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author | Erlang/OTP <[email protected]> | 2017-02-01 18:32:25 +0100 |
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committer | Erlang/OTP <[email protected]> | 2017-02-01 18:32:25 +0100 |
commit | f74baa361cf8b3af437f75aa1ec5a1886005261c (patch) | |
tree | 980dc39ff175b15ff4b2812af658da4e90de9154 /erts/emulator/sys/unix/sys.c | |
parent | 8816cb5bc1befbe41f4cef5441d0ac39e49c19fd (diff) | |
parent | c46ba734b6787e254b45b35ea135fc2da23190bb (diff) | |
download | otp-f74baa361cf8b3af437f75aa1ec5a1886005261c.tar.gz otp-f74baa361cf8b3af437f75aa1ec5a1886005261c.tar.bz2 otp-f74baa361cf8b3af437f75aa1ec5a1886005261c.zip |
Merge branch 'egil/erts/fix_scheduler_suspend/ERL-94/PR-978/OTP-13425' into maint-18
* egil/erts/fix_scheduler_suspend/ERL-94/PR-978/OTP-13425:
erts: Fix install of suspend handler
Diffstat (limited to 'erts/emulator/sys/unix/sys.c')
-rw-r--r-- | erts/emulator/sys/unix/sys.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index d94b37430e..cbd47db37f 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -226,8 +226,10 @@ static erts_smp_atomic_t sys_misc_mem_sz; static void smp_sig_notify(char c); static int sig_notify_fds[2] = {-1, -1}; +#if !defined(ETHR_UNUSABLE_SIGUSRX) && defined(ERTS_THR_HAVE_SIG_FUNCS) static int sig_suspend_fds[2] = {-1, -1}; #define ERTS_SYS_SUSPEND_SIGNAL SIGUSR2 +#endif #endif @@ -872,7 +874,7 @@ sigusr1_exit(void) #else -#ifdef ERTS_SMP +#ifdef ERTS_SYS_SUSPEND_SIGNAL void sys_thr_suspend(erts_tid_t tid) { erts_thr_kill(tid, ERTS_SYS_SUSPEND_SIGNAL); @@ -900,7 +902,7 @@ static RETSIGTYPE user_signal1(int signum) #endif } -#ifdef ERTS_SMP +#ifdef ERTS_SYS_SUSPEND_SIGNAL #if (defined(SIG_SIGSET) || defined(SIG_SIGNAL)) static RETSIGTYPE suspend_signal(void) #else @@ -913,7 +915,7 @@ static RETSIGTYPE suspend_signal(int signum) res = read(sig_suspend_fds[0], buf, sizeof(int)); } while (res < 0 && errno == EINTR); } -#endif /* #ifdef ERTS_SMP */ +#endif /* #ifdef ERTS_SYS_SUSPEND_SIGNAL */ #endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */ @@ -966,13 +968,17 @@ void init_break_handler(void) sys_signal(SIGINT, request_break); #ifndef ETHR_UNUSABLE_SIGUSRX sys_signal(SIGUSR1, user_signal1); -#ifdef ERTS_SMP - sys_signal(ERTS_SYS_SUSPEND_SIGNAL, suspend_signal); -#endif /* #ifdef ERTS_SMP */ #endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */ sys_signal(SIGQUIT, do_quit); } +void sys_init_suspend_handler(void) +{ +#ifdef ERTS_SYS_SUSPEND_SIGNAL + sys_signal(ERTS_SYS_SUSPEND_SIGNAL, suspend_signal); +#endif +} + int sys_max_files(void) { return(max_files); @@ -990,7 +996,7 @@ static void block_signals(void) #endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */ #endif /* #ifndef ERTS_SMP */ -#if defined(ERTS_SMP) && !defined(ETHR_UNUSABLE_SIGUSRX) +#ifdef ERTS_SYS_SUSPEND_SIGNAL sys_sigblock(ERTS_SYS_SUSPEND_SIGNAL); #endif @@ -1009,7 +1015,7 @@ static void unblock_signals(void) #endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */ #endif /* #ifndef ERTS_SMP */ -#if defined(ERTS_SMP) && !defined(ETHR_UNUSABLE_SIGUSRX) +#ifdef ERTS_SYS_SUSPEND_SIGNAL sys_sigrelease(ERTS_SYS_SUSPEND_SIGNAL); #endif @@ -3248,12 +3254,14 @@ init_smp_sig_notify(void) static void init_smp_sig_suspend(void) { +#ifdef ERTS_SYS_SUSPEND_SIGNAL if (pipe(sig_suspend_fds) < 0) { erts_exit(ERTS_ABORT_EXIT, "Failed to create sig_suspend pipe: %s (%d)\n", erl_errno_id(errno), errno); } +#endif } #ifdef __DARWIN__ |