Differences From Artifact [0d20ecce41]:

• File unix/pty.c — part of check-in [e1fb5ab154] at 2002-11-02 08:35:57 on branch trunk — RJK's general signal-handling robustness patch. Should fix the weird spin behaviour occasionally seen after pterm's child process dies. (user: simon size: 15018)

To Artifact [7fa93fca98]:

• File unix/pty.c — part of check-in [66d4a347b6] at 2002-11-02 10:05:26 on branch trunk — Another signal-handling refinement from RJK: the SIGCHLD handler should be prepared to reap more than one child per invocation if necessary, since we do after all have two. (user: simon size: 15048)

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static void sigchld_handler(int signum)
{
    int save_errno = errno;
    pid_t pid;
    int status;


    pid = waitpid(-1, &status, WNOHANG);
    if (pid == pty_child_pid && (WIFEXITED(status) || WIFSIGNALED(status))) {
	pty_exit_code = status;
	pty_child_dead = TRUE;
    }

    errno = save_errno;
}

static void fatal_sig_handler(int signum)
{
    putty_signal(signum, SIG_DFL);
    cleanup_utmp();

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static void sigchld_handler(int signum)
{
    int save_errno = errno;
    pid_t pid;
    int status;

    do {
	pid = waitpid(-1, &status, WNOHANG);
	if (pid == pty_child_pid && (WIFEXITED(status) || WIFSIGNALED(status))) {
	    pty_exit_code = status;
	    pty_child_dead = TRUE;
	}
    } while(pid > 0);
    errno = save_errno;
}

static void fatal_sig_handler(int signum)
{
    putty_signal(signum, SIG_DFL);
    cleanup_utmp();