[libgtop] switch from VM_METER to VM_UVMEXP

[Jasper Lievisse Adriaanse <jasperla src gnome org>]

commit 63ba7b2c1284c68ae3bb9362e700bd35e4cfdc5a
Author: Jasper Lievisse Adriaanse <jasper humppa nl>
Date:   Thu Apr 10 16:32:47 2014 +0200

    switch from VM_METER to VM_UVMEXP

 sysdeps/openbsd/mem.c |   31 ++++---------------------------
 1 files changed, 4 insertions(+), 27 deletions(-)
---
diff --git a/sysdeps/openbsd/mem.c b/sysdeps/openbsd/mem.c
index 6a49415..fe8c914 100644
--- a/sysdeps/openbsd/mem.c
+++ b/sysdeps/openbsd/mem.c
@@ -28,9 +28,7 @@
 
 #include <sys/mount.h>
 #include <sys/sysctl.h>
-#include <sys/vmmeter.h>
 #include <uvm/uvm_extern.h>
-#include <uvm/uvm_param.h>
 
 static const unsigned long _glibtop_sysdeps_mem =
 (1L << GLIBTOP_MEM_TOTAL)  + (1L << GLIBTOP_MEM_USED) +
@@ -49,7 +47,6 @@ static int pageshift;         /* log base 2 of the pagesize */
 #define pagetok(size) ((size) << pageshift)
 
 /* MIB array for sysctl */
-static int vmmeter_mib [] = { CTL_VM, VM_METER };
 static int uvmexp_mib  [] = { CTL_VM, VM_UVMEXP };
 static int bcstats_mib [] = { CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT };
 
@@ -77,12 +74,8 @@ _glibtop_init_mem_s (glibtop *server)
 void
 glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
 {
-       struct vmtotal vmt;
        struct uvmexp uvmexp;
        struct bcachestats bcstats;
-       u_int v_used_count;
-       u_int v_total_count;
-       u_int v_free_count;
        size_t length;
 
        glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_MEM), 0);
@@ -93,13 +86,6 @@ glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
                return;
 
        /* Get the data from sysctl */
-       length = sizeof (vmt);
-       if (sysctl (vmmeter_mib, 2, &vmt, &length, NULL, 0)) {
-               glibtop_warn_io_r (server, "sysctl (vm.vmmeter)");
-               bzero(&vmt, sizeof(length));
-               return;
-       }
-
        length = sizeof (uvmexp);
        if (sysctl (uvmexp_mib, 2, &uvmexp, &length, NULL, 0)) {
                glibtop_warn_io_r (server, "sysctl (vm.uvmexp)");
@@ -114,21 +100,12 @@ glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
                return;
        }
 
-       /*
-        * t_arm = active real memory
-        * t_rm = total real memory in use
-        * t_free = free memory pages
-        */
-       v_total_count = vmt.t_rm + vmt.t_free;
-       v_used_count = vmt.t_rm;
-       v_free_count = vmt.t_free;
-
        /* convert memory stats to Kbytes */
-       buf->total = (guint64) pagetok (v_total_count) << LOG1024;
-       buf->used  = (guint64) pagetok (v_used_count) << LOG1024;
-       buf->free  = (guint64) pagetok (v_free_count) << LOG1024;
+       buf->total = (guint64) pagetok (uvmexp.npages) << LOG1024;
+       buf->used  = (guint64) pagetok (uvmexp.npages - uvmexp.free) << LOG1024;
+       buf->free  = (guint64) pagetok (uvmexp.free) << LOG1024;
        buf->locked = (guint64) pagetok (uvmexp.wired) << LOG1024;
-       buf->shared = (guint64) pagetok (vmt.t_rmshr) << LOG1024;
+       buf->shared = (guint64) pagetok (0 /* XXX */) << LOG1024;
        buf->cached = (guint64) pagetok (bcstats.numbufpages) << LOG1024;
        buf->buffer = 0;