96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/* Native debugging support for GNU/Linux (LWP layer).
|
|
|
|
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006
|
|
Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
#include "target.h"
|
|
|
|
/* Structure describing an LWP. */
|
|
|
|
struct lwp_info
|
|
{
|
|
/* The process id of the LWP. This is a combination of the LWP id
|
|
and overall process id. */
|
|
ptid_t ptid;
|
|
|
|
/* Non-zero if this LWP is cloned. In this context "cloned" means
|
|
that the LWP is reporting to its parent using a signal other than
|
|
SIGCHLD. */
|
|
int cloned;
|
|
|
|
/* Non-zero if we sent this LWP a SIGSTOP (but the LWP didn't report
|
|
it back yet). */
|
|
int signalled;
|
|
|
|
/* Non-zero if this LWP is stopped. */
|
|
int stopped;
|
|
|
|
/* Non-zero if this LWP will be/has been resumed. Note that an LWP
|
|
can be marked both as stopped and resumed at the same time. This
|
|
happens if we try to resume an LWP that has a wait status
|
|
pending. We shouldn't let the LWP run until that wait status has
|
|
been processed, but we should not report that wait status if GDB
|
|
didn't try to let the LWP run. */
|
|
int resumed;
|
|
|
|
/* If non-zero, a pending wait status. */
|
|
int status;
|
|
|
|
/* Non-zero if we were stepping this LWP. */
|
|
int step;
|
|
|
|
/* If WAITSTATUS->KIND != TARGET_WAITKIND_SPURIOUS, the waitstatus
|
|
for this LWP's last event. This may correspond to STATUS above,
|
|
or to a local variable in lin_lwp_wait. */
|
|
struct target_waitstatus waitstatus;
|
|
|
|
/* Next LWP in list. */
|
|
struct lwp_info *next;
|
|
};
|
|
|
|
/* Attempt to initialize libthread_db. */
|
|
void check_for_thread_db (void);
|
|
|
|
/* Find process PID's pending signal set from /proc/pid/status. */
|
|
void linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigset_t *ignored);
|
|
|
|
/* linux-nat functions for handling fork events. */
|
|
extern void linux_record_stopped_pid (int pid);
|
|
extern void linux_enable_event_reporting (ptid_t ptid);
|
|
extern ptid_t linux_handle_extended_wait (int pid, int status,
|
|
struct target_waitstatus *ourstatus);
|
|
|
|
/* Iterator function for lin-lwp's lwp list. */
|
|
struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *,
|
|
void *),
|
|
void *data);
|
|
|
|
/* Create a prototype generic Linux target. The client can override
|
|
it with local methods. */
|
|
struct target_ops * linux_target (void);
|
|
|
|
/* Register the customized Linux target. This should be used
|
|
instead of calling add_target directly. */
|
|
void linux_nat_add_target (struct target_ops *);
|
|
|
|
/* Update linux-nat internal state when changing from one fork
|
|
to another. */
|
|
void linux_nat_switch_fork (ptid_t new_ptid);
|