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

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+/* 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"
+
+uint32_t get_cpu_count()
+{
+  int32_t cpu_count = 0;
+  GETSYSCTL( "hw.ncpu", cpu_count );
+
+  return static_cast<uint32_t>( cpu_count );
+}
+
+float cpu_percentage( unsigned int cpu_usage_delay )
+{
+  u_long load1[CP_STATES];
+  u_long 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;
+}

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

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+/* 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.
+ */
+
+// 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 <sstream>
+#include <string>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "getsysctl.h"
+#include "memory.h"
+#include "conversions.h"
+
+void mem_status( MemoryStatus & status )
+{
+  // These values are in bytes
+  //u_int total;
+  //u_int free;
+  //u_int inactive;
+  //u_int cache;
+  u_int wired;
+  u_int active;
+  u_int page_size;
+  u_int page_count;
+
+  // Get total physical memory, page size, and some other needed info
+  // instead of using realmem which reports quantity of ram installed on
+  // platform, use physmem which reports ram available to system.
+  //GETSYSCTL( "hw.physmem", total );
+  page_size = getpagesize();
+  // page count reflects actual size of memory we have available for
+  // applications. it will be less than realmem or physmem, since it doesn't
+  // include what's been allocated for kernel, but it will be equal to
+  // free + inactive + cache + wired + active, and thus will reflect better
+  // what's actually available.
+  GETSYSCTL( "vm.stats.vm.v_page_count", page_count );
+
+  //GETSYSCTL( "vm.stats.vm.v_free_count", free );
+  //GETSYSCTL( "vm.stats.vm.v_inactive_count", inactive );
+  //GETSYSCTL( "vm.stats.vm.v_cache_count", cache );
+  GETSYSCTL( "vm.stats.vm.v_wire_count", wired ); // Buffers
+  GETSYSCTL( "vm.stats.vm.v_active_count", active );
+
+  // Get all memory which can be allocated, which on FreeBSD is:
+  // cached + inactive + free
+  //u_int unused = ( cache + inactive + free ) * page_size;
+
+  // Used memory on FreeBSD is active + wired.
+  u_int used = ( active + wired );
+
+  status.used_mem = convert_unit( static_cast< float >( used * (page_size >> 10) ), MEGABYTES, KILOBYTES );
+  status.total_mem = convert_unit( static_cast< float >( page_count * (page_size >> 10) ), MEGABYTES, KILOBYTES);
+}