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authorIvana Hutarova Varekova <varekova@redhat.com>2009-07-17 09:41:12 +0200
committerDhaval Giani <dhaval@linux.vnet.ibm.com>2009-08-06 11:59:15 +0530
commit0d943b1fd84f43edda88d8f1e45a2cfe56b0edeb (patch)
treef9b6b23aaede896427be5b295a57109f53a891a9 /include/libcgroup.h
parent5aa993cef39ffd59eae1e363c2a731a03507b0d3 (diff)
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add api for generating the list of all controllers (not only mount ones)
this patch add api for generating the list of all controllers (not only mount ones) - it uses three functions: cgroup_get_all_controller_begin cgroup_get_all_controller_next cgroup_get_all_controller_end and structure: struct controller_data { char name[FILENAME_MAX]; int hierarchy; int num_cgroups; int enabled; }; the data are read from /proc/cgroups file Signed-off-by: Ivana Hutarova Varekova <varekova@redhat.com> Reviewed-by: Jan Safranek <jsafrane@redhat.com> Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Diffstat (limited to 'include/libcgroup.h')
-rw-r--r--include/libcgroup.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/libcgroup.h b/include/libcgroup.h
index d3fad97..b8a3a77 100644
--- a/include/libcgroup.h
+++ b/include/libcgroup.h
@@ -155,6 +155,25 @@ struct cgroup_mount_point {
char path[FILENAME_MAX];
};
+/*
+ * Detailed information about available controller.
+ */
+
+struct controller_data {
+/** Controller name. */
+ char name[FILENAME_MAX];
+/**
+ * Hierarchy ID. Controllers with the same hierarchy ID
+ * are mounted together as one hierarchy. Controllers with
+ * ID 0 are not currently used.
+ */
+ int hierarchy;
+/** Number of groups. */
+ int num_cgroups;
+/** Enabled flag */
+ int enabled;
+};
+
/* Functions and structures that can be used by the application*/
struct cgroup;
struct cgroup_controller;
@@ -386,6 +405,20 @@ int cgroup_get_controller_begin(void **handle, struct cgroup_mount_point *info);
int cgroup_get_controller_next(void **handle, struct cgroup_mount_point *info);
int cgroup_get_controller_end(void **handle);
+/**
+ * Read the list of controllers from /proc/cgroups (not mounted included)
+ * @param handle: Handle to be used for iteration.
+ * @param info: The structure which contains all controller data
+ */
+int cgroup_get_all_controller_begin(void **handle,
+ struct controller_data *info);
+/*
+ * While walking through the mount table, the controllers will be
+ * returned in the same order as is in /proc/cgroups file
+ */
+int cgroup_get_all_controller_next(void **handle, struct controller_data *info);
+int cgroup_get_all_controller_end(void **handle);
+
/*
* Reads the mount to table to give the mount point of a controller
* @controller: Name of the controller