initial import

1 files changed, 61 insertions, 0 deletions

diff --git a/libs/vdr/include/CondWait.h b/libs/vdr/include/CondWait.h
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+/**
+ * File:      CondWait.h
+ * Project:   libvdr - classes taken from vdr-project
+ * 
+ * from "Video Disk Recorder":
+ * 
+ * Copyright (C) 2000, 2003, 2006, 2008 Klaus Schmidinger
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * 
+ * The original author can be reached at kls@tvdr.de
+ * 
+ * The vdr project's page is at http://www.tvdr.de
+ * 
+ */
+#ifndef CONDWAIT_H
+#define	CONDWAIT_H
+
+#include <pthread.h>
+
+class cCondWait {
+public:
+  cCondWait(void);
+  ~cCondWait();
+  
+  bool Wait(int TimeoutMs = 0);
+       ///< Waits at most TimeoutMs milliseconds for a call to Signal(), or
+       ///< forever if TimeoutMs is 0.
+       ///< \return Returns true if Signal() has been called, false it the given
+       ///< timeout has expired.
+  void Signal(void);
+       ///< Signals a caller of Wait() that the condition it is waiting for is met.
+
+  static void SleepMs(int TimeoutMs);
+       ///< Creates a cCondWait object and uses it to sleep for TimeoutMs
+       ///< milliseconds, immediately giving up the calling thread's time
+       ///< slice and thus avoiding a "busy wait".
+       ///< In order to avoid a possible busy wait, TimeoutMs will be automatically
+       ///< limited to values >2.
+
+private:
+  pthread_mutex_t mutex;
+  pthread_cond_t cond;
+  bool signaled;
+  };
+
+#endif	/* CONDWAIT_H */
+