-#if HAVE_PROCFS
-
-/* Process enumeration and access via /proc. */
-
-static Lisp_Object
-procfs_list_system_processes ()
-{
- Lisp_Object procdir, match, proclist, next;
- struct gcpro gcpro1, gcpro2;
- register Lisp_Object tail;
-
- GCPRO2 (procdir, match);
- /* For every process on the system, there's a directory in the
- "/proc" pseudo-directory whose name is the numeric ID of that
- process. */
- procdir = build_string ("/proc");
- match = build_string ("[0-9]+");
- proclist = directory_files_internal (procdir, Qnil, match, Qt, 0, Qnil);
-
- /* `proclist' gives process IDs as strings. Destructively convert
- each string into a number. */
- for (tail = proclist; CONSP (tail); tail = next)
- {
- next = XCDR (tail);
- XSETCAR (tail, Fstring_to_number (XCAR (tail), Qnil));
- }
- UNGCPRO;
-
- /* directory_files_internal returns the files in reverse order; undo
- that. */
- proclist = Fnreverse (proclist);
- return proclist;
-}
-
-static void
-time_from_jiffies (unsigned long long tval, long hz,
- time_t *sec, unsigned *usec)
-{
- unsigned long long ullsec;
-
- *sec = tval / hz;
- ullsec = *sec;
- tval -= ullsec * hz;
- /* Careful: if HZ > 1 million, then integer division by it yields zero. */
- if (hz <= 1000000)
- *usec = tval * 1000000 / hz;
- else
- *usec = tval / (hz / 1000000);
-}
-
-static Lisp_Object
-ltime_from_jiffies (unsigned long long tval, long hz)
-{
- time_t sec;
- unsigned usec;
-
- time_from_jiffies (tval, hz, &sec, &usec);
-
- return list3 (make_number ((sec >> 16) & 0xffff),
- make_number (sec & 0xffff),
- make_number (usec));
-}
-
-static void
-get_up_time (time_t *sec, unsigned *usec)
-{
- FILE *fup;
-
- *sec = *usec = 0;
-
- BLOCK_INPUT;
- fup = fopen ("/proc/uptime", "r");
-
- if (fup)
- {
- double uptime, idletime;
-
- /* The numbers in /proc/uptime use C-locale decimal point, but
- we already set ourselves to the C locale (see `fixup_locale'
- in emacs.c). */
- if (2 <= fscanf (fup, "%lf %lf", &uptime, &idletime))
- {
- *sec = uptime;
- *usec = (uptime - *sec) * 1000000;
- }
- fclose (fup);
- }
- UNBLOCK_INPUT;
-}
-
-#define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
-#define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
-
-static Lisp_Object
-procfs_ttyname (rdev)
-{
- FILE *fdev = NULL;
- char name[PATH_MAX];
-
- BLOCK_INPUT;
- fdev = fopen ("/proc/tty/drivers", "r");
-
- if (fdev)
- {
- unsigned major;
- unsigned long minor_beg, minor_end;
- char minor[25]; /* 2 32-bit numbers + dash */
- char *endp;
-
- while (!feof (fdev) && !ferror (fdev))
- {
- if (3 <= fscanf (fdev, "%*s %s %u %s %*s\n", name, &major, minor)
- && major == MAJOR (rdev))
- {
- minor_beg = strtoul (minor, &endp, 0);
- if (*endp == '\0')
- minor_end = minor_beg;
- else if (*endp == '-')
- minor_end = strtoul (endp + 1, &endp, 0);
- else
- continue;
-
- if (MINOR (rdev) >= minor_beg && MINOR (rdev) <= minor_end)
- {
- sprintf (name + strlen (name), "%lu", MINOR (rdev));
- break;
- }
- }
- }
- fclose (fdev);
- }
- UNBLOCK_INPUT;
- return build_string (name);
-}
-
-static unsigned long
-procfs_get_total_memory (void)
-{
- FILE *fmem = NULL;
- unsigned long retval = 2 * 1024 * 1024; /* default: 2GB */
-
- BLOCK_INPUT;
- fmem = fopen ("/proc/meminfo", "r");
-
- if (fmem)
- {
- unsigned long entry_value;
- char entry_name[20]; /* the longest I saw is 13+1 */
-
- while (!feof (fmem) && !ferror (fmem))
- {
- if (2 <= fscanf (fmem, "%s %lu kB\n", entry_name, &entry_value)
- && strcmp (entry_name, "MemTotal:") == 0)
- {
- retval = entry_value;
- break;
- }
- }
- fclose (fmem);
- }
- UNBLOCK_INPUT;
- return retval;
-}
-
-static Lisp_Object
-procfs_system_process_attributes (pid)
- Lisp_Object pid;
-{
- char procfn[PATH_MAX], fn[PATH_MAX];
- struct stat st;
- struct passwd *pw;
- struct group *gr;
- long clocks_per_sec;
- char *procfn_end;
- char procbuf[1025], *p, *q;
- int fd;
- ssize_t nread;
- const char *cmd;
- char *cmdline = NULL;
- size_t cmdsize;
- unsigned char c;
- int proc_id, ppid, uid, gid, pgrp, sess, tty, tpgid, thcount;
- unsigned long long utime, stime, cutime, cstime, start;
- long priority, nice, rss;
- unsigned long minflt, majflt, cminflt, cmajflt, vsize;
- time_t sec;
- unsigned usec;
- EMACS_TIME tnow, tstart, tboot, telapsed,ttotal;
- double pcpu, pmem;
- Lisp_Object attrs = Qnil;
- Lisp_Object cmd_str, decoded_cmd, tem;
- struct gcpro gcpro1, gcpro2;
- EMACS_INT uid_eint, gid_eint;
-
- CHECK_NUMBER_OR_FLOAT (pid);
- proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid);
- sprintf (procfn, "/proc/%lu", proc_id);
- if (stat (procfn, &st) < 0)
- return attrs;
-
- GCPRO2 (attrs, decoded_cmd);
-
- /* euid egid */
- uid = st.st_uid;
- /* Use of EMACS_INT stops GCC whining about limited range of data type. */
- uid_eint = uid;
- attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid_eint)), attrs);
- BLOCK_INPUT;
- pw = getpwuid (uid);
- UNBLOCK_INPUT;
- if (pw)
- attrs = Fcons (Fcons (Quser, build_string (pw->pw_name)), attrs);
-
- gid = st.st_gid;
- gid_eint = gid;
- attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid_eint)), attrs);
- BLOCK_INPUT;
- gr = getgrgid (gid);
- UNBLOCK_INPUT;
- if (gr)
- attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs);
-
- strcpy (fn, procfn);
- procfn_end = fn + strlen (fn);
- strcpy (procfn_end, "/stat");
- fd = emacs_open (fn, O_RDONLY, 0);
- if (fd >= 0 && (nread = emacs_read (fd, procbuf, sizeof(procbuf) - 1)) > 0)
- {
- procbuf[nread] = '\0';
- p = procbuf;
-
- cmd = NULL;
- p = strchr (p, '(');
- if (p != NULL)
- {
- q = strrchr (p + 1, ')');
- /* comm */
- if (q != NULL)
- {
- cmd = p + 1;
- cmdsize = q - cmd;
- }
- }
- if (cmd == NULL)
- {
- cmd = "???";
- cmdsize = 3;
- }
- /* Command name is encoded in locale-coding-system; decode it. */
- cmd_str = make_unibyte_string (cmd, cmdsize);
- decoded_cmd = code_convert_string_norecord (cmd_str,
- Vlocale_coding_system, 0);
- attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs);
-
- if (q)
- {
- EMACS_INT ppid_eint, pgrp_eint, sess_eint, tpgid_eint, thcount_eint;
- p = q + 2;
- /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
- sscanf (p, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
- &c, &ppid, &pgrp, &sess, &tty, &tpgid,
- &minflt, &cminflt, &majflt, &cmajflt,
- &utime, &stime, &cutime, &cstime,
- &priority, &nice, &thcount, &start, &vsize, &rss);
- {
- char state_str[2];
-
- state_str[0] = c;
- state_str[1] = '\0';
- tem = build_string (state_str);
- attrs = Fcons (Fcons (Qstate, tem), attrs);
- }
- /* Stops GCC whining about limited range of data type. */
- ppid_eint = ppid;
- pgrp_eint = pgrp;
- sess_eint = sess;
- tpgid_eint = tpgid;
- thcount_eint = thcount;
- attrs = Fcons (Fcons (Qppid, make_fixnum_or_float (ppid_eint)), attrs);
- attrs = Fcons (Fcons (Qpgrp, make_fixnum_or_float (pgrp_eint)), attrs);
- attrs = Fcons (Fcons (Qsess, make_fixnum_or_float (sess_eint)), attrs);
- attrs = Fcons (Fcons (Qttname, procfs_ttyname (tty)), attrs);
- attrs = Fcons (Fcons (Qtpgid, make_fixnum_or_float (tpgid_eint)), attrs);
- attrs = Fcons (Fcons (Qminflt, make_fixnum_or_float (minflt)), attrs);
- attrs = Fcons (Fcons (Qmajflt, make_fixnum_or_float (majflt)), attrs);
- attrs = Fcons (Fcons (Qcminflt, make_fixnum_or_float (cminflt)), attrs);
- attrs = Fcons (Fcons (Qcmajflt, make_fixnum_or_float (cmajflt)), attrs);
- clocks_per_sec = sysconf (_SC_CLK_TCK);
- if (clocks_per_sec < 0)
- clocks_per_sec = 100;
- attrs = Fcons (Fcons (Qutime,
- ltime_from_jiffies (utime, clocks_per_sec)),
- attrs);
- attrs = Fcons (Fcons (Qstime,
- ltime_from_jiffies (stime, clocks_per_sec)),
- attrs);
- attrs = Fcons (Fcons (Qcutime,
- ltime_from_jiffies (cutime, clocks_per_sec)),
- attrs);
- attrs = Fcons (Fcons (Qcstime,
- ltime_from_jiffies (cstime, clocks_per_sec)),
- attrs);
- attrs = Fcons (Fcons (Qpri, make_number (priority)), attrs);
- attrs = Fcons (Fcons (Qnice, make_number (nice)), attrs);
- attrs = Fcons (Fcons (Qthcount, make_fixnum_or_float (thcount_eint)), attrs);
- EMACS_GET_TIME (tnow);
- get_up_time (&sec, &usec);
- EMACS_SET_SECS (telapsed, sec);
- EMACS_SET_USECS (telapsed, usec);
- EMACS_SUB_TIME (tboot, tnow, telapsed);
- time_from_jiffies (start, clocks_per_sec, &sec, &usec);
- EMACS_SET_SECS (tstart, sec);
- EMACS_SET_USECS (tstart, usec);
- EMACS_ADD_TIME (tstart, tboot, tstart);
- attrs = Fcons (Fcons (Qstart,
- list3 (make_number
- ((EMACS_SECS (tstart) >> 16) & 0xffff),
- make_number
- (EMACS_SECS (tstart) & 0xffff),
- make_number
- (EMACS_USECS (tstart)))),
- attrs);
- attrs = Fcons (Fcons (Qvsize, make_fixnum_or_float (vsize/1024)), attrs);
- attrs = Fcons (Fcons (Qrss, make_fixnum_or_float (4*rss)), attrs);
- EMACS_SUB_TIME (telapsed, tnow, tstart);
- attrs = Fcons (Fcons (Qetime,
- list3 (make_number
- ((EMACS_SECS (telapsed) >> 16) & 0xffff),
- make_number
- (EMACS_SECS (telapsed) & 0xffff),
- make_number
- (EMACS_USECS (telapsed)))),
- attrs);
- time_from_jiffies (utime + stime, clocks_per_sec, &sec, &usec);
- pcpu = (sec + usec / 1000000.0) / (EMACS_SECS (telapsed) + EMACS_USECS (telapsed) / 1000000.0);
- attrs = Fcons (Fcons (Qpcpu, make_float (pcpu)), attrs);
- pmem = 4.0 * 100 * rss / procfs_get_total_memory ();
- if (pmem > 100)
- pmem = 100;
- attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs);
- }
- }
- if (fd >= 0)
- emacs_close (fd);
-
- /* args */
- strcpy (procfn_end, "/cmdline");
- fd = emacs_open (fn, O_RDONLY, 0);
- if (fd >= 0)
- {
- for (cmdline_size = 0; emacs_read (fd, &c, 1) == 1; cmdline_size++)
- {
- if (isspace (c) || c == '\\')
- cmdline_size++; /* for later quoting, see below */
- }
- if (cmdline_size)
- {
- cmdline = xmalloc (cmdline_size + 1);
- lseek (fd, 0L, SEEK_SET);
- cmdline[0] = '\0';
- if ((nread = read (fd, cmdline, cmdline_size)) >= 0)
- cmdline[nread++] = '\0';
- /* We don't want trailing null characters. */
- for (p = cmdline + nread - 1; p > cmdline && !*p; p--)
- nread--;
- for (p = cmdline; p < cmdline + nread; p++)
- {
- /* Escape-quote whitespace and backslashes. */
- if (isspace (*p) || *p == '\\')
- {
- memmove (p + 1, p, nread - (p - cmdline));
- nread++;
- *p++ = '\\';
- }
- else if (*p == '\0')
- *p = ' ';
- }
- cmdline_size = nread;
- }
- else
- {
- cmdline_size = cmdsize + 2;
- cmdline = xmalloc (cmdline_size + 1);
- strcpy (cmdline, "[");
- strcat (strncat (cmdline, cmd, cmdsize), "]");
- }
- emacs_close (fd);
- /* Command line is encoded in locale-coding-system; decode it. */
- cmd_str = make_unibyte_string (cmdline, cmdline_size);
- decoded_cmd = code_convert_string_norecord (cmd_str,
- Vlocale_coding_system, 0);
- xfree (cmdline);
- attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs);
- }
-
- UNGCPRO;
- return attrs;
-}
-
-#endif /* !HAVE_PROCFS */
-