Index: src/examples/Bench.c
===================================================================
--- src/examples/Bench.c	(revision 550a3385540fe0c2834b682893eb6e8280c52af1)
+++ src/examples/Bench.c	(revision 550a3385540fe0c2834b682893eb6e8280c52af1)
@@ -0,0 +1,93 @@
+
+
+#include <fstream>
+#include <threads>
+
+#include <unistd.h>					// sysconf
+#include <sys/times.h>					// times
+#include <time.h>
+
+inline unsigned long long int Time() {
+    timespec ts;
+    clock_gettime(
+#if defined( __linux__ )
+	 CLOCK_THREAD_CPUTIME_ID,
+#elif defined( __freebsd__ )
+	 CLOCK_PROF,
+#elif defined( __solaris__ )
+	 CLOCK_HIGHRES,
+#else
+    #error uC++ : internal error, unsupported architecture
+#endif
+	 &ts );
+    return 1000000000LL * ts.tv_sec + ts.tv_nsec;
+} // Time
+
+//=======================================
+// time coroutine
+//=======================================
+
+struct CoroutineResume {
+    int N;
+    coroutine c;
+};
+
+coroutine* get_coroutine(CoroutineResume* this);
+void co_main(CoroutineResume* this);
+
+void ?{}(CoroutineResume* this, int N) {
+      this->N = N;
+	prime(this);
+}
+
+coroutine* get_coroutine(CoroutineResume* this) {
+      return &this->c;
+}
+
+void co_main(CoroutineResume* this) {
+	for ( int i = 1; i <= this->N; i += 1 ) {
+		suspend();
+	} // for
+} // CoroutineResume::main
+
+void resumer(CoroutineResume* this) {
+	long long int StartTime, EndTime;
+
+	StartTime = Time();
+	for ( int i = 1; i <= this->N; i += 1 ) {
+		resume(this);
+	} // for
+	EndTime = Time();
+	sout | "\t " | ( EndTime - StartTime ) / this->N;
+} // CoroutineResume::resumer
+
+
+int main() {
+	const int NoOfTimes =
+#if defined( __U_DEBUG__ )				// takes longer so run fewer iterations
+	100000;
+#else
+	1000000;
+#endif // __U_DEBUG__
+
+	sout | "\t\tcreate\tcreate\t16i/4o\t16i/4o\tresume/\tsignal/" | endl;
+	sout | "(nsecs)";
+	sout | "\t\tdelete/\tdelete/\tbytes\tbytes\tsuspend\twait" | endl;
+	sout | "\t\tblock\tdynamic\tdirect\taccept\tcycle\tcycle" | endl;
+
+	sout | "class\t";
+	sout | "\t N/A\t N/A\t N/A";
+	sout | "\t N/A\t N/A\t N/A";
+	sout | "\t" | endl;
+
+	sout | "coroutine";
+	sout | "\t N/A\t N/A\t N/A";
+	sout | "\t N/A";
+	{
+		CoroutineResume resumer = { NoOfTimes };
+		resumer(&resumer);
+	}
+	sout | "\t N/A";
+
+	sout | "\t" | endl;
+}