#ifndef SIMGRID_SIMIX_HPP
#define SIMGRID_SIMIX_HPP
+#include <cstddef>
+
+#include <exception>
+#include <string>
#include <utility>
#include <memory>
+#include <functional>
+#include <future>
+#include <type_traits>
#include <xbt/function_types.h>
+#include <xbt/future.hpp>
+
#include <simgrid/simix.h>
+XBT_PUBLIC(void) simcall_run_kernel(std::function<void()> const& code);
+
namespace simgrid {
namespace simix {
+/** Execute some code in the kernel/maestro
+ *
+ * This can be used to enforce mutual exclusion with other simcall.
+ * More importantly, this enforces a deterministic/reproducible ordering
+ * of the operation with respect to other simcalls.
+ */
+template<class F>
+typename std::result_of<F()>::type kernel(F&& code)
+{
+ // If we are in the maestro, we take the fast path and execute the
+ // code directly without simcall mashalling/unmarshalling/dispatch:
+ if (SIMIX_is_maestro())
+ return std::forward<F>(code)();
+
+ // If we are in the application, pass the code to the maestro which
+ // executes it for us and reports the result. We use a std::future which
+ // conveniently handles the success/failure value for us.
+ typedef typename std::result_of<F()>::type R;
+ simgrid::xbt::Result<R> result;
+ simcall_run_kernel([&]{
+ xbt_assert(SIMIX_is_maestro(), "Not in maestro");
+ simgrid::xbt::fulfillPromise(result, std::forward<F>(code));
+ });
+ return result.get();
+}
+
class Context;
class ContextFactory;
-class ContextFactory {
+XBT_PUBLIC_CLASS ContextFactory {
private:
std::string name_;
public:
- ContextFactory(std::string name) : name_(std::move(name)) {}
+ explicit ContextFactory(std::string name) : name_(std::move(name)) {}
virtual ~ContextFactory();
- virtual Context* create_context(
- xbt_main_func_t, int, char **, void_pfn_smxprocess_t,
- smx_process_t process
- ) = 0;
+ virtual Context* create_context(std::function<void()> code,
+ void_pfn_smxprocess_t cleanup, smx_process_t process) = 0;
+
+ // Optional methods for attaching main() as a context:
+
+ /** Creates a context from the current context of execution
+ *
+ * This will not work on all implementation of `ContextFactory`.
+ */
+ virtual Context* attach(void_pfn_smxprocess_t cleanup_func, smx_process_t process);
+ virtual Context* create_maestro(std::function<void()> code, smx_process_t process);
+
virtual void run_all() = 0;
virtual Context* self();
std::string const& name() const
}
};
-class Context {
-protected:
- xbt_main_func_t code_ = nullptr;
- int argc_ = 0;
- char **argv_ = nullptr;
+XBT_PUBLIC_CLASS Context {
private:
+ std::function<void()> code_;
void_pfn_smxprocess_t cleanup_func_ = nullptr;
smx_process_t process_ = nullptr;
public:
bool iwannadie;
public:
- Context(xbt_main_func_t code,
- int argc, char **argv,
+ Context(std::function<void()> code,
void_pfn_smxprocess_t cleanup_func,
smx_process_t process);
- int operator()()
+ void operator()()
{
- return code_(argc_, argv_);
+ code_();
+ }
+ bool has_code() const
+ {
+ return (bool) code_;
}
smx_process_t process()
{
virtual void suspend() = 0;
};
+XBT_PUBLIC_CLASS AttachContext : public Context {
+public:
+
+ AttachContext(std::function<void()> code,
+ void_pfn_smxprocess_t cleanup_func,
+ smx_process_t process)
+ : Context(std::move(code), cleanup_func, process)
+ {}
+
+ ~AttachContext() override;
+
+ /** Called by the context when it is ready to give control
+ * to the maestro.
+ */
+ virtual void attach_start() = 0;
+
+ /** Called by the context when it has finished its job */
+ virtual void attach_stop() = 0;
+};
+
+XBT_PUBLIC(void) set_maestro(std::function<void()> code);
+XBT_PUBLIC(void) create_maestro(std::function<void()> code);
+
}
}
-#endif
\ No newline at end of file
+/*
+ * 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*,
+ std::function<void()> code,
+ /* userdata */ void*,
+ /* hostname */ const char*,
+ /* kill_time */ double,
+ /* 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,
+ std::function<void()> code,
+ void *data,
+ const char *hostname,
+ double kill_time,
+ xbt_dict_t properties,
+ int auto_restart);
+
+XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, std::function<void()> callback);
+
+template<class R, class T> inline
+XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, R(*callback)(T*), T* arg)
+{
+ return SIMIX_timer_set(date, [=](){ callback(arg); });
+}
+
+#endif
