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comparison src/event-stream.c @ 535:c69610198c35

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[xemacs-hg @ 2001-05-14 04:52:02 by martinb] Eliminate the need to define HAVE_PTYS in s&m files.
author martinb
date Mon, 14 May 2001 04:52:49 +0000
parents 8a4db099aa97
children 183866b06e0b
comparison
equal deleted inserted replaced
534:a0266879cecf 535:c69610198c35
2975 to have tt_message_receive() called exactly once 2975 to have tt_message_receive() called exactly once
2976 every time the file descriptor becomes active, so 2976 every time the file descriptor becomes active, so
2977 the filter function forces this by returning 0. 2977 the filter function forces this by returning 0.
2978 Emacs must not interpret this as a closed pipe. */ 2978 Emacs must not interpret this as a closed pipe. */
2979 connected_via_filedesc_p (XPROCESS (p)))) 2979 connected_via_filedesc_p (XPROCESS (p))))
2980 #ifdef HAVE_PTYS 2980
2981 /* On some OSs with ptys, when the process on one end of 2981 /* On some OSs with ptys, when the process on one end of
2982 a pty exits, the other end gets an error reading with 2982 a pty exits, the other end gets an error reading with
2983 errno = EIO instead of getting an EOF (0 bytes read). 2983 errno = EIO instead of getting an EOF (0 bytes read).
2984 Therefore, if we get an error reading and errno = 2984 Therefore, if we get an error reading and errno =
2985 EIO, just continue, because the child process has 2985 EIO, just continue, because the child process has
2986 exited and should clean itself up soon (e.g. when we 2986 exited and should clean itself up soon (e.g. when we
2987 get a SIGCHLD). */ 2987 get a SIGCHLD). */
2988 #ifdef EIO
2988 || (readstatus == -1 && errno == EIO) 2989 || (readstatus == -1 && errno == EIO)
2989 #endif 2990 #endif
2991
2990 ) 2992 )
2991 { 2993 {
2992 /* Currently, we rely on SIGCHLD to indicate that the 2994 /* Currently, we rely on SIGCHLD to indicate that the
2993 process has terminated. Unfortunately, on some systems 2995 process has terminated. Unfortunately, on some systems
2994 the SIGCHLD gets missed some of the time. So we put an 2996 the SIGCHLD gets missed some of the time. So we put an