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Openbsd port. Should work.

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This commit is contained in:
Pawel "l0ner" Soltys 2015-01-19 23:41:51 +01:00
parent e459d40228
commit 3fd4a21d27
7 changed files with 341 additions and 0 deletions
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43
openbsd/common.h Normal file
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/*
* Copyright 2012 Matthew McCormick
*
* 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.
* */
// This file was Authored by Justin Crawford <Justasic@gmail.com>
// Based on: github.com/freebsd/freebsd/blob/master/usr.bin/top/machine.c
// Based on: Apple.cpp for load_string/mem_string and apple's documentation
#ifndef BSD_METER_COMMON_H_
#define BSD_METER_COMMON_H_
#include <iostream>
// Memory Sizes
#define KILOBYTES(x) ((x)/1024)
#define MEGABYTES(x) (KILOBYTES((x))/1024)
#define GIGABYTES(x) (MEGABYTES((x))/1024)
// CPU percentages stuff
#define CP_USER 0
#define CP_NICE 1
#define CP_SYS 2
#define CP_INTR 3
#define CP_IDLE 4
#define CPUSTATES 5
inline void error(const char * error) {
std::cerr << error << std::endl;
exit(23);
}
#endif

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openbsd/cpu.cc Normal file
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/*
* Copyright 2012 Matthew McCormick
*
* 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.
* */
// This file was Authored by Justin Crawford <Justasic@gmail.com>
// Based on: github.com/freebsd/freebsd/blob/master/usr.bin/top/machine.c
// Based on: Apple.cpp for load_string/mem_string and apple's documentation
#include <sys/types.h>
#include <unistd.h> // usleep
#include <sys/sysctl.h>
#include <sys/types.h>
#include "common.h"
#include "cpu.h"
uint8_t get_cpu_count()
{
int cpu_count = 1; // default to 1
int mib[2] = { CTL_HW, HW_NCPU };
size_t len = sizeof( cpu_count );
if(sysctl(mib, 2, &cpu_count, &len, NULL, 0) < 0)
{
error("sysctl: error getting cpu count");
}
return cpu_count;
}
float cpu_percentage( unsigned int cpu_usage_delay )
{
int cpu_ctl[] = { CTL_KERN, KERN_CPTIME };
int32_t load1[CPUSTATES];
int32_t load2[CPUSTATES];
size_t size = sizeof( load1 );
// get cpu times
if(sysctl(cpu_ctl, 2, &load1, &size, NULL, 0) < 0)
{
error("sysctl: error getting cpu stats");
}
usleep(cpu_usage_delay);
// update cpu times
if(sysctl(cpu_ctl, 2, &load2, &size, NULL, 0) < 0)
{
error("sysctl: error getting cpu stats");
}
// Current load times
unsigned long long current_user = load1[CP_USER];
unsigned long long current_system = load1[CP_SYS];
unsigned long long current_nice = load1[CP_NICE];
unsigned long long current_idle = load1[CP_IDLE];
// Next load times
unsigned long long next_user = load2[CP_USER];
unsigned long long next_system = load2[CP_SYS];
unsigned long long next_nice = load2[CP_NICE];
unsigned long long next_idle = load2[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;
}

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openbsd/cpu.h Normal file
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#ifndef CPU_H_
#define CPU_H_
#include <sys/types.h>
float cpu_percentage(unsigned);
uint8_t getCpuCount();
#endif

78
openbsd/load.cc Normal file
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/*
* Copyright 2012 Matthew McCormick
*
* 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.
* */
// This file was Authored by Justin Crawford <Justasic@gmail.com>
// Based on: https://github.com/freebsd/freebsd/blob/master/usr.bin/top/machine.c
// Based on: Apple.cpp for load_string/mem_string and apple's documentation
#include <sstream>
#include <string>
#include <stdlib.h> // getloadavg()
#include <cmath> // floorf()
#include <sys/types.h>
#include "cpu.h"
#include "load.h"
#include "../luts.h"
// Load Averages
std::string load_string( bool use_colors = false )
{
std::stringstream ss;
// Only get 3 load averages
cont int nelem = 3;
double averages[nelem];
// based on: opensource.apple.com/source/Libc/Libc-262/gen/getloadavg.c
if( getloadavg( averages, nelem ) < 0)
{
ss << "0.00 0.00 0.00"; // couldn't get averages.
}
else
{
if( use_colors )
{
// may not work
uint8_t cpu_count = getCpuCount();
unsigned load_percent = static_cast<unsigned int>(
averages[0] / cpu_count * 0.5f * 100.0f);
if( load_percent > 100 )
{
load_percent = 100;
}
ss << load_lut[load_percent];
}
for( int i = 0; i < nelem; ++i )
{
// Round to nearest, make sure this is only a 0.00 value not a 0.0000
float avg = floorf( static_cast<float> (averages[i] ) * 100 + 0.5 ) / 100;
ss << avg << " ";
}
if( use_colors )
{
ss << "#[fg=default,bg=default]";
}
}
return ss.str();
}

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#ifndef LOAD_H_
#define LOAD_H_
#include <string>
std::string load_string( bool );
#endif

110
openbsd/memory.cc Normal file
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/*
* Copyright 2012 Matthew McCormick
*
* 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.
* */
// This file was Authored by Justin Crawford <Justasic@gmail.com>
// Pawel Soltys <pwslts@gmail.com>
//#error ToDo: OpenBSD. This file is incomplete and likely will not compile if
//you remove this error (it is here to tell you it's unfinished)
#include <sstream>
#include <string>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <sys/vmmeter.h> // vmtotal struct
#include "common.h"
#include "memory.h"
#include "../luts.h"
static int pageshift;
#define pagesh(size) ((size) << pageshift)
std::string mem_string( bool use_colors = false )
{
std::ostringstream oss;
// These values are in bytes
int64_t total_mem = 0;
int64_t used_mem = 0;
int32_t free_mem = 0;
size_t size;
// get page size
static int hw_pagesize[] = { CTL_HW, HW_PAGESIZE };
int page_size = 0;
size = sizeof( page_size );
if( sysctl( hw_pagesize, 2, &page_size, &size, NULL, 0) < 0)
{
error("memory: error getting page size");
exit(23);
}
// calculate how far we must shift the variables
pageshift = 0;
while( page_size > 1 )
{
pageshift++;
page_size >>= 1;
}
// get vm memory stats
static int vm_totalmem[] = { CTL_VM, VM_METER };
struct vmtotal vm_total;
size = sizeof( vm_total );
if( sysctl( vm_totalmem, 2, &vm_total, &size, NULL, 0 ) < 0 )
{
error("memory: error getting vm memory stats");
exit(23);
}
// In case we need it, this gets the cached memory (bcstats.numbufpages)
static int vm_bcstats[] = { CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT };
struct bcachestats bcstats;
size = sizeof( bcstats );
if( sysctl( vm_bcstats, 3, &bcstats, &size, NULL, 0 ) < 0 )
{
error( "memory: error getting cached memory size" );
exit( 23 );
}
// calculations based on conky openbsd port
used_mem = pagesh( vm_total.t_rm );
free_mem = pagesh( vm_total.t_free );
// from nagios-memory plugin
used_mem -= pagesh( bcstats.numbufpages );
free_mem += pagesh( bcstats.numbufpages );
// calculate total memory
total_mem = used_mem + free_mem;
if( use_colors )
{
oss << mem_lut[( 100 * used_mem ) / total_mem];
}
oss << convert_unit( used_mem, MEGABYTES )
<< '/' << convert_unit( total_mem, MEGABYTES ) << "MB";
if( use_colors )
{
oss << "#[fg=default,bg=default]";
}
return oss.str();
}

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#ifndef MEMORY_H_
#define MEMORY_H_
#include <string>
std::string mem_string( bool );
#endif