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authorDavid Ahern <dsahern@gmail.com>2012-07-30 22:31:32 -0600
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-08-03 10:37:21 -0300
commit37bbd3fff1480a1f5d57abb9e9e56f468954c1b1 (patch)
tree458ea5149b983dc9cac9ca4bd41e18b5e1655176 /tools/perf/util/rblist.h
parent347ed9903a10179d1cf733d5d77072b283d89da3 (diff)
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perf tools: Introducing rblist
rblist is the rbtree based code from strlist. It will be the common code for strlist and the to-be-introduced intlist. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1343709095-7089-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/rblist.h')
-rw-r--r--tools/perf/util/rblist.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/tools/perf/util/rblist.h b/tools/perf/util/rblist.h
new file mode 100644
index 000000000000..6d0cae5ae83d
--- /dev/null
+++ b/tools/perf/util/rblist.h
@@ -0,0 +1,47 @@
+#ifndef __PERF_RBLIST_H
+#define __PERF_RBLIST_H
+
+#include <linux/rbtree.h>
+#include <stdbool.h>
+
+/*
+ * create node structs of the form:
+ * struct my_node {
+ * struct rb_node rb_node;
+ * ... my data ...
+ * };
+ *
+ * create list structs of the form:
+ * struct mylist {
+ * struct rblist rblist;
+ * ... my data ...
+ * };
+ */
+
+struct rblist {
+ struct rb_root entries;
+ unsigned int nr_entries;
+
+ int (*node_cmp)(struct rb_node *rbn, const void *entry);
+ struct rb_node *(*node_new)(struct rblist *rlist, const void *new_entry);
+ void (*node_delete)(struct rblist *rblist, struct rb_node *rb_node);
+};
+
+void rblist__init(struct rblist *rblist);
+void rblist__delete(struct rblist *rblist);
+int rblist__add_node(struct rblist *rblist, const void *new_entry);
+void rblist__remove_node(struct rblist *rblist, struct rb_node *rb_node);
+struct rb_node *rblist__find(struct rblist *rblist, const void *entry);
+struct rb_node *rblist__entry(const struct rblist *rblist, unsigned int idx);
+
+static inline bool rblist__empty(const struct rblist *rblist)
+{
+ return rblist->nr_entries == 0;
+}
+
+static inline unsigned int rblist__nr_entries(const struct rblist *rblist)
+{
+ return rblist->nr_entries;
+}
+
+#endif /* __PERF_RBLIST_H */