[PATCH] Report page cache size

[Richard Braun]

* rootdir.c: Add #include <mach/mach4.h>.
(rootdir_gc_meminfo): Call vm_cache_statistics() and report the result.
---
 rootdir.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/rootdir.c b/rootdir.c
index 1fa71b0..c24585e 100644
--- a/rootdir.c
+++ b/rootdir.c
@@ -20,6 +20,7 @@
 #include <mach/vm_param.h>
 #include <mach/vm_statistics.h>
 #include <mach/default_pager.h>
+#include <mach/mach4.h>
 #include <hurd/paths.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -263,6 +264,7 @@ rootdir_gc_meminfo (void *hook, char **contents, ssize_t 
*contents_len)
   host_basic_info_data_t hbi;
   mach_msg_type_number_t cnt;
   struct vm_statistics vmstats;
+  struct vm_cache_statistics cachestats;
   default_pager_info_t swap;
   error_t err;
 
@@ -270,6 +272,10 @@ rootdir_gc_meminfo (void *hook, char **contents, ssize_t 
*contents_len)
   if (err)
     return EIO;
 
+  err = vm_cache_statistics (mach_task_self (), &cachestats);
+  if (err)
+    return EIO;
+
   cnt = HOST_BASIC_INFO_COUNT;
   err = host_info (mach_host_self (), HOST_BASIC_INFO, (host_info_t) &hbi, 
&cnt);
   if (err)
@@ -294,7 +300,7 @@ rootdir_gc_meminfo (void *hook, char **contents, ssize_t 
*contents_len)
       (long unsigned) hbi.memory_size / 1024,
       (long unsigned) vmstats.free_count * PAGE_SIZE / 1024,
       0,
-      0,
+      (long unsigned) cachestats.page_count * PAGE_SIZE / 1024,
       (long unsigned) vmstats.active_count * PAGE_SIZE / 1024,
       (long unsigned) vmstats.inactive_count * PAGE_SIZE / 1024,
       (long unsigned) vmstats.wire_count * PAGE_SIZE / 1024,
-- 
1.7.10.4