* thread-db.c (verbose_dlsym): New function.
(thread_db_load): Use verbose_dlsym
(thread_db_new_objfile): Print that libthread_db was loaded, and
that thread debugging was enabled.
* thread-db.c (check_event): For create/death event breakpoints,
loop through all messages to ensure that we read the message
corresponding to the breakpoint we are at.
(struct private_thread_info): Remove lwpid. Add thread handle (th),
thread information (ti), and valid flags (th_valid, ti_valid).
(attach_thread): Move target_pid_to_str call to after the thread
is added to GDB's list. Initialize the cache.
(thread_get_info_callback, thread_db_map_id2thr)
(thread_db_get_info): New functions.
(thread_from_lwp, lwp_from_thread, thread_db_fetch_registers)
(thread_db_store_registers, thread_db_thread_alive)
(thread_db_get_thread_local_address): Use them.
(thread_db_pid_to_str): Likewise. Return "Missing" instead
of calling error() for threads in unknown state.
(clear_lwpid_callback): New function.
(thread_db_resume): Use it to clear the cache.
* thread-db.c (attach_thread): Check for TD_THR_ZOMBIE in addition
to TD_THR_UNKNOWN when looking for defunct zombie threads.
(thread_db_thread_alive): Ditto.
(find_new_threads_callback): Ditto.
* thread-db.c: Allow for defunct zombie threads.
(attach_thread): Do not attempt to attach zombie thread.
(thread_db_thread_alive): Return false for defunct zombie thread.
(find_new_threads_callback): Don't add defunct zombie thread to list.
* thread-db.c (keep_thread_db): Adjust comment.
(deactivate_target): Removed.
(thread_db_new_objfile): Don't call deactivate_target. Implement
guts of deactivate_target inline instead.
(attach_thread): Call ATTACH_LWP unconditionally if defined.
(thread_db_attach): New function.
(thread_db_detach): Don't call deactivate_target. Do necessary
cleanup inline instead. Set inferior_ptid to LWP corresponding to
the current user-level thread.
(thread_db_kill): Set inferior_ptid to LWP corresponding to the
current user-level thread.
(thread_db_create_inferior): Deactivate target vector if
KEEP_THREAD_DB is zero.
(thread_db_mourn_inferior): Don't call deactivate_target. Do
necessary cleanup inline instead.
(init_thread_db_ops): Initialize to_attach field to
thread_db_attach.
* lin-lwp.c (lin_lwp_mourn_inferior): Remove prototype.
(stop_wait_callback): Add prototype.
(init_lwp_list): Add comment about when to re-initialize the LWP
list.
(lin_lwp_attach_lwp): Only call ptrace for cloned processes.
Avoid adding publicates to the LWP list. Only mark an LWP as
signalled if it doesn't correspond to a cloned process.
(lin_lwp_attach): Add initial process to the LWP list. Make sure
it's stopped and fake a SIGSTOP.
(detach_callback): New function.
(lin_lwp_detach): Implement.
(lin_lwp_create_inferior): Don't re-initialize LWP list here.
Call child_ops.to_create_inferior directly instead of via
target_beneath local.
(lin_lwp_mourn_inferior): Call child_ops.to_mourn_inferior
directly instead of via target_beneath local.
* thread-db.c (_initialize_thread_db): Add set/show command
"debug-linux-threads" for debugging output.
* lin-lwp.c (various): Use global "debug_linux_threads to
turn on extra debugging output.
a thread creation event for a thread that's already in the thread
list, since that may legitemately happen. Instead only call
attach_thread if it's not already in the thread list.
* thread-db.c: Various comment fixes and additions.
Include "bfd.h", "symfile.h" and "objfiles.h".
(keep_thread_db): New variable.
(find_new_threads_callback): Remove prototype.
(thread_db_find_new_threads): New prototype.
(thread_db_push_target, thread_db_unpush_target): Remove
functions.
(deactivate_target): New function.
(thread_db_new_objfile): If OBJFILE == NULL, force deactivation of
target vector. Activate target vector directly instead of calling
thread_db_push_target. Set keep_thread_db if thread library is
detected in the main symbol file. Only enable thread event
reporting if there actually is a child process. Likewise for
detecting new threads, done by calling thread_db_find_new_threads
instead of iterating over the threads ourselves.
(thread_db_detach): Call deactivate_target instead of
thread_db_unpush_target.
(thread_db_wait): Bail out early if we're not debugging the
multi-threaded child process yet.
(thread_db_post_startup_inferior): New function.
(thread_db_mourn_inferior): Call deactivate_target instead of
thread_db_unpush_target.
(init_thread_db_ops): Add thread_db_post_startup_inferior to
thread_db_ops.
GET_THREAD_SIGNALS): New defines.
* config/i386/linux.mh (NATDEPFILES): Remove lin-thread.o and
linux-threads.o. Add proc-service.o, thread-db.o and lin-lwp.o.
* proc-service.c: New file.
* thread-db.c: New file.
* lin-lwp.c: New file.
Daniel Jacobowitz
Roland McGrath
Andrew Cagney
Jeff Johnston
Michael Snyder
Elena Zannoni
Mark Kettenis
Kevin Buettner
J.T. Conklin