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[PATCH -tip 07/14] perf tools: Add for_each macros for strlist
- From: Masami Hiramatsu <mhiramat at redhat dot com>
- To: Ingo Molnar <mingo at elte dot hu>, Frederic Weisbecker <fweisbec at gmail dot com>, lkml<linux-kernel at vger dot kernel dot org>
- Cc: Paul Mackerras <paulus at samba dot org>, Arnaldo Carvalho de Melo <acme at redhat dot com>, Steven Rostedt <rostedt at goodmis dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Christoph Hellwig <hch at infradead dot org>, "Frank Ch. Eigler" <fche at redhat dot com>, Jason Baron <jbaron at redhat dot com>, "K.Prasad" <prasad at linux dot vnet dot ibm dot com>, Peter Zijlstra <peterz at infradead dot org>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>, systemtap<systemtap at sources dot redhat dot com>, DLE<dle-develop at lists dot sourceforge dot net>
- Date: Tue, 15 Dec 2009 10:31:56 -0500
- Subject: [PATCH -tip 07/14] perf tools: Add for_each macros for strlist
- References: <20091215153106.17436.66584.stgit@dhcp-100-2-132.bos.redhat.com>
Add for_each iteration macros for strlist. This patch
introduces strlist__for_each() and strlist__for_each_safe(),
both are similar to list_for_each() and list_for_each_safe().
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
---
tools/perf/util/strlist.h | 34 ++++++++++++++++++++++++++++++++++
1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/tools/perf/util/strlist.h b/tools/perf/util/strlist.h
index 59091c7..3ba8390 100644
--- a/tools/perf/util/strlist.h
+++ b/tools/perf/util/strlist.h
@@ -40,5 +40,39 @@ static inline unsigned int strlist__nr_entries(const struct strlist *self)
return self->nr_entries;
}
+/* For strlist iteration */
+static inline struct str_node *strlist__first(struct strlist *self)
+{
+ struct rb_node *rn = rb_first(&self->entries);
+ return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
+}
+static inline struct str_node *strlist__next(struct str_node *sn)
+{
+ struct rb_node *rn;
+ if (!sn)
+ return NULL;
+ rn = rb_next(&sn->rb_node);
+ return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
+}
+
+/**
+ * strlist_for_each - iterate over a strlist
+ * @pos: the &struct str_node to use as a loop cursor.
+ * @self: the &struct strlist for loop.
+ */
+#define strlist__for_each(pos, self) \
+ for (pos = strlist__first(self); pos; pos = strlist__next(pos))
+
+/**
+ * strlist_for_each_safe - iterate over a strlist safe against removal of
+ * str_node
+ * @pos: the &struct str_node to use as a loop cursor.
+ * @n: another &struct str_node to use as temporary storage.
+ * @self: the &struct strlist for loop.
+ */
+#define strlist__for_each_safe(pos, n, self) \
+ for (pos = strlist__first(self), n = strlist__next(pos); pos;\
+ pos = n, n = strlist__next(n))
+
int strlist__parse_list(struct strlist *self, const char *s);
#endif /* __PERF_STRLIST_H */
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com