89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/* Linux-specific PROCFS manipulation routines.
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Copyright (C) 2011-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef NAT_LINUX_PROCFS_H
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#define NAT_LINUX_PROCFS_H
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#include <unistd.h>
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/* Return the TGID of LWPID from /proc/pid/status. Returns -1 if not
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found. Failure to open the /proc file results in a warning. */
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extern int linux_proc_get_tgid (pid_t lwpid);
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/* Return the TracerPid of LWPID from /proc/pid/status. Returns -1 if
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not found. Does not warn on failure to open the /proc file. */
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extern pid_t linux_proc_get_tracerpid_nowarn (pid_t lwpid);
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/* Detect `T (stopped)' in `/proc/PID/status'.
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Other states including `T (tracing stop)' are reported as false. */
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extern int linux_proc_pid_is_stopped (pid_t pid);
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extern int linux_proc_pid_is_trace_stopped_nowarn (pid_t pid);
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/* Return non-zero if PID is a zombie. Failure to open the
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/proc/pid/status file results in a warning. */
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extern int linux_proc_pid_is_zombie (pid_t pid);
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/* Return non-zero if PID is a zombie. Does not warn on failure to
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open the /proc file. */
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extern int linux_proc_pid_is_zombie_nowarn (pid_t pid);
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/* Return non-zero if /proc/PID/status indicates that PID is gone
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(i.e., in Z/Zombie or X/Dead state). Failure to open the /proc
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file is assumed to indicate the thread is gone. */
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extern int linux_proc_pid_is_gone (pid_t pid);
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/* Return a string giving the thread's name or NULL if the
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information is unavailable. The returned value points to a statically
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allocated buffer. The value therefore becomes invalid at the next
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linux_proc_tid_get_name call. */
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extern const char *linux_proc_tid_get_name (ptid_t ptid);
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/* Callback function for linux_proc_attach_tgid_threads. If the PTID
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thread is not yet known, try to attach to it and return true,
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otherwise return false. */
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typedef int (*linux_proc_attach_lwp_func) (ptid_t ptid);
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/* If PID is a tgid, scan the /proc/PID/task/ directory for existing
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threads, and call FUNC for each thread found. */
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extern void linux_proc_attach_tgid_threads (pid_t pid,
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linux_proc_attach_lwp_func func);
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/* Return true if the /proc/PID/task/ directory exists. */
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extern int linux_proc_task_list_dir_exists (pid_t pid);
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/* Return the full absolute name of the executable file that was run
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to create the process PID. The returned value persists until this
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function is next called. */
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extern char *linux_proc_pid_to_exec_file (int pid);
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/* Display possible problems on this system. Display them only once
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per GDB execution. */
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extern void linux_proc_init_warnings ();
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#endif /* NAT_LINUX_PROCFS_H */
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