3 // Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
4 // based on vserver-stat.cc by Guillaum Dallaire and Jacques Gelinas
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 2, or (at your option)
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.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 vserver-stat help you to see all the active context currently in the kernel
26 2003-01-08 Jacques Gelinas: Shows vserver description
27 2002-02-28 Jacques Gelinas: Use dynamic system call
28 2002-06-05 Martial Rioux : fix memory output error
29 2002-12-05 Martial Rioux : fix output glitch
30 2001-11-29 added uptime/ctx stat
31 2001-11-20 added vmsize, rss, stime and utime stat
46 #include <sys/types.h>
55 #define ENSC_WRAPPERS_DIRENT 1
56 #define ENSC_WRAPPERS_VSERVER 1
57 #define ENSC_WRAPPERS_FCNTL 1
58 #define ENSC_WRAPPERS_UNISTD 1
61 #define PROC_DIR_NAME "/proc"
62 #define CTX_DIR_NAME "/var/run/vservers/"
63 #define CTX_NAME_MAX_LEN 50
65 int wrapper_exit_code = 1;
73 long start_time_oldest;
74 long stime_total, utime_total;
75 char name[CTX_NAME_MAX_LEN];
76 struct ctx_list *next;
81 long VmSize; // number of pages of virtual memory
82 long VmRSS; // resident set size from /proc/#/stat
83 long start_time; // start time of process -- seconds since 1-1-70
84 long stime, utime; // kernel & user-mode CPU time accumulated by process
85 long cstime, cutime; // cumulative time of process and reaped children
92 enum { tpUNSET, tpCTX, tpPID } type;
95 unsigned int interval;
103 showHelp(int fd, char const *cmd, int res)
105 WRITE_MSG(fd, "Usage: ");
109 "Show informations about all the active context.\n\n"
110 " CTX# Context number\n"
111 " #0 = root context\n"
112 " #1 = monitoring context\n"
113 " PROC QTY Quantity of processes in each context\n"
114 " VSZ Number of pages of virtual memory\n"
115 " RSS Resident set size\n"
116 " userTIME User-mode CPU time accumulated\n"
117 " sysTIME Kernel-mode CPU time accumulated\n"
118 " UPTIME Uptime/context\n"
119 " NAME Virtual server name\n"
128 "vserver-stat " VERSION " -- show virtual context statistics\n"
129 "This program is part of " PACKAGE_STRING "\n\n"
130 "Copyright (C) 2003 Enrico Scholz\n"
131 VERSION_COPYRIGHT_DISCLAIMER);
136 // return uptime (in ms) from /proc/uptime
147 // open the /proc/uptime file
148 fd = Eopen("/proc/uptime", O_RDONLY, 0);
149 len = Eread(fd, buffer, sizeof buffer);
151 if (len==sizeof(buffer)) {
152 WRITE_MSG(2, "Too much data in /proc/uptime; aborting...\n");
157 while (len>0 && buffer[len-1]=='\n') --len;
160 secs = strtol(buffer, &errptr, 10);
161 if (*errptr!='.') errptr = buffer;
162 else msecs = strtol(errptr+1, &errptr, 10);
164 if ((*errptr!='\0' && *errptr!=' ') || errptr==buffer) {
165 WRITE_MSG(2, "Bad data in /proc/uptime\n");
169 return secs*100 + msecs;
172 // insert a new record to the list
173 static struct ctx_list *
174 insert_ctx(int ctx, struct ctx_list *next)
176 struct ctx_list *new;
178 new = (struct ctx_list *)malloc(sizeof(struct ctx_list));
180 new->process_count = 0;
181 new->VmSize_total = 0;
182 new->VmRSS_total = 0;
183 new->utime_total = 0;
184 new->stime_total = 0;
185 new->start_time_oldest = 0;
192 // compute the process info into the list
194 add_ctx(struct ctx_list *list, struct process_info *process)
196 list->process_count ++;
197 list->VmSize_total += process->VmSize;
198 list->VmRSS_total += process->VmRSS;
199 list->utime_total += process->utime + process->cutime;
200 list->stime_total += process->stime + process->cstime;
202 if (list->start_time_oldest == 0) // first entry
203 list->start_time_oldest = process->start_time;
205 if (list->start_time_oldest > process->start_time)
206 list->start_time_oldest = process->start_time;
209 // increment the count number in the ctx record using ctx number
211 count_ctx(struct ctx_list **ptr, struct process_info *process)
214 if (*ptr==0 || (*ptr)->ctx > process->s_context) {
215 *ptr = insert_ctx(process->s_context, *ptr);
219 if ((*ptr)->ctx == process->s_context)
225 add_ctx(*ptr, process);
230 free_ctx(struct ctx_list *list)
232 struct ctx_list *prev;
234 for(;list != NULL; list = prev)
242 // open the process's status file to get the ctx number, and other stat
243 struct process_info *get_process_info(char *pid)
248 size_t idx, l=strlen(pid);
249 static struct process_info process;
251 process.s_context = vc_get_task_xid(atoi(pid));
253 if (process.s_context==VC_NOCTX) {
255 WRITE_MSG(2, "vc_get_task_xid(");
258 WRITE_STR(2, strerror(err));
262 memcpy(buffer, "/proc/", 6); idx = 6;
263 memcpy(buffer+idx, pid, l); idx += l;
264 memcpy(buffer+idx, "/stat", 6);
266 // open the /proc/#/stat file
267 if ((fd = open(buffer, O_RDONLY, 0)) == -1)
269 // put the file in a buffer
270 if (read(fd, buffer, sizeof(buffer)) < 1)
275 p = strchr(buffer, ')'); // go after the PID (process_name)
276 for (idx = 0; idx<12 && *p!='\0'; ++p)
277 if ((*p)==' ') ++idx;
279 process.utime = strtol(p, &p, 10);
280 process.stime = strtol(p+1, &p, 10);
281 process.cutime = strtol(p+1, &p, 10);
282 process.cstime = strtol(p+1, &p, 10);
284 for (idx = 0; idx<5 && *p!='\0'; ++p)
285 if ((*p)==' ') ++idx;
287 process.start_time = strtol(p, &p, 10);
288 process.VmSize = strtol(p+1, &p, 10);
289 process.VmRSS = strtol(p+1, &p, 10);
297 fillUintZero(char *buf, unsigned long val, size_t cnt)
301 l = utilvserver_fmt_ulong(buf, val);
303 memmove(buf+cnt-l, buf, l);
304 memset(buf, '0', cnt-l);
312 shortenMem(char *buf, unsigned long val)
314 char const * SUFFIXES[] = { " ", "K", "M", "G", "T", "+" };
316 char const * suffix = "+";
318 unsigned int mod = 0;
320 for (i=0; i<6; ++i) {
322 suffix = SUFFIXES[i];
325 mod = 10*(val & 1023)/1024;
329 if (val >9999) val=9999;
330 if (val>=1000) mod=0;
332 l = utilvserver_fmt_ulong(tmp, val);
335 l += utilvserver_fmt_ulong(tmp+l, mod);
337 i = 7-l-strlen(suffix);
339 memcpy(buf+i, tmp, l);
340 memcpy(buf+i+l, suffix, strlen(suffix));
344 shortenTime(char *buf, uint64_t t)
349 unsigned long hh, mm, ss, ms;
362 ptr += utilvserver_fmt_ulong(ptr, t);
364 ptr += fillUintZero(ptr, hh, 2);
366 ptr += fillUintZero(ptr, mm, 2);
369 ptr += utilvserver_fmt_ulong(ptr, hh);
371 ptr += fillUintZero(ptr, mm, 2);
373 ptr += fillUintZero(ptr, ss, 2);
376 ptr += utilvserver_fmt_ulong(ptr, mm);
378 ptr += fillUintZero(ptr, ss, 2);
380 ptr += fillUintZero(ptr, ms, 2);
384 memcpy(buf+10-(ptr-tmp), tmp, ptr-tmp);
387 void showContexts(struct ctx_list *list)
389 uint64_t uptime = getUptime();
391 WRITE_MSG(1, "CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME\n");
393 char buf[sizeof(xid_t)*3 + 512];
394 char tmp[sizeof(int)*3 + 2];
397 memset(buf, ' ', sizeof(buf));
398 l = utilvserver_fmt_long(buf, list->ctx);
399 l = utilvserver_fmt_long(tmp, list->process_count);
400 memcpy(buf+10-l, tmp, l);
402 shortenMem (buf+10, list->VmSize_total);
403 shortenMem (buf+17, list->VmRSS_total);
404 shortenTime(buf+24, list->utime_total);
405 shortenTime(buf+34, list->stime_total);
406 shortenTime(buf+44, uptime - list->start_time_oldest);
409 case 0 : strncpy(buf+55, "root server", 20); break;
410 case 1 : strncpy(buf+55, "monitoring server", 20); break;
414 vcCfgStyle cfgstyle = vcCFG_AUTO;
416 if ((cfgpath = vc_getVserverByCtx(list->ctx, &cfgstyle, 0))!=0 &&
417 (name = vc_getVserverName(cfgpath, cfgstyle))!=0)
418 strncpy(buf+55, name, 20);
431 int main(int argc, char **argv)
434 struct dirent *dir_entry;
438 process_name = argv[0];
441 if (strcmp(argv[1], "--help") ==0) showHelp(1, argv[0], 0);
442 if (strcmp(argv[1], "--version")==0) showVersion();
445 WRITE_MSG(2, "Unknown parameter, use '--help' for more information\n");
449 // do not include own stat
453 // try to switch in context 1
454 if (vc_get_task_xid(0)!=1)
455 Evc_new_s_context(1, 0,0);
458 // create the fist...
459 my_ctx_list = insert_ctx(0, NULL);
460 // init with the default name for the context 0
461 strncpy(my_ctx_list->name, "root server", CTX_NAME_MAX_LEN);
464 Echdir(PROC_DIR_NAME);
465 proc_dir = Eopendir(".");
466 while ((dir_entry = readdir(proc_dir)) != NULL)
468 // select only process file
469 if (!isdigit(*dir_entry->d_name))
472 if (atoi(dir_entry->d_name) != my_pid)
473 count_ctx(&my_ctx_list, get_process_info(dir_entry->d_name));
478 // output the ctx_list
479 showContexts(my_ctx_list);
482 free_ctx(my_ctx_list);