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Viktor Barzin 2025-11-22 22:39:36 +00:00
parent 090766cab0
commit a33f99e765
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dot_tmux/plugins/tmux-mem-cpu-load/osx/cpu.cc Normal file
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/*
* Copyright 2012 Matthew McCormick
* Copyright 2013 Justin Crawford <Justasic@gmail.com>
* Copyright 2015 Pawel 'l0ner' Soltys
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <mach/mach.h>
#include <unistd.h> // usleep()
#include "cpu.h"
uint32_t get_cpu_count()
{
return sysconf( _SC_NPROCESSORS_ONLN );
}
// OSX or BSD based system, use BSD APIs instead
// See: http://www.opensource.apple.com/source/xnu/xnu-201/osfmk/mach/host_info.h
// and: http://web.mit.edu/darwin/src/modules/xnu/osfmk/man/
host_cpu_load_info_data_t _get_cpu_percentage()
{
kern_return_t error;
mach_msg_type_number_t count;
host_cpu_load_info_data_t r_load;
mach_port_t mach_port;
count = HOST_CPU_LOAD_INFO_COUNT;
mach_port = mach_host_self();
error = host_statistics(mach_port, HOST_CPU_LOAD_INFO,
( host_info_t )&r_load, &count );
if ( error != KERN_SUCCESS )
{
return host_cpu_load_info_data_t();
}
return r_load;
}
float cpu_percentage( unsigned int cpu_usage_delay )
{
// Get the load times from the XNU kernel
host_cpu_load_info_data_t load1 = _get_cpu_percentage();
usleep( cpu_usage_delay );
host_cpu_load_info_data_t load2 = _get_cpu_percentage();
// Current load times
unsigned long long current_user = load1.cpu_ticks[CP_USER];
unsigned long long current_system = load1.cpu_ticks[CP_SYS];
unsigned long long current_nice = load1.cpu_ticks[CP_NICE];
unsigned long long current_idle = load1.cpu_ticks[CP_IDLE];
// Next load times
unsigned long long next_user = load2.cpu_ticks[CP_USER];
unsigned long long next_system = load2.cpu_ticks[CP_SYS];
unsigned long long next_nice = load2.cpu_ticks[CP_NICE];
unsigned long long next_idle = load2.cpu_ticks[CP_IDLE];
// Difference between the two
unsigned long long diff_user = next_user - current_user;
unsigned long long diff_system = next_system - current_system;
unsigned long long diff_nice = next_nice - current_nice;
unsigned long long diff_idle = next_idle - current_idle;
return static_cast<float>( diff_user + diff_system + diff_nice ) /
static_cast<float>( diff_user + diff_system + diff_nice + diff_idle ) *
100.0;
}