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/*
Copyright (C) 2008- The University of Notre Dame
This software is distributed under the GNU General Public License.
See the file COPYING for details.
*/
#include "host_memory_info.h"
#if defined(CCTOOLS_OPSYS_LINUX)
#include <unistd.h>
int host_memory_info_get(UINT64_T * avail, UINT64_T * total)
{
*total = getpagesize() * (UINT64_T) sysconf(_SC_PHYS_PAGES);
*avail = getpagesize() * (UINT64_T) sysconf(_SC_AVPHYS_PAGES);
return 1;
}
#elif defined(CCTOOLS_OPSYS_DARWIN)
#include <sys/types.h>
#include <sys/sysctl.h>
int host_memory_info_get(UINT64_T * avail, UINT64_T * total)
{
unsigned x = 0;
size_t s = sizeof(x);
sysctlbyname("hw.physmem", &x, &s, 0, 0);
*avail = *total = x;
return 1;
}
#else
int host_memory_info_get(UINT64_T * avail, UINT64_T * total)
{
*total = 0;
*avail = 0;
return 1;
}
#endif
#include <sys/resource.h>
#include <stdio.h>
#include <unistd.h>
int host_memory_usage_get(UINT64_T * rssp, UINT64_T * totalp)
{
#ifdef CCTOOLS_OPSYS_LINUX
/*
Linux has getrusage, but it doesn't remote memory status,
so we must load it from the proc filesystem instead.
*/
unsigned long total, rss, shared, text, libs, data, dirty;
FILE *file = fopen("/proc/self/statm", "r");
if(!file)
return 0;
fscanf(file, "%lu %lu %lu %lu %lu %lu %lu", &total, &rss, &shared, &text, &libs, &data, &dirty);
fclose(file);
*rssp = (UINT64_T) rss *getpagesize();
*totalp = (UINT64_T) total *getpagesize();
return 1;
#else
struct rusage ru;
int result = getrusage(RUSAGE_SELF, &ru);
if(result >= 0) {
*rssp = (UINT64_T) ru.ru_ixrss * getpagesize();
*totalp = (UINT64_T) ru.ru_ixrss * getpagesize();
return 1;
} else {
return 0;
}
#endif
}
/* vim: set noexpandtab tabstop=4: */
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