/* Multi-process/thread control defs for GDB, the GNU debugger.
- Copyright (C) 1987-1993, 1997-2000, 2007-2012 Free Software
- Foundation, Inc.
+ Copyright (C) 1987-2014 Free Software Foundation, Inc.
Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
#include "frame.h"
#include "ui-out.h"
#include "inferior.h"
+#include "btrace.h"
/* Frontend view of the thread state. Possible extensions: stepping,
finishing, until(ling),... */
CORE_ADDR step_range_start; /* Inclusive */
CORE_ADDR step_range_end; /* Exclusive */
+ /* 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. */
/* Chain containing status of breakpoint(s) the thread stopped
at. */
bpstat stop_bpstat;
+
+ /* The interpreter that issued the execution command. NULL if the
+ thread was resumed as a result of a command applied to some other
+ thread (e.g., "next" with scheduler-locking off). */
+ struct interp *command_interp;
};
/* Inferior thread specific part of `struct infcall_suspend_state'.
struct thread_suspend_state
{
- /* Last signal that the inferior received (why it stopped). */
+ /* 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;
};
thread is off and running. */
int executing;
- /* Frontend view of the thread state. Note that the RUNNING/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 running will
- still be true. As a possible future extension, this could turn
- into enum { stopped, exited, stepping, finishing, until(ling),
- running ... } */
- int state;
+ /* 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
/* 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;
};
/* Create an empty thread list, or empty the existing one. */
returns the first thread in the list. */
struct thread_info *first_thread_of_process (int pid);
-/* Returns any thread of process 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 for
- not executing threads. */
+/* 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. */
typedef int (*thread_callback_func) (struct thread_info *, void *);
extern struct thread_info *iterate_over_threads (thread_callback_func, void *);
+/* 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)
+
extern int thread_count (void);
/* Switch from one thread to another. */
extern void switch_to_thread (ptid_t ptid);
/* Marks thread PTID is running, or stopped.
- If PIDGET (PTID) is -1, marks all threads. */
+ If ptid_get_pid (PTID) is -1, marks all threads. */
extern void set_running (ptid_t ptid, int running);
/* Marks or clears thread(s) PTID as having been requested to stop.
/* In the frontend's perpective, is this thread stopped? */
extern int is_stopped (ptid_t ptid);
-/* In the frontend's perpective is there any thread running? */
-extern int any_running (void);
-
-/* Marks thread PTID as executing, or not. If PIDGET (PTID) is -1,
+/* Marks thread PTID as executing, or not. If ptid_get_pid (PTID) is -1,
marks all threads.
Note that this is different from the running state. See the
/* 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).
"executing" -> "running"
"exited" -> "exited"
- If PIDGET (PTID) is -1, go over all threads.
+ If ptid_get_pid (PTID) is -1, go over all threads.
Notifications are only emitted if the thread state did change. */
extern void finish_thread_state (ptid_t ptid);
extern void update_thread_list (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 thread_info *thread_list;
+
#endif /* GDBTHREAD_H */