1 files changed, 47 insertions, 0 deletions
diff --git a/src/zen/bench.cpp b/src/zen/bench.cpp
index 614454ed5..2332ce1b8 100644
--- a/src/zen/bench.cpp
+++ b/src/zen/bench.cpp
@@ -119,6 +119,53 @@ EmptyStandByList()
 
 }  // namespace zen::bench::util
 
+#elif ZEN_PLATFORM_LINUX
+
+#	include <fcntl.h>
+#	include <unistd.h>
+
+namespace zen::bench::util {
+
+void
+EmptyStandByList()
+{
+	sync();
+
+	int Fd = open("/proc/sys/vm/drop_caches", O_WRONLY);
+	if (Fd < 0)
+	{
+		throw std::runtime_error("Failed to open /proc/sys/vm/drop_caches (are you running as root?)");
+	}
+
+	if (write(Fd, "3", 1) != 1)
+	{
+		close(Fd);
+		throw std::runtime_error("Failed to write to /proc/sys/vm/drop_caches");
+	}
+
+	close(Fd);
+}
+
+}  // namespace zen::bench::util
+
+#elif ZEN_PLATFORM_MAC
+
+#	include <cstdlib>
+
+namespace zen::bench::util {
+
+void
+EmptyStandByList()
+{
+	int Result = system("/usr/sbin/purge");
+	if (Result != 0)
+	{
+		throw std::runtime_error("Failed to run /usr/sbin/purge (are you running as root?)");
+	}
+}
+
+}  // namespace zen::bench::util
+
 #else
 
 namespace zen::bench::util {