| /* Native debugging support for GNU/Linux (LWP layer). |
| Copyright 2000, 2001, 2002, 2003, 2004 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, 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; |
| }; |
| |
| /* Read/write to target memory via the Linux kernel's "proc file |
| system". */ |
| struct mem_attrib; |
| struct target_ops; |
| |
| extern int linux_proc_xfer_memory (CORE_ADDR addr, char *myaddr, int len, |
| int write, struct mem_attrib *attrib, |
| struct target_ops *target); |
| |
| /* 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); |
| extern void linux_child_post_startup_inferior (ptid_t ptid); |
| |
| /* Iterator function for lin-lwp's lwp list. */ |
| struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *, |
| void *), |
| void *data); |