From 1f8dd205cb1bcaa45b21955e46d60ee983d91c33 Mon Sep 17 00:00:00 2001 From: Gardouille Date: Fri, 26 Sep 2014 00:33:44 +0200 Subject: [PATCH] Add a script to show informations of a process. --- .gitignore | 2 + procstat.c | 240 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 242 insertions(+) create mode 100644 .gitignore create mode 100644 procstat.c diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..47c6788 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +# File produce by procstat.c +procstat diff --git a/procstat.c b/procstat.c new file mode 100644 index 0000000..a743542 --- /dev/null +++ b/procstat.c @@ -0,0 +1,240 @@ +/* + * Displays linux /proc/pid/stat in human-readable format + * + * Build: gcc -o procstat procstat.c + * Usage: procstat pid + * cat /proc/pid/stat | procstat + * + * Homepage: http://www.brokestream.com/procstat.html + * Version : 2009-03-05 + * + * Ivan Tikhonov, http://www.brokestream.com, kefeer@netangels.ru + * + * 2007-09-19 changed HZ=100 error to warning + * + * 2009-03-05 tickspersec are taken from sysconf (Sabuj Pattanayek) + * + */ + + +/* Copyright (C) 2009 Ivan Tikhonov + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + Ivan Tikhonov, kefeer@brokestream.com + +*/ + +#include +#include +#include +#include +#include + + +typedef long long int num; + +num pid; +char tcomm[PATH_MAX]; +char state; + +num ppid; +num pgid; +num sid; +num tty_nr; +num tty_pgrp; + +num flags; +num min_flt; +num cmin_flt; +num maj_flt; +num cmaj_flt; +num utime; +num stimev; + +num cutime; +num cstime; +num priority; +num nicev; +num num_threads; +num it_real_value; + +unsigned long long start_time; + +num vsize; +num rss; +num rsslim; +num start_code; +num end_code; +num start_stack; +num esp; +num eip; + +num pending; +num blocked; +num sigign; +num sigcatch; +num wchan; +num zero1; +num zero2; +num exit_signal; +num cpu; +num rt_priority; +num policy; + +long tickspersec; + +FILE *input; + +void readone(num *x) { fscanf(input, "%lld ", x); } +void readunsigned(unsigned long long *x) { fscanf(input, "%llu ", x); } +void readstr(char *x) { fscanf(input, "%s ", x);} +void readchar(char *x) { fscanf(input, "%c ", x);} + +void printone(char *name, num x) { printf("%20s: %lld\n", name, x);} +void printonex(char *name, num x) { printf("%20s: %016llx\n", name, x);} +void printunsigned(char *name, unsigned long long x) { printf("%20s: %llu\n", name, x);} +void printchar(char *name, char x) { printf("%20s: %c\n", name, x);} +void printstr(char *name, char *x) { printf("%20s: %s\n", name, x);} +void printtime(char *name, num x) { printf("%20s: %f\n", name, (((double)x) / tickspersec));} + +int gettimesinceboot() { + FILE *procuptime; + int sec, ssec; + + procuptime = fopen("/proc/uptime", "r"); + fscanf(procuptime, "%d.%ds", &sec, &ssec); + fclose(procuptime); + return (sec*tickspersec)+ssec; +} + +void printtimediff(char *name, num x) { + int sinceboot = gettimesinceboot(); + int running = sinceboot - x; + time_t rt = time(NULL) - (running / tickspersec); + char buf[1024]; + + strftime(buf, sizeof(buf), "%m.%d %H:%M", localtime(&rt)); + printf("%20s: %s (%u.%us)\n", name, buf, running / tickspersec, running % tickspersec); +} + +int main(int argc, char *argv[]) { + tickspersec = sysconf(_SC_CLK_TCK); + input = NULL; + + if(argc > 1) { + chdir("/proc"); + if(chdir(argv[1]) == 0) { input = fopen("stat", "r"); } + if(!input) { + perror("open"); + return 1; + } + } else { + input = stdin; + } + + + readone(&pid); + readstr(tcomm); + readchar(&state); + readone(&ppid); + readone(&pgid); + readone(&sid); + readone(&tty_nr); + readone(&tty_pgrp); + readone(&flags); + readone(&min_flt); + readone(&cmin_flt); + readone(&maj_flt); + readone(&cmaj_flt); + readone(&utime); + readone(&stimev); + readone(&cutime); + readone(&cstime); + readone(&priority); + readone(&nicev); + readone(&num_threads); + readone(&it_real_value); + readunsigned(&start_time); + readone(&vsize); + readone(&rss); + readone(&rsslim); + readone(&start_code); + readone(&end_code); + readone(&start_stack); + readone(&esp); + readone(&eip); + readone(&pending); + readone(&blocked); + readone(&sigign); + readone(&sigcatch); + readone(&wchan); + readone(&zero1); + readone(&zero2); + readone(&exit_signal); + readone(&cpu); + readone(&rt_priority); + readone(&policy); + + { + + printone("pid", pid); + printstr("tcomm", tcomm); + printchar("state", state); + printone("ppid", ppid); + printone("pgid", pgid); + printone("sid", sid); + printone("tty_nr", tty_nr); + printone("tty_pgrp", tty_pgrp); + printone("flags", flags); + printone("min_flt", min_flt); + printone("cmin_flt", cmin_flt); + printone("maj_flt", maj_flt); + printone("cmaj_flt", cmaj_flt); + printtime("utime", utime); + printtime("stime", stimev); + printtime("cutime", cutime); + printtime("cstime", cstime); + printone("priority", priority); + printone("nice", nicev); + printone("num_threads", num_threads); + printtime("it_real_value", it_real_value); + printtimediff("start_time", start_time); + printone("vsize", vsize); + printone("rss", rss); + printone("rsslim", rsslim); + printone("start_code", start_code); + printone("end_code", end_code); + printone("start_stack", start_stack); + printone("esp", esp); + printone("eip", eip); + printonex("pending", pending); + printonex("blocked", blocked); + printonex("sigign", sigign); + printonex("sigcatch", sigcatch); + printone("wchan", wchan); + printone("zero1", zero1); + printone("zero2", zero2); + printonex("exit_signal", exit_signal); + printone("cpu", cpu); + printone("rt_priority", rt_priority); + printone("policy", policy); + } + + return 0; +} +