gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / nat / linux-procfs.h

diff --git a/gdb/nat/linux-procfs.h b/gdb/nat/linux-procfs.h
index 5e2a9eadcb08f511c2a39431eb0d358cdfc8f1cb..b9862a8d8651458a8ef0e9239b3c3b27ddadda04 100644 (file)
--- a/gdb/nat/linux-procfs.h
+++ b/gdb/nat/linux-procfs.h
@@ -1,5 +1,5 @@
 /* Linux-specific PROCFS manipulation routines.
-   Copyright (C) 2011-2014 Free Software Foundation, Inc.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -16,34 +16,73 @@
    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 COMMON_LINUX_PROCFS_H
-#define COMMON_LINUX_PROCFS_H
+#ifndef NAT_LINUX_PROCFS_H
+#define NAT_LINUX_PROCFS_H
 
 #include <unistd.h>
 
 /* Return the TGID of LWPID from /proc/pid/status.  Returns -1 if not
-   found.  */
+   found.  Failure to open the /proc file results in a warning.  */
 
 extern int linux_proc_get_tgid (pid_t lwpid);
 
-/* Return the TracerPid of LWPID from /proc/pid/status.  Returns -1 if not
-   found.  */
+/* Return the TracerPid of LWPID from /proc/pid/status.  Returns -1 if
+   not found.  Does not warn on failure to open the /proc file.  */
 
-extern pid_t linux_proc_get_tracerpid (pid_t lwpid);
+extern pid_t linux_proc_get_tracerpid_nowarn (pid_t lwpid);
 
 /* Detect `T (stopped)' in `/proc/PID/status'.
    Other states including `T (tracing stop)' are reported as false.  */
 
 extern int linux_proc_pid_is_stopped (pid_t pid);
 
-/* Return non-zero if PID is a zombie.  */
+extern int linux_proc_pid_is_trace_stopped_nowarn (pid_t pid);
+
+/* Return non-zero if PID is a zombie.  Failure to open the
+   /proc/pid/status file results in a warning.  */
 
 extern int linux_proc_pid_is_zombie (pid_t pid);
 
-/* Return an opaque string identifying PID's NS namespace or NULL if
- * the information is unavailable.  The returned string must be
- * released with xfree.  */
+/* Return non-zero if PID is a zombie.  Does not warn on failure to
+   open the /proc file.  */
+
+extern int linux_proc_pid_is_zombie_nowarn (pid_t pid);
+
+/* Return non-zero if /proc/PID/status indicates that PID is gone
+   (i.e., in Z/Zombie or X/Dead state).  Failure to open the /proc
+   file is assumed to indicate the thread is gone.  */
+
+extern int linux_proc_pid_is_gone (pid_t pid);
+
+/* Return a string giving the thread's name or NULL if the
+   information is unavailable.  The returned value points to a statically
+   allocated buffer.  The value therefore becomes invalid at the next
+   linux_proc_tid_get_name call.  */
+
+extern const char *linux_proc_tid_get_name (ptid_t ptid);
+
+/* Callback function for linux_proc_attach_tgid_threads.  If the PTID
+   thread is not yet known, try to attach to it and return true,
+   otherwise return false.  */
+typedef int (*linux_proc_attach_lwp_func) (ptid_t ptid);
+
+/* If PID is a tgid, scan the /proc/PID/task/ directory for existing
+   threads, and call FUNC for each thread found.  */
+extern void linux_proc_attach_tgid_threads (pid_t pid,
+                                           linux_proc_attach_lwp_func func);
+
+/* Return true if the /proc/PID/task/ directory exists.  */
+extern int linux_proc_task_list_dir_exists (pid_t pid);
+
+/* Return the full absolute name of the executable file that was run
+   to create the process PID.  The returned value persists until this
+   function is next called.  */
+
+extern char *linux_proc_pid_to_exec_file (int pid);
+
+/* Display possible problems on this system.  Display them only once
+   per GDB execution.  */
 
-extern char *linux_proc_pid_get_ns (pid_t pid, const char *ns);
+extern void linux_proc_init_warnings ();
 
-#endif /* COMMON_LINUX_PROCFS_H */
+#endif /* NAT_LINUX_PROCFS_H */