diff options
Diffstat (limited to 'src/sysdep.c')
| -rw-r--r-- | src/sysdep.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/src/sysdep.c b/src/sysdep.c index 9065b38d6f..dbfd9efc7d 100644 --- a/src/sysdep.c +++ b/src/sysdep.c @@ -1447,27 +1447,21 @@ emacs_sigaction_init (struct sigaction *action, signal_handler_t handler) action->sa_handler = handler; action->sa_flags = 0; #if defined (SA_RESTART) - /* Emacs mostly works better with restartable system services. If this - flag exists, we probably want to turn it on here. - However, on some systems (only hpux11 at present) this resets the - timeout of `select' which means that `select' never finishes if - it keeps getting signals. - We define BROKEN_SA_RESTART on those systems. */ - /* It's not clear why the comment above says "mostly works better". --Stef - When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll + /* SA_RESTART causes interruptible functions with timeouts (e.g., + 'select') to reset their timeout on some platforms (e.g., + HP-UX 11), which is not what we want. Also, when Emacs is + interactive, we don't want SA_RESTART because we need to poll for pending input so we need long-running syscalls to be interrupted after a signal that sets the interrupt_input_pending flag. */ /* Non-interactive keyboard input goes through stdio, where we always want restartable system calls. */ -# if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT) if (noninteractive) -# endif action->sa_flags = SA_RESTART; #endif } #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD -pthread_t main_thread; +static pthread_t main_thread; #endif /* If we are on the main thread, handle the signal SIG with HANDLER. @@ -1914,11 +1908,9 @@ emacs_write (int fildes, const char *buf, ptrdiff_t nbyte) { if (errno == EINTR) { -#ifdef SYNC_INPUT /* I originally used `QUIT' but that might causes files to be truncated if you hit C-g in the middle of it. --Stef */ process_pending_signals (); -#endif continue; } else |