the-btfash-foundation/tmux-mem-cpu-load
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No using namespace std.

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Bad form, as Hook would say.
This commit is contained in:
Matt McCormick 2013-04-24 22:13:50 -04:00
parent e1754b0d60
commit 816a26bab5
1 changed files with 20 additions and 21 deletions
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41
tmux-mem-cpu-load.cpp
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@ -19,13 +19,12 @@
#include <iostream> #include <iostream>
#include <sstream> #include <sstream>
#include <string> #include <string>
using namespace std;
#include <unistd.h> // sleep #include <unistd.h> // sleep
float cpu_percentage( unsigned int cpu_usage_delay ) float cpu_percentage( unsigned int cpu_usage_delay )
{ {
string stat_line; std::string stat_line;
size_t line_start_pos; size_t line_start_pos;
size_t line_end_pos; size_t line_end_pos;
unsigned long long current_user; unsigned long long current_user;
@ -40,9 +39,9 @@ float cpu_percentage( unsigned int cpu_usage_delay )
unsigned long long diff_system; unsigned long long diff_system;
unsigned long long diff_nice; unsigned long long diff_nice;
unsigned long long diff_idle; unsigned long long diff_idle;
istringstream iss; std::istringstream iss;
ifstream stat_file("/proc/stat"); std::ifstream stat_file("/proc/stat");
getline(stat_file, stat_line); getline(stat_file, stat_line);
stat_file.close(); stat_file.close();
@ -82,16 +81,16 @@ float cpu_percentage( unsigned int cpu_usage_delay )
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( unsigned int cpu_usage_delay, unsigned int graph_lines ) std::string cpu_string( unsigned int cpu_usage_delay, unsigned int graph_lines )
{ {
string meter( graph_lines + 2, ' ' ); std::string meter( graph_lines + 2, ' ' );
meter[0] = '['; meter[0] = '[';
meter[meter.length() - 1] = ']'; meter[meter.length() - 1] = ']';
int meter_count = 0; int meter_count = 0;
float percentage; float percentage;
ostringstream oss; std::ostringstream oss;
oss.precision( 1 ); oss.precision( 1 );
oss.setf( ios::fixed | ios::right ); oss.setf( std::ios::fixed | std::ios::right );
percentage = cpu_percentage( cpu_usage_delay ); percentage = cpu_percentage( cpu_usage_delay );
float meter_step = 99.9 / graph_lines; float meter_step = 99.9 / graph_lines;
@ -110,18 +109,18 @@ string cpu_string( unsigned int cpu_usage_delay, unsigned int graph_lines )
return oss.str(); return oss.str();
} }
string mem_string() std::string mem_string()
{ {
unsigned int total_mem; unsigned int total_mem;
unsigned int used_mem; unsigned int used_mem;
unsigned int unused_mem; unsigned int unused_mem;
size_t line_start_pos; size_t line_start_pos;
size_t line_end_pos; size_t line_end_pos;
istringstream iss; std::istringstream iss;
ostringstream oss; std::ostringstream oss;
string mem_line; std::string mem_line;
ifstream meminfo_file( "/proc/meminfo" ); std::ifstream meminfo_file( "/proc/meminfo" );
getline( meminfo_file, mem_line ); getline( meminfo_file, mem_line );
line_start_pos = mem_line.find_first_of( ':' ); line_start_pos = mem_line.find_first_of( ':' );
line_start_pos++; line_start_pos++;
@ -148,11 +147,11 @@ string mem_string()
return oss.str(); return oss.str();
} }
string load_string() std::string load_string()
{ {
ifstream loadavg_file( "/proc/loadavg" ); std::ifstream loadavg_file( "/proc/loadavg" );
string load_line; std::string load_line;
getline( loadavg_file, load_line ); std::getline( loadavg_file, load_line );
loadavg_file.close(); loadavg_file.close();
return load_line.substr( 0, 14 ); return load_line.substr( 0, 14 );
@ -165,8 +164,8 @@ int main(int argc, char** argv)
bool use_colors = false; bool use_colors = false;
try try
{ {
istringstream iss; std::istringstream iss;
iss.exceptions ( ifstream::failbit | ifstream::badbit ); iss.exceptions ( std::ifstream::failbit | std::ifstream::badbit );
std::string current_arg; std::string current_arg;
unsigned int arg_index = 1; unsigned int arg_index = 1;
if( argc > arg_index ) if( argc > arg_index )
@ -192,9 +191,9 @@ int main(int argc, char** argv)
iss >> graph_lines; iss >> graph_lines;
} }
} }
catch(const exception &e) catch(const std::exception &e)
{ {
cerr << "Usage: " << argv[0] << " [--colors] [tmux_status-interval(seconds)] [graph lines]" << endl; std::cerr << "Usage: " << argv[0] << " [--colors] [tmux_status-interval(seconds)] [graph lines]" << std::endl;
return 1; return 1;
} }