103 lines
2.8 KiB
C
103 lines
2.8 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_VSIZE) + (1 << GLIBTOP_PROC_MEM_RSS) +
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(1 << GLIBTOP_PROC_MEM_RSS_RLIM);
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static const unsigned long _glibtop_sysdeps_proc_mem_statm =
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(1 << GLIBTOP_PROC_MEM_SIZE) + (1 << GLIBTOP_PROC_MEM_RESIDENT) +
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(1 << GLIBTOP_PROC_MEM_SHARE);
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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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_glibtop_sysdeps_proc_mem_statm;
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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 buffer [BUFSIZ], *p;
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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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if (proc_stat_to_buffer (buffer, pid))
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return;
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p = proc_stat_after_cmd (buffer);
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if (!p) return;
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p = skip_multiple_token (p, 20);
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buf->vsize = strtoul (p, &p, 0);
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buf->rss = strtoul (p, &p, 0);
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buf->rss_rlim = strtoul (p, &p, 0);
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buf->flags = _glibtop_sysdeps_proc_mem;
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if (proc_statm_to_buffer (buffer, pid))
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return;
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buf->size = strtoul (buffer, &p, 0);
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buf->resident = strtoul (p, &p, 0);
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buf->share = strtoul (p, &p, 0);
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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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buf->flags |= _glibtop_sysdeps_proc_mem_statm;
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}
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