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Let ui::input_fd be -1

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This changes gdb so that, if ui::input_fd is set to -1, then it will
not be registered with the event loop.  This is useful for the DAP
support code I wrote, but as it turns out to also be useful to
Insight, it seems best to check it in separately.
This commit is contained in:
Tom Tromey 2022-08-30 11:30:13 -06:00
parent 4749b84b51
commit 51cacdb50f
2 changed files with 7 additions and 4 deletions
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8
gdb/event-top.c
View File

@ -533,8 +533,9 @@ stdin_event_handler (int error, gdb_client_data client_data)
void
ui::register_file_handler ()
{
add_file_handler (input_fd, stdin_event_handler, this,
string_printf ("ui-%d", num), true);
if (input_fd != -1)
add_file_handler (input_fd, stdin_event_handler, this,
string_printf ("ui-%d", num), true);
}
/* See top.h. */
@ -542,7 +543,8 @@ ui::register_file_handler ()
void
ui::unregister_file_handler ()
{
delete_file_handler (input_fd);
if (input_fd != -1)
delete_file_handler (input_fd);
}
/* Re-enable stdin after the end of an execution command in

3
gdb/top.h
View File

@ -118,7 +118,8 @@ struct ui
FILE *errstream;
/* The file descriptor for the input stream, so that we can register
it with the event loop. */
it with the event loop. This can be set to -1 to prevent this
registration. */
int input_fd;
/* Whether ISATTY returns true on input_fd. Cached here because