[simix] Use C++ templates for generating the marshaling/unmashaling code

[simgrid.git] / src / simix / popping_private.h

diff --git a/src/simix/popping_private.h b/src/simix/popping_private.h
index e76bf23..3415362 100644 (file)
--- a/src/simix/popping_private.h
+++ b/src/simix/popping_private.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007-2010, 2012-2014. The SimGrid Team.
+/* Copyright (c) 2007-2010, 2012-2015. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -7,13 +7,15 @@
 #ifndef _POPPING_PRIVATE_H
 #define _POPPING_PRIVATE_H
 
+#include <xbt/base.h>
+#include <simgrid/simix.h>
+
 SG_BEGIN_DECL()
 
 /********************************* Simcalls *********************************/
 XBT_PUBLIC_DATA(const char*) simcall_names[]; /* Name of each simcall */
 
 #include "popping_enum.h" /* Definition of e_smx_simcall_t, with one value per simcall */
-#include "mc/mc_forward.h" /* Definition of mc_snapshot_t, used by one simcall */
 
 typedef int (*simix_match_func_t)(void *, void *, smx_synchro_t);
 typedef void (*simix_copy_data_func_t)(smx_synchro_t, void*, size_t);
@@ -23,22 +25,18 @@ typedef void (*FPtr)(void); // Hide the ugliness
 /* Pack all possible scalar types in an union */
 union u_smx_scalar {
   char            c;
-  const char*     cc;
   short           s;
   int             i;
   long            l;
+  long long       ll;
   unsigned char   uc;
   unsigned short  us;
   unsigned int    ui;
   unsigned long   ul;
-  float           f;
+  unsigned long long ull;
   double          d;
-  size_t          sz;
-  sg_size_t       sgsz;
-  sg_offset_t     sgoff;
   void*           dp;
   FPtr            fp;
-  const void*     cp;
 };
 
 /**
@@ -55,15 +53,123 @@ typedef struct s_smx_simcall {
 #define SIMCALL_SET_MC_VALUE(simcall, value) ((simcall)->mc_value = (value))
 #define SIMCALL_GET_MC_VALUE(simcall) ((simcall)->mc_value)
 
-#include "popping_accessors.h"
-
 /******************************** General *************************************/
 
-void SIMIX_simcall_answer(smx_simcall_t);
-void SIMIX_simcall_handle(smx_simcall_t, int);
-void SIMIX_simcall_exit(smx_synchro_t);
-const char *SIMIX_simcall_name(e_smx_simcall_t kind);
+XBT_PRIVATE void SIMIX_simcall_answer(smx_simcall_t);
+XBT_PRIVATE void SIMIX_simcall_handle(smx_simcall_t, int);
+XBT_PRIVATE void SIMIX_simcall_exit(smx_synchro_t);
+XBT_PRIVATE const char *SIMIX_simcall_name(e_smx_simcall_t kind);
+XBT_PRIVATE void SIMIX_run_kernel(void* code);
 
 SG_END_DECL()
 
+#ifdef __cplusplus
+
+namespace simgrid {
+namespace simix {
+
+template<class T>
+class type {
+  constexpr bool operator==(type) const    { return true; }
+  template<class U>
+  constexpr bool operator==(type<U>) const { return false; }
+  constexpr bool operator!=(type) const    { return false; }
+  template<class U>
+  constexpr bool operator!=(type<U>) const { return true; }
+};
+
+template<typename T> struct marshal_t {};
+#define SIMIX_MARSHAL(T, field) \
+  inline void marshal(type<T>, u_smx_scalar& simcall, T value) \
+  { \
+    simcall.field = value; \
+  } \
+  inline T unmarshal(type<T>, u_smx_scalar const& simcall) \
+  { \
+    return simcall.field; \
+  }
+
+SIMIX_MARSHAL(char, c);
+SIMIX_MARSHAL(short, s);
+SIMIX_MARSHAL(int, i);
+SIMIX_MARSHAL(long, l);
+SIMIX_MARSHAL(unsigned char, uc);
+SIMIX_MARSHAL(unsigned short, us);
+SIMIX_MARSHAL(unsigned int, ui);
+SIMIX_MARSHAL(unsigned long, ul);
+SIMIX_MARSHAL(unsigned long long, ull);
+SIMIX_MARSHAL(long long, ll);
+SIMIX_MARSHAL(float, d);
+SIMIX_MARSHAL(double, d);
+SIMIX_MARSHAL(FPtr, fp);
+
+inline
+void unmarshal(type<void>, u_smx_scalar const& simcall) {}
+
+template<class T> inline
+void marshal(type<T*>, u_smx_scalar& simcall, T* value)
+{
+  simcall.dp = (void*) value;
+}
+template<class T> inline
+T* unmarshal(type<T*>, u_smx_scalar const& simcall)
+{
+  return static_cast<T*>(simcall.dp);
+}
+
+template<class R, class... T> inline
+void marshal(type<R(*)(T...)>, u_smx_scalar& simcall, R(*value)(T...))
+{
+  simcall.fp = (FPtr) value;
+}
+template<class R, class... T> inline
+auto unmarshal(type<R(*)(T...)>, u_smx_scalar simcall) -> R(*)(T...)
+{
+  return (R(*)(T...)) simcall.fp;
+}
+
+template<class T> inline
+void marshal(u_smx_scalar& simcall, T const& value)
+{
+  return marshal(type<T>(), simcall, value);
+}
+template<class T> inline
+typename std::remove_reference<T>::type unmarshal(u_smx_scalar& simcall)
+{
+  return unmarshal(type<T>(), simcall);
+}
+
+template<std::size_t I>
+inline void marshalArgs(smx_simcall_t simcall) {}
+
+template<std::size_t I, class A>
+inline void marshalArgs(smx_simcall_t simcall, A const& a)
+{
+  marshal(simcall->args[I], a);
+}
+
+template<std::size_t I, class A, class... B>
+inline void marshalArgs(smx_simcall_t simcall, A const& a, B const&... b)
+{
+  marshal(simcall->args[I], a);
+  marshalArgs<I+1>(simcall, b...);
+}
+
+/** Initialize the simcall */
+template<class... A> inline
+void marshal(smx_simcall_t simcall, e_smx_simcall_t call, A const&... a)
+{
+  simcall->call = call;
+  memset(&simcall->result, 0, sizeof(simcall->result));
+  memset(simcall->args, 0, sizeof(simcall->args));
+  marshalArgs<0>(simcall, a...);
+}
+
+}
+}
+
+#endif
+
+#include "popping_accessors.h"
+
 #endif