9248d72018
1998-08-12 Martin Baulig <martin@home-of-linux.org> * include/glibtop/procsegment.h (glibtop_proc_segment): Using `text_rss', `shlib_rss', `data_rss' and `dirty_size' instead of `tsr', `lrs', `drs' and `dt'. New field `stack_rss'. * sysdeps/linux/procmem.c: Memory sizes now correctly in bytes. * sysdeps/linux/procsegment.c: Dito. * sysdeps/kernel/procsegment.c: Stack pages are reported via `stack_rss' and no longer count towards `data_rss' * kernel/table.h (table_proc_segment): Added `srs' field. * kernel/table21/module.c (TBL_PROC_SEGMENT): Added kernel support for this. * sysdeps/{linux, kernel, stub}/procmap.c: New files.
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/procmem.h>
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static const unsigned long _glibtop_sysdeps_proc_mem =
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(1 << GLIBTOP_PROC_MEM_SIZE) + (1 << GLIBTOP_PROC_MEM_VSIZE) +
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(1 << GLIBTOP_PROC_MEM_RESIDENT) + (1 << GLIBTOP_PROC_MEM_SHARE) +
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(1 << GLIBTOP_PROC_MEM_RSS) + (1 << GLIBTOP_PROC_MEM_RSS_RLIM);
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#ifndef LOG1024
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#define LOG1024 10
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#endif
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/* these are for getting the memory statistics */
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static int pageshift; /* log base 2 of the pagesize */
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/* define pagetok in terms of pageshift */
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#define pagetok(size) ((size) << pageshift)
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/* Init function. */
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void
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glibtop_init_proc_mem_s (glibtop *server)
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{
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register int pagesize;
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server->sysdeps.proc_mem = _glibtop_sysdeps_proc_mem;
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/* get the page size with "getpagesize" and calculate pageshift
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* from it */
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pagesize = getpagesize ();
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pageshift = 0;
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while (pagesize > 1) {
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pageshift++;
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pagesize >>= 1;
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}
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}
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/* Provides detailed information about a process. */
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void
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glibtop_get_proc_mem_s (glibtop *server, glibtop_proc_mem *buf, pid_t pid)
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{
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char input [BUFSIZ], *tmp;
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int nread;
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FILE *f;
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glibtop_init_s (&server, GLIBTOP_SYSDEPS_MEM, 0);
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memset (buf, 0, sizeof (glibtop_proc_mem));
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sprintf (input, "/proc/%d/stat", pid);
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f = fopen (input, "r");
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if (!f) return;
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nread = fread (input, 1, BUFSIZ, f);
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if (nread < 0) {
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fclose (f);
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return;
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}
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input [nread] = 0;
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/* This is from guile-utils/gtop/proc/readproc.c */
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/* split into "PID (cmd" and "<rest>" */
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tmp = strrchr (input, ')');
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*tmp = '\0'; /* replace trailing ')' with NUL */
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/* parse these two strings separately, skipping the leading "(". */
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sscanf(tmp + 2, /* skip space after ')' too */
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"%*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u "
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"%*d %*d %*d %*d %*d %*d %*u %*u %*d %Lu "
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"%Lu %Lu", &buf->vsize, &buf->rss, &buf->rss_rlim);
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fclose (f);
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sprintf (input, "/proc/%d/statm", pid);
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f = fopen (input, "r");
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if (!f) return;
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nread = fread (input, 1, BUFSIZ, f);
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if (nread < 0) {
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fclose (f);
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return;
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}
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input [nread] = 0;
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sscanf (input, "%Lu %Lu %Lu",
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&buf->size, &buf->resident, &buf->share);
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buf->size <<= pageshift;
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buf->resident <<= pageshift;
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buf->share <<= pageshift;
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buf->rss <<= pageshift;
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fclose (f);
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buf->flags = _glibtop_sysdeps_proc_mem;
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}
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