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/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS. All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#define QPE_HAVE_MEMALERTER
#define QPE_MEMALERTER_IMPL \
static void sig_handler(int sig) \
{ \
switch (sig) { \
case SIGHUP: \
memstate = VeryLow; \
break; \
case SIGUSR1: \
memstate = Normal; \
break; \
case SIGUSR2: \
memstate = Low; \
break; \
} \
} \
static void initMemalerter() \
{ \
struct sigaction sa; \
memset(&sa, '\0', sizeof sa); \
sa.sa_handler = sig_handler; \
sa.sa_flags = SA_RESTART; \
if (sigaction(SIGHUP, &sa, NULL) < 0) { \
return; \
} \
if (sigaction(SIGUSR1, &sa, NULL) < 0) { \
return; \
} \
if (sigaction(SIGUSR2, &sa, NULL) < 0) { \
return; \
} \
FILE *fo = fopen("/proc/sys/vm/freepg_signal_proc", "w"); \
\
if (!fo) \
return; \
fprintf(fo, "qpe\n"); \
fclose(fo); \
}
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