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dot_tmux/plugins/tmux-mem-cpu-load/osx/cpu.cc

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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;
+}
+

dot_tmux/plugins/tmux-mem-cpu-load/osx/memory.cc

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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 <string>
+#include <sstream>
+#include <mach/mach.h>
+#include <sys/sysctl.h> // for sysctl
+
+#include "memory.h"
+#include "conversions.h"
+
+void mem_status( MemoryStatus & status )
+{
+  // These values are in bytes
+  u_int64_t total_mem;
+  // float app_mem = 0.0f;
+  // float cached_file_mem = 0.0f;
+  float available_mem = 0.0f;
+  float percentage_mem;
+  float free_mem;
+  float free_mem_in_gigabytes; // used to check if free mem < 1 GB
+  //u_int64_t unused_mem;
+
+  vm_size_t page_size;
+  vm_statistics64_data_t vm_stats; // Use 64-bit VM statistics
+
+  // Get total physical memory
+  int mib[] = { CTL_HW, HW_MEMSIZE };
+  size_t length = sizeof( total_mem );
+  sysctl( mib, 2, &total_mem, &length, NULL, 0 );
+
+  mach_port_t mach_port = mach_host_self();
+
+  // Use HOST_VM_INFO64_COUNT as the count for vm_statistics64_data_t
+  mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
+
+  if( KERN_SUCCESS == host_page_size( mach_port, &page_size ) &&
+      KERN_SUCCESS == host_statistics64( mach_port, HOST_VM_INFO64,
+        ( host_info_t )&vm_stats, &count )
+    )
+  {
+    //unused_mem = static_cast<u_int64_t>( vm_stats.free_count * page_size );
+    // app_mem = static_cast<float>(( vm_stats.internal_page_count - vm_stats.purgeable_count ) * page_size );
+    // cached_file_mem = static_cast<float>(( vm_stats.purgeable_count + vm_stats.external_page_count ) * page_size );
+    available_mem = static_cast<float>(( vm_stats.free_count + vm_stats.external_page_count - vm_stats.speculative_count ) * page_size );
+  }
+
+  status.used_mem = convert_unit(static_cast< float >(total_mem - available_mem ), MEGABYTES );
+  status.total_mem = convert_unit(static_cast< float >( total_mem ), MEGABYTES );
+}