1 files changed, 91 insertions, 0 deletions
diff --git a/intern/cycles/util/time.h b/intern/cycles/util/time.h
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--- /dev/null
+++ b/intern/cycles/util/time.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2011-2013 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __UTIL_TIME_H__
+#define __UTIL_TIME_H__
+
+#include "util/function.h"
+#include "util/string.h"
+
+CCL_NAMESPACE_BEGIN
+
+/* Give current time in seconds in double precision, with good accuracy. */
+
+double time_dt();
+
+/* Sleep for the specified number of seconds. */
+
+void time_sleep(double t);
+
+/* Scoped timer. */
+
+class scoped_timer {
+ public:
+  explicit scoped_timer(double *value = NULL) : value_(value)
+  {
+    time_start_ = time_dt();
+  }
+
+  ~scoped_timer()
+  {
+    if (value_ != NULL) {
+      *value_ = get_time();
+    }
+  }
+
+  double get_start() const
+  {
+    return time_start_;
+  }
+
+  double get_time() const
+  {
+    return time_dt() - time_start_;
+  }
+
+ protected:
+  double *value_;
+  double time_start_;
+};
+
+class scoped_callback_timer {
+ public:
+  using callback_type = function<void(double)>;
+
+  explicit scoped_callback_timer(callback_type cb) : cb(cb)
+  {
+  }
+
+  ~scoped_callback_timer()
+  {
+    if (cb) {
+      cb(timer.get_time());
+    }
+  }
+
+ protected:
+  scoped_timer timer;
+  callback_type cb;
+};
+
+/* Make human readable string from time, compatible with Blender metadata. */
+
+string time_human_readable_from_seconds(const double seconds);
+double time_human_readable_to_seconds(const string &str);
+
+CCL_NAMESPACE_END
+
+#endif