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* fhandler_termios.cc (fhandler_termios::line_edit): Return line_edit_error and 

remove last char from readahead buffer if accept_input() fails.
* fhandler_tty.cc (fhandler_pty_master::accept_input): Return 0 and restore
readahead buffer when tty slave pipe is full.
This commit is contained in:
Christopher Faylor 2002-12-17 03:49:34 +00:00
parent 1a7ce58505
commit b2be3149b4
3 changed files with 42 additions and 31 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2002-12-16 Steve Osborn <bub@io.com>
Christopher Faylor <cgf@redhat.com>
* fhandler_termios.cc (fhandler_termios::line_edit): Return
line_edit_error and remove last char from readahead buffer if
accept_input() fails.
* fhandler_tty.cc (fhandler_pty_master::accept_input): Return 0 and
restore readahead buffer when tty slave pipe is full.
2002-12-16 Christopher Faylor <cgf@redhat.com>
* pinfo.cc (_pinfo::cmdline): Allocate sufficient space for myself

7
winsup/cygwin/fhandler_termios.cc
View File

@ -326,7 +326,12 @@ fhandler_termios::line_edit (const char *rptr, int nread, int always_accept)
put_readahead (c);
if (!iscanon || always_accept || input_done)
{
(void) accept_input();
if (!accept_input ())
{
ret = line_edit_error;
eat_readahead (1);
break;
}
ret = line_edit_input_done;
input_done = 0;
}

57
winsup/cygwin/fhandler_tty.cc
View File

@ -145,51 +145,48 @@ fhandler_pty_master::doecho (const void *str, DWORD len)
int
fhandler_pty_master::accept_input ()
{
DWORD bytes_left, written;
DWORD n;
DWORD rc;
char* p;
DWORD bytes_left;
int ret = 1;
rc = WaitForSingleObject (input_mutex, INFINITE);
(void) WaitForSingleObject (input_mutex, INFINITE);
bytes_left = n = eat_readahead (-1);
p = rabuf;
bytes_left = eat_readahead (-1);
if (n != 0)
if (!bytes_left)
{
while (bytes_left > 0)
{
termios_printf ("about to write %d chars to slave", bytes_left);
rc = WriteFile (get_output_handle (), p, bytes_left, &written, NULL);
if (!rc)
{
debug_printf ("error writing to pipe %E");
get_ttyp ()->read_retval = -1;
break;
}
else
get_ttyp ()->read_retval = 1;
termios_printf ("sending EOF to slave");
get_ttyp ()->read_retval = 0;
}
else
{
char *p = rabuf;
DWORD rc;
DWORD written = 0;
termios_printf ("about to write %d chars to slave", bytes_left);
rc = WriteFile (get_output_handle (), p, bytes_left, &written, NULL);
if (!rc)
{
debug_printf ("error writing to pipe %E");
get_ttyp ()->read_retval = -1;
}
else
{
get_ttyp ()->read_retval = 1;
p += written;
bytes_left -= written;
if (bytes_left > 0)
{
debug_printf ("to_slave pipe is full");
SetEvent (input_available_event);
ReleaseMutex (input_mutex);
Sleep (10);
rc = WaitForSingleObject (input_mutex, INFINITE);
puts_readahead (p, bytes_left);
ret = 0;
}
}
}
else
{
termios_printf ("sending EOF to slave");
get_ttyp ()->read_retval = 0;
}
SetEvent (input_available_event);
ReleaseMutex (input_mutex);
return 1;
return ret;
}
static DWORD WINAPI