fluent: add context switch benchmark

example/benchmark.c

@@ -0,0 +1,49 @@
+
+/*
+ * fluent.
+ *
+ * Cooperative multitasking engine.
+*/
+
+/*
+ * This example shows fiber context switch (yield)
+ * performance done in one second.
+*/
+
+#include <fluent.h>
+
+static int csw = 0;
+
+static void
+benchmark_worker(void *arg)
+{
+	ft_t env = arg;
+	printf("worker started.\n");
+	while (ft_is_online(env)) {
+		csw++;
+		ft_sleep(env, 0);
+	}
+	printf("worker done.\n");
+}
+
+static void
+benchmark_runner(void *arg)
+{
+	ft_t env = arg;
+	printf("benchmark started.\n");
+	ft_create(env, benchmark_worker, env);
+	ft_sleep(env, 1000);
+	printf("done.\n");
+	printf("context switches %d in 1 sec.\n", csw);
+	ft_stop(env);
+}
+
+int
+main(int argc, char *argv[])
+{
+	ft_t env = ft_new();
+	ft_create(env, benchmark_runner, env);
+	ft_start(env);
+	ft_free(env);
+	return 0;
+}

example/makefile

@@ -0,0 +1,18 @@
+CC      = gcc
+RM      = rm
+CFLAGS  = -I. -Wall -g -O0 -I../lib
+LFLAGS  = ../lib/libfluent.a -luv
+all: validate clean benchmark 
+benchmark: benchmark.o
+	$(CC) benchmark.o $(LFLAGS) -o benchmark
+validate:
+	@if [ ! -f ../lib/libfluent.a ]; then \
+		echo ""; \
+		echo "Please build the library first."; \
+		echo ""; \
+		exit 1; \
+	fi
+.c.o:
+	$(CC) $(CFLAGS) -c $<
+clean:
+	$(RM) -f benchmark benchmark.o