#ifndef SIMGRID_SIMIX_HPP
#define SIMGRID_SIMIX_HPP
+#include <cstddef>
+
+#include <string>
#include <utility>
#include <memory>
+#include <functional>
#include <xbt/function_types.h>
+#include <xbt/future.hpp>
+#include <xbt/functional.hpp>
+#include <xbt/signal.hpp>
+
#include <simgrid/simix.h>
+XBT_PUBLIC(void) simcall_run_kernel(std::function<void()> const& code);
+
+/** Execute some code in the kernel and block
+ *
+ * run_blocking() is a generic blocking simcall. It is given a callback
+ * which is executed immediately in the SimGrid kernel. The callback is
+ * responsible for setting the suitable logic for waking up the process
+ * when needed.
+ *
+ * @ref simix::kernelSync() is a higher level wrapper for this.
+ */
+XBT_PUBLIC(void) simcall_run_blocking(std::function<void()> const& code);
+
+template<class F> inline
+void simcall_run_kernel(F& f)
+{
+ simcall_run_kernel(std::function<void()>(std::ref(f)));
+}
+template<class F> inline
+void simcall_run_blocking(F& f)
+{
+ simcall_run_blocking(std::function<void()>(std::ref(f)));
+}
+
namespace simgrid {
+
namespace simix {
-class Context;
-class ContextFactory;
-
-class ContextFactory {
-private:
- std::string name_;
-public:
-
- 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 void run_all() = 0;
- virtual Context* self();
- std::string const& name() const
- {
- return name_;
- }
-private:
- void declare_context(void* T, std::size_t size);
-protected:
- template<class T, class... Args>
- T* new_context(Args&&... args)
- {
- T* context = new T(std::forward<Args>(args)...);
- this->declare_context(context, sizeof(T));
- return context;
- }
-};
-
-class Context {
-protected:
- xbt_main_func_t code_ = nullptr;
- int argc_ = 0;
- char **argv_ = nullptr;
-private:
- 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,
- void_pfn_smxprocess_t cleanup_func,
- smx_process_t process);
- int operator()()
- {
- return code_(argc_, argv_);
- }
- smx_process_t process()
- {
- return this->process_;
- }
- void set_cleanup(void_pfn_smxprocess_t cleanup)
- {
- cleanup_func_ = cleanup;
- }
-
- // Virtual methods
- virtual ~Context();
- virtual void stop();
- virtual void suspend() = 0;
-};
+/** 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 kernelImmediate(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();
}
+
+
+XBT_PUBLIC(void) set_maestro(std::function<void()> code);
+XBT_PUBLIC(void) create_maestro(std::function<void()> code);
+
+// What's executed as SIMIX actor code:
+typedef std::function<void()> ActorCode;
+
+// Create ActorCode based on argv:
+typedef std::function<ActorCode(std::vector<std::string> args)> ActorCodeFactory;
+
+XBT_PUBLIC(void) registerFunction(const char* name, ActorCodeFactory factory);
+
+/** These functions will be called when we detect a deadlock: any remaining process is locked on an action
+ *
+ * If these functions manage to unlock some of the processes, then the deadlock will be avoided.
+ */
+extern simgrid::xbt::signal<void(void)> onDeadlock;
+}
+}
+
+/*
+ * 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_actor_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_actor_t);
+
+extern "C"
+XBT_PUBLIC(void) SIMIX_function_register_process_create(smx_creation_func_t function);
+
+XBT_PUBLIC(smx_actor_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, simgrid::xbt::Task<void()> callback);
+
+template<class F> inline
+XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, F callback)
+{
+ return SIMIX_timer_set(date, simgrid::xbt::Task<void()>(std::move(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
\ No newline at end of file
+#endif
