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2011-05-27 Pedro Alves <pedro@codesourcery.com>

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gdb/
	* continuations.c (make_continuation): Make it return void.
	(do_my_continuations): Rename to ...
	(do_my_continuations_1): ... this.  Remove old_chain parameter and
	adjust.
	(do_my_continuations): New.
	(discard_my_continuations): Rename to ...
	(discard_my_continuations_1): ... this.  Remove old_chain
	parameter and adjust.
	(discard_my_continuations): New.
	(add_inferior_continuation): Simplify.
	(do_all_inferior_continuations): Reimplement on top
	do_my_continuations.
	(discard_all_inferior_continuations): Simplify.
	(add_continuation): Simplify.
	(do_all_continuations_ptid): Simplify.
	(discard_all_continuations_thread_callback): Simplify.
	(add_intermediate_continuation): Simplify.
	(discard_all_intermediate_continuations_thread_callback):
	Simplify.
This commit is contained in:
Pedro Alves 2011-05-27 14:32:08 +00:00
parent 6caf069d24
commit af1e9a32aa
2 changed files with 76 additions and 84 deletions
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22
gdb/ChangeLog
View File

@ -1,3 +1,25 @@
2011-05-27 Pedro Alves <pedro@codesourcery.com>
* continuations.c (make_continuation): Make it return void.
(do_my_continuations): Rename to ...
(do_my_continuations_1): ... this. Remove old_chain parameter and
adjust.
(do_my_continuations): New.
(discard_my_continuations): Rename to ...
(discard_my_continuations_1): ... this. Remove old_chain
parameter and adjust.
(discard_my_continuations): New.
(add_inferior_continuation): Simplify.
(do_all_inferior_continuations): Reimplement on top
do_my_continuations.
(discard_all_inferior_continuations): Simplify.
(add_continuation): Simplify.
(do_all_continuations_ptid): Simplify.
(discard_all_continuations_thread_callback): Simplify.
(add_intermediate_continuation): Simplify.
(discard_all_intermediate_continuations_thread_callback):
Simplify.
2011-05-27 Pedro Alves <pedro@codesourcery.com>
* utils.c (struct continuation, add_continuation)

138
gdb/continuations.c
View File

@ -33,35 +33,30 @@ struct continuation
typedef void (make_continuation_ftype) (void *);
/* Add a new continuation to the continuation chain, and return the
previous chain pointer to be passed later to do_continuations or
discard_continuations. Args are FUNCTION to run the continuation
up with, and ARG to pass to it. */
/* Add a new continuation to the continuation chain. Args are
FUNCTION to run the continuation up with, and ARG to pass to
it. */
static struct continuation *
static void
make_continuation (struct continuation **pmy_chain,
make_continuation_ftype *function,
void *arg, void (*free_arg) (void *))
{
struct continuation *new = XNEW (struct continuation);
struct continuation *old_chain = *pmy_chain;
new->next = *pmy_chain;
new->function = function;
new->free_arg = free_arg;
new->arg = arg;
*pmy_chain = new;
return old_chain;
}
static void
do_my_continuations (struct continuation **pmy_chain,
struct continuation *old_chain)
do_my_continuations_1 (struct continuation **pmy_chain)
{
struct continuation *ptr;
while ((ptr = *pmy_chain) != old_chain)
while ((ptr = *pmy_chain) != NULL)
{
*pmy_chain = ptr->next; /* Do this first in case of recursion. */
(*ptr->function) (ptr->arg);
@ -71,13 +66,32 @@ do_my_continuations (struct continuation **pmy_chain,
}
}
void
discard_my_continuations (struct continuation **pmy_chain,
struct continuation *old_chain)
static void
do_my_continuations (struct continuation **list)
{
struct continuation *continuations;
if (*list == NULL)
return;
/* Copy the list header into another pointer, and set the global
list header to null, so that the global list can change as a side
effect of invoking the continuations and the processing of the
preexisting continuations will not be affected. */
continuations = *list;
*list = NULL;
/* Work now on the list we have set aside. */
do_my_continuations_1 (&continuations);
}
static void
discard_my_continuations_1 (struct continuation **pmy_chain)
{
struct continuation *ptr;
while ((ptr = *pmy_chain) != old_chain)
while ((ptr = *pmy_chain) != NULL)
{
*pmy_chain = ptr->next;
if (ptr->free_arg)
@ -86,23 +100,13 @@ discard_my_continuations (struct continuation **pmy_chain,
}
}
/* Add a continuation to the continuation list of THREAD. The new
continuation will be added at the front. */
void
add_continuation (struct thread_info *thread,
void (*continuation_hook) (void *), void *args,
void (*continuation_free_args) (void *))
static void
discard_my_continuations (struct continuation **list)
{
struct continuation *continuations = thread->continuations;
make_cleanup_ftype *continuation_hook_fn = continuation_hook;
struct continuation *continuation_ptr = *list;
make_continuation (&continuations,
continuation_hook_fn,
args,
continuation_free_args);
thread->continuations = continuations;
discard_my_continuations_1 (list);
*list = NULL;
}
/* Add a continuation to the continuation list of INFERIOR. The new
@ -113,15 +117,9 @@ add_inferior_continuation (void (*continuation_hook) (void *), void *args,
void (*continuation_free_args) (void *))
{
struct inferior *inf = current_inferior ();
struct continuation *continuations = inf->continuations;
make_cleanup_ftype *continuation_hook_fn = continuation_hook;
make_continuation (&continuations,
continuation_hook_fn,
args,
continuation_free_args);
inf->continuations = continuations;
make_continuation (&inf->continuations, continuation_hook,
args, continuation_free_args);
}
/* Do all continuations of the current inferior. */
@ -129,22 +127,8 @@ add_inferior_continuation (void (*continuation_hook) (void *), void *args,
void
do_all_inferior_continuations (void)
{
struct continuation *continuations;
struct inferior *inf = current_inferior ();
if (inf->continuations == NULL)
return;
/* Copy the list header into another pointer, and set the global
list header to null, so that the global list can change as a side
effect of invoking the continuations and the processing of the
preexisting continuations will not be affected. */
continuations = inf->continuations;
inf->continuations = NULL;
/* Work now on the list we have set aside. */
do_my_continuations (&continuations, NULL);
do_my_continuations (&inf->continuations);
}
/* Get rid of all the inferior-wide continuations of INF. */
@ -152,10 +136,19 @@ do_all_inferior_continuations (void)
void
discard_all_inferior_continuations (struct inferior *inf)
{
struct continuation *continuation_ptr = inf->continuations;
discard_my_continuations (&inf->continuations);
}
discard_my_continuations (&continuation_ptr, NULL);
inf->continuations = NULL;
/* Add a continuation to the continuation list of THREAD. The new
continuation will be added at the front. */
void
add_continuation (struct thread_info *thread,
void (*continuation_hook) (void *), void *args,
void (*continuation_free_args) (void *))
{
make_continuation (&thread->continuations, continuation_hook,
args, continuation_free_args);
}
static void
@ -180,7 +173,6 @@ do_all_continuations_ptid (ptid_t ptid,
struct continuation **continuations_p)
{
struct cleanup *old_chain;
struct continuation *continuations;
ptid_t current_thread;
if (*continuations_p == NULL)
@ -202,16 +194,7 @@ do_all_continuations_ptid (ptid_t ptid,
/* Let the continuation see this thread as selected. */
switch_to_thread (ptid);
/* Copy the list header into another pointer, and set the global
list header to null, so that the global list can change as a side
effect of invoking the continuations and the processing of the
preexisting continuations will not be affected. */
continuations = *continuations_p;
*continuations_p = NULL;
/* Work now on the list we have set aside. */
do_my_continuations (&continuations, NULL);
do_my_continuations (continuations_p);
do_cleanups (old_chain);
}
@ -247,10 +230,7 @@ static int
discard_all_continuations_thread_callback (struct thread_info *thread,
void *data)
{
struct continuation *continuation_ptr = thread->continuations;
discard_my_continuations (&continuation_ptr, NULL);
thread->continuations = NULL;
discard_my_continuations (&thread->continuations);
return 0;
}
@ -280,15 +260,8 @@ add_intermediate_continuation (struct thread_info *thread,
(void *), void *args,
void (*continuation_free_args) (void *))
{
struct continuation *continuations = thread->intermediate_continuations;
make_cleanup_ftype *continuation_hook_fn = continuation_hook;
make_continuation (&continuations,
continuation_hook_fn,
args,
continuation_free_args);
thread->intermediate_continuations = continuations;
make_continuation (&thread->intermediate_continuations, continuation_hook,
args, continuation_free_args);
}
/* Walk down the cmd_continuation list, and execute all the
@ -332,10 +305,7 @@ static int
discard_all_intermediate_continuations_thread_callback (struct thread_info *thread,
void *data)
{
struct continuation *continuation_ptr = thread->intermediate_continuations;
discard_my_continuations (&continuation_ptr, NULL);
thread->intermediate_continuations = NULL;
discard_my_continuations (&thread->intermediate_continuations);
return 0;
}