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/*
* memstat.c
*
* Get VMsize in KBytes
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2024 OpenLink Software
*
* This project 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; only version 2 of the License, dated June 1991.
*
* 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.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef _MSC_VER
typedef __int64 int64_t;
#else
#include <stdint.h>
#endif
#ifdef linux
#include <stdio.h>
#include <unistd.h>
#include <sys/sysinfo.h>
#endif
#ifdef __APPLE__
#include <mach/task.h>
#include <mach/mach_init.h>
#endif
#ifdef WIN32
#include <windows.h>
#include <psapi.h>
#else
#include <sys/resource.h>
#endif
/* return VmSize in KBytes, for macOS uses footprint which represents memory usage of the process */
int64_t
get_proc_vm_size ()
{
int64_t proc_size = 0;
#if defined (linux)
static long page_size;
FILE *file = fopen("/proc/self/statm", "r"); /* only reliable way to get proper number as in ps/top etc. */
if (!page_size) page_size = sysconf(_SC_PAGESIZE);
if (file)
{
fscanf (file, "%llu", &proc_size);
fclose (file);
proc_size *= page_size;
}
#elif defined (__APPLE__)
struct task_vm_info info;
kern_return_t rc;
mach_msg_type_number_t info_count = TASK_VM_INFO_COUNT;
rc = task_info(mach_task_self(), TASK_VM_INFO, (task_info_t)&info, &info_count);
if (KERN_SUCCESS == rc)
proc_size = info.phys_footprint; /* the footprint is a what is reported as process usage, virtual_size is not vmsize */
#elif defined (WIN32)
PROCESS_MEMORY_COUNTERS count;
if (GetProcessMemoryInfo (GetCurrentProcess(), &count, sizeof (count)))
proc_size = count.PagefileUsage;
#else
/* not implemented */
#endif
return proc_size / 1024;
}
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