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/*
* Berkeley Lab Checkpoint/Restart (BLCR) for Linux is Copyright (c)
* 2007, The Regents of the University of California, through Lawrence
* Berkeley National Laboratory (subject to receipt of any required
* approvals from the U.S. Dept. of Energy). All rights reserved.
*
* Portions may be copyrighted by others, as may be noted in specific
* copyright notices within specific files.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: cr_timers.c,v 1.7 2008/08/18 23:16:17 phargrov Exp $
*/
#include "cr_module.h"
#include <asm/uaccess.h>
void cr_pause_itimers(struct itimerval *itimers) {
static struct itimerval cr_zero_itimer = {
it_interval: { tv_sec: 0, tv_usec: 0},
it_value: { tv_sec: 0, tv_usec: 0},
};
mm_segment_t oldfs = get_fs();
set_fs(KERNEL_DS);
(void)sys_setitimer(ITIMER_REAL, &cr_zero_itimer, itimers+0);
(void)sys_setitimer(ITIMER_VIRTUAL, &cr_zero_itimer, itimers+1);
(void)sys_setitimer(ITIMER_PROF, &cr_zero_itimer, itimers+2);
set_fs(oldfs);
}
void cr_resume_itimers(struct itimerval *itimers) {
mm_segment_t oldfs = get_fs();
set_fs(KERNEL_DS);
(void)sys_setitimer(ITIMER_REAL, itimers+0, NULL);
(void)sys_setitimer(ITIMER_VIRTUAL, itimers+1, NULL);
(void)sys_setitimer(ITIMER_PROF, itimers+2, NULL);
set_fs(oldfs);
}
long cr_load_itimers(cr_rstrt_proc_req_t *proc_req) {
cr_errbuf_t *eb = proc_req->req->errbuf;
long retval = cr_kread(eb, proc_req->file, &proc_req->itimers, sizeof(proc_req->itimers));
if (retval != sizeof(proc_req->itimers)) {
CR_ERR_PROC_REQ(proc_req, "itimers: read returned %ld", retval);
}
return retval;
}
long cr_save_itimers(cr_chkpt_proc_req_t *proc_req) {
cr_errbuf_t *eb = proc_req->req->errbuf;
long retval = cr_kwrite(eb, proc_req->file, &proc_req->itimers, sizeof(proc_req->itimers));
if (retval != sizeof(proc_req->itimers)) {
CR_ERR_PROC_REQ(proc_req, "itimers: write returned %ld", retval);
}
return retval;
}
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