From b473200c71704cc30eec17ec8d206fe8a96633b0 Mon Sep 17 00:00:00 2001
From: Veronique Legrand <vlegrand@pasteur.fr>
Date: Mon, 10 May 2021 11:43:17 +0200
Subject: [PATCH] now use sysinfo to determine amount of memory available on
the machine
---
src/low_level_utils.cpp | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/low_level_utils.cpp b/src/low_level_utils.cpp
index 7acd6a5..18895fc 100644
--- a/src/low_level_utils.cpp
+++ b/src/low_level_utils.cpp
@@ -9,6 +9,7 @@
#include <iostream>
#include <sys/stat.h>
#include <sys/sysctl.h>
+#include <sys/sysinfo.h>
#include "low_level_utils.h"
using namespace std;
@@ -52,7 +53,16 @@ unsigned long getNodePhysMemory() {
}
mem /= 1 * 1024 * 1024 * 1024;
#else
- cout<<"ROCK has not been tested on this operating system, please contact author."<<endl;
+ struct sysinfo si;
+ int ret=sysinfo(&si);
+ if (ret==-1) {
+ cout<<"Couldn't determine how much RAM is usable on your system."<<errno<<endl;
+ mem=0;
+ }
+ mem=si.totalram;
+ mem /= 1 * 1024 * 1024 * 1024;
+ cout<<"total RAM="<<mem<<endl;
+//cout<<"ROCK has not been tested on this operating system, please contact author."<<endl;
#endif
return (unsigned long)mem;
--
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