diff options
Diffstat (limited to 'erts/emulator/sys/unix/sys.c')
| -rw-r--r-- | erts/emulator/sys/unix/sys.c | 46 |
1 files changed, 38 insertions, 8 deletions
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index 6459fa064b..7f738751ff 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -148,11 +148,18 @@ volatile int erts_break_requested = 0; #define ERTS_SET_BREAK_REQUESTED (erts_break_requested = 1) #define ERTS_UNSET_BREAK_REQUESTED (erts_break_requested = 0) #endif + +#ifndef ERTS_SMP +volatile Uint erts_signal_sigterm = 0; +#define ERTS_SET_SIGNAL_SIGTERM (erts_signal_sigterm = 1) +#define ERTS_CLEAR_SIGNAL_SIGTERM (erts_signal_sigterm = 0) +#endif + /* set early so the break handler has access to initial mode */ static struct termios initial_tty_mode; static int replace_intr = 0; /* assume yes initially, ttsl_init will clear it */ -int using_oldshell = 1; +int using_oldshell = 1; #ifdef ERTS_ENABLE_KERNEL_POLL @@ -684,11 +691,11 @@ static RETSIGTYPE request_stop(int signum) #ifdef ERTS_SMP smp_sig_notify('S'); #else - stop_requested(); + ERTS_SET_SIGNAL_SIGTERM; + ERTS_CHK_IO_AS_INTR(); #endif } - static ERTS_INLINE void sigusr1_exit(void) { @@ -784,10 +791,14 @@ static RETSIGTYPE do_quit(int signum) /* Disable break */ void erts_set_ignore_break(void) { - sys_signal(SIGINT, SIG_IGN); - sys_signal(SIGTERM, SIG_IGN); - sys_signal(SIGQUIT, SIG_IGN); - sys_signal(SIGTSTP, SIG_IGN); + /* + * Ignore signals that can be sent to the VM by + * typing certain key combinations at the + * controlling terminal... + */ + sys_signal(SIGINT, SIG_IGN); /* Ctrl-C */ + sys_signal(SIGQUIT, SIG_IGN); /* Ctrl-\ */ + sys_signal(SIGTSTP, SIG_IGN); /* Ctrl-Z */ } /* Don't use ctrl-c for break handler but let it be @@ -811,7 +822,6 @@ void erts_replace_intr(void) { void init_break_handler(void) { sys_signal(SIGINT, request_break); - sys_signal(SIGTERM, request_stop); #ifndef ETHR_UNUSABLE_SIGUSRX sys_signal(SIGUSR1, user_signal1); #endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */ @@ -825,6 +835,19 @@ void sys_init_suspend_handler(void) #endif } +void +erts_sys_unix_later_init(void) +{ + char env[5]; + size_t envsz = sizeof(env); + + if (erts_sys_getenv_raw("ERL_ZZ_SIGTERM_KILL", env, &envsz) == 0) + if (envsz == 4 && sys_strncmp("true", env, 4) == 0) + return; + + sys_signal(SIGTERM, request_stop); +} + int sys_max_files(void) { return(max_files); @@ -958,6 +981,13 @@ void erts_do_break_handling(void) erts_smp_thr_progress_unblock(); } +#ifdef ERTS_SIGNAL_SIGTERM +void erts_handle_signal_sigterm(void) { + ERTS_CLEAR_SIGNAL_SIGTERM; + stop_requested(); +} +#endif + /* Fills in the systems representation of the jam/beam process identifier. ** The Pid is put in STRING representation in the supplied buffer, ** no interpretatione of this should be done by the rest of the |