X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=test%2Flib%2Frandom.hpp;h=322de6af91392b59fede7d91945039fcc299e6fb;hb=caf2219d302e8554f3b9bf39ab94f736e8427ef6;hp=1d7f7a6f7973d7ae2496b5c882d1e8926d177f89;hpb=fb3710011600c04359d26615be7a92df1742a3e9;p=awesomized%2Flibmemcached

diff --git a/test/lib/random.hpp b/test/lib/random.hpp
index 1d7f7a6f..322de6af 100644
--- a/test/lib/random.hpp
+++ b/test/lib/random.hpp
@@ -22,22 +22,21 @@
 #include <string>
 #include <type_traits>
 #include <utility>
+#include <mutex>
 
 using namespace std;
 
 using kv_pair = pair<string, string>;
 
-template<typename T>
-enable_if_t<is_integral_v<T>, T> random_num(T min, T max) {
-  using namespace chrono;
-  using rnd = mt19937;
-  using dst = uniform_int_distribution<T>;
+extern mt19937_64 rnd_eng;
+extern mutex rnd_mtx;
 
-  static auto time = duration_cast<nanoseconds>(system_clock::now().time_since_epoch());
-  static auto seed = static_cast<rnd::result_type>(time.count() % numeric_limits<T>::max());
-  static auto rgen = rnd{seed};
+void random_setup();
 
-  return dst(min, max)(rgen);
+template<typename T>
+enable_if_t<is_integral_v<T>, T> random_num(T min, T max) {
+  lock_guard m{rnd_mtx};
+  return uniform_int_distribution<T>(min, max)(rnd_eng);
 }
 
 unsigned random_port();