[PATCH 06/49] timevar.h: add auto_client_timevar class

[David Malcolm]

This patch adds a class "auto_client_timevar", similar to auto_timevar,
but for plugins to use on their own timing items that aren't in
timevar.def

gcc/ChangeLog:
        * timevar.h (class auto_client_timevar): New class.
---
 gcc/timevar.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/gcc/timevar.h b/gcc/timevar.h
index ef404d0..d053ab7 100644
--- a/gcc/timevar.h
+++ b/gcc/timevar.h
@@ -256,6 +256,39 @@ class auto_timevar
   timevar_id_t m_tv;
 };
 
+/* An RAII class analogous to auto_timevar, but for a client item,
+   for use by plugins.  */
+
+class auto_client_timevar
+{
+ public:
+  auto_client_timevar (timer *t, const char *item_name)
+    : m_timer (t)
+  {
+    if (m_timer)
+      m_timer->push_client_item (item_name);
+  }
+
+  explicit auto_client_timevar (const char *item_name)
+    : m_timer (g_timer)
+  {
+    if (m_timer)
+      m_timer->push_client_item (item_name);
+  }
+
+  ~auto_client_timevar ()
+  {
+    if (m_timer)
+      m_timer->pop_client_item ();
+  }
+
+ private:
+  // Private to disallow copies.
+  auto_client_timevar (const auto_client_timevar &);
+
+  timer *m_timer;
+};
+
 extern void print_time (const char *, long);
 
 #endif /* ! GCC_TIMEVAR_H */
-- 
1.8.5.3