/*
 * Copyright (c) 2015, Intel Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of Intel Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"

#include "limit.h"

#include <cstdlib>

#if defined(HAVE_SETRLIMIT)
#include <cerrno>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <sys/resource.h>

void setMemoryLimit(size_t mbytes) {
    size_t bytes = mbytes * 1024 * 1024;

    struct rlimit r;
    r.rlim_cur = bytes;
    r.rlim_max = bytes;

    int rv = setrlimit(RLIMIT_DATA, &r);
    if (rv != 0) {
        std::cerr << "setrlimit(RLIMIT_DATA, ...) failed: " <<
                     strerror(errno) << std::endl;
    }

    rv = setrlimit(RLIMIT_AS, &r);
    if (rv != 0) {
        std::cerr << "setrlimit(RLIMIT_AS, ...) failed: " <<
                     strerror(errno) << std::endl;
    }
}
#else // no setrlimit
void setMemoryLimit(size_t) {}
#endif