Add a benchmark for dmnsn_future.

2 files changed, 71 insertions, 1 deletions

diff --git a/libdimension/bench/Makefile.am b/libdimension/bench/Makefile.am
index 09530ff..934657c 100644
--- a/libdimension/bench/Makefile.am
+++ b/libdimension/bench/Makefile.am
@@ -1,5 +1,5 @@
 ###########################################################################
-## Copyright (C) 2009-2011 Tavian Barnes <tavianator@tavianator.com>     ##
+## Copyright (C) 2009-2013 Tavian Barnes <tavianator@tavianator.com>     ##
 ##                                                                       ##
 ## This file is part of The Dimension Build Suite.                       ##
 ##                                                                       ##
@@ -20,6 +20,7 @@
 EXTRA_PROGRAMS = array.bench                                                   \
                  geometry.bench                                                \
                  polynomial.bench                                              \
+                 future.bench                                                  \
                  prtree.bench
 
 AM_CFLAGS  = $(libsandglass_CFLAGS) -fno-inline -I$(top_srcdir)/libdimension
@@ -28,6 +29,7 @@ AM_LDFLAGS = $(libsandglass_LIBS) $(top_builddir)/libdimension/libdimension.la
 array_bench_SOURCES = array.c
 geometry_bench_SOURCES = geometry.c
 polynomial_bench_SOURCES = polynomial.c
+future_bench_SOURCES = future.c
 prtree_bench_SOURCES = prtree.c
 prtree_bench_CFLAGS = $(AM_CFLAGS) -finline
 
@@ -35,6 +37,7 @@ bench: $(EXTRA_PROGRAMS)
 	./array.bench
 	./geometry.bench
 	./polynomial.bench
+	./future.bench
 	./prtree.bench
 
 clean-local:
diff --git a/libdimension/bench/future.c b/libdimension/bench/future.c
new file mode 100644
index 0000000..7b199c7
--- /dev/null
+++ b/libdimension/bench/future.c
@@ -0,0 +1,67 @@
+/*************************************************************************
+ * Copyright (C) 2009-2013 Tavian Barnes <tavianator@tavianator.com>     *
+ *                                                                       *
+ * This file is part of The Dimension Benchmark Suite.                   *
+ *                                                                       *
+ * The Dimension Benchmark Suite 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 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Benchmark Suite 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, see <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+#include "../platform.c"
+#include "../future.c"
+#include "../threads.c"
+#include <sandglass.h>
+#include <stdlib.h>
+
+#define ITERATIONS 100000
+
+static int
+dmnsn_bench_future(void *ptr, unsigned int thread, unsigned int nthreads)
+{
+  dmnsn_future *future = (dmnsn_future *)ptr;
+  for (int i = 0; i < ITERATIONS; ++i) {
+    dmnsn_future_increment(future);
+  }
+  return 0;
+}
+
+static int
+dmnsn_bench_thread(void *ptr)
+{
+  size_t nthreads = 2*dmnsn_ncpus();
+
+  dmnsn_future *future = (dmnsn_future *)ptr;
+  dmnsn_future_set_total(future, nthreads*ITERATIONS);
+
+  return dmnsn_execute_concurrently(&dmnsn_bench_future, future, nthreads);
+}
+
+int
+main(void)
+{
+  dmnsn_timer timer1, timer2;
+  dmnsn_future *future = dmnsn_new_future();
+
+  dmnsn_timer_start(&timer1);
+  dmnsn_timer_start(&timer2);
+
+  dmnsn_new_thread(future, &dmnsn_bench_thread, future);
+
+  dmnsn_future_wait(future, 0.5);
+  dmnsn_timer_stop(&timer1);
+  printf(" 50%%: " DMNSN_TIMER_FORMAT "\n", DMNSN_TIMER_PRINTF(timer1));
+
+  dmnsn_future_join(future);
+  dmnsn_timer_stop(&timer2);
+  printf("100%%: " DMNSN_TIMER_FORMAT "\n", DMNSN_TIMER_PRINTF(timer2));
+}