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// SPDX-License-Identifier: GPL-3.0-or-later
#include "apps_plugin.h"
kernel_uint_t MemTotal = 0;
#ifdef __FreeBSD__
static inline bool get_MemTotal_per_os(void) {
int mib[2] = {CTL_HW, HW_PHYSMEM};
size_t size = sizeof(MemTotal);
if (sysctl(mib, 2, &MemTotal, &size, NULL, 0) == -1) {
netdata_log_error("Failed to get total memory using sysctl");
return false;
}
// FreeBSD returns bytes; convert to kB
MemTotal /= 1024;
return true;
}
#endif // __FreeBSD__
#ifdef __APPLE__
static inline bool get_MemTotal_per_os(void) {
int mib[2] = {CTL_HW, HW_MEMSIZE};
size_t size = sizeof(MemTotal);
if (sysctl(mib, 2, &MemTotal, &size, NULL, 0) == -1) {
netdata_log_error("Failed to get total memory using sysctl");
return false;
}
// MacOS returns bytes; convert to kB
MemTotal /= 1024;
return true;
}
#endif // __APPLE__
#if !defined(__FreeBSD__) && !defined(__APPLE__)
static inline bool get_MemTotal_per_os(void) {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/proc/meminfo", netdata_configured_host_prefix);
procfile *ff = procfile_open(filename, ": \t", PROCFILE_FLAG_DEFAULT);
if(!ff)
return false;
ff = procfile_readall(ff);
if(!ff)
return false;
size_t line, lines = procfile_lines(ff);
for(line = 0; line < lines ;line++) {
size_t words = procfile_linewords(ff, line);
if(words == 3 && strcmp(procfile_lineword(ff, line, 0), "MemTotal") == 0 && strcmp(procfile_lineword(ff, line, 2), "kB") == 0) {
kernel_uint_t n = str2ull(procfile_lineword(ff, line, 1), NULL);
if(n) MemTotal = n;
break;
}
}
procfile_close(ff);
return true;
}
#endif
void get_MemTotal(void) {
if(!get_MemTotal_per_os())
MemTotal = 0;
}
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