X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2Ftimer.hh;fp=src%2Ftimer.hh;h=3de2a952887af489de4ad20c9409b339ff6c2ea3;hp=0000000000000000000000000000000000000000;hb=79b5f738f2e38acb60cda7e09f54802933a17105;hpb=a891a2dcbbb63d9e771da6efff00a33da614e737

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+
+/*******************************************************************************
+
+ Copyright (c) 2009, Charles McGarvey
+ All rights reserved.
+ 
+ Redistribution   and   use  in  source  and  binary  forms,  with  or  without
+ modification, are permitted provided that the following conditions are met:
+ 
+   * Redistributions  of  source  code  must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+   * Redistributions  in binary form must reproduce the above copyright notice,
+     this  list of conditions and the following disclaimer in the documentation
+     and/or other materials provided with the distribution.
+ 
+ THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#ifndef _TIMER_HH_
+#define _TIMER_HH_
+
+/**
+ * @file timer.hh
+ * Functions for measuring time in a friendly unit.
+ */
+
+#include "math.hh"
+
+
+namespace dc {
+
+
+/**
+ * Get the number of seconds since a fixed, arbitrary point in the past.
+ * @return Seconds.
+ */
+
+scalar ticks();
+
+
+/**
+ * Put the thread to sleep for a certain period of time.  If absolute is true,
+ * then it will sleep until seconds after the fixed time in the past.  If
+ * absolute is false, it will sleep for seconds starting now.  Unlike system
+ * sleep functions, this one automatically resumes sleep if sleep was
+ * interrupted by a signal.  Therefore, calling this function is guaranteed to
+ * sleep for the requested amount of time.
+ */
+
+void sleep(scalar seconds, bool absolute = false);
+
+
+} // namespace dc
+
+
+#endif // _TIMER_HH_
+