X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2513cd9f5055a6a62a7066685e7fca786bcf1966..66150cac82e5c723ee69237a008fc27023c73def:/include/simgrid/simix.hpp

diff --git a/include/simgrid/simix.hpp b/include/simgrid/simix.hpp
index 1829bad3a3..25d8a917b9 100644
--- a/include/simgrid/simix.hpp
+++ b/include/simgrid/simix.hpp
@@ -13,13 +13,54 @@
 #include <utility>
 #include <memory>
 #include <functional>
+#include <future>
+#include <type_traits>
 
 #include <xbt/function_types.h>
 #include <simgrid/simix.h>
 
+XBT_PUBLIC(void) simcall_run_kernel(std::function<void()> const& code);
+
 namespace simgrid {
 namespace simix {
 
+template<class R, class F>
+void fulfill_promise(std::promise<R>& promise, F&& code)
+{
+  try {
+    promise.set_value(std::forward<F>(code)());
+  }
+  catch(...) {
+    promise.set_exception(std::current_exception());
+  }
+}
+
+// special version for R=void because the previous code does not compile
+// in this case:
+template<class F>
+void fulfill_promise(std::promise<void>& promise, F&& code)
+{
+  try {
+    std::forward<F>(code)();
+    promise.set_value();
+  }
+  catch(...) {
+    promise.set_exception(std::current_exception());
+  }
+}
+
+template<class F>
+typename std::result_of<F()>::type kernel(F&& code)
+{
+  typedef typename std::result_of<F()>::type R;
+  std::promise<R> promise;
+  simcall_run_kernel([&]{
+    xbt_assert(SIMIX_is_maestro(), "Not in maestro");
+    fulfill_promise(promise, std::forward<F>(code));
+  });
+  return promise.get_future().get();
+}
+
 class Context;
 class ContextFactory;