(
VALUE self)
414static int signal_ignored(
int sig);
415static void signal_enque(
int sig);
421#define killpg(pg, sig) kill(-(pg), (sig))
453 if ((
sig != 0) && (
self != -1) && (pid ==
self)) {
479 t = signal_ignored(
sig);
510#define sighandler_t ruby_sighandler_t
512#ifdef USE_SIGALTSTACK
514#define SIGINFO_ARG , siginfo_t *info, void *ctx
515#define SIGINFO_CTX ctx
522#ifdef USE_SIGALTSTACK
524rb_sigaltstack_size(
void)
532 if (
size < minsigstksz)
536#if defined(HAVE_SYSCONF) && defined(_SC_PAGE_SIZE)
554 newSS.
ss_size = rb_sigaltstack_size();
571 rb_trap_accept_nativethreads[signum] = 0;
575#ifdef USE_SIGALTSTACK
577 sigact.sa_handler = handler;
585 sigact.sa_handler = handler;
594# ifdef USE_SIGALTSTACK
599 sigact.sa_handler = sighandler;
602 sigact.sa_handler = handler;
611#if defined(SA_ONSTACK) && defined(USE_SIGALTSTACK)
627 handler =
old.sa_handler;
646 return signal(signum, handler);
650#define ruby_signal(sig,handler) ( signal((sig),(handler)))
653ruby_nativethread_signal(
int signum,
sighandler_t handler)
658 rb_trap_accept_nativethreads[signum] = 1;
665signal_ignored(
int sig)
672 func =
old.sa_handler;
679 return func == sighandler ? 0 : -1;
692# define GET_SIGCHLD_HIT() ATOMIC_EXCHANGE(sigchld_hit, 0)
694# define GET_SIGCHLD_HIT() 0
700 int old_errnum =
errno;
718#if !defined(BSD_SIGNAL) && !defined(POSIX_SIGNAL)
728 return signal_buff.size;
736rb_disable_interrupt(
void)
738#ifdef HAVE_PTHREAD_SIGMASK
746rb_enable_interrupt(
void)
748#ifdef HAVE_PTHREAD_SIGMASK
760 if (signal_buff.size != 0) {
762 if (signal_buff.cnt[
i] > 0) {
773#if defined SIGSEGV || defined SIGBUS || defined SIGILL || defined SIGFPE
774static const char *received_signal;
775# define clear_received_signal() (void)(ruby_disable_gc = 0, received_signal = 0)
777# define clear_received_signal() ((void)0)
780#if defined(USE_SIGALTSTACK) || defined(_WIN32)
782# if defined __HAIKU__
783# define USE_UCONTEXT_REG 1
784# elif !(defined(HAVE_UCONTEXT_H) && (defined __i386__ || defined __x86_64__ || defined __amd64__))
785# elif defined __linux__
786# define USE_UCONTEXT_REG 1
787# elif defined __APPLE__
788# define USE_UCONTEXT_REG 1
789# elif defined __FreeBSD__
790# define USE_UCONTEXT_REG 1
792#if defined(HAVE_PTHREAD_SIGMASK)
793# define ruby_sigunmask pthread_sigmask
794#elif defined(HAVE_SIGPROCMASK)
795# define ruby_sigunmask sigprocmask
798reset_sigmask(
int sig)
800#if defined(ruby_sigunmask)
804#if defined(ruby_sigunmask)
813# ifdef USE_UCONTEXT_REG
818# if defined __linux__
820 const greg_t sp = mctx->gregs[REG_RSP];
821 const greg_t
bp = mctx->gregs[REG_RBP];
823 const greg_t sp = mctx->gregs[REG_ESP];
824 const greg_t
bp = mctx->gregs[REG_EBP];
826# elif defined __APPLE__
828# define MCTX_SS_REG(reg) __ss.__##reg
830# define MCTX_SS_REG(reg) ss.reg
832# if defined(__LP64__)
833 const uintptr_t sp = mctx->MCTX_SS_REG(rsp);
836 const uintptr_t sp = mctx->MCTX_SS_REG(esp);
839# elif defined __FreeBSD__
840# if defined(__amd64__)
841 const __register_t sp = mctx->mc_rsp;
842 const __register_t
bp = mctx->mc_rbp;
844 const __register_t sp = mctx->mc_esp;
845 const __register_t
bp = mctx->mc_ebp;
847# elif defined __HAIKU__
848# if defined(__amd64__)
849 const unsigned long sp = mctx->rsp;
850 const unsigned long bp = mctx->rbp;
852 const unsigned long sp = mctx->esp;
853 const unsigned long bp = mctx->ebp;
856 enum {pagesize = 4096};
859 const uintptr_t fault_page = addr / pagesize;
863 if (sp_page == fault_page || sp_page == fault_page + 1 ||
864 (sp_page <= fault_page && fault_page <= bp_page)) {
880check_stack_overflow(
int sig,
const void *addr)
882 int ruby_stack_overflowed_p(
const rb_thread_t *,
const void *);
884 if (ruby_stack_overflowed_p(th, addr)) {
891# define CHECK_STACK_OVERFLOW() check_stack_overflow(sig, 0)
893# define FAULT_ADDRESS info->si_addr
894# ifdef USE_UCONTEXT_REG
895# define CHECK_STACK_OVERFLOW() check_stack_overflow(sig, (uintptr_t)FAULT_ADDRESS, ctx)
897# define CHECK_STACK_OVERFLOW() check_stack_overflow(sig, FAULT_ADDRESS)
899# define MESSAGE_FAULT_ADDRESS " at %p", FAULT_ADDRESS
902# define CHECK_STACK_OVERFLOW() (void)0
904#ifndef MESSAGE_FAULT_ADDRESS
905# define MESSAGE_FAULT_ADDRESS
908#if defined SIGSEGV || defined SIGBUS || defined SIGILL || defined SIGFPE
909NOINLINE(
static void check_reserved_signal_(
const char *
name,
size_t name_len));
912#define check_reserved_signal(name) check_reserved_signal_(name, sizeof(name)-1)
922 check_reserved_signal(
"BUS");
929#if defined __APPLE__ || defined __linux__
944 check_reserved_signal(
"SEGV");
958 check_reserved_signal(
"ILL");
967NORETURN(
static void ruby_abort(
void));
984check_reserved_signal_(
const char *
name,
size_t name_len)
990#define NOZ(name, str) name[sizeof(str)-1] = str
991 static const char NOZ(msg1,
" received in ");
992 static const char NOZ(msg2,
" handler\n");
998 iov[0].iov_len = name_len;
999 iov[1].iov_base = (
void *)msg1;
1000 iov[1].iov_len =
sizeof(msg1);
1001 iov[2].iov_base = (
void *)prev;
1002 iov[2].iov_len =
strlen(prev);
1003 iov[3].iov_base = (
void *)msg2;
1004 iov[3].iov_len =
sizeof(msg2);
1005 err = writev(2, iov, 4);
1008 err =
write(2, msg1,
sizeof(msg1));
1010 err =
write(2, msg2,
sizeof(msg2));
1019#if defined SIGPIPE || defined SIGSYS
1021sig_do_nothing(
int sig)
1066 signal_exec(trap_exit, 0);
1114 else if (cmd ==
Qundef) {
1118 return signal_exec(cmd,
sig);
1124default_handler(
int sig)
1164 func = sig_do_nothing;
1169 func = sig_do_nothing;
1195 if (!
NIL_P(command)) {
1206 if (
memcmp(cptr,
"SYSTEM_DEFAULT", 14) == 0) {
1215 if (
memcmp(cptr,
"SIG_IGN", 7) == 0) {
1220 else if (
memcmp(cptr,
"SIG_DFL", 7) == 0) {
1222 func = default_handler(
sig);
1225 else if (
memcmp(cptr,
"DEFAULT", 7) == 0) {
1230 if (
memcmp(cptr,
"IGNORE", 6) == 0) {
1235 if (
memcmp(cptr,
"EXIT", 4) == 0) {
1252trap_signm(
VALUE vsig)
1258 if (sig < 0 || sig >=
NSIG) {
1293 else if (oldfunc == sighandler) oldcmd =
rb_str_new2(
"DEFAULT");
1309reserved_signal_p(
int signo)
1379 if (reserved_signal_p(
sig)) {
1380 const char *
name = signo2signm(
sig);
1393 func = trap_handler(&cmd,
sig);
1396 return trap(
sig, func, cmd);
1412 const struct signals *sigs;
1420#define INSTALL_SIGHANDLER(cond, signame, signum) do { \
1421 static const char failed[] = "failed to install "signame" handler"; \
1422 if (!(cond)) break; \
1423 if (reserved_signal_p(signum)) rb_bug(failed); \
1445# define install_sighandler(signum, handler) \
1446 INSTALL_SIGHANDLER(install_sighandler_core(signum, handler, NULL), #signum, signum)
1447# define force_install_sighandler(signum, handler, old_handler) \
1448 INSTALL_SIGHANDLER(install_sighandler_core(signum, handler, old_handler), #signum, signum)
1452init_sigchld(
int sig)
1458 if (oldfunc ==
SIG_ERR)
return -1;
1465# define init_sigchld(signum) \
1466 INSTALL_SIGHANDLER(init_sigchld(signum), #signum, signum)
1475 if (oldfunc == sighandler) {
1536 rb_disable_interrupt();
1581 rb_enable_interrupt();
1584#if defined(HAVE_GRANTPT)
1588fake_grantfd(
int masterfd)
1593#define grantpt(fd) fake_grantfd(fd)
1618 if (ret < 0) e =
errno;
1622 if (ret < 0)
errno = e;
char str[HTML_ESCAPE_MAX_LEN+1]
VALUE rb_define_module(const char *)
void ruby_sig_finalize(void)
void rb_raise(VALUE exc, const char *fmt,...)
void rb_interrupt(void)
Raises an Interrupt exception.
void rb_sys_fail_str(VALUE mesg)
void rb_bug_errno(const char *mesg, int errno_arg)
void rb_bug_for_fatal_signal(ruby_sighandler_t default_sighandler, int sig, const void *ctx, const char *fmt,...)
void rb_sys_fail(const char *mesg)
VALUE rb_check_to_integer(VALUE, const char *)
Tries to convert val into Integer.
#define ruby_signal(sig, handler)
#define VALGRIND_MAKE_MEM_DEFINED(p, n)
#define CHECK_STACK_OVERFLOW()
#define GET_SIGCHLD_HIT()
void ruby_default_signal(int sig)
void ruby_sigchld_handler(rb_vm_t *vm)
const char * ruby_signal_name(int no)
RETSIGTYPE ruby_sigaction_t(int)
#define force_install_sighandler(signum, handler, old_handler)
rb_atomic_t cnt[RUBY_NSIG]
rb_atomic_t ruby_atomic_compare_and_swap(rb_atomic_t *ptr, rb_atomic_t cmp, rb_atomic_t newval)
#define FOREACH_SIGNAL(sig, offset)
int rb_signal_exec(rb_thread_t *th, int sig)
int rb_grantpt(int masterfd)
int rb_get_next_signal(void)
rb_atomic_t ruby_atomic_exchange(rb_atomic_t *ptr, rb_atomic_t val)
#define MESSAGE_FAULT_ADDRESS
void rb_malloc_info_show_results(void)
VALUE rb_f_kill(int argc, const VALUE *argv)
void rb_vm_trap_exit(rb_vm_t *vm)
int rb_signal_buff_size(void)
void ruby_waitpid_all(rb_vm_t *)
#define install_sighandler(signum, handler)
#define clear_received_signal()
rb_atomic_t interrupt_mask
rb_execution_context_t * ec
rb_nativethread_lock_t waitpid_lock
struct rb_vm_struct::@51 trap_list
MJIT_STATIC void rb_ec_stack_overflow(rb_execution_context_t *ec, int crit)