240752d800
Since the headers for cpu, memory and load functions are virtually the same for all platforms, I've decided to move them into common/ dir and do some refacotring: * removed per-platform header files * implemented get_cpu_count() function across all platforms. We are using it cpu on every platform, yet not on every one this was implemented as a separate function. * removed platform detection through preprocessor from main: we don't need this there anymore, since the headers are common for all platforms. CMake will handle setting of correct source files for us now. * Unified used defines for CPU states across all platforms and made linux use them. Added some platform detection to cpu.h in order to set them correctly across the platforms. * moved getsysctl.h to common/ dir, since it's used on Net and Free BSD, and thus become a common include.
66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
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*
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* Copyright 2012 Matthew McCormick
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* Copyright 2013 Justin Crawford <Justasic@gmail.com>
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* Copyright 2015 Pawel 'l0ner' Soltys
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// Based on: github.com/freebsd/freebsd/blob/master/usr.bin/top/machine.c
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// Based on: Apple.cpp for load_string/mem_string and apple's documentation
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#include <sys/types.h>
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#include <unistd.h> // usleep
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#include "getsysctl.h"
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#include "cpu.h"
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uint8_t get_cpu_cout()
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{
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int32_t cpu_count = 0;
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GETSYSCTL( "hw.ncpu", cpu_count );
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return static_cast<uint8_t>( cpu_count );
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}
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float cpu_percentage( unsigned int cpu_usage_delay )
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{
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u_long load1[CP_STATES];
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u_long load2[CP_STATES];
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GETSYSCTL( "kern.cp_time", load1 );
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usleep( cpu_usage_delay );
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GETSYSCTL( "kern.cp_time", load2 );
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// Current load times
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unsigned long long current_user = load1[CP_USER];
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unsigned long long current_system = load1[CP_SYS];
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unsigned long long current_nice = load1[CP_NICE];
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unsigned long long current_idle = load1[CP_IDLE];
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// Next load times
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unsigned long long next_user = load2[CP_USER];
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unsigned long long next_system = load2[CP_SYS];
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unsigned long long next_nice = load2[CP_NICE];
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unsigned long long next_idle = load2[CP_IDLE];
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// Difference between the two
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unsigned long long diff_user = next_user - current_user;
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unsigned long long diff_system = next_system - current_system;
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unsigned long long diff_nice = next_nice - current_nice;
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unsigned long long diff_idle = next_idle - current_idle;
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return static_cast<float>( diff_user + diff_system + diff_nice ) /
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static_cast<float>( diff_user + diff_system + diff_nice + diff_idle ) *
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100.0;
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}
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