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import gdb-1999-11-08 snapshot

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This commit is contained in:
Jason Molenda
1999-11-09 01:23:30 +00:00
parent 98007ce7b0
commit 11cf874164
57 changed files with 1736 additions and 543 deletions
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112
gdb/event-loop.c
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@ -256,7 +256,7 @@ static void create_file_handler (int fd, int mask, handler_func * proc, gdb_clie
static void invoke_async_signal_handler (void);
static void handle_file_event (int event_file_desc);
static int gdb_wait_for_event (void);
static int gdb_do_one_event (void);
static int gdb_do_one_event (void *data);
static int check_async_ready (void);
static void async_queue_event (gdb_event * event_ptr, queue_position position);
static gdb_event *create_file_event (int fd);
@ -388,52 +388,61 @@ process_event (void)
/* Process one high level event. If nothing is ready at this time,
wait for something to happen (via gdb_wait_for_event), then process
it. Returns 1 if something was done otherwise returns 0 (this can
happen if there are no event sources to wait for). */
static int
gdb_do_one_event (void)
{
int result = 0;
it. Returns >0 if something was done otherwise returns <0 (this
can happen if there are no event sources to wait for). If an error
occures catch_errors() which calls this function returns zero. */
static int
gdb_do_one_event (void *data)
{
/* Any events already waiting in the queue? */
if (process_event ())
{
return 1;
}
/* Are any timers that are ready? If so, put an event on the queue. */
poll_timers ();
/* Wait for a new event. If gdb_wait_for_event returns -1,
we should get out because this means that there are no
event sources left. This will make the event loop stop,
and the application exit. */
if (gdb_wait_for_event () < 0)
{
return -1;
}
/* Handle any new events occurred while waiting. */
if (process_event ())
{
return 1;
}
/* If gdb_wait_for_event has returned 1, it means that one
event has been handled. We break out of the loop. */
return 1;
}
/* Start up the event loop. This is the entry point to the event loop
from the command loop. */
void
start_event_loop (void)
{
/* Loop until there is nothing to do. This is the entry point to the
event loop engine. gdb_do_one_event, called via catch_errors()
will process one event for each invocation. It blocks waits for
an event and then processes it. >0 when an event is processed, 0
when catch_errors() caught an error and <0 when there are no
longer any event sources registered. */
while (1)
{
if (!SET_TOP_LEVEL ())
{
/* Any events already waiting in the queue? */
if (process_event ())
{
result = 1;
break;
}
/* Are any timers that are ready? If so, put an event on the queue. */
poll_timers ();
/* Wait for a new event. If gdb_wait_for_event returns -1,
we should get out because this means that there are no
event sources left. This will make the event loop stop,
and the application exit. */
result = gdb_wait_for_event ();
if (result < 0)
{
result = 0;
break;
}
/* Handle any new events occurred while waiting. */
if (process_event ())
{
result = 1;
break;
}
/* If gdb_wait_for_event has returned 1, it means that one
event has been handled. We break out of the loop. */
if (result)
break;
} /* end of if !set_top_level */
else
int result = catch_errors (gdb_do_one_event, 0, "", RETURN_MASK_ALL);
if (result < 0)
break;
if (result == 0)
{
/* FIXME: this should really be a call to a hook that is
interface specific, because interfaces can display the
@ -443,21 +452,6 @@ gdb_do_one_event (void)
whether display the prompt or not. */
}
}
return result;
}
/* Start up the event loop. This is the entry point to the event loop
from the command loop. */
void
start_event_loop (void)
{
/* Loop until there is something to do. This is the entry point to
the event loop engine. gdb_do_one_event will process one event
for each invocation. It always returns 1, unless there are no
more event sources registered. In this case it returns 0. */
while (gdb_do_one_event () != 0)
;
/* We are done with the event loop. There are no more event sources
to listen to. So we exit GDB. */