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comparison src/sighandlers.cc @ 2016:6f3428b0d2c7

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[project @ 1996-03-22 09:48:38 by jwe]
author jwe
date Fri, 22 Mar 1996 09:49:03 +0000
parents 003570e69c7b
children 60f5e1c20815
comparison
equal deleted inserted replaced
2015:9e4e71b27b3a 2016:6f3428b0d2c7
45 // SIGPIPES. We assume that the writer will eventually give up. 45 // SIGPIPES. We assume that the writer will eventually give up.
46 int pipe_handler_error_count = 0; 46 int pipe_handler_error_count = 0;
47 47
48 // Nonzero means we can be interrupted. 48 // Nonzero means we can be interrupted.
49 int can_interrupt = 0; 49 int can_interrupt = 0;
50
51 // Allow us to save the signal mask and then restore it to the most
52 // recently saved value. This is necessary when using the POSIX
53 // signal handling interface on some systems calling longjmp out of
54 // the signal handler to get to the top level on an interrupt doesn't
55 // restore the original signal mask. Alternatively, we could use
56 // sigsetjmp/siglongjmp, but saving and restoring the signal mask
57 // ourselves works ok and seems simpler just now.
58
59 #if defined (HAVE_POSIX_SIGNALS)
60 static sigset_t octave_signal_mask;
61 #endif
62
63 void
64 octave_save_signal_mask (void)
65 {
66 #if defined (HAVE_POSIX_SIGNALS)
67 sigprocmask (0, 0, &octave_signal_mask);
68 #endif
69 }
70
71 void
72 octave_restore_signal_mask (void)
73 {
74 #if defined (HAVE_POSIX_SIGNALS)
75 sigprocmask (SIG_SETMASK, &octave_signal_mask, 0);
76 #endif
77 }
50 78
51 static void 79 static void
52 my_friendly_exit (const char *sig_name, int sig_number) 80 my_friendly_exit (const char *sig_name, int sig_number)
53 { 81 {
54 error ("%s -- stopping myself...", sig_name); 82 error ("%s -- stopping myself...", sig_name);