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authorRichard Braun <rbraun@sceen.net>2012-09-23 00:25:13 +0200
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2012-09-23 00:28:40 +0200
commit9eacb0eab6eb8e35bb26ab3db660973fddf9e8fb (patch)
tree03d50c74d110f2bab3a8fb2ebac9eb7aca0313c4 /include
parentf5f6f62357b90e1ce1eb24f2929314b0d84078d0 (diff)
Provide basic page cache statistics
* Makefrag.am (EXTRA_DIST): Add kern/gnumach.srv. (include_mach_HEADERS): Add include/mach/gnumach.defs and include/mach/vm_cache_statistics.h (nodist_libkernel_a_SOURCES): Add kern/gnumach.server.defs.c, kern/gnumach.server.h, kern/gnumach.server.c, kern/gnumach.server.msgids, kern/gnumach.server.defs. * include/mach/mach_types.h: Add #include <mach/vm_cache_statistics.h>. * kern/ipc_kobject.c (ipc_kobject_server): Declare and call gnumach_server_routine. * vm/vm_object.c (vm_object_cached_pages): New variable. (vm_object_cached_pages_lock_data): Likewise. (vm_object_deallocate): Update number of cached pages. (vm_object_lookup): Likewise. (vm_object_lookup_name): Likewise. (vm_object_destroy): Likewise. (vm_object_enter): Likewise. * vm/vm_object.h (ref_count): Declare as int. (resident_page_count): Likewise. (vm_object_cached_count): Add extern declaration. (vm_object_cached_pages): Likewise. (vm_object_cached_pages_lock_data): Likewise. (vm_object_cached_pages_update): New macro. * vm/vm_resident.c (vm_page_insert): Assert resident page count doesn't overflow, update number of cached pages as appropriate. (vm_page_replace): Likewise. (vm_page_remove): Update number of cached pages as appropriate. * vm/vm_user.c: Add #include <mach/vm_cache_statistics.h>. (vm_cache_statistics): New function. * vm/vm_user.h: Add #include <mach/mach_types.h>. (vm_cache_statistics): New declaration. * include/mach/gnumach.defs: New file.
Diffstat (limited to 'include')
-rw-r--r--include/mach/gnumach.defs39
-rw-r--r--include/mach/mach_types.h1
2 files changed, 40 insertions, 0 deletions
diff --git a/include/mach/gnumach.defs b/include/mach/gnumach.defs
new file mode 100644
index 0000000..7331334
--- /dev/null
+++ b/include/mach/gnumach.defs
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 Free Software Foundation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+subsystem
+#if KERNEL_SERVER
+ KernelServer
+#endif /* KERNEL_SERVER */
+#if KERNEL_USER
+ KernelUser
+#endif /* KERNEL_USER */
+ gnumach 4200;
+
+#include <mach/std_types.defs>
+#include <mach/mach_types.defs>
+
+type vm_cache_statistics_data_t = struct[11] of integer_t;
+
+/*
+ * Return page cache statistics for the host on which the target task
+ * resides.
+ */
+routine vm_cache_statistics(
+ target_task : vm_task_t;
+ out vm_cache_stats : vm_cache_statistics_data_t);
diff --git a/include/mach/mach_types.h b/include/mach/mach_types.h
index f6ceac3..8768482 100644
--- a/include/mach/mach_types.h
+++ b/include/mach/mach_types.h
@@ -52,6 +52,7 @@
#include <mach/vm_inherit.h>
#include <mach/vm_prot.h>
#include <mach/vm_statistics.h>
+#include <mach/vm_cache_statistics.h>
#ifdef MACH_KERNEL
#include <kern/task.h> /* for task_array_t */