the-btfash-foundation/tmux-mem-cpu-load
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use sysinfo() to get ram stats instead of parsing meminfo file.

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Idea pulled from seculabird gihub user.
see:
880f8b1967
This commit is contained in:
Pawel "l0ner" Soltys 2015-01-09 14:52:50 +01:00
parent b02d0000e9
commit e7f2dd25e8
1 changed files with 8 additions and 36 deletions
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42
linux/memory.cc
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@ -1,6 +1,5 @@
#include <string>
#include <sstream>
#include <fstream>
#include <sys/sysinfo.h>
#include "memory.h"
#include "../luts.h"
@ -8,40 +7,13 @@
std::string mem_string( bool use_colors = false ) {
std::ostringstream oss;
unsigned int total_mem;
unsigned int used_mem;
unsigned int unused_mem;
struct sysinfo sinfo;
sysinfo(&sinfo);
size_t substrStart;
size_t substrLen;
std::ifstream meminfo_file( "/proc/meminfo" );
std::string mem_line;
getline( meminfo_file, mem_line );
substrStart = mem_line.find_first_of( ':' ) + 1;
substrLen = mem_line.find_first_of( 'k' );
total_mem = stoi(mem_line.substr(substrStart, substrLen));
used_mem = total_mem;
for( unsigned int i = 0; i < 3; i++ ) {
getline( meminfo_file, mem_line );
// accomodate MemAvailable potentially being in lines 2-4 of
// /proc/meminfo. do this in a way to not break the original logic of the
// loop
if( mem_line.find("MemAvailable") == 0 )
i--;
else {
substrStart = mem_line.find_first_of( ':' ) + 1;
substrLen = mem_line.find_first_of( 'k' );
unused_mem = stoi(mem_line.substr(substrStart, substrLen));
used_mem -= unused_mem;
}
}
meminfo_file.close();
unsigned int total_mem = sinfo.totalram / 1014;
unsigned int used_mem = total_mem - sinfo.freeram / 1024;
// we don't need this for now
//unsigned int unused_mem = sinfo.freeram / 1024;
if( use_colors ) {
oss << mem_lut[(100 * used_mem) / total_mem];