Code Refactoring and NetBSD support.

* Added NetBSD support.
* removed per-platform header files: all the supported platforms were using
  identical header files for cpu, memory and load (except a few differences).
  Since this was unnecessary code duplication I've gathered what was common
  among the platforms, removed duplicates and moved what was left to the
  common/ dir.
* implemented get_cpu_count() function across all platforms. We are using it
  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.
* Unified load_string() across all platforms. Same case as with the header
  files. We can use the same getloadavg() based logic for getting load averages
  on all platforms. *BSD and OS X code was already the pretty much identical.
  Removed duplicated code and made linux adhere to getloadavg() logic.

CMakeLists.txt

@@ -59,20 +59,22 @@ endif(NOT CMAKE_BUILD_TYPE)
 # detect system type
 if(CMAKE_SYSTEM_NAME MATCHES "Linux")
   message(STATUS "Linux detected")
-  set(METER_SOURCES "linux/memory.cc" "linux/cpu.cc" "linux/load.cc")
+  set(METER_SOURCES "linux/memory.cc" "linux/cpu.cc" "common/load.cc")
 elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
   message(STATUS "Darwin detected")
-  set(METER_SOURCES "osx/memory.cc" "osx/cpu.cc" "osx/load.cc")
+  set(METER_SOURCES "osx/memory.cc" "osx/cpu.cc" "common/load.cc")
 elseif(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
   message(STATUS "FreeBSD detected")
-  set(METER_SOURCES "freebsd/memory.cc" "freebsd/cpu.cc" "freebsd/load.cc")
+  set(METER_SOURCES "freebsd/memory.cc" "freebsd/cpu.cc" "common/load.cc")
 elseif(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
   # OpenBSD Stuff Here
   message(STATUS "OpenBSD detected")
-  set(METER_SOURCES "openbsd/memory.cc" "openbsd/cpu.cc" "openbsd/load.cc")
+  set(METER_SOURCES "openbsd/memory.cc" "openbsd/cpu.cc" "common/load.cc")
   if(CMAKE_SYSTEM_VERSION VERSION_LESS 5.7)
     add_definitions(-DOPENBSD_WORKAROUND=1)
   endif()
+elseif(CMAKE_SYSTEM_NAME MATCHES "NetBSD")
+  set(METER_SOURCES "netbsd/memory.cc" "netbsd/cpu.cc" "common/load.cc")
 else()
   message(FATAL_ERROR "Cannot be compiled on this system")
 endif()

common/cpu.h

@@ -21,12 +21,28 @@
 
 #include <sys/types.h>
 
+#if defined(__APPLE__) && defined(__MACH__)
+  #define CP_USER 0
+  #define CP_SYS  1
+  #define CP_IDLE 2
+  #define CP_NICE 3
+  #define CP_STATES 4
+#else
   #define CP_USER   0
   #define CP_NICE   1
   #define CP_SYS    2
+
+  #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+    // *BSD or OSX
     #define CP_INTR   3
     #define CP_IDLE   4
-#define CPUSTATES 5
+    #define CP_STATES 5
+  #else
+    //linux
+    #define CP_IDLE 3
+    #define CP_STATES 4
+  #endif
+#endif
 
 float cpu_percentage( unsigned );
 uint8_t get_cpu_count();

common/error.h

@@ -23,6 +23,7 @@
 #include <sys/errno.h>
 #include <cerrno>
 #include <cstring> // strerror
+#include <cstdlib> // exit()
 
 inline void error( const char * error )
 {
@@ -30,7 +31,7 @@ inline void error( const char * error )
   using std::endl;
 
   cerr << error << ": " << strerror( errno ) << endl;
-  exit( 23 );
+  exit( EXIT_FAILURE );
 }
 
 #endif

common/getsysctl.h

@@ -26,6 +26,8 @@
 #include <cerrno>
 #include <sys/sysctl.h>
 #include <sys/types.h>
+#include <cstdlib>  //exit()
+#include <string.h> //strerror()
 
 #define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var))
 static inline void getsysctl( const char *name, void *ptr, size_t len )
@@ -36,7 +38,7 @@ static inline void getsysctl( const char *name, void *ptr, size_t len )
   {
     std::cerr << "sysctl(" << name << "...) failed: " << strerror( errno )
       << std::endl;
-    exit( 23 );
+    exit( EXIT_FAILURE );
   }
 
   if( nlen != len )

common/load.cc

@@ -26,7 +26,7 @@
 #include <cmath> // floorf()
 #include <sys/types.h>
 
-#include "getsysctl.h"
+#include "cpu.h"
 #include "load.h"
 #include "luts.h"
 
@@ -47,18 +47,13 @@ std::string load_string( bool use_colors = false )
   {
     if( use_colors )
     {
-      // may not work
-      int32_t cpu_count = 0;
-      GETSYSCTL( "hw.ncpu", cpu_count );
-
       unsigned load_percent = static_cast<unsigned int>( averages[0] / 
-          cpu_count * 0.5f * 100.0f );
+          get_cpu_count() * 0.5f * 100.0f );
 
       if( load_percent > 100 )
       {
         load_percent = 100;
       }
-
       ss << load_lut[load_percent];
     }
 
@@ -73,7 +68,6 @@ std::string load_string( bool use_colors = false )
     {
       ss << "#[fg=default,bg=default]";
     }
-
   }
 
   return ss.str();

common/main.cc

@@ -29,28 +29,9 @@
 // Tmux color lookup tables for the different metrics.
 #include "luts.h"
 
-#if defined(__APPLE__) && defined(__MACH__)
+#include "cpu.h"
-   // Apple osx system
+#include "memory.h"
-   #include "osx/cpu.h"
+#include "load.h"
-   #include "osx/memory.h"
-   #include "osx/load.h"
-#elif defined(__FreeBSD__) || defined(__NetBSD__)
-   // BSD system
-   #define BSD_BASED 1
-   #include "freebsd/cpu.h"
-   #include "freebsd/load.h"
-   #include "freebsd/memory.h"
-#elif defined(__OpenBSD)
-   #define BSD_BASED 1
-   #include "freebsd/cpu.h"
-   #include "freebsd/load.h"
-   #include "freebsd/memory.h"
-#else
-   // assume linux system
-   #include "linux/cpu.h"
-   #include "linux/memory.h"
-   #include "linux/load.h"
-#endif
 
 std::string cpu_string( unsigned int cpu_usage_delay, unsigned int graph_lines,
 	bool use_colors = false )

freebsd/cpu.cc

@@ -26,10 +26,18 @@
 #include "getsysctl.h"
 #include "cpu.h"
 
+uint8_t get_cpu_count()
+{
+  int32_t cpu_count = 0;
+  GETSYSCTL( "hw.ncpu", cpu_count );
+
+  return static_cast<uint8_t>( cpu_count );
+}
+
 float cpu_percentage( unsigned int cpu_usage_delay )
 {
-  u_long load1[CPUSTATES];
+  u_long load1[CP_STATES];
-  u_long load2[CPUSTATES];
+  u_long load2[CP_STATES];
 
   GETSYSCTL( "kern.cp_time", load1 );
   usleep( cpu_usage_delay );

freebsd/cpu.h

@@ -1,31 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef CPU_H_
-#define CPU_H_
-
-#define CP_USER   0
-#define CP_NICE   1
-#define CP_SYS    2
-#define CP_INTR   3
-#define CP_IDLE   4
-#define CPUSTATES 5
-
-float cpu_percentage( unsigned );
-
-#endif

linux/cpu.cc

@@ -23,6 +23,11 @@
 #include "cpu.h"
 #include "luts.h"
 
+uint8_t get_cpu_count()
+{
+  return sysconf( _SC_NPROCESSORS_ONLN );
+}
+
 float cpu_percentage( unsigned cpu_usage_delay )
 {
   std::string line;
@@ -32,7 +37,7 @@ float cpu_percentage( unsigned cpu_usage_delay )
   // cpu stats
   // user, nice, system, idle
   // in that order
-  unsigned long long stats[4];
+  unsigned long long stats[CP_STATES];
 
   std::ifstream stat_file( "/proc/stat" );
   getline( stat_file, line );
@@ -64,7 +69,10 @@ float cpu_percentage( unsigned cpu_usage_delay )
     stats[i] = std::stoll( line.substr( substr_start, substr_len ) ) - stats[i];
   }
 
-  return static_cast<float>( stats[0] + stats[1] + stats[2]) / 
+  return static_cast<float>( 
-    static_cast<float>( stats[0] + stats[1] + stats[2] + stats[3] ) * 100.0;
+    stats[CP_USER] + stats[CP_NICE] + stats[CP_SYS]
+    ) / static_cast<float>( 
+        stats[CP_USER] + stats[CP_NICE] + stats[CP_SYS] + stats[CP_IDLE] 
+    ) * 100.0;
 }
 

linux/cpu.h

@@ -1,24 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef CPU_H_
-#define CPU_H_
-
-float cpu_percentage( unsigned );
-
-#endif

linux/load.cc

@@ -1,70 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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 <string>
-#include <sstream>
-#include <unistd.h> // sysconf()?
-#include <sys/sysinfo.h>
-#include <linux/kernel.h> // SI_LOAD_SHIFT
-
-#include "load.h"
-#include "luts.h"
-
-std::string load_string( bool use_colors = false )
-{
-  std::ostringstream oss;
-
-  float f = static_cast<float>( 1 << SI_LOAD_SHIFT );
-
-  struct sysinfo sinfo;
-  sysinfo( &sinfo );
-
-  if( use_colors )
-  {
-    // Likely does not work on BSD, but not tested
-    unsigned number_of_cpus = sysconf( _SC_NPROCESSORS_ONLN );
-
-    float recent_load = sinfo.loads[0] / f;
-
-    // colors range from zero to twice the number of cpu's 
-    // for the most recent load metric
-    unsigned load_percent = static_cast< unsigned int >( 
-        recent_load / number_of_cpus * 0.5f * 100.0f );
-
-    if( load_percent > 100 )
-    {
-      load_percent = 100;
-    }
-
-    oss << load_lut[load_percent];
-  }
-
-  // set precision so we get results like "0.22"
-  oss.setf( std::ios::fixed );
-  oss.precision( 2 );
-
-  oss << sinfo.loads[0] / f << " " << sinfo.loads[1] / f << " " 
-    << sinfo.loads[2] / f;
-
-  if( use_colors )
-  {
-    oss << "#[fg=default,bg=default]";
-  }
-
-  return oss.str();
-}

linux/load.h

@@ -1,26 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef LOAD_H_
-#define LOAD_H_
-
-#include <string>
-
-std::string load_string( bool );
-
-#endif

linux/memory.h

@@ -1,26 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef MEMORY_H_
-#define MEMORY_H_
-
-#include <string>
-
-std::string mem_string( bool );
-
-#endif

netbsd/cpu.cc

@@ -0,0 +1,65 @@
+/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
+ *
+ * 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.
+ */
+
+// 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 "getsysctl.h"
+#include "cpu.h"
+
+uint8_t get_cpu_count()
+{
+  int cpu_count = 0;
+  GETSYSCTL( "hw.ncpu", cpu_count );
+
+  return static_cast<uint8_t>( cpu_count );
+}
+
+float cpu_percentage( unsigned int cpu_usage_delay )
+{
+  u_int64_t load1[CP_STATES];
+  u_int64_t load2[CP_STATES];
+
+  GETSYSCTL( "kern.cp_time", load1 );
+  usleep( cpu_usage_delay );
+  GETSYSCTL( "kern.cp_time", load2 );
+
+  // 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;
+}

netbsd/memory.cc

@@ -0,0 +1,64 @@
+/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
+ *
+ * Copyright 2012 Matthew McCormick
+ * 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 <sstream>
+#include <string>
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <uvm/uvm_extern.h> // uvmexp struct
+
+#include "error.h"
+#include "luts.h"
+#include "conversions.h"
+#include "memory.h"
+
+std::string mem_string( bool use_colors = false )
+{
+  std::ostringstream oss;
+
+  // get vm memory stats
+  static int vm_totalmem[] = { CTL_VM, VM_UVMEXP2 };
+  struct uvmexp_sysctl mem;
+  size_t size = sizeof( mem );
+  if( sysctl( vm_totalmem, 2, &mem, &size, NULL, 0 ) < 0 )
+  {
+    error( "memory: error getting vm memory stats" );
+  }
+
+  int64_t total_mem = ( mem.npages << mem.pageshift );
+  int64_t used_mem = 
+    ( mem.active + mem.wired - mem.filepages ) << mem.pageshift;
+
+  if( use_colors )
+  {
+    oss << mem_lut[( 100 * used_mem ) / total_mem];
+  }
+
+  // add 1 to used which gets lost somewhere along conversions
+  oss << convert_unit( used_mem, MEGABYTES )
+    << '/' << convert_unit( total_mem, MEGABYTES ) << "MB";
+
+  if( use_colors )
+  {
+    oss << "#[fg=default,bg=default]";
+  }
+
+  return oss.str();
+
+}

openbsd/cpu.cc

@@ -42,8 +42,8 @@ float cpu_percentage( unsigned int cpu_usage_delay )
 {
   int cpu_ctl[] = { CTL_KERN, KERN_CPTIME };
 
-  u_long load1[CPUSTATES];
+  u_long load1[CP_STATES];
-  u_long load2[CPUSTATES];
+  u_long load2[CP_STATES];
 
   size_t size = sizeof( load1 );
 

openbsd/load.cc

@@ -1,75 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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 <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
-  const 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 = get_cpu_count();
-
-      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();
-}

openbsd/load.h

@@ -1,26 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef LOAD_H_
-#define LOAD_H_
-
-#include <string>
-
-std::string load_string( bool );
-
-#endif

openbsd/memory.h

@@ -1,26 +0,0 @@
-/* vim: tabstop=2 shiftwidth=2 expandtab textwidth=80 linebreak wrap
- *
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef MEMORY_H_
-#define MEMORY_H_
-
-#include <string>
-
-std::string mem_string( bool );
-
-#endif

osx/cpu.cc

@@ -21,6 +21,11 @@
 
 #include "cpu.h"
 
+uint8_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/
@@ -53,15 +58,15 @@ float cpu_percentage( unsigned int cpu_usage_delay )
   host_cpu_load_info_data_t load2 = _get_cpu_percentage();
 
   // Current load times
-  unsigned long long current_user = load1.cpu_ticks[CPU_STATE_USER];
+  unsigned long long current_user = load1.cpu_ticks[CP_USER];
-  unsigned long long current_system = load1.cpu_ticks[CPU_STATE_SYSTEM];
+  unsigned long long current_system = load1.cpu_ticks[CP_SYS];
-  unsigned long long current_nice = load1.cpu_ticks[CPU_STATE_NICE];
+  unsigned long long current_nice = load1.cpu_ticks[CP_NICE];
-  unsigned long long current_idle = load1.cpu_ticks[CPU_STATE_IDLE];
+  unsigned long long current_idle = load1.cpu_ticks[CP_IDLE];
   // Next load times
-  unsigned long long next_user = load2.cpu_ticks[CPU_STATE_USER];
+  unsigned long long next_user = load2.cpu_ticks[CP_USER];
-  unsigned long long next_system = load2.cpu_ticks[CPU_STATE_SYSTEM];
+  unsigned long long next_system = load2.cpu_ticks[CP_SYS];
-  unsigned long long next_nice = load2.cpu_ticks[CPU_STATE_NICE];
+  unsigned long long next_nice = load2.cpu_ticks[CP_NICE];
-  unsigned long long next_idle = load2.cpu_ticks[CPU_STATE_IDLE];
+  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;

osx/cpu.h

@@ -1,23 +0,0 @@
-/*
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef CPU_H_
-#define CPU_H_
-
-float cpu_percentage ( unsigned );
-
-#endif

osx/load.cc

@@ -1,89 +0,0 @@
-/*
- * 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 <string>
-#include <sstream>
-#include <fstream>
-#include <cmath> // floorf()
-
-#include <unistd.h>
-#include <stdlib.h> // getloadavg()
-
-#include "load.h"
-#include "luts.h"
-
-std::string load_string( bool use_colors = false )
-{
-  std::ostringstream oss;
-
-  // Both apple and BSD style systems have these api calls
-  // Only get 3 load averages
-  const int nelem = 3;
-  double averages[nelem];
-  // based on: 
-  // http://www.opensource.apple.com/source/Libc/Libc-262/gen/getloadavg.c
-  if( getloadavg( averages, nelem ) < 0 )
-  {
-    oss << "0.00 0.00 0.00"; // couldn't get averages.
-  }
-  else
-  {
-    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;
-      oss << avg << " ";
-    }
-  }
-
-  std::string load_line( oss.str() );
-  oss.str( "" );
-
-  if( use_colors )
-  {
-    // Likely does not work on BSD, but not tested
-    unsigned number_of_cpus = sysconf( _SC_NPROCESSORS_ONLN );
-
-    std::istringstream iss( load_line.substr( 0, 4 ) );
-    float recent_load;
-    iss >> recent_load;
-    // colors range from zero to twice the number of 
-    // cpu's for the most recent load metric
-
-    unsigned load_percent = static_cast< unsigned int >( 
-        recent_load / number_of_cpus * 0.5f * 100.0f );
-
-    if( load_percent > 100 )
-    {
-      load_percent = 100;
-    }
-
-    oss << load_lut[load_percent];
-  }
-
-  oss << load_line.substr( 0, 14 );
-
-  if( use_colors )
-  {
-    oss << "#[fg=default,bg=default]";
-  }
-
-  return oss.str();
-}
-

osx/load.h

@@ -1,25 +0,0 @@
-/*
- * Copyright 2012 Matthew McCormick
- * 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.
- */
-
-#ifndef LOAD_H_
-#define LOAD_H_
-
-#include <string>
-
-std::string load_string( bool );
-
-#endif

osx/memory.h

@@ -1,26 +0,0 @@
-/*
- * 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.
- */
-
-#ifndef MEMORY_H_
-#define MEMORY_H_
-
-#include <string>
-
-std::string mem_string( bool );
-
-#endif