the-btfash-foundation/tmux-mem-cpu-load
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Make cpu usage timing interval user option.

Browse Source 
Also convert sleep to microseconds so the delay time can always be less than the
tmux status bar update interval.
This commit is contained in:
Matt McCormick (thewtex) 2010-02-25 08:54:18 -06:00
parent 00a85129fa
commit dbd3f8e3c7
1 changed files with 23 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
tmux-mem-cpu-load.cpp
View File

@ -7,7 +7,7 @@ using namespace std;
#include <unistd.h> // sleep #include <unistd.h> // sleep
float cpu_percentage() float cpu_percentage( unsigned int cpu_usage_delay )
{ {
string stat_line; string stat_line;
size_t line_start_pos; size_t line_start_pos;
@ -41,7 +41,7 @@ float cpu_percentage()
iss >> current_user >> current_nice >> current_system >> current_idle; iss >> current_user >> current_nice >> current_system >> current_idle;
iss.clear(); iss.clear();
sleep(1); usleep( cpu_usage_delay );
stat_file.open("/proc/stat"); stat_file.open("/proc/stat");
getline(stat_file, stat_line); getline(stat_file, stat_line);
@ -66,7 +66,7 @@ float cpu_percentage()
return static_cast<float>(diff_user + diff_system + diff_nice)/static_cast<float>(diff_user + diff_system + diff_nice + diff_idle)*100.0; return static_cast<float>(diff_user + diff_system + diff_nice)/static_cast<float>(diff_user + diff_system + diff_nice + diff_idle)*100.0;
} }
string cpu_string() string cpu_string( unsigned int cpu_usage_delay )
{ {
string meter = "[ ]"; string meter = "[ ]";
int meter_count = 0; int meter_count = 0;
@ -75,7 +75,7 @@ string cpu_string()
oss.precision( 1 ); oss.precision( 1 );
oss.setf( ios::fixed | ios::right ); oss.setf( ios::fixed | ios::right );
percentage = cpu_percentage(); percentage = cpu_percentage( cpu_usage_delay );
meter_count = 1; meter_count = 1;
while(meter_count*9.99 < percentage) while(meter_count*9.99 < percentage)
{ {
@ -141,15 +141,25 @@ string load_string()
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
unsigned int cpu_usage_delay = 900000;
if( argc > 1 )
{
try try
{ {
std::cout << mem_string() << ' ' << cpu_string() << ' ' << load_string(); istringstream iss( argv[1] );
iss.exceptions ( ifstream::failbit | ifstream::badbit );
unsigned int status_interval;
iss >> status_interval;
cpu_usage_delay = status_interval * 1000000 - 100000;
} }
catch(const exception &e) catch(const exception &e)
{ {
cerr << "Error: " << e.what() << endl; cerr << "Usage: " << argv[0] << " [tmux_status-interval(seconds)]" << endl;
return 1; return 1;
} }
}
std::cout << mem_string() << ' ' << cpu_string( cpu_usage_delay ) << ' ' << load_string();
return 0; return 0;
} }