From f2e265b6bf56bd7c7c2337b03d5b150f76107aa9 Mon Sep 17 00:00:00 2001
From: Maxime Graulich <maxime.graulich@gmail.com>
Date: Mon, 13 Jan 2014 13:19:37 +0000
Subject: [PATCH] add TotalRam() to get amount of physical memory, in Megabytes
---
Common/OS.cpp | 30 ++++++++++++++++++++++++++++++
Common/OS.h | 1 +
2 files changed, 31 insertions(+)
diff --git a/Common/OS.cpp b/Common/OS.cpp
index 2f2e4b9bae..210c294e24 100644
--- a/Common/OS.cpp
+++ b/Common/OS.cpp
@@ -17,6 +17,14 @@
#include "GmshConfig.h"
#include "StringUtils.h"
+#if defined(__APPLE__)
+#include <sys/sysctl.h>
+#endif
+
+#if defined(__linux__)
+#include <sys/sysinfo.h>
+#endif
+
#if !defined(WIN32) || defined(__CYGWIN__)
#include <unistd.h>
#include <sys/time.h>
@@ -262,6 +270,28 @@ double Cpu()
return s;
}
+double TotalRam()
+{
+ double ram = 0;
+#if defined(__APPLE__)
+ int name[] = {CTL_HW, HW_MEMSIZE};
+ int64_t value;
+ size_t len = sizeof(value);
+ if(sysctl(name, 2, &value, &len, NULL, 0) != -1)
+ ram = value / (1024 * 1024);
+#elif defined (WIN32)
+ MEMORYSTATUSEX status;
+ status.dwLength = sizeof(status);
+ GlobalMemoryStatusEx(&status);
+ ram = status.ullTotalPhys / ((double)1024 * 1024);
+#elif defined(__linux__)
+ struct sysinfo infos;
+ if(sysinfo(&infos) != -1)
+ ram = infos.totalram * (unsigned long)infos.mem_unit / ((double)1024 * 1024);
+#endif
+ return ram;
+}
+
long GetMemoryUsage()
{
long mem = 0;
diff --git a/Common/OS.h b/Common/OS.h
index ae1e120399..1a0cbb95f6 100644
--- a/Common/OS.h
+++ b/Common/OS.h
@@ -15,6 +15,7 @@ double GetTimeInSeconds();
void SleepInSeconds(double s);
void CheckResources();
double Cpu();
+double TotalRam();
long GetMemoryUsage();
int GetProcessId();
std::string GetHostName();
--
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