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* gdbthread.h (struct thread_info): New `pending_follow' field.
	* thread.c (new_thread): New function.
	(add_thread_silent): Use it.
	* breakpoint.c (internal_breakpoint_number): New global, moved
	from inside...
	(create_internal_breakpoint): ... this.
	(clone_momentary_breakpoint): New.
	* breakpoint.h (clone_momentary_breakpoint): Declare.
	* infrun.c (nullify_last_target_wait_ptid): Move declaration
	higher.
	(pending_follow): Delete.
	(follow_fork): Handle pending follow fork event here.  Moved the
	preserving of thread stepping state here.
	(resume): Don't handle pending follow fork events here.  Only
	install the inferior's terminal modes if we're about to resume it.
	(proceed): Handle possible pending follow fork events here.
	(init_wait_for_inferior): No need to clear pending_follow anymore,
	it's gone.
	(handle_inferior_event): Adjust to per-thread `pending_follow'.
	Call `follow_fork' to handle following the fork.  If the
	follow-fork is cancelled, stop stepping.
	* linux-nat.c (linux_child_follow_fork): Adjust to per-thread
	`pending_follow' events.  Remove code that handled preserving the
	thread stepping state.
	* inf-ptrace.c (inf_ptrace_follow_fork): Ditto.
	* inf-ttrace.c (inf_ttrace_follow_fork): Ditto.

gdb/testsuite/
	* gdb.threads/fork-thread-pending.c: New.
	* gdb.threads/fork-thread-pending.exp: New.
This commit is contained in:
Pedro Alves 2009-05-24 18:00:08 +00:00
parent e27d73f6b0
commit e58b0e63bb
12 changed files with 540 additions and 169 deletions
Download patch file Download diff file Expand all files Collapse all files

37
gdb/thread.c
View file

@ -141,6 +141,28 @@ init_thread_list (void)
thread_list = NULL;
}
/* Allocate a new thread with target id PTID and add it to the thread
list. */
static struct thread_info *
new_thread (ptid_t ptid)
{
struct thread_info *tp;
tp = xcalloc (1, sizeof (*tp));
tp->ptid = ptid;
tp->num = ++highest_thread_num;
tp->next = thread_list;
thread_list = tp;
/* Nothing to follow yet. */
tp->pending_follow.kind = TARGET_WAITKIND_SPURIOUS;
tp->state_ = THREAD_STOPPED;
return tp;
}
struct thread_info *
add_thread_silent (ptid_t ptid)
{
@ -162,12 +184,7 @@ add_thread_silent (ptid_t ptid)
if (ptid_equal (inferior_ptid, ptid))
{
tp = xmalloc (sizeof (*tp));
memset (tp, 0, sizeof (*tp));
tp->ptid = minus_one_ptid;
tp->num = ++highest_thread_num;
tp->next = thread_list;
thread_list = tp;
tp = new_thread (ptid);
/* Make switch_to_thread not read from the thread. */
tp->state_ = THREAD_EXITED;
@ -191,13 +208,7 @@ add_thread_silent (ptid_t ptid)
delete_thread (ptid);
}
tp = (struct thread_info *) xmalloc (sizeof (*tp));
memset (tp, 0, sizeof (*tp));
tp->ptid = ptid;
tp->num = ++highest_thread_num;
tp->next = thread_list;
thread_list = tp;
tp = new_thread (ptid);
observer_notify_new_thread (tp);
return tp;