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viewer: Ticket: Viewer(F3) hangups at '.patch' viewing

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As stderr closes before process shutdown we get hangup trying to
read last data from stderr. Try to read at least something before closing
stderr.

Signed-off-by: Sergei Trofimovich <slyfox@inbox.ru>
This commit is contained in:
Sergei Trofimovich 2009-06-26 13:24:10 +03:00
parent b72e83193a
commit e65b0f1986
1 changed files with 21 additions and 0 deletions
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21
src/utilunix.c
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@ -355,6 +355,27 @@ void open_error_pipe (void)
close (error_pipe[0]);
error_pipe[0] = -1;
}
else
{
/*
* Settng stderr in nonblocking mode as we close it earlier, than
* program stops. We try to read some error at program startup,
* but we should not block on it.
*
* TODO: make piped stdin/stderr poll()/select()able to get rid
* of following hack.
*/
int fd_flags;
fd_flags = fcntl (error_pipe[0], F_GETFL, NULL);
if (fd_flags != -1)
{
fd_flags |= O_NONBLOCK;
if (fcntl(error_pipe[0], F_SETFL, fd_flags) == -1)
{
/* TODO: handle it somehow */
}
}
}
/* we never write there */
close (error_pipe[1]);
error_pipe[1] = -1;