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linux-procfs.h
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1 /* Linux-specific PROCFS manipulation routines.
2 Copyright (C) 2011-2018 Free Software Foundation, Inc.
3
4 This file is part of GDB.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18
19 #ifndef COMMON_LINUX_PROCFS_H
20 #define COMMON_LINUX_PROCFS_H
21
22 #include <unistd.h>
23
24 /* Return the TGID of LWPID from /proc/pid/status. Returns -1 if not
25 found. Failure to open the /proc file results in a warning. */
26
27 extern int linux_proc_get_tgid (pid_t lwpid);
28
29 /* Return the TracerPid of LWPID from /proc/pid/status. Returns -1 if
30 not found. Does not warn on failure to open the /proc file. */
31
32 extern pid_t linux_proc_get_tracerpid_nowarn (pid_t lwpid);
33
34 /* Detect `T (stopped)' in `/proc/PID/status'.
35 Other states including `T (tracing stop)' are reported as false. */
36
37 extern int linux_proc_pid_is_stopped (pid_t pid);
38
39 extern int linux_proc_pid_is_trace_stopped_nowarn (pid_t pid);
40
41 /* Return non-zero if PID is a zombie. Failure to open the
42 /proc/pid/status file results in a warning. */
43
44 extern int linux_proc_pid_is_zombie (pid_t pid);
45
46 /* Return non-zero if PID is a zombie. Does not warn on failure to
47 open the /proc file. */
48
49 extern int linux_proc_pid_is_zombie_nowarn (pid_t pid);
50
51 /* Return non-zero if /proc/PID/status indicates that PID is gone
52 (i.e., in Z/Zombie or X/Dead state). Failure to open the /proc
53 file is assumed to indicate the thread is gone. */
54
55 extern int linux_proc_pid_is_gone (pid_t pid);
56
57 /* Return a string giving the thread's name or NULL if the
58 information is unavailable. The returned value points to a statically
59 allocated buffer. The value therefore becomes invalid at the next
60 linux_proc_tid_get_name call. */
61
62 extern const char *linux_proc_tid_get_name (ptid_t ptid);
63
64 /* Callback function for linux_proc_attach_tgid_threads. If the PTID
65 thread is not yet known, try to attach to it and return true,
66 otherwise return false. */
67 typedef int (*linux_proc_attach_lwp_func) (ptid_t ptid);
68
69 /* If PID is a tgid, scan the /proc/PID/task/ directory for existing
70 threads, and call FUNC for each thread found. */
71 extern void linux_proc_attach_tgid_threads (pid_t pid,
72 linux_proc_attach_lwp_func func);
73
74 /* Return true if the /proc/PID/task/ directory exists. */
75 extern int linux_proc_task_list_dir_exists (pid_t pid);
76
77 /* Return the full absolute name of the executable file that was run
78 to create the process PID. The returned value persists until this
79 function is next called. */
80
81 extern char *linux_proc_pid_to_exec_file (int pid);
82
83 #endif /* COMMON_LINUX_PROCFS_H */
linux_proc_attach_lwp_func
int(* linux_proc_attach_lwp_func)(ptid_t ptid)
Definition: linux-procfs.h:67
linux_proc_pid_is_gone
int linux_proc_pid_is_gone(pid_t pid)
Definition: linux-procfs.c:155
linux_proc_get_tgid
int linux_proc_get_tgid(pid_t lwpid)
Definition: linux-procfs.c:58
pid
mach_port_t mach_port_t name mach_port_t mach_port_t name kern_return_t int int rusage_t pid_t pid
Definition: gnu-nat.c:1824
func
void(* func)(char *)
Definition: remote-fileio.c:1104
linux_proc_attach_tgid_threads
void linux_proc_attach_tgid_threads(pid_t pid, linux_proc_attach_lwp_func func)
Definition: linux-procfs.c:275
linux_proc_tid_get_name
const char * linux_proc_tid_get_name(ptid_t ptid)
Definition: linux-procfs.c:235
ptid_t
Definition: ptid.h:35
linux_proc_pid_is_stopped
int linux_proc_pid_is_stopped(pid_t pid)
Definition: linux-procfs.c:193
linux_proc_get_tracerpid_nowarn
pid_t linux_proc_get_tracerpid_nowarn(pid_t lwpid)
Definition: linux-procfs.c:66
linux_proc_pid_is_zombie
int linux_proc_pid_is_zombie(pid_t pid)
Definition: linux-procfs.c:227
linux_proc_pid_is_trace_stopped_nowarn
int linux_proc_pid_is_trace_stopped_nowarn(pid_t pid)
Definition: linux-procfs.c:202
linux_proc_pid_is_zombie_nowarn
int linux_proc_pid_is_zombie_nowarn(pid_t pid)
Definition: linux-procfs.c:219
linux_proc_pid_to_exec_file
char * linux_proc_pid_to_exec_file(int pid)
Definition: linux-procfs.c:345
linux_proc_task_list_dir_exists
int linux_proc_task_list_dir_exists(pid_t pid)
Definition: linux-procfs.c:333