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Move start_event_loop out of event-loop.c 

A subsequent patch is going to move event-loop.c to gdbsupport.  In a
review of an earlier version of this series, Pedro pointed out that
the resulting code would be cleaner if start_event_loop were not
shared -- because gdb and gdbserver have some different needs here --
and so this moves start_event_loop to main.c.  Because the only caller
is there, it is also now static.

gdb/ChangeLog
2020-04-13  Tom Tromey  <tom@tromey.com>

	* event-loop.h (start_event_loop): Don't declare.
	* event-loop.c (start_event_loop): Move...
	* main.c (start_event_loop): ...here.  Now static.
This commit is contained in:
Tom Tromey 2020-04-13 12:42:59 -06:00 committed by Tom Tromey
parent b7f999aee3
commit 58cf28e860
4 changed files with 62 additions and 55 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2020-04-13 Tom Tromey <tom@tromey.com>
* event-loop.h (start_event_loop): Don't declare.
* event-loop.c (start_event_loop): Move...
* main.c (start_event_loop): ...here. Now static.
2020-04-13 Sergio Durigan Junior <sergiodj@sergiodj.net>
* MAINTAINERS: Update my email address.

54
gdb/event-loop.c
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@ -318,60 +318,6 @@ gdb_do_one_event (void)
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 will process one event
for each invocation. It blocks waiting for an event and then
processes it. */
while (1)
{
int result = 0;
try
{
result = gdb_do_one_event ();
}
catch (const gdb_exception &ex)
{
exception_print (gdb_stderr, ex);
/* If any exception escaped to here, we better enable
stdin. Otherwise, any command that calls async_disable_stdin,
and then throws, will leave stdin inoperable. */
SWITCH_THRU_ALL_UIS ()
{
async_enable_stdin ();
}
/* If we long-jumped out of do_one_event, we probably didn't
get around to resetting the prompt, which leaves readline
in a messed-up state. Reset it here. */
current_ui->prompt_state = PROMPT_NEEDED;
gdb::observers::command_error.notify ();
/* This call looks bizarre, but it is required. If the user
entered a command that caused an error,
after_char_processing_hook won't be called from
rl_callback_read_char_wrapper. Using a cleanup there
won't work, since we want this function to be called
after a new prompt is printed. */
if (after_char_processing_hook)
(*after_char_processing_hook) ();
/* Maybe better to set a flag to be checked somewhere as to
whether display the prompt or not. */
}
if (result < 0)
break;
}
/* We are done with the event loop. There are no more event sources
to listen to. So we exit GDB. */
return;
}
/* Wrapper function for create_file_handler, so that the caller

1
gdb/event-loop.h
View File

@ -80,7 +80,6 @@ typedef void (timer_handler_func) (gdb_client_data);
/* Exported functions from event-loop.c */
extern void start_event_loop (void);
extern int gdb_do_one_event (void);
extern void delete_file_handler (int fd);
extern void add_file_handler (int fd, handler_func *proc,

56
gdb/main.c
View File

@ -53,6 +53,7 @@
#include "gdbtk/generic/gdbtk.h"
#endif
#include "gdbsupport/alt-stack.h"
#include "observable.h"
/* The selected interpreter. This will be used as a set command
variable, so it should always be malloc'ed - since
@ -336,6 +337,61 @@ get_init_files (std::vector<std::string> *system_gdbinit,
*local_gdbinit = localinit;
}
/* Start up the event loop. This is the entry point to the event loop
from the command loop. */
static void
start_event_loop ()
{
/* Loop until there is nothing to do. This is the entry point to
the event loop engine. gdb_do_one_event will process one event
for each invocation. It blocks waiting for an event and then
processes it. */
while (1)
{
int result = 0;
try
{
result = gdb_do_one_event ();
}
catch (const gdb_exception &ex)
{
exception_print (gdb_stderr, ex);
/* If any exception escaped to here, we better enable
stdin. Otherwise, any command that calls async_disable_stdin,
and then throws, will leave stdin inoperable. */
SWITCH_THRU_ALL_UIS ()
{
async_enable_stdin ();
}
/* If we long-jumped out of do_one_event, we probably didn't
get around to resetting the prompt, which leaves readline
in a messed-up state. Reset it here. */
current_ui->prompt_state = PROMPT_NEEDED;
gdb::observers::command_error.notify ();
/* This call looks bizarre, but it is required. If the user
entered a command that caused an error,
after_char_processing_hook won't be called from
rl_callback_read_char_wrapper. Using a cleanup there
won't work, since we want this function to be called
after a new prompt is printed. */
if (after_char_processing_hook)
(*after_char_processing_hook) ();
/* Maybe better to set a flag to be checked somewhere as to
whether display the prompt or not. */
}
if (result < 0)
break;
}
/* We are done with the event loop. There are no more event sources
to listen to. So we exit GDB. */
return;
}
/* Call command_loop. */
/* Prevent inlining this function for the benefit of GDB's selftests