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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* 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 the copyright holders 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.
*
* Authors: Nathan Binkert
*/
#include <unistd.h>
#ifdef __APPLE__
#include <mach/mach_init.h>
#include <mach/shared_region.h>
#include <mach/task.h>
#endif
#include <cctype>
#include <cerrno>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include "base/hostinfo.hh"
#include "base/misc.hh"
#include "base/str.hh"
#include "base/types.hh"
using namespace std;
string
__get_hostname()
{
char host[256];
if (gethostname(host, sizeof host) == -1)
warn("could not get host name!");
return host;
}
string &
hostname()
{
static string hostname = __get_hostname();
return hostname;
}
uint64_t
procInfo(const char *filename, const char *target)
{
int done = 0;
char line[80];
char format[80];
long usage;
FILE *fp = fopen(filename, "r");
while (fp && !feof(fp) && !done) {
if (fgets(line, 80, fp)) {
if (startswith(line, target)) {
snprintf(format, sizeof(format), "%s %%ld", target);
sscanf(line, format, &usage);
fclose(fp);
return usage ;
}
}
}
if (fp)
fclose(fp);
return 0;
}
uint64_t
memUsage()
{
// For the Mach-based Darwin kernel, use the task_info of the self task
#ifdef __APPLE__
struct task_basic_info t_info;
mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
if (KERN_SUCCESS != task_info(mach_task_self(),
TASK_BASIC_INFO, (task_info_t)&t_info,
&t_info_count)) {
return 0;
}
// Mimic Darwin's implementation of top and subtract
// SHARED_REGION_SIZE from the tasks virtual size to account for the
// shared memory submap that is incorporated into every process.
return (t_info.virtual_size - SHARED_REGION_SIZE) / 1024;
#else
// Linux implementation
return procInfo("/proc/self/status", "VmSize:");
#endif
}
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