[simix] Create a (fake) simcall for creating a process directly from a simgrid::simix...

[simgrid.git] / include / simgrid / simix.hpp

diff --git a/include/simgrid/simix.hpp b/include/simgrid/simix.hpp
index fb3fd5a..cf51596 100644 (file)
--- a/include/simgrid/simix.hpp
+++ b/include/simgrid/simix.hpp
@@ -9,6 +9,7 @@
 
 #include <cstddef>
 
+#include <exception>
 #include <string>
 #include <utility>
 #include <memory>
@@ -81,13 +82,37 @@ typename std::result_of<F()>::type kernel(F&& code)
 
 class args {
 private:
-  int argc_;
-  char** argv_;
+  int argc_ = 0;
+  char** argv_ = nullptr;
 public:
 
   // Main constructors
-  args() : argc_(0), argv_(nullptr) {}
-  args(int argc, char** argv) : argc_(argc), argv_(argv) {}
+  args() {}
+
+  void assign(int argc, const char*const* argv)
+  {
+    clear();
+    char** new_argv = xbt_new(char*,argc + 1);
+    for (int i = 0; i < argc; i++)
+      new_argv[i] = xbt_strdup(argv[i]);
+    new_argv[argc] = nullptr;
+    this->argc_ = argc;
+    this->argv_ = new_argv;
+  }
+  args(int argc, const char*const* argv)
+  {
+    this->assign(argc, argv);
+  }
+
+  char** to_argv() const
+  {
+    const int argc = argc_;
+    char** argv = xbt_new(char*, argc + 1);
+    for (int i=0; i< argc; i++)
+      argv[i] = xbt_strdup(argv_[i]);
+    argv[argc] = nullptr;
+    return argv;
+  }
 
   // Free
   void clear()
@@ -101,8 +126,15 @@ public:
   ~args() { clear(); }
 
   // Copy
-  args(args const& that) = delete;
-  args& operator=(args const& that) = delete;
+  args(args const& that)
+  {
+    this->assign(that.argc(), that.argv());
+  }
+  args& operator=(args const& that)
+  {
+    this->assign(that.argc(), that.argv());
+    return *this;
+  }
 
   // Move:
   args(args&& that) : argc_(that.argc_), argv_(that.argv_)
@@ -125,19 +157,32 @@ public:
   char* operator[](std::size_t i) { return argv_[i]; }
 };
 
-inline
-std::function<void()> wrap_main(xbt_main_func_t code, int argc, char **argv)
+inline std::function<void()> wrap_main(
+  xbt_main_func_t code,  std::shared_ptr<simgrid::simix::args> args)
 {
   if (code) {
-    auto arg = std::make_shared<simgrid::simix::args>(argc, argv);
     return [=]() {
-      code(arg->argc(), arg->argv());
+      code(args->argc(), args->argv());
     };
   }
-  // TODO, we should free argv
   else return std::function<void()>();
 }
 
+inline
+std::function<void()> wrap_main(xbt_main_func_t code, simgrid::simix::args args)
+{
+  if (code)
+    return wrap_main(code, std::unique_ptr<simgrid::simix::args>(
+      new simgrid::simix::args(std::move(args))));
+  else return std::function<void()>();
+}
+
+inline
+std::function<void()> wrap_main(xbt_main_func_t code, int argc, const char*const* argv)
+{
+  return wrap_main(code, simgrid::simix::args(argc, argv));
+}
+
 class Context;
 class ContextFactory;
 
@@ -238,4 +283,38 @@ XBT_PUBLIC(void) create_maestro(std::function<void()> code);
 }
 }
 
+/*
+ * Type of function that creates a process.
+ * The function must accept the following parameters:
+ * void* process: the process created will be stored there
+ * const char *name: a name for the object. It is for user-level information and can be NULL
+ * xbt_main_func_t code: is a function describing the behavior of the process
+ * void *data: data a pointer to any data one may want to attach to the new object.
+ * sg_host_t host: the location where the new process is executed
+ * int argc, char **argv: parameters passed to code
+ * xbt_dict_t pros: properties
+ */
+typedef smx_process_t (*smx_creation_func_t) (
+                                      /* name */ const char*,
+                                      /* code */ xbt_main_func_t,
+                                      /* userdata */ void*,
+                                      /* hostname */ const char*,
+                                      /* kill_time */ double,
+                                      simgrid::simix::args args,
+                                      /* props */ xbt_dict_t,
+                                      /* auto_restart */ int,
+                                      /* parent_process */ smx_process_t);
+
+extern "C"
+XBT_PUBLIC(void) SIMIX_function_register_process_create(smx_creation_func_t function);
+
+XBT_PUBLIC(smx_process_t) simcall_process_create(const char *name,
+                                          xbt_main_func_t code,
+                                          void *data,
+                                          const char *hostname,
+                                          double kill_time,
+                                          simgrid::simix::args args,
+                                          xbt_dict_t properties,
+                                          int auto_restart);
+
 #endif