Index: src/hu/varadiistvan/scpl/_posix/CondVar.cc
===================================================================
--- src/hu/varadiistvan/scpl/_posix/CondVar.cc	(revision 5)
+++ src/hu/varadiistvan/scpl/_posix/CondVar.cc	(revision 5)
@@ -0,0 +1,60 @@
+// Copyright (c) 2013 by István Váradi
+
+// This file is part of VSCPL, a simple cross-platform utility library
+
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+
+// 1. Redistributions of source code must retain the above copyright notice, this
+//    list of conditions and the following disclaimer.
+// 2. 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 OWNER 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.
+
+// The views and conclusions contained in the software and documentation are those
+// of the authors and should not be interpreted as representing official policies,
+// either expressed or implied, of the FreeBSD Project.
+
+//------------------------------------------------------------------------------
+
+#include "CondVar.h"
+
+#include <sys/time.h>
+
+//------------------------------------------------------------------------------
+
+using hu::varadiistvan::scpl::CondVar;
+
+//------------------------------------------------------------------------------
+
+void CondVar::getAbsTime(struct ::timespec& abstime, int timeout)
+{
+    struct timeval tv;
+    gettimeofday(&tv, 0);
+
+    abstime.tv_sec = tv.tv_sec + timeout / 1000;
+    abstime.tv_nsec = (tv.tv_usec + (timeout%1000) * 1000) * 1000;
+    if (abstime.tv_nsec>=1000000000) {
+        ++abstime.tv_sec;
+        abstime.tv_nsec -= 1000000000;
+    }
+}
+
+//------------------------------------------------------------------------------
+
+// Local Variables:
+// mode: C++
+// c-basic-offset: 4
+// indent-tabs-mode: nil
+// End:
Index: src/hu/varadiistvan/scpl/_posix/CondVar.h
===================================================================
--- src/hu/varadiistvan/scpl/_posix/CondVar.h	(revision 5)
+++ src/hu/varadiistvan/scpl/_posix/CondVar.h	(revision 5)
@@ -0,0 +1,147 @@
+// Copyright (c) 2013 by István Váradi
+
+// This file is part of VSCPL, a simple cross-platform utility library
+
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+
+// 1. Redistributions of source code must retain the above copyright notice, this
+//    list of conditions and the following disclaimer.
+// 2. 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 OWNER 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.
+
+// The views and conclusions contained in the software and documentation are those
+// of the authors and should not be interpreted as representing official policies,
+// either expressed or implied, of the FreeBSD Project.
+
+#ifndef HU_VARADIISTVAN_SCPL_CONDVAR_H
+#define HU_VARADIISTVAN_SCPL_CONDVAR_H
+//------------------------------------------------------------------------------
+
+#include "Mutex.h"
+
+//------------------------------------------------------------------------------
+
+namespace hu { namespace varadiistvan { namespace scpl {
+
+//------------------------------------------------------------------------------
+
+/**
+ * A condition variable for POSIX threads.
+ */
+class CondVar
+{
+private:
+    /**
+     * Fill the given timespec with the absolute time corresponding to
+     * the given relative timeout.
+     */
+    static void getAbsTime(struct ::timespec& abstime, int timeout);
+
+    /**
+     * The pthreads structure.
+     */
+    pthread_cond_t cond;
+
+public:
+    /**
+     * Construct the condition variable.
+     */
+    CondVar();
+
+    /**
+     * Destroy the condition variable.
+     */
+    ~CondVar();
+
+    /**
+     * Wait for the condition variable.
+     *
+     * @param mutex the mutex to unlock and re-lock.
+     * @param timeout the number of milliseconds to wait at most. If
+     * negative, the function will wait indefinitely.
+     *
+     * @return true, if the condition variable was signalled, false
+     * if a timeout occured
+     */
+    bool wait(Mutex& mutex, int timeout = -1);
+
+    /**
+     * Signal the condition variable to wake up one thread.
+     */
+    void signal();
+
+    /**
+     * Signal all threads waiting on the condition variable.
+     */
+    void broadcast();
+};
+
+//------------------------------------------------------------------------------
+// Inline definitions
+//------------------------------------------------------------------------------
+
+inline CondVar::CondVar()
+{
+    pthread_cond_init(&cond, 0);
+}
+
+//------------------------------------------------------------------------------
+
+inline CondVar::~CondVar()
+{
+    pthread_cond_destroy(&cond);
+}
+
+//------------------------------------------------------------------------------
+
+inline bool CondVar::wait(Mutex& mutex, int timeout)
+{
+    if (timeout<0) {
+        pthread_cond_wait(&cond, &mutex.mutex);
+        return true;
+    } else {
+        struct ::timespec abstime;
+        getAbsTime(abstime, timeout);
+        return pthread_cond_timedwait(&cond, &mutex.mutex, &abstime)==0;
+    }
+}
+
+//------------------------------------------------------------------------------
+
+inline void CondVar::signal()
+{
+    pthread_cond_signal(&cond);
+}
+
+//------------------------------------------------------------------------------
+
+inline void CondVar::broadcast()
+{
+    pthread_cond_broadcast(&cond);
+}
+
+//------------------------------------------------------------------------------
+
+} /* namespace hu::varadiistvan::scpl */ } /* namespace hu::varadiistvan */ } /* namespace hu */
+
+//------------------------------------------------------------------------------
+#endif // HU_VARADIISTVAN_SCPL_CONDVAR_H
+
+// Local Variables:
+// mode: C++
+// c-basic-offset: 4
+// indent-tabs-mode: nil
+// End:
Index: src/hu/varadiistvan/scpl/_posix/Makefile.am
===================================================================
--- src/hu/varadiistvan/scpl/_posix/Makefile.am	(revision 1)
+++ src/hu/varadiistvan/scpl/_posix/Makefile.am	(revision 5)
@@ -2,7 +2,10 @@
 
 libvscpl_posix_la_SOURCES =	\
-	Thread.cc
+	Thread.cc		\
+	CondVar.cc
 
 include_vscpl_posixdir=$(includedir)/hu/varadiistvan/scpl/_posix
 include_vscpl_posix_HEADERS=\
-	Thread.h
+	Thread.h		\
+	Mutex.h			\
+	CondVar.h
