| /* Multi-process/thread control defs for GDB, the GNU debugger. |
| Copyright (C) 1987-2017 Free Software Foundation, Inc. |
| Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA. |
| |
| |
| 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GDBTHREAD_H |
| #define GDBTHREAD_H |
| |
| struct symtab; |
| |
| #include "breakpoint.h" |
| #include "frame.h" |
| #include "ui-out.h" |
| #include "inferior.h" |
| #include "btrace.h" |
| #include "common/vec.h" |
| #include "target/waitstatus.h" |
| #include "cli/cli-utils.h" |
| |
| /* Frontend view of the thread state. Possible extensions: stepping, |
| finishing, until(ling),... */ |
| enum thread_state |
| { |
| THREAD_STOPPED, |
| THREAD_RUNNING, |
| THREAD_EXITED, |
| }; |
| |
| /* Inferior thread specific part of `struct infcall_control_state'. |
| |
| Inferior process counterpart is `struct inferior_control_state'. */ |
| |
| struct thread_control_state |
| { |
| /* User/external stepping state. */ |
| |
| /* Step-resume or longjmp-resume breakpoint. */ |
| struct breakpoint *step_resume_breakpoint; |
| |
| /* Exception-resume breakpoint. */ |
| struct breakpoint *exception_resume_breakpoint; |
| |
| /* Breakpoints used for software single stepping. Plural, because |
| it may have multiple locations. E.g., if stepping over a |
| conditional branch instruction we can't decode the condition for, |
| we'll need to put a breakpoint at the branch destination, and |
| another at the instruction after the branch. */ |
| struct breakpoint *single_step_breakpoints; |
| |
| /* Range to single step within. |
| |
| If this is nonzero, respond to a single-step signal by continuing |
| to step if the pc is in this range. |
| |
| If step_range_start and step_range_end are both 1, it means to |
| step for a single instruction (FIXME: it might clean up |
| wait_for_inferior in a minor way if this were changed to the |
| address of the instruction and that address plus one. But maybe |
| not). */ |
| CORE_ADDR step_range_start; /* Inclusive */ |
| CORE_ADDR step_range_end; /* Exclusive */ |
| |
| /* Function the thread was in as of last it started stepping. */ |
| struct symbol *step_start_function; |
| |
| /* If GDB issues a target step request, and this is nonzero, the |
| target should single-step this thread once, and then continue |
| single-stepping it without GDB core involvement as long as the |
| thread stops in the step range above. If this is zero, the |
| target should ignore the step range, and only issue one single |
| step. */ |
| int may_range_step; |
| |
| /* Stack frame address as of when stepping command was issued. |
| This is how we know when we step into a subroutine call, and how |
| to set the frame for the breakpoint used to step out. */ |
| struct frame_id step_frame_id; |
| |
| /* Similarly, the frame ID of the underlying stack frame (skipping |
| any inlined frames). */ |
| struct frame_id step_stack_frame_id; |
| |
| /* Nonzero if we are presently stepping over a breakpoint. |
| |
| If we hit a breakpoint or watchpoint, and then continue, we need |
| to single step the current thread with breakpoints disabled, to |
| avoid hitting the same breakpoint or watchpoint again. And we |
| should step just a single thread and keep other threads stopped, |
| so that other threads don't miss breakpoints while they are |
| removed. |
| |
| So, this variable simultaneously means that we need to single |
| step the current thread, keep other threads stopped, and that |
| breakpoints should be removed while we step. |
| |
| This variable is set either: |
| - in proceed, when we resume inferior on user's explicit request |
| - in keep_going, if handle_inferior_event decides we need to |
| step over breakpoint. |
| |
| The variable is cleared in normal_stop. The proceed calls |
| wait_for_inferior, which calls handle_inferior_event in a loop, |
| and until wait_for_inferior exits, this variable is changed only |
| by keep_going. */ |
| int trap_expected; |
| |
| /* Nonzero if the thread is being proceeded for a "finish" command |
| or a similar situation when return value should be printed. */ |
| int proceed_to_finish; |
| |
| /* Nonzero if the thread is being proceeded for an inferior function |
| call. */ |
| int in_infcall; |
| |
| enum step_over_calls_kind step_over_calls; |
| |
| /* Nonzero if stopped due to a step command. */ |
| int stop_step; |
| |
| /* Chain containing status of breakpoint(s) the thread stopped |
| at. */ |
| bpstat stop_bpstat; |
| |
| /* Whether the command that started the thread was a stepping |
| command. This is used to decide whether "set scheduler-locking |
| step" behaves like "on" or "off". */ |
| int stepping_command; |
| }; |
| |
| /* Inferior thread specific part of `struct infcall_suspend_state'. */ |
| |
| struct thread_suspend_state |
| { |
| /* Last signal that the inferior received (why it stopped). When |
| the thread is resumed, this signal is delivered. Note: the |
| target should not check whether the signal is in pass state, |
| because the signal may have been explicitly passed with the |
| "signal" command, which overrides "handle nopass". If the signal |
| should be suppressed, the core will take care of clearing this |
| before the target is resumed. */ |
| enum gdb_signal stop_signal; |
| |
| /* The reason the thread last stopped, if we need to track it |
| (breakpoint, watchpoint, etc.) */ |
| enum target_stop_reason stop_reason; |
| |
| /* The waitstatus for this thread's last event. */ |
| struct target_waitstatus waitstatus; |
| /* If true WAITSTATUS hasn't been handled yet. */ |
| int waitstatus_pending_p; |
| |
| /* Record the pc of the thread the last time it stopped. (This is |
| not the current thread's PC as that may have changed since the |
| last stop, e.g., "return" command, or "p $pc = 0xf000"). This is |
| used in coordination with stop_reason and waitstatus_pending_p: |
| if the thread's PC is changed since it last stopped, a pending |
| breakpoint waitstatus is discarded. */ |
| CORE_ADDR stop_pc; |
| }; |
| |
| typedef struct value *value_ptr; |
| DEF_VEC_P (value_ptr); |
| typedef VEC (value_ptr) value_vec; |
| |
| struct thread_info |
| { |
| struct thread_info *next; |
| ptid_t ptid; /* "Actual process id"; |
| In fact, this may be overloaded with |
| kernel thread id, etc. */ |
| |
| /* Each thread has two GDB IDs. |
| |
| a) The thread ID (Id). This consists of the pair of: |
| |
| - the number of the thread's inferior and, |
| |
| - the thread's thread number in its inferior, aka, the |
| per-inferior thread number. This number is unique in the |
| inferior but not unique between inferiors. |
| |
| b) The global ID (GId). This is a a single integer unique |
| between all inferiors. |
| |
| E.g.: |
| |
| (gdb) info threads -gid |
| Id GId Target Id Frame |
| * 1.1 1 Thread A 0x16a09237 in foo () at foo.c:10 |
| 1.2 3 Thread B 0x15ebc6ed in bar () at foo.c:20 |
| 1.3 5 Thread C 0x15ebc6ed in bar () at foo.c:20 |
| 2.1 2 Thread A 0x16a09237 in foo () at foo.c:10 |
| 2.2 4 Thread B 0x15ebc6ed in bar () at foo.c:20 |
| 2.3 6 Thread C 0x15ebc6ed in bar () at foo.c:20 |
| |
| Above, both inferiors 1 and 2 have threads numbered 1-3, but each |
| thread has its own unique global ID. */ |
| |
| /* The thread's global GDB thread number. This is exposed to MI, |
| Python/Scheme, visible with "info threads -gid", and is also what |
| the $_gthread convenience variable is bound to. */ |
| int global_num; |
| |
| /* The per-inferior thread number. This is unique in the inferior |
| the thread belongs to, but not unique between inferiors. This is |
| what the $_thread convenience variable is bound to. */ |
| int per_inf_num; |
| |
| /* The inferior this thread belongs to. */ |
| struct inferior *inf; |
| |
| /* The name of the thread, as specified by the user. This is NULL |
| if the thread does not have a user-given name. */ |
| char *name; |
| |
| /* Non-zero means the thread is executing. Note: this is different |
| from saying that there is an active target and we are stopped at |
| a breakpoint, for instance. This is a real indicator whether the |
| thread is off and running. */ |
| int executing; |
| |
| /* Non-zero if this thread is resumed from infrun's perspective. |
| Note that a thread can be marked both as not-executing and |
| resumed at the same time. This happens if we try to resume a |
| thread that has a wait status pending. We shouldn't let the |
| thread really run until that wait status has been processed, but |
| we should not process that wait status if we didn't try to let |
| the thread run. */ |
| int resumed; |
| |
| /* Frontend view of the thread state. Note that the THREAD_RUNNING/ |
| THREAD_STOPPED states are different from EXECUTING. When the |
| thread is stopped internally while handling an internal event, |
| like a software single-step breakpoint, EXECUTING will be false, |
| but STATE will still be THREAD_RUNNING. */ |
| enum thread_state state; |
| |
| /* If this is > 0, then it means there's code out there that relies |
| on this thread being listed. Don't delete it from the lists even |
| if we detect it exiting. */ |
| int refcount; |
| |
| /* State of GDB control of inferior thread execution. |
| See `struct thread_control_state'. */ |
| struct thread_control_state control; |
| |
| /* State of inferior thread to restore after GDB is done with an inferior |
| call. See `struct thread_suspend_state'. */ |
| struct thread_suspend_state suspend; |
| |
| int current_line; |
| struct symtab *current_symtab; |
| |
| /* Internal stepping state. */ |
| |
| /* Record the pc of the thread the last time it was resumed. (It |
| can't be done on stop as the PC may change since the last stop, |
| e.g., "return" command, or "p $pc = 0xf000"). This is maintained |
| by proceed and keep_going, and among other things, it's used in |
| adjust_pc_after_break to distinguish a hardware single-step |
| SIGTRAP from a breakpoint SIGTRAP. */ |
| CORE_ADDR prev_pc; |
| |
| /* Did we set the thread stepping a breakpoint instruction? This is |
| used in conjunction with PREV_PC to decide whether to adjust the |
| PC. */ |
| int stepped_breakpoint; |
| |
| /* Should we step over breakpoint next time keep_going is called? */ |
| int stepping_over_breakpoint; |
| |
| /* Should we step over a watchpoint next time keep_going is called? |
| This is needed on targets with non-continuable, non-steppable |
| watchpoints. */ |
| int stepping_over_watchpoint; |
| |
| /* Set to TRUE if we should finish single-stepping over a breakpoint |
| after hitting the current step-resume breakpoint. The context here |
| is that GDB is to do `next' or `step' while signal arrives. |
| When stepping over a breakpoint and signal arrives, GDB will attempt |
| to skip signal handler, so it inserts a step_resume_breakpoint at the |
| signal return address, and resume inferior. |
| step_after_step_resume_breakpoint is set to TRUE at this moment in |
| order to keep GDB in mind that there is still a breakpoint to step over |
| when GDB gets back SIGTRAP from step_resume_breakpoint. */ |
| int step_after_step_resume_breakpoint; |
| |
| /* Pointer to the state machine manager object that handles what is |
| left to do for the thread's execution command after the target |
| stops. Several execution commands use it. */ |
| struct thread_fsm *thread_fsm; |
| |
| /* This is used to remember when a fork or vfork event was caught by |
| a catchpoint, and thus the event is to be followed at the next |
| resume of the thread, and not immediately. */ |
| struct target_waitstatus pending_follow; |
| |
| /* True if this thread has been explicitly requested to stop. */ |
| int stop_requested; |
| |
| /* The initiating frame of a nexting operation, used for deciding |
| which exceptions to intercept. If it is null_frame_id no |
| bp_longjmp or bp_exception but longjmp has been caught just for |
| bp_longjmp_call_dummy. */ |
| struct frame_id initiating_frame; |
| |
| /* Private data used by the target vector implementation. */ |
| struct private_thread_info *priv; |
| |
| /* Function that is called to free PRIVATE. If this is NULL, then |
| xfree will be called on PRIVATE. */ |
| void (*private_dtor) (struct private_thread_info *); |
| |
| /* Branch trace information for this thread. */ |
| struct btrace_thread_info btrace; |
| |
| /* Flag which indicates that the stack temporaries should be stored while |
| evaluating expressions. */ |
| int stack_temporaries_enabled; |
| |
| /* Values that are stored as temporaries on stack while evaluating |
| expressions. */ |
| value_vec *stack_temporaries; |
| |
| /* Step-over chain. A thread is in the step-over queue if these are |
| non-NULL. If only a single thread is in the chain, then these |
| fields point to self. */ |
| struct thread_info *step_over_prev; |
| struct thread_info *step_over_next; |
| }; |
| |
| /* Create an empty thread list, or empty the existing one. */ |
| extern void init_thread_list (void); |
| |
| /* Add a thread to the thread list, print a message |
| that a new thread is found, and return the pointer to |
| the new thread. Caller my use this pointer to |
| initialize the private thread data. */ |
| extern struct thread_info *add_thread (ptid_t ptid); |
| |
| /* Same as add_thread, but does not print a message |
| about new thread. */ |
| extern struct thread_info *add_thread_silent (ptid_t ptid); |
| |
| /* Same as add_thread, and sets the private info. */ |
| extern struct thread_info *add_thread_with_info (ptid_t ptid, |
| struct private_thread_info *); |
| |
| /* Delete an existing thread list entry. */ |
| extern void delete_thread (ptid_t); |
| |
| /* Delete an existing thread list entry, and be quiet about it. Used |
| after the process this thread having belonged to having already |
| exited, for example. */ |
| extern void delete_thread_silent (ptid_t); |
| |
| /* Delete a step_resume_breakpoint from the thread database. */ |
| extern void delete_step_resume_breakpoint (struct thread_info *); |
| |
| /* Delete an exception_resume_breakpoint from the thread database. */ |
| extern void delete_exception_resume_breakpoint (struct thread_info *); |
| |
| /* Delete the single-step breakpoints of thread TP, if any. */ |
| extern void delete_single_step_breakpoints (struct thread_info *tp); |
| |
| /* Check if the thread has software single stepping breakpoints |
| set. */ |
| extern int thread_has_single_step_breakpoints_set (struct thread_info *tp); |
| |
| /* Check whether the thread has software single stepping breakpoints |
| set at PC. */ |
| extern int thread_has_single_step_breakpoint_here (struct thread_info *tp, |
| struct address_space *aspace, |
| CORE_ADDR addr); |
| |
| /* Translate the global integer thread id (GDB's homegrown id, not the |
| system's) into a "pid" (which may be overloaded with extra thread |
| information). */ |
| extern ptid_t global_thread_id_to_ptid (int num); |
| |
| /* Translate a 'pid' (which may be overloaded with extra thread |
| information) into the global integer thread id (GDB's homegrown id, |
| not the system's). */ |
| extern int ptid_to_global_thread_id (ptid_t ptid); |
| |
| /* Returns whether to show inferior-qualified thread IDs, or plain |
| thread numbers. Inferior-qualified IDs are shown whenever we have |
| multiple inferiors, or the only inferior left has number > 1. */ |
| extern int show_inferior_qualified_tids (void); |
| |
| /* Return a string version of THR's thread ID. If there are multiple |
| inferiors, then this prints the inferior-qualifier form, otherwise |
| it only prints the thread number. The result is stored in a |
| circular static buffer, NUMCELLS deep. */ |
| const char *print_thread_id (struct thread_info *thr); |
| |
| /* Boolean test for an already-known pid (which may be overloaded with |
| extra thread information). */ |
| extern int in_thread_list (ptid_t ptid); |
| |
| /* Boolean test for an already-known global thread id (GDB's homegrown |
| global id, not the system's). */ |
| extern int valid_global_thread_id (int global_id); |
| |
| /* Search function to lookup a thread by 'pid'. */ |
| extern struct thread_info *find_thread_ptid (ptid_t ptid); |
| |
| /* Find thread by GDB global thread ID. */ |
| struct thread_info *find_thread_global_id (int global_id); |
| |
| /* Finds the first thread of the inferior given by PID. If PID is -1, |
| returns the first thread in the list. */ |
| struct thread_info *first_thread_of_process (int pid); |
| |
| /* Returns any thread of process PID, giving preference to the current |
| thread. */ |
| extern struct thread_info *any_thread_of_process (int pid); |
| |
| /* Returns any non-exited thread of process PID, giving preference to |
| the current thread, and to not executing threads. */ |
| extern struct thread_info *any_live_thread_of_process (int pid); |
| |
| /* Change the ptid of thread OLD_PTID to NEW_PTID. */ |
| void thread_change_ptid (ptid_t old_ptid, ptid_t new_ptid); |
| |
| /* Iterator function to call a user-provided callback function |
| once for each known thread. */ |
| typedef int (*thread_callback_func) (struct thread_info *, void *); |
| extern struct thread_info *iterate_over_threads (thread_callback_func, void *); |
| |
| /* Traverse all threads. */ |
| #define ALL_THREADS(T) \ |
| for (T = thread_list; T; T = T->next) \ |
| |
| /* Traverse over all threads, sorted by inferior. */ |
| #define ALL_THREADS_BY_INFERIOR(inf, tp) \ |
| ALL_INFERIORS (inf) \ |
| ALL_THREADS (tp) \ |
| if (inf == tp->inf) |
| |
| /* Traverse all threads, except those that have THREAD_EXITED |
| state. */ |
| |
| #define ALL_NON_EXITED_THREADS(T) \ |
| for (T = thread_list; T; T = T->next) \ |
| if ((T)->state != THREAD_EXITED) |
| |
| /* Traverse all threads, including those that have THREAD_EXITED |
| state. Allows deleting the currently iterated thread. */ |
| #define ALL_THREADS_SAFE(T, TMP) \ |
| for ((T) = thread_list; \ |
| (T) != NULL ? ((TMP) = (T)->next, 1): 0; \ |
| (T) = (TMP)) |
| |
| extern int thread_count (void); |
| |
| /* Switch from one thread to another. Also sets the STOP_PC |
| global. */ |
| extern void switch_to_thread (ptid_t ptid); |
| |
| /* Switch from one thread to another. Does not read registers and |
| sets STOP_PC to -1. */ |
| extern void switch_to_thread_no_regs (struct thread_info *thread); |
| |
| /* Marks or clears thread(s) PTID as resumed. If PTID is |
| MINUS_ONE_PTID, applies to all threads. If ptid_is_pid(PTID) is |
| true, applies to all threads of the process pointed at by PTID. */ |
| extern void set_resumed (ptid_t ptid, int resumed); |
| |
| /* Marks thread PTID is running, or stopped. |
| If PTID is minus_one_ptid, marks all threads. */ |
| extern void set_running (ptid_t ptid, int running); |
| |
| /* Marks or clears thread(s) PTID as having been requested to stop. |
| If PTID is MINUS_ONE_PTID, applies to all threads. If |
| ptid_is_pid(PTID) is true, applies to all threads of the process |
| pointed at by PTID. If STOP, then the THREAD_STOP_REQUESTED |
| observer is called with PTID as argument. */ |
| extern void set_stop_requested (ptid_t ptid, int stop); |
| |
| /* NOTE: Since the thread state is not a boolean, most times, you do |
| not want to check it with negation. If you really want to check if |
| the thread is stopped, |
| |
| use (good): |
| |
| if (is_stopped (ptid)) |
| |
| instead of (bad): |
| |
| if (!is_running (ptid)) |
| |
| The latter also returns true on exited threads, most likelly not |
| what you want. */ |
| |
| /* Reports if in the frontend's perpective, thread PTID is running. */ |
| extern int is_running (ptid_t ptid); |
| |
| /* Is this thread listed, but known to have exited? We keep it listed |
| (but not visible) until it's safe to delete. */ |
| extern int is_exited (ptid_t ptid); |
| |
| /* In the frontend's perpective, is this thread stopped? */ |
| extern int is_stopped (ptid_t ptid); |
| |
| /* Marks thread PTID as executing, or not. If PTID is minus_one_ptid, |
| marks all threads. |
| |
| Note that this is different from the running state. See the |
| description of state and executing fields of struct |
| thread_info. */ |
| extern void set_executing (ptid_t ptid, int executing); |
| |
| /* Reports if thread PTID is executing. */ |
| extern int is_executing (ptid_t ptid); |
| |
| /* True if any (known or unknown) thread is or may be executing. */ |
| extern int threads_are_executing (void); |
| |
| /* Merge the executing property of thread PTID over to its thread |
| state property (frontend running/stopped view). |
| |
| "not executing" -> "stopped" |
| "executing" -> "running" |
| "exited" -> "exited" |
| |
| If PTID is minus_one_ptid, go over all threads. |
| |
| Notifications are only emitted if the thread state did change. */ |
| extern void finish_thread_state (ptid_t ptid); |
| |
| /* Same as FINISH_THREAD_STATE, but with an interface suitable to be |
| registered as a cleanup. PTID_P points to the ptid_t that is |
| passed to FINISH_THREAD_STATE. */ |
| extern void finish_thread_state_cleanup (void *ptid_p); |
| |
| /* Commands with a prefix of `thread'. */ |
| extern struct cmd_list_element *thread_cmd_list; |
| |
| extern void thread_command (char *tidstr, int from_tty); |
| |
| /* Print notices on thread events (attach, detach, etc.), set with |
| `set print thread-events'. */ |
| extern int print_thread_events; |
| |
| /* Prints the list of threads and their details on UIOUT. If |
| REQUESTED_THREADS, a list of GDB ids/ranges, is not NULL, only |
| print threads whose ID is included in the list. If PID is not -1, |
| only print threads from the process PID. Otherwise, threads from |
| all attached PIDs are printed. If both REQUESTED_THREADS is not |
| NULL and PID is not -1, then the thread is printed if it belongs to |
| the specified process. Otherwise, an error is raised. */ |
| extern void print_thread_info (struct ui_out *uiout, char *requested_threads, |
| int pid); |
| |
| extern struct cleanup *make_cleanup_restore_current_thread (void); |
| |
| /* Returns a pointer into the thread_info corresponding to |
| INFERIOR_PTID. INFERIOR_PTID *must* be in the thread list. */ |
| extern struct thread_info* inferior_thread (void); |
| |
| extern void update_thread_list (void); |
| |
| /* Delete any thread the target says is no longer alive. */ |
| |
| extern void prune_threads (void); |
| |
| /* Delete threads marked THREAD_EXITED. Unlike prune_threads, this |
| does not consult the target about whether the thread is alive right |
| now. */ |
| extern void delete_exited_threads (void); |
| |
| /* Return true if PC is in the stepping range of THREAD. */ |
| |
| int pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread); |
| |
| extern struct cleanup *enable_thread_stack_temporaries (ptid_t ptid); |
| |
| extern int thread_stack_temporaries_enabled_p (ptid_t ptid); |
| |
| extern void push_thread_stack_temporary (ptid_t ptid, struct value *v); |
| |
| extern struct value *get_last_thread_stack_temporary (ptid_t); |
| |
| extern int value_in_thread_stack_temporaries (struct value *, ptid_t); |
| |
| /* Add TP to the end of its inferior's pending step-over chain. */ |
| |
| extern void thread_step_over_chain_enqueue (struct thread_info *tp); |
| |
| /* Remove TP from its inferior's pending step-over chain. */ |
| |
| extern void thread_step_over_chain_remove (struct thread_info *tp); |
| |
| /* Return the next thread in the step-over chain starting at TP. NULL |
| if TP is the last entry in the chain. */ |
| |
| extern struct thread_info *thread_step_over_chain_next (struct thread_info *tp); |
| |
| /* Return true if TP is in the step-over chain. */ |
| |
| extern int thread_is_in_step_over_chain (struct thread_info *tp); |
| |
| /* Cancel any ongoing execution command. */ |
| |
| extern void thread_cancel_execution_command (struct thread_info *thr); |
| |
| /* Check whether it makes sense to access a register of the current |
| thread at this point. If not, throw an error (e.g., the thread is |
| executing). */ |
| extern void validate_registers_access (void); |
| |
| /* Returns whether to show which thread hit the breakpoint, received a |
| signal, etc. and ended up causing a user-visible stop. This is |
| true iff we ever detected multiple threads. */ |
| extern int show_thread_that_caused_stop (void); |
| |
| /* Print the message for a thread or/and frame selected. */ |
| extern void print_selected_thread_frame (struct ui_out *uiout, |
| user_selected_what selection); |
| |
| extern struct thread_info *thread_list; |
| |
| #endif /* GDBTHREAD_H */ |