1 files changed, 157 insertions, 0 deletions
diff --git a/src/netcpu_osx.c b/src/netcpu_osx.c
new file mode 100644
index 0000000..7036c2b
--- /dev/null
+++ b/src/netcpu_osx.c
@@ -0,0 +1,157 @@
+char   netcpu_sysctl_id[]="\
+@(#)netcpu_osx.c  Version 2.6.0";
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#endif
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+#if HAVE_LIMITS_H
+# include <limits.h>
+# ifndef LONG_LONG_MAX
+#  define LONG_LONG_MAX LLONG_MAX
+# endif /* LONG_LONG_MAX */
+#endif
+
+
+#include <errno.h>
+
+#include <mach/host_info.h>
+#include <mach/mach_types.h>
+/* it would seem that on 10.3.9 mach_msg_type_number_t is in
+   <mach/message.h> so we'll see about including that one too.
+   hopefully it still exists in 10.4. if not, we will need to add some
+   .h file checks in configure so we can use "HAVE_mumble" ifdefs
+   here */
+#include <mach/message.h>
+
+/* some of this is to make Tiger (10.4), Leopard (10.5) and
+   SnowLeopard (10.6) happy, we hope it does not anger previous
+   versions */
+#include <mach/mach_host.h>
+/* #include <mach/mach_port.h> */
+
+#include "netsh.h"
+#include "netlib.h"
+
+#define UNSIGNED_DIFFERENCE(x,y) (x >= y ? x - y : (0 - y) + x )
+
+static host_cpu_load_info_data_t lib_start_ticks;
+static host_cpu_load_info_data_t lib_end_ticks;
+
+static mach_port_t lib_host_port;
+
+void
+cpu_util_init(void)
+{
+  lib_host_port = mach_host_self();
+  return;
+}
+
+void
+cpu_util_terminate(void)
+{
+  mach_port_deallocate(lib_host_port);
+  return;
+}
+
+int
+get_cpu_method(void)
+{
+  return OSX;
+}
+
+void
+get_cpu_idle(uint64_t *res)
+{
+    return;
+}
+
+void
+get_host_ticks(host_cpu_load_info_t info)
+{
+  mach_msg_type_number_t count;
+
+  count = HOST_CPU_LOAD_INFO_COUNT;
+  host_statistics(lib_host_port, HOST_CPU_LOAD_INFO, (host_info_t)info, &count);
+  return;
+}
+
+/* calibrate_sysctl  - perform the idle rate calculation using the
+   sysctl call - typically on BSD */
+
+float
+calibrate_idle_rate(int iterations, int interval)
+{
+    return (float)0.0;
+}
+
+float
+calc_cpu_util_internal(float elapsed_time)
+{
+  float correction_factor;
+  natural_t	userticks, systicks, idleticks, totalticks;
+
+  memset(&lib_local_cpu_stats, 0, sizeof(lib_local_cpu_stats));
+
+  /* It is possible that the library measured a time other than the
+     one that the user want for the cpu utilization calculations - for
+     example, tests that were ended by watchdog timers such as the udp
+     stream test. We let these tests tell up what the elapsed time
+     should be. */
+
+  if (elapsed_time != 0.0) {
+    correction_factor = (float) 1.0 +
+      ((lib_elapsed - elapsed_time) / elapsed_time);
+  }
+  else {
+    correction_factor = (float) 1.0;
+  }
+
+  if (debug) {
+    fprintf(where, "correction factor: %f\n", correction_factor);
+  }
+
+  userticks = UNSIGNED_DIFFERENCE((lib_end_ticks.cpu_ticks[CPU_STATE_USER] + lib_end_ticks.cpu_ticks[CPU_STATE_NICE]),
+				  (lib_start_ticks.cpu_ticks[CPU_STATE_USER] + lib_start_ticks.cpu_ticks[CPU_STATE_NICE]));
+  systicks = UNSIGNED_DIFFERENCE(lib_end_ticks.cpu_ticks[CPU_STATE_SYSTEM], lib_start_ticks.cpu_ticks[CPU_STATE_SYSTEM]);
+  idleticks = UNSIGNED_DIFFERENCE(lib_end_ticks.cpu_ticks[CPU_STATE_IDLE], lib_start_ticks.cpu_ticks[CPU_STATE_IDLE]);
+  totalticks = userticks + systicks + idleticks;
+
+  lib_local_cpu_stats.cpu_util = ((float)userticks
+                                  + (float)systicks)/(float)totalticks * 100.0f;
+  lib_local_cpu_stats.cpu_util *= correction_factor;
+
+  return lib_local_cpu_stats.cpu_util;
+
+}
+void
+cpu_start_internal(void)
+{
+    get_host_ticks(&lib_start_ticks);
+}
+
+void
+cpu_stop_internal(void)
+{
+    get_host_ticks(&lib_end_ticks);
+}